Relevant bibliographies by topics / Onion seed quality size grading

Academic literature on the topic 'Onion seed quality size grading'

Author: Grafiati
Published: 8 September 2023

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Journal articles on the topic "Onion seed quality size grading"

1

Gamiely, Sayed, D. A. Smittle, H. A. Mills, and G. I. Banna. "Onion Seed Size, Weight, and Elemental Content Affect Germination and Bulb Yield." HortScience 25, no. 5 (May 1990): 522–23. http://dx.doi.org/10.21273/hortsci.25.5.522.

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Yields of `Granex 33' and `Behairy' onions (Allium cepa) closely correlated with the weight of the seeds used to establish the stand. Elemental content was consistently higher in heavier seeds, but elemental concentrations in the seeds were generally negatively related to seed weight, onion growth, and yield. A combined size-aspiration grading was an effective means of eliminating seed with low-yield potential.
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Suruthi, S., K. Sujatha, and C. Menaka. "Size grading Standardization of sieve size for grading of barnyard millet (Echinochloa frumentacea L.) MDU-1." Journal of Applied and Natural Science 11, no. 2 (June 10, 2019): 524–27. http://dx.doi.org/10.31018/jans.v11i2.2096.

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Seed grading is an important practice for better crop and also useful in separation of quality seeds in a seed lot. The aim of grading is to improve the uniformity of the seed lot by removing seeds of the same species with low quality. The present study was carried out to find out the optimum sieve size for size grading of seeds of barnyard millet (Echinochloa frumentacea L.) MDU1. The effect of seed size on physiological parameters were evaluated using BSS 10×10, BSS12×12 and BSS14×14 wire mesh sieves along with control. The barnyard millet seeds graded with BSS12×12 recorded higher seed recovery (76.67%) than other sieves used with required germination (92%), 1000 seed weight (3.9g), root length (14.1cm), shoot length (8.45cm), dry matter production (0.027g/10 seedlings) and vigour index (1983). Hence, seeds of barnyard millet MDU1 could be size graded using BSS12×12 sieve for more seed recovery with required seed quality standards as compared to BSS 10×10, BSS14×14 and ungraded seeds.
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Daheriya, Mahendra, D. K. Verma, Eresh Kumar Kuruba, K. C. Mahajan, and Neerav U. Joshi. "Advances in Multi-Fruit and Vegetable Grading: A Comprehensive Review." International Journal of Environment and Climate Change 13, no. 9 (July 17, 2023): 1239–45. http://dx.doi.org/10.9734/ijecc/2023/v13i92351.

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Grading fruits and vegetables has become essential for cross-border trade. There are various methods and technologies used for grading fruits and vegetables. In India, fruit growers mainly rely on manual grading, which is costly, labour-intensive, and affected by seasonal labour shortages. Manual grading is inefficient, inconsistent, and time-consuming. Grading of fruits and vegetables in ensuring the quality of produce and meeting consumer demands. The World Trade Organization (WTO) emphasizes high-quality graded products, prompting farmers to seek agricultural produce-grading machines for labour alleviation, time savings, and improved quality. Fruit grading enhances value, packaging, handling, and overall marketing. Typically, fruits are graded based on size, making them more desirable for export. Size-based grading methods include various types of graders. Weight grading is based on density and specific gravity. Market responsiveness necessitates improved grading and sorting practices to ensure quality assessment. Size variations in vegetables like potatoes and onions serve as the basis for categorization according to each country's market requirements.
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Deleuran, Lise C., Merete H. Olesen, and Birte Boelt. "Spinach seed quality: potential for combining seed size grading and chlorophyll fluorescence sorting." Seed Science Research 23, no. 4 (June 7, 2013): 271–78. http://dx.doi.org/10.1017/s0960258513000202.

