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Academic literature on the topic 'Tropical peat soil'

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Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Tropical peat soil"

1

Lim Kim Choo, Liza Nuriati, and Osumanu Haruna Ahmed. "Methane Emission from Pineapple Cultivation on a Tropical Peatland at Saratok, Malaysia." Sustainable Agriculture Research 6, no. 3 (June 18, 2017): 64. http://dx.doi.org/10.5539/sar.v6n3p64.

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Information on methane emission in pineapple cultivation on peatlands is scarce. Methane emission in pineapple cultivation is important as 90% of pineapples are grown on the peat soils of Malaysia. It is essential to determine methane emission in pineapple cultivation because pineapples are Crassulacean acid metabolism plants whose effects on methane could be different from other crops grown on tropical peat soils. Methane emissions from root respiration, microbial respiration, and oxidative peat decomposition were determined in a lysimeter experiment. There were three treatments: peat soil cultivated with pineapple, bare peat soil, and bare peat soil fumigated with chloroform. Methane emissions from peat soil cultivated with pineapple, bare peat soil, and bare peat soil fumigated with chloroform were 0.65 t/ha/yr, 0.75 t/ha/yr, and 0.75 t/ha/yr, respectively. The lower methane emissions are consistent with the general believe that methane emission from cultivated peat soils is lower than those of anaerobic or water logged peat soils. Soil methane emission was affected by nitrogen fertilization under pineapple cultivation but the converse was true for soil temperature nor soil moisture.
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Jeffary, Alicia Vanessa, Ahmed Osumanu Haruna, Roland Kueh Jui Heng, Liza Nuriati Lim Kim Choo, and Latifah Omar. "Horizontal and Vertical Emissions of Carbon Dioxide and Methane from a Tropical Peat Soil Cultivated with Pineapple (Ananas comosus (L.) Merr.)." Sustainable Agriculture Research 8, no. 3 (May 14, 2019): 1. http://dx.doi.org/10.5539/sar.v8n3p1.

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Peat soils have been developed for large scale plantations such as oil palm due to their positive contribution to Malaysia’s economic growth in agriculture sector. However, these developments contribute to the emissions of greenhouse gases (GHGs) mainly carbon (CO2) and methane (CH4). To date, there were limited information of GHGs emissions from pineapple cultivation and also inadequate data on horizontally and vertically soil GHGs emissions in peat soil profile. Thus, this study was carried out to determine carbon CO2 and CH4 emissions horizontally and vertically from a drained tropical peat soils from a drained tropical peat soils cultivated with pineapple (Ananas comosus (L.) Merr. Horizontal and vertical movements of CO2 and CH4 were measured from a drained tropical peatland with Ananas comosus (L.) Merr. Tropical peat soils cultivated with Ananas comosus (L.) Merr. contributed to 79.7 % of CO2, and 0.2 % of CH4 based on the yearly basis regardless of the differences in diurnal transportation; horizontal and vertical emission. Soil CO2 and CH4 were emitted the most through horizontal transportation with 70.84 % CO2, and 0.19 % CH4 compared to 8.85 % CO2, and 0.02 % CH4 in vertical transportation. The emission of CO2 was influenced by depth of water table and temperature. It is generally believed that lowering of peats water table leads to emission of higher CO2 emission because this process leads to exposure of peat soils to oxidation. Seasonal variation in CH4 flux was higher in the wet seasons due to rainfall; this might have increased the water table of the peat soil. The results suggest that CO2 and CH4 emissions occur both horizontally and vertically regardless of season. Therefore in order not to underestimate CO2 and CH4 emissions from peat soil, it is important to measure the emissions of this greenhouse gas which has been implicated in environmental pollution horizontally and vertically.
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Lim Kim Choo, Liza Nuriati, and Osumanu Haruna Ahmed. "Nitrous Oxide Emission of a Tropical Peat Soil Grown with Pineapple at Saratok, Malaysia." Sustainable Agriculture Research 6, no. 3 (June 18, 2017): 75. http://dx.doi.org/10.5539/sar.v6n3p75.

