Effectiveness of Seed Processing Machinery on Seed Quality Improvement in Paddy (Oryza sativa L.)

2016 ◽  
Vol 3 (3) ◽  
Author(s):  
RABINDRA KUMAR
Keyword(s):  
Quality Improvement ◽  
Specific Gravity ◽  
Seed Quality ◽  
Oryza Sativa L ◽  
Medium Term ◽  
Seed Processing ◽  
Seed Loss ◽  
Processing Line ◽  
Gravity Separator ◽  
Term Storage

A series of seed-processing machines were used to evaluate seed quality improvement in paddy during the Kharif season 2013-14. The processing machines proved an efficient tool in producing quality seeds. The consistent and higher seed quality (germination 91.67% and physical purity 99.83%) could be achieved by efficient use of processing machines. The product and separate (reject) from individual machines were analysed to evaluate machine efficiency in separating the seed components as well as impurities from the harvested lot. The air-screen machines were found effective in removing dead seeds, whereas specific gravity separator removed abnormal seeds significantly. Gradual increase in seed quality was recorded with decrease in recovery in the processing line. Seed loss in reject port was always associated with handling of seed lots by each machine and observed only 1.30%. Specific gravity separator was found essential for the seed lot of medium-term storage or for the buffer stocking.

Influence of Seed Quality Upgrading by Processing Machines in Soybean var. DSb-21

2021 ◽  
Author(s):  
Vishwanath . ◽  
Ravi Hunje ◽  
Pavan Shinde
Keyword(s):  
Specific Gravity ◽  
Seed Size ◽  
Seed Quality ◽  
Mechanical Damage ◽  
Soybean Seed ◽  
Processing Unit ◽  
Seedling Vigour ◽  
Seed Processing ◽  
Gravity Separator ◽  
Size Grading

Background: Soybean is the “Miracle crop” of the 21st century due to its nutritional value and multiple uses. Maintenance of soybean seed quality is a major issue as it is more vulnerable to mechanical damage from harvesting to next sowing. Seed processing.by use of individual or combination of machineries will help in getting physically pure, uniform, healthy sound seeds with enhanced planting value. With the advent of new improved varieties, it is advisable to find out the individual or combination of seed processing machines like air screen cleaner, specific gravity and spiral separator to find out the effective and economical seed processing to get maximum recovery with up-graded quality of seeds.Methods: The seeds of soybean var. DSb-21 were used for seed size grading using different sieve sizes and the good seeds obtained from different size grading were processed through specific gravity separator and the good seeds obtained from specific gravity separator were further processed through spiral separator and the processed seeds obtained from these machine combinations were used to assess the seed quality. The seed processing was carried out at Seed Processing Unit and seed quality studies were carried out in the Seed Quality and Research Laboratory, Seed Unit, University of Agricultural Sciences, Dharwad during 2017-18. The experiment was laid in completely randomized design.Result: The influence of sequential processing through seed size grader followed by specific gravity separator and spiral separator on seed quality revealed that, the good seeds obtained from spiral separator after seed grading with recommended sieve size 3.75 mm recorded higher recovery (76.95%), seed germination (89.00%), seedling vigour index (3567) and lower seed mechanical damage (11.67%) followed by 4.00 mm (74.80%, 87.33%, 3418 and 12.33%, respectively) and 4.80 mm (65.64%, 85.00%, 3209 and 13.67%, respectively).

Effect of specific gravity separation on seed quality improvement of coriander var. CO3

2021 ◽  
Vol 23 (2) ◽  
pp. 115-119
Author(s):  
R. Chandraprakash ◽  
P. Masilamani ◽  
P. Rajkumar ◽  
R. Geetha ◽  
V. Alex Albert ◽  
...  
Keyword(s):  
Quality Improvement ◽  
Specific Gravity ◽  
Seed Quality ◽  
Gravity Separation

Optimization of Grading Efficiency of a Specific Gravity Separator to Upgrade the Quality of (Moringa oleifera Lam.) Seeds

2020 ◽  
Vol 107 (10-12) ◽  
Author(s):  
Chandraprakash R ◽  
◽  
Masilamani P ◽  
Rajkumar P ◽  
Geetha R ◽  
...  
Keyword(s):  
Specific Gravity ◽  
Moringa Oleifera ◽  
Seed Quality ◽  
Physical Property ◽  
Germination Percentage ◽  
Design Parameters ◽  
Gravity Separator ◽  
Grade Material ◽  
Vertical Height

The quality of Moringa oleifera seeds need to be ensured before sowing or using the seeds for other commercial purposes like oil extraction. In this study, an attempt was made to increase the efficiency of a specific gravity separator machine to upgrade the quality of moringa seed by suitably changing the machine settings viz., horizontal height (cm), vertical height (cm), and oscillation speed (rpm) of the deck and air blow rate (m3/hr). The optimization of moringa seed quality upgrading specific gravity machine has a horizontal height (cm), vertical height (cm), and air blow rate (m3/hr) adjustments of 0, 1.5, and 4.0 respectively at 450 rpm of deck oscillation. Under the above-optimized conditions, seed lot graded into five categories viz., A, B, C, D and E. Germination percentage of three grade viz., C, D, and E have 93.0%, 97.0%, and 96.0% respectively, which was higher than the germination percentage of ungraded bulk moringa seed lot (91.0%) used in this experiment. Seed with undesirable size and low in weight got separated as ‘A’ grade material. The optimization of moringa seed upgarding process showed the optimal processing conditions for grading the moringa seed based on physical property of the seed. The optimization of the moringa seed-grading machine would provide necessary information on combination of seed, operation and design parameters for enhancing seed quality.

Ensilage of wilted whole crop rice (Oryza sativa L.) using a roll baler for chopped material: Silage quality in long-term storage

2007 ◽  
Vol 53 (2) ◽  
pp. 85-90 ◽  
Author(s):  
Hidenori Kawamoto ◽  
Ryuji Otani ◽  
Akinori Oshibe ◽  
Hiromichi Yamaguchi ◽  
Shin Deguchi ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Long Term Storage ◽  
Silage Quality ◽  
Term Storage

The medium-term prospects for long-term storage systems

2017 ◽  
Vol 35 (1) ◽  
pp. 11-31 ◽  
Author(s):  
David Stuart Holmes Rosenthal
Keyword(s):  
Digital Media ◽  
Media Industry ◽  
Medium Term ◽  
Bulk Storage ◽  
Content Type ◽  
Long Term Storage ◽  
Storage Media ◽  
Technology Changes ◽  
Term Storage

Purpose Increasingly, the content that libraries collect is no longer on paper, a long-lived, medium