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AbstractSpinach (Spinacia oleracea L.) seed quality is important for subsequent establishment of baby leaf and other spinach products. The indeterminate flowering pattern in spinach produces seeds of different sizes, and consequently a non-uniform seed lot. Sorting seeds based on novel sorting methods might therefore improve the establishment of spinach for producers. Spinach seeds were harvested at five different times (H1, H2, H3, H4 and H5) starting 3 weeks before estimated optimum harvest time. The harvested seeds were sorted according to chlorophyll fluorescence (CF) and seed size. Two harvest times 6 d apart were selected for further studies of seed development and germination counts. Analysis of mean germination time (MGT) of four germination counts (3, 7, 14 and 21 d) showed that smaller seed sizes ( < 3.25 mm) have lower MGT than seeds of larger sizes (>3.25 mm). A larger proportion of 2.5–3.25 mm size seeds had germinated on day 3 than both their larger and smaller counterparts at the later time of harvest (H4). Seeds with a diameter below 2.5 mm displayed the lowest MGT. Commercially, the use of chlorophyll fluorescence (CF)-sorted seeds, in combination with seed size sorting, may provide a useful tool for enhancing seed quality. Here our results demonstrate that a greater number of seeds with a low CF level had germinated on day 3 compared to the seeds with high CF levels. It is of relevance to develop a technology that could identify seeds that are sufficiently developed to germinate and successfully establish in the field regardless of seed size.
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Md Asaduzzaman, Mohammad Ahsan Habib, Md Rezaul Haque, Md Shafiqul Islam, and Jebunnahar Khandakar. "Survey on Technical Efficacy of the Farmers and Their Satisfaction Level for the Production of Onion Seeds in Bagmara Upazila, Rajshahi District." Research in Agriculture Livestock and Fisheries 7, no. 3 (December 31, 2020): 383–91. http://dx.doi.org/10.3329/ralf.v7i3.51357.

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Onion seed production is not exactly same as the cultivation of the onion as a crop. Due to lack of recommended standard cultural practices, an onion seed producer in Bangladesh is facing different levels of difficulties. To address this issue, the present study has been undertaken for generating farm level information on the production and input use pattern in the onion seed cultivation. Using semi structured questionnaire, a total of 50 onion farmers is randomly selected from Bagmara upazila, Rajshahi district for the interview. The results indicate that there were so many constraints on onion seeds production such as unavailability of high yielding varieties, shortage of information about recommended fertilizer doses, bulb size, planting space, setting of planting time, etc. At the same time, farmers are also fronting problem regarding paucity of separated land, absence of specialized onion cold storages. Considering the above- mentioned problems, the results showed that 70% of the farmers are not satisfied with the onion seeds yield. The study suggested that distribution system of the quality onion seeds has to be improved coupled with the onion research in Bangladesh has to govern by the dynamics of seed grower’s quality preferences and their socio- eco- climatic infrastructure. Furthermore, it is indispensable to introduce training programs for the farmers for improving their knowledge about management practices as seed production required highly skill person Res. Agric., Livest. Fish.7(3): 383-391, December 2020
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Randle, William M. "ONPLANT: A PRECISION PLANTING MODEL FOR ONIONS." HortScience 25, no. 9 (September 1990): 1065e—1065. http://dx.doi.org/10.21273/hortsci.25.9.1065e.

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An interactive computer-based model has been developed to simulate the effects of precision planting onion on quality and yield. Variables used by the model are seed germination, plant survival, planter efficiency, onion growth potential, maximum onion size, sizing potential and inside-outside bed effects. Data bases obtained from 3 onion cultivars were used in the development of the model. The model shows when germination and plant survival are high, single seed drops by the planter results in high yield and large bulbs. At lower germination and survival values, however, a compromise is needed between maximizing yield and obtaining large bulbs.
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R, VIMALA, PONNUSAMY A S, and THIAGARAJAN K. "Standardisation of seed processing methods for hybrid rice." Madras Agricultural Journal 88, December (2001): 632–35. http://dx.doi.org/10.29321/maj.10.a00390.

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Standardisation of seed processing methods for hybrid rice was carried out at Department of Seed Science and Technology, TNAU Coimbatore. Considering, the high seed recovery and seed quality, 1.7 mm sieve can be used for size grading of TNRH-16 and TNRH-17 rice hybrids and 1.6 mm sieve for CORH-1 hybrid. Specific gravity separation of size graded seeds into four density grades showed the superiority of heavy, medium and light seeds over very light seeds in terms of seed quality parameters. Among the hybrids, CORH-1 showed its superiority in respect to seed quality over TNRH-16 and TNRH-17.
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8

P, Geetharani, Vijayakumar A, Geetha R, and Natarajan S. "Effect of fruit size on seed quality characeristics of pumpkin (Cucurbita moschata)." Madras Agricultural Journal 94, July (2007): 278–79. http://dx.doi.org/10.29321/maj.10.100690.