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Draining of peatland for agriculture could affect the release of nitrous oxide into the atmosphere. Presently, there is dearth of information on soil nitrous oxide emission from tropical peat soils cultivated with pineapples. Lysimeter and closed chamber methods were used to quantify nitrous oxide emission from root respiration, microbial respiration, and oxidative peat decomposition under controlled water table condition. Treatments evaluated were: peat soil grown with pineapple, uncultivated peat soils, and bare peat soil fumigated with chloroform. Cultivation of Moris pineapple on drained peat soils resulted in the higher release of nitrous oxide emission (15.7 t N2O ha/yr), followed by fumigated peat soil with chloroform (14.3 t N2O ha/yr), and uncultivated peat soil (10.2 t N2O ha/yr). Soil nitrous oxide emission was affected by nitrate fertilization but emission was not affected by soil temperature nor soil moisture.
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Simanjuntak, F., Darmawan, and B. Sumawinata. "The priming effect in compost amelioration of tropical peat soil." IOP Conference Series: Earth and Environmental Science 1025, no. 1 (May 1, 2022): 012033. http://dx.doi.org/10.1088/1755-1315/1025/1/012033.

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Abstract Utilization of peat land for agriculture in Indonesia is increasing and some efforts in improving the peat soil fertility is being highly concerned. In addition to fertilizers, farmers add some fresher organic matter as the ameliorants, such as compost to support better microbial growth in the soil for increasing the decomposition process. Theoretically the addition of compost onto peat soil would lead to priming effect, hence it would accelerate the decomposition of peat organic matter. This study was to observe the impact of decomposition process due to adding compost to respiratory CO2 of peat soil. Peat soil from Central Kalimantan was used for experiment, incubated with KOH and then the respiratory CO2 was measured with titration method. Two different sizes of peat soil materials obtained from sieving peat soils, i.e. 5 mm and > the 5 mm. Each peat soil materials were mixed with 10%, 25%, and 50% compost to the total 100 grams. Post the compost addition, the samples were incubated for 20 days, and the respiratory CO2 was gauged for 4 times at 5 days interval during the incubation. It was showed that the more compost mixed to the peat soil materials, the more CO2 produced. The highest CO2 was 912.00 mg/g/day from compost incubation and a mixture of 50 gram of compost and coarse peat soil material produced 460.8 mg/g/day.
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Krishnan, Kavinraj, Audrey Awing Ngerong, Karen Ahim, Osumanu Haruna Ahmed, Maru Ali, Latifah Omar, and Adiza Alhassan Musah. "Mitigating Potassium Leaching from Muriate of Potash in a Tropical Peat Soil Using Clinoptilolite Zeolite, Forest Litter Compost, and Chicken Litter Biochar." Agronomy 11, no. 10 (September 22, 2021): 1900. http://dx.doi.org/10.3390/agronomy11101900.

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Using muriate of potash (MOP) as a source of potassium (K) is a cost-effective method for crop production in tropical peat soils. However, exchangeable K commonly leaches from tropical peat soils because of high rainfall and a lack of clay to retain this cation. Potassium retention as exchangeable K could inhibit K loss through leaching to increase K availability. Clinoptilolite zeolite (CZ), forest litter compost (FLC), and chicken litter biochar (CLB) can be used to retain K from MOP in tropical peat soils for crop use because of the high affinity of CZ, FLC, and CLB for K ions. These approaches can be used as innovative and sustainable alternatives for the frequently used lime (CaCO3). However, information on using CZ, FLC, and CLB for MOP K retention is limited. Thus, CZ, FLC, and CLB were tested in a leaching study to determine their effects on MOP K retention in tropical peat soil. The use of CZ and FLC at rates of 100% and 75% of the recommended rate for pineapple cultivation (a commonly grown fruit crop in tropical peat soils in Malaysia) improved the K availability, pH, and CEC of the peat soil because of the high CEC of CZ and the humic substances (humic acids, fulvic acids, and humin) of FLC, which have a high affinity for K ions. The CLB did not improve K retention because of the competition between K, Ca, Mg, and Na ions, which are inherently high in this soil amendment. Instead of liming, which only replaces a few of the leached cations, such as calcium, the results of this study suggest an alternative method of retaining peat cations, such as K, that reduce peat acidity. This alternative method of retaining peat soil cations, especially K ions, is a practical and sustainable approach for improving peat soil productivity.
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Jeffary, Alicia Vanessa, Osumanu Haruna Ahmed, Roland Kueh Jui Heng, Liza Nuriati Lim Kim Choo, Latifah Omar, Adiza Alhassan Musah, and Arifin Abdu. "Nitrous Oxide Emissions in Pineapple Cultivation on a Tropical Peat Soil." Sustainability 13, no. 9 (April 28, 2021): 4928. http://dx.doi.org/10.3390/su13094928.

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Farming systems on peat soils are novel, considering the complexities of these organic soil. Since peat soils effectively capture greenhouse gases in their natural state, cultivating peat soils with annual or perennial crops such as pineapples necessitates the monitoring of nitrous oxide (N2O) emissions, especially from cultivated peat lands, due to a lack of data on N2O emissions. An on-farm experiment was carried out to determine the movement of N2O in pineapple production on peat soil. Additionally, the experiment was carried out to determine if the peat soil temperature and the N2O emissions were related. The chamber method was used to capture the N2O fluxes daily (for dry and wet seasons) after which gas chromatography was used to determine N2O followed by expressing the emission of this gas in t ha−1 yr−1. The movement of N2O horizontally (832 t N2O ha−1 yr−1) during the dry period was higher than in the wet period (599 t N2O ha−1 yr−1) because of C and N substrate in the peat soil, in addition to the fertilizer used in fertilizing the pineapple plants. The vertical movement of N2O (44 t N2O ha−1 yr−1) was higher in the dry season relative to N2O emission (38 t N2O ha−1 yr−1) during the wet season because of nitrification and denitrification of N fertilizer. The peat soil temperature did not affect the direction (horizontal and vertical) of the N2O emission, suggesting that these factors are not related. Therefore, it can be concluded that N2O movement in peat soils under pineapple cultivation on peat lands occurs horizontally and vertically, regardless of season, and there is a need to ensure minimum tilling of the cultivated peat soils to prevent them from being an N2O source instead of an N2O sink.
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Luta, Wendy, Osumanu Haruna Ahmed, Latifah Omar, Roland Kueh Jui Heng, Liza Nuriati Lim Kim Choo, Mohamadu Boyie Jalloh, Adiza Alhassan Musah, and Arifin Abdu. "Water Table Fluctuation and Methane Emission in Pineapples (Ananas comosus (L.) Merr.) Cultivated on a Tropical Peatland." Agronomy 11, no. 8 (July 21, 2021): 1448. http://dx.doi.org/10.3390/agronomy11081448.

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Inappropriate drainage and agricultural development on tropical peatland may lead to an increase in methane (CH4) emission, thus expediting the rate of global warming and climate change. It was hypothesized that water table fluctuation affects CH4 emission in pineapple cultivation on tropical peat soils. The objectives of this study were to: (i) quantify CH4 emission from a tropical peat soil cultivated with pineapple and (ii) determine the effects of water table depth on CH4 emission from a peat soil under simulated water table fluctuation. Soil CH4 emissions from an open field pineapple cultivation system and field lysimeters were determined using the closed chamber method. High-density polyethylene field lysimeters were set up to simulate the natural condition of cultivated drained peat soils under different water table fluctuations. The soil CH4 flux was measured at five time intervals to obtain a 24 h CH4 emission in the dry and wet seasons during low- and high-water tables. Soil CH4 emissions from open field pineapple cultivation were significantly lower compared with field lysimeters under simulated water table fluctuation. Soil CH4 emissions throughout the dry and wet seasons irrespective of water table fluctuation were not affected by soil temperature but emissions were influenced by the balance between methanogenic and methanotrophic microorganisms controlling CH4 production and consumption, CH4 transportation through molecular diffusion via peat pore spaces, and non-microbial CH4 production in peat soils. Findings from the study suggest that water table fluctuation at the soil–water interface relatively controls the soil CH4 emission from lysimeters under simulated low- and high-water table fluctuation. The findings of this study provide an understanding of the effects of water table fluctuation on CH4 emission in a tropical peatland cultivated with pineapple.
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Husnain, Ibrahim Adamy Sipahutar, Joko Purnomo, Hery Widyanto, and Nurhayati. "CO2 Emissions from Tropical Peat Soil Affected by Fertilization." Journal of Tropical Soils 22, no. 1 (January 2, 2017): 1–9. http://dx.doi.org/10.5400/jts.2017.v22i1.1-9.