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Seed size is one of the characters associated with seed quality. The influence of seed size on seedling vigour and crop performance has been established in different crops like soybean, maize, gram and ashgourd. Variability in fruit size and shape is seen in pumpkin, even under good management. A significant correlation was reported between the fruit weight and number of good seeds in cucumber. Large sized fruits selected at the field level ensured recovery of large size seeds, which produce healthy, vigorous seedlings that was reported in ashgourd. Such information is lacking in pumpkin. The present studies were undertaken to trace out the influence of fruit grading on seed quality in pumpkin cv. CO2
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9

Sivasubramaniam, S., S. Ambika, and M. Vetrivel. "Influence of size grading on physiological parameters in Tephrosia (Tephrosia purpurea) MDU (KO)-1." Journal of Applied and Natural Science 9, no. 1 (March 1, 2017): 639–41. http://dx.doi.org/10.31018/jans.v9i1.1244.

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Seed grading is an important practice for better crop establishment and to improve efficiency of planting ratio in field and also useful in separation of quality seed in a seed lot. The influence of seed size on physiological and biochemical seed quality characters were evaluated in Tephrosia seeds using seeds retained on 5.5/64″, 6/64″ and 7/64″ sieves along with control. The estimations revealed that larger size seeds retained on 7/64" sieves recorded the maximum recovery (64 %), 100 seed weight (2.0 g), speed of germination (14.1) germination ( 86 %), root length (8.5 cm), shoot length (11.0 cm), dry matter production (15.92 mg seedlings-10), vigour index (1677) and protein (10.56 %) compared to BSS 5.5 / 64'', BSS 6 / 64'' and ungraded seeds.
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10

A, SABIR AHAMED, VANANGAMUDI K, BHARATHI A, and VISWANATHAN R. "Standardisation of screen size and machine speed for grading sunflower seeds." Madras Agricultural Journal 90, December (2003): 682–85. http://dx.doi.org/10.29321/maj.10.a00160.

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In an attempt to find out a suitable sieve size and machine speed for grading sunflower seeds in a two screen cleaner cum grader, performance of various sieve sizes (round perforated) and machine speed on seed quality was studied. Decrease in sieve aperture size from 5.5 to 4.5 mm and increase in machine speed from 150 to 225 rpm improved the recovery percentage. However, the physical attributes such as seed length, width, and weight decreased with the decrease in sieve aperture size and increase in grading speed. Germination was higher in seeds retained on 5.5 mm sieve (98.0%) and lower in seeds passed through 4.5 mm sieve (86.0%). The seedling growth and vigour parameters also showed a similar trend. Germination, seedling growth and vigour index of seeds graded at a midrange speed of 175.to 200 rpm were more compared to the extreme speeds of 150 and 225 rpm. For maximum recovery and better sowing quality, grading sunflower seeds using 4.5 mm sieve at a speed range of 175 to 200 rpm was found to be optimum..
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Dissertations / Theses on the topic "Onion seed quality size grading"

1

P, Murugesan. "Murugesan, P, 1994. Studies on certain seed technological aspects of Bellary (Allium cepa L) and Aggregatum onion, 1994, Tamil Nadu Agriculture University. Page 124." Dissertation/Thesis, Tamil Nadu Agricultural University, 1994. http://krishi.icar.gov.in/jspui/handle/123456789/60820.

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Onion Seed Quality
Studies were conducted with seeds of Bellary onion cv Nasik Red and Aggregatum onion cv Mutlur local to elicit information on (1) seed quality of size graded seeds, (2) Seed deterioration pattern under ambient as well as at different RH levels (3) Topography of seed deterioration sequences and (4) hydration -de-hydration treatment on maintenance of viability and vigour as well as productivity. Seed lots of both the type of onion can be processed using ISS170 wire mesh to improve the viability and vigour of seeds.
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