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The conversion of peat soils to agricultural uses has been thought to increase CO2 emission due to several factors, including fertilization. However, evidence on the effect of fertilization on CO2emissionsfrompeat soils is rareand often inconsistence. We measured the effects of different types of fertilizer, including N, P and K sources, and clay as an ameliorant on CO2 emission from a bare peat soil in Lubuk Ogong, Riau Province. Nutrients were added in the following combinations: 0 (unfertilized plot), N source (urea), slow-release N (slow release urea), N and Psource (Urea+SP-36), N, P and K sources (urea+SP-36+KCl) and combined NPK-Clay. Fertilization resulted in a decreasein CO2 emissions compared to that prior to fertilization except when slow-release urea was applied. Decreasing of CO2 emissions was probably due to pH-related effects because the pH in the N treatment was lower than in both the control and the unfertilized plot. A decreasein the level of CO2 emissions among the treatments followed the order NPK-Clay>NP>NPK>urea>slow-release urea. Covariance analyses showed that the difference in CO2 emissions prior to treatment was not significant. The application of individual and combined treatments of N, P, K and NPK mixed with 5 Mg ha-1 clay led to significantly reduced CO2 emissions from bare peat soil in Lubuk Ogong, Riau Province. In addition to fertilization, the water table depth was the only parameter that significantly affected the CO2 emissions (P<0.05). We conclude that the application of nutrient combinations, including N, P, K and clay, could reduce CO2 emissions because these treatments maintain a balanced nutritional condition in the soil with respect to the microbial activity.Keywords: Amelioration, CO2 emission, fertilization, tropical peat soils
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Kurnain, Ahmad. "MOISTURE RELEASE OF TROPICAL PEAT SOILS AS DECREASING WATER TABLE." TROPICAL WETLAND JOURNAL 1, no. 1 (August 30, 2019): 33–37. http://dx.doi.org/10.20527/twj.v1i1.15.

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Hydro-physics of peat soils varied with their peat decomposition degree. One of the important hydro-physics is ability of the peat soil to release water as decreasing water table. Potential of water availabilty to crop growth is evidently related to this behaviour. The present study was conducted to understand modes of moisture release of peat soils as decreasing water table. Water tables were simulated using a hanging column method. The water table was arranged at levels of 0, 10, 20, 30, 50, and 100 cm below peat column surfaces. Potential of moisture release or in oppositely potential of moisture retention could be modelled with the 3 parameter equation. Highly decomposed peat characterized by higher bulk density and lower total porosity stored less water but retained more water.
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10

KIN TAT, LEE, and YOUVENTHARAN DURAISAMY. "Shear Wave Velocity Measurements in Tropical Peat Using In-house Device." CONSTRUCTION 2, no. 1 (May 18, 2022): 22–30. http://dx.doi.org/10.15282/construction.v2i1.7404.

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Many people in the construction industry will agree that peat is a problematic material due to its compressibility behaviour. However, construction on these areas are inevitable because of the scarcity in space and suitable land for development. Hence, there is a need for proper in-situ testing on soil properties before any construction work can be carried out in peat. Shear wave (S-wave) velocity (Vs ) used to compute the small strain shear modulus, (Go ) which is an essential parameter to design structures in earthquake and vibration prone areas. The most versatile method to assess is by measuring shear wave propagation through soil samples using bender elements tests (BET). Currently, BET is limited to laboratory environments, which can be time consuming and expensive. Therefore, a portable device of BET for peat has been proposed in this research which is simple to use and economical. The proposed setup consists of an oscilloscope, digital multimeter, signal generator, signal amplifier, direct current generator and a pair of piezoelectric bender elements. Peak-to-peak method from time domain (TD) technique is implemented as the method to analyse shear waves. To validate the function of the proposed device, different types of soil samples including Ottawa sand, Kaolin S300, Silty loam, Hemic, and Fibric peat were prepared. The peat samples for this study were collected from Pekan and Maran districts in Pahang, Malaysia. With a suitable frequency input from the sine wave generated, the Vs determined from the device was used to compute Go. Results show there is only a less than 10% error in when it was compared with the typical values of tropical peat. The proposed device is also effective to differentiate the type of soil sample when tested. In summary, the proposed in-house device can be used as an indicator and to find out the initial value of Vs and Go in tropical peat soil.
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Dissertations / Theses on the topic "Tropical peat soil"

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Anwar, Syaiful. "Characterization and Classification of Tropical Peat Soils." Kyoto University, 2003. http://hdl.handle.net/2433/148569.

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Kyoto University (京都大学)
0048
新制・課程博士
博士(農学)
甲第10388号
農博第1367号
新制||農||878(附属図書館)
学位論文||H15||N3841(農学部図書室)
UT51-2003-L29
京都大学大学院農学研究科地域環境科学専攻
(主査)教授 小﨑 隆, 教授 櫻谷 哲夫, 教授 東 順一
学位規則第4条第1項該当
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Setiari, Marwanto. "Study on decomposition characteristics of peat soils under oil palm plantation in Riau and West Kalimantan, Indonesia." Kyoto University, 2018. http://hdl.handle.net/2433/233851.

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Kyoto University (京都大学)
0048
新制・課程博士
博士(農学)
甲第21312号
農博第2297号
新制||農||1065(附属図書館)
学位論文||H30||N5146(農学部図書室)
京都大学大学院農学研究科地域環境科学専攻
(主査)教授 舟川 晋也, 教授 縄田 栄治, 教授 北山 兼弘
学位規則第4条第1項該当
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Saidy, Akhmad Rizalli. "Carbon and nitrogen mineralisation in tropical peats : role of peat properties and management practices." Thesis, 2002. http://hdl.handle.net/2440/110257.

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The relationship between water content, expressed as a percentage of water-filled pore space (WFPS), and carbon and nitrogen mineralisation of 2 tropical peats varying in physical and chemical characteristics were examined in a laboratory incubation experiment. Carbon and nitrogen mineralisation for all peats were found to exhibit a parabolic response to increasing WFPS. The influence of nitrogen addition and liming on carbon and nitrogen mineralisation were studied to examine the effects of agricultural practices on the loss of peat mass through carbon mineralisation.
Thesis (M.Ag.Sc.) -- University of Adelaide, Dept. of Soil and Water, 2003
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Abat, Margaret. "Retention, release and plant availability of copper and zinc in three tropical peat soils of Sarawak, Malaysia." Thesis, 2011. http://hdl.handle.net/2440/70108.

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Natural tropical peat soils are unsuitable for cultivation of commercial crops because of their innate high acidity, high organic matter contents and low concentrations of essential nutrients. Lime is commonly applied to increase the soil pH prior to planting but this practice may affect the availability of nutrients. Deficiency of micronutrients, in particular copper (Cu) and zinc (Zn), has been reported, but there is still a lack of information on the behaviour and bioavailability of these micronutrients in tropical peat soils. The aims of this thesis were therefore to study the adsorption and desorption reactions of Cu and Zn in tropical peat soils of Sarawak, Malaysia and evaluate the effects of added Cu and Zn to correct the micronutrient deficiency problems in the soils. The adsorption and desorption of Cu and Zn in three untreated (control) and limed soils were studied. The soils were sampled from three locations in Sarawak and were all characterised by low pH, low bulk density, high organic matter content and low concentrations of available macro- and micronutrients. For the limed soils, calcium carbonate (CaCO₃) was used to increase the soil pH to 5.5. Both Cu and Zn adsorption followed a curvilinear (Freundlich) trend with binding affinity decreasing with concentrations of added Cu and Zn in all soils. At the same initial spiked concentrations, the adsorption of Cu and Zn were 50 and 67 times higher, respectively, in limed soils compared to that of controls. The three soils behaved similarly in relation to sorption of both Cu and Zn. The Freundlich coefficients (KF values) for Cu in control and limed soils were higher than those of Zn, indicating stronger solid phase sorption of Cu than Zn. The KF values for Cu and Zn were higher than those reported for mineral soils, but were similar to those reported for other tropical peat soils, suggesting that the efficiency of micronutrient Cu and Zn fertilisers would be low, and therefore fertiliser requirements for optimal crop production would be high. Desorption of adsorbed Cu and Zn was assessed using 10 mM calcium nitrate (Ca(NO₃)₂) and 5 mM diethylene triamine pentaacetic acid (DTPA). DTPA solution desorbed about 60% more Cu and Zn than Ca(NO₃)₂ solution. Copper was more effectively desorbed by DTPA than Zn, as Cu has a higher critical stability constant with DTPA. The percentage of adsorbed Cu desorbed by DTPA was lower in limed soils than in control soils, indicating that added Cu in limed soils will be less labile and bioavailable. By contrast, the percentage of adsorbed Zn desorbed by DTPA was higher in limed soils than in control soils. This is likely due to the possible changes in Zn speciation with increasing soil pH. The response of a tomato (Solanum lycopersicum L.) var. Tiny Tom to application of Cu and Zn as basal fertilisers was also assessed. Using the Mitscherlich model, yield responses were found to correlate well with the rates of added Cu and Zn. The shoot growth of tomato plants in fertilised soils was significantly (P ≤ 0.05) enhanced by the application of Cu and Zn fertilisers in all three soils. Leaf Cu and Zn concentrations were also significantly (P ≤ 0.05) increased. Responses to applied Zn were greater than those to applied Cu, and addition of Cu also increased Zn concentrations in tomato leaves and vice versa. This suggests a Zn ‘hidden’ response may exist when Cu fertiliser is added to these soils, since the addition of Cu probably displaces native Zn adsorbed to soil surfaces in these peat soils. As the rate of added micronutrients increased, concentrations of Cu in plant shoot material were much more regulated than those of Zn. Critical Cu and Zn concentrations in plant shoot to achieve 90% maximum yield were 16-21 mg/kg and 90-96 mg/kg, respectively, greater than those reported for tomato grown in other soil types. Critical concentrations for DTPA-extractable Cu and Zn in soil to achieve 90% maximum yield in the three soils were 1.6-2.9 and 3.5-3.6 mg/kg, respectively. The values for DTPA extractable Cu were within the range of the published critical values in other soil types. However, the critical concentrations of DTPA-extractable Zn were higher than the published critical values. These values can be used as a guide for fertiliser Cu and Zn recommendations on tropical peat soils in Sarawak.
Thesis (M.Ag.Sc.) -- University of Adelaide, School of Agriculture, Food and Wine, 2011
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Schawe, Marcus. "Hypsometrischer Klima- und Bodenwandel in Bergregenwaldökosystemen Boliviens." Doctoral thesis, 2005. http://hdl.handle.net/11858/00-1735-0000-0006-B331-2.

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Books on the topic "Tropical peat soil"

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Andriesse, J. P. Nature and management of tropical peat soils. Rome: Food and Agriculture Organization of the United Nations, 1988.

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International Symposium on Tropical Peatland (1991 Kuching, Sarawak). Tropical peat: Proceedings of the International Symposium on Tropical Peatland, 6-10 May 1991, Kuching, Sarawak, Malaysia. Edited by Aminuddin B. Yusoff, Tan Swee Lian, Institut Penyelidikan dan Kemajuan Pertanian Malaysia., and Sarawak. Dept. of Agriculture. [Kuala Lumpur]: Malaysian Agricultural Research and Development Institute, 1992.

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Tropical peat: Proceedings of the International Symposium on Tropical Peatland, 6-10 May 1991, Kuching, Sarawak, Malaysia. Malaysian Agricultural Research and Development Institute, 1992.

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Randall, Nicola, and Barbara Smith. The Biology of Agroecosystems. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198737520.001.0001.

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The Biology of Agroecosystems provides an introduction to the biological and ecological attributes of ecosystems and the biological impacts of agriculture on the wider environment. Global human populations are rising and diets are becoming ever more complicated, leading to requirements for increased levels of food production. Natural biotopes are becoming increasingly fragmented as agricultural activities expand around them. Agroecosystems occur from the tropics to subarctic environments and comprise systems as varied as annual crops, perennial grasslands, orchards, and agroforestry systems. They presently cover almost 40 per cent of the terrestrial land surface and significantly shape landscapes at a global scale. The book outlines the origin and development of agriculture and summarizes the characteristics of different types of agroecosystems. The conflicts between management of land for productivity and conservation of natural resources are discussed, and some of the key biological issues (loss of biodiversity, instability, susceptibility to pests, for example) are explored. Individual chapters introduce the role of functional groups such as pollinators, nutrient cycling organisms, and pest regulators; the importance of soils and soil organisms for agriculture; and the biological impacts of water use in agroecosystems. Globalization of agriculture is explored, and includes drivers of change, such as shifting diets, and biological challenges, such as the spread of pest species. The final chapters outline different management methods for sustainable management of agroecosystems, and consider the future challenges and opportunities for agriculture and the biology of agroecosystems.
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Book chapters on the topic "Tropical peat soil"

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Yustiawati, Kazuto Sazawa, M. Suhaemi Syawal, Hideki Kuramitz, Takeshi Saito, Toshiyuki Hosokawa, Masaaki Kurasaki, and Shunitz Tanaka. "Peat Fire Impact on Water Quality and Organic Matter in Peat Soil." In Tropical Peatland Ecosystems, 281–96. Tokyo: Springer Japan, 2016. http://dx.doi.org/10.1007/978-4-431-55681-7_18.

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Hatano, Ryusuke, Yo Toma, Yohei Hamada, Hironori Arai, Helena Lina Susilawati, and Kazuyuki Inubushi. "Methane and Nitrous Oxide Emissions from Tropical Peat Soil." In Tropical Peatland Ecosystems, 339–51. Tokyo: Springer Japan, 2016. http://dx.doi.org/10.1007/978-4-431-55681-7_22.

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Arsyad, Ardy, and Indra H. Ratu. "The Effect of Helix Piles-Raft Foundation on Elastic and Consolidation Settlements in Tropical Fibrous Peat Soil." In Sustainable Civil Infrastructures, 246–56. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-01917-4_20.

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Nakkeeran, Sevugapperumal, Perumal Renukadevi, and K. E. A. Aiyanathan. "Exploring the Potential of Trichoderma for the Management of Seed and Soil-Borne Diseases of Crops." In Integrated Pest Management of Tropical Vegetable Crops, 77–130. Dordrecht: Springer Netherlands, 2016. http://dx.doi.org/10.1007/978-94-024-0924-6_4.

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Singh, V. K., B. S. Dwivedi, S. S. Rathore, R. P. Mishra, T. Satyanarayana, and K. Majumdar. "Timing Potassium Applications to Synchronize with Plant Demand." In Improving Potassium Recommendations for Agricultural Crops, 363–84. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-59197-7_13.

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AbstractPotassium (K) demand by crops is almost as high as that of nitrogen (N) and plays a crucial role in many plant metabolic processes. Insufficient K application results in soil K mining, deficiency symptoms in crops, and decreased crop yields and quality. Crop K demands vary with crop types, growth patterns, nutrient needs at different physiological stages, and productivity. Science-based K application in crops needs to follow 4R Nutrient Stewardship to ensure high yield, improved farm income, and optimum nutrient use efficiency. Studies around the world report widespread K deficiency, ranging from tropical to temperate environments. Long-term experiments indicate significant yield responses to K application and negative K balances where K application is either omitted or applied suboptimally. Limited understanding of K supplementation dynamics from soil non-exchangeable K pools to the exchangeable and solution phases and over-reliance on native K supply to meet crop demand are major reasons for deficit of K supply to crops. Research on optimum timing of K fertilizer application in diverse climate–soil–crop systems is scarce. The common one-time basal K management practice is often not suitable to supply adequate K to the crops during peak demand phases. Besides, changes in crop establishment practices, residue retention, or fertigation require new research in terms of rate, time, or source of K application. The current review assesses the synchrony of K supply from indigenous soil system and from external sources vis-à-vis plant demand under different crops and cropping systems for achieving high yield and nutrient use efficiency.
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Katase, T. "Phenolic acids in boreal peats from Finland and comparison with those from tropical and temperate areas." In Plant-Soil Interactions at Low pH: Principles and Management, 71–74. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0221-6_9.

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Nwaogu, Chukwudi. "Improving Food Security by Adapting and Mitigating Climate Change-Induced Crop Pest: The Novelty of Plant-Organic Sludge in Southern Nigeria." In African Handbook of Climate Change Adaptation, 1659–84. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-45106-6_135.

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AbstractClimate change is a global issue threatening food security, environmental safety, and human health in tropical and developing countries where people depend mainly on agriculture for their livelihood. Nigeria ranks among the top in the global yam production. It has the largest population in Africa and has been able to secure food for its growing population through food crops especially yam. Unfortunately, the recent increase in termites’ colonies due to climate change threatens yam yield. Besides harming man and environment, pesticides are expensive and not easily accessible to control the pests. This prompted a study which aimed at applying a biotrado-cultural approach in controlling the termites, as well as improving soil chemical properties and yam production. The study hypothesized that Chromolaena odorata and Elaeis guineensis sludge improved soil nutrient and yam yield and consequently decreased termites’ outbreak. In a randomized design experiment of five blocks and five replicates, five different treatments including unmanaged (UM), Vernonia amygdalina (VA), Chromolaena odorata (CO), Elaeis guineensis (EG) liquid sludge, and fipronil (FP) were applied in termites-infested agricultural soil. Data were collected and measured on the responses of soil chemical properties, termites, and yam yield to treatments using one-way ANOVA, regression, and multivariate analyses. The result showed that Chromolaena odorata (CO) and EG treatments were the best treatments for controlling termites and increase yam production. Termites were successfully controlled in VA and FP treatments, but the control was not commensurate with yam production. The experiment needs to be extended to other locations in the study region. It also requires an intensive and long-term investigation in order to thoroughly understand (i) the influence of climate change on the termites’ outbreak, (ii) the extent of termite damage to the crops, (iii) the impacts of climate change and variability on yam yields, (iii) the agricultural and economic benefits of the applied treatments, and (iv) the ecological and human health safety of the treatments.
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Susilawati, H. L., A. Pramono, P. Setyanto, and K. Inubushi. "Soil amelioration on peat and its effect on methane (CH4) emission and rice yield." In Tropical Wetlands – Innovation in Mapping and Management, 109–16. CRC Press, 2019. http://dx.doi.org/10.1201/9780429264467-17.

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Yormah, Thomas B. Rick, and Michael H. B. Hayes. "Humic Substances from a Tropical Soil." In Humic Substances, Peats and Sludges, 176–86. Elsevier, 1997. http://dx.doi.org/10.1016/b978-1-85573-805-8.50019-7.

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Sposito, Garrison. "Soil Acidity." In The Chemistry of Soils. Oxford University Press, 2016. http://dx.doi.org/10.1093/oso/9780190630881.003.0015.

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A soil is acidic if the pH value of the soil solution is less than 7.0. This condition is met in many soils where rainfall exceeds evapotranspiration, including Alfisols, Histosols, Inceptisols, Oxisols, Spodosols, and Ultisols—almost half of the ice-free land area worldwide. Soils of the humid tropics offer examples of acidic soils (Ultisols and Oxisols), as do soils of forested regions in the temperate zones of Earth (Alfisols, Histosols, Inceptisols, and Spodosols). Soils in peat-producing wetlands and those influenced strongly by oxidation reactions, such as rice-producing uplands, can be mentioned as examples in which the biota play a direct role in acidification. The phenomena that produce a given proton concentration in the soil solution to render it acidic are complex and interrelated. Those pertaining to sources and sinks for protons are shown in Fig. 11.1, which is a special case of Fig. 1.4 with “free cation or anion” in the center of the latter figure now interpreted as H+. In addition to the biogeochemical determinants of soil acidity, the field-scale transport processes wetfall (rain, snow, throughfall), dryfall (deposited solid particles), and interflow (lateral movement of soil water beneath the land surface down hill slopes) carry protons into a soil solution from external sources. Their existence and that of proton-exporting processes, such as volatilization and erosion, underscore the fact that the soil solution is an open natural water system subject to anthropogenic inputs that may dominate the development of soil acidity. Industrial effluents, such as sulfur and nitrogen oxide gases or mining waste waters, that produce acidic deposition or infiltration, and nitrog-enous fertilizers, the transformation and transport of which produce acidic soil conditions, are examples of anthropogenic inputs. Despite all this complexity, proton cycling in acidic soils at field scales has been quantified well enough to allow some general conclusions to be drawn. Acidic deposition, production of CO2(g) and humus, plus proton biocycling, all serve to increase soil solution acidity, whereas proton adsorption and mineral weathering serve to decrease it.
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Conference papers on the topic "Tropical peat soil"

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Nurulita, Y., Yuharmen, A. Fitri, Khairullinas, C. Hardiyanti, S. S. Shar, and T. T. Nugroho. "Biotic elicitor, Staphylococcus aureus, stimulated antibiotics production from a local fungus of tropical peat swamp soil, Penicillium sp. LBKURCC34." In THE 8TH INTERNATIONAL CONFERENCE OF THE INDONESIAN CHEMICAL SOCIETY (ICICS) 2019. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0002038.

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Kolay, P. K., M. R. Aminur, S. N. L. Taib, and M. I. S. Mohd Zain. "Correlation between Different Physical and Engineering Properties of Tropical Peat Soils from Sarawak." In GeoShanghai International Conference 2010. Reston, VA: American Society of Civil Engineers, 2010. http://dx.doi.org/10.1061/41101(374)9.

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Rodrigues, Luciana Machado, and Lui´s Frederico Pinheiro Dick. "Influence of Humic Substances on the Corrosion of the API 5LX65 Steel." In 2002 4th International Pipeline Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/ipc2002-27230.

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Aiming to simulate the underground corrosion of pipeline steels in tropic soils, the electrochemical behavior and corrosion morphology of API 5LX65 steel were studied in 0.01molL−1 Na2SO4 solutions with additions of humic (HA) or fulvic (FA) acids extracted from a peat soil. These humic substances have a higher carboxylic and nitrogenated character for HA, and a higher concentration of oxidized groups for FA, as determined by infrared (FTIR) and Raman spectroscopies. The corrosion tests showed that HA and FA enhance the pitting corrosion of the API 5LX65 steel. The observed pits are always associated to the presence of the rounded calcium aluminate inclusions of API 5LX65. Raman spectra of the corrosion products partially covering pits and inclusions suggest the formation of organic Fe compounds. The influence of humic substances on pit nucleation was attributed to passivity breakdown on the interface between Fe and inclusions, by the formation of partially soluble compounds of Fe and humic substances.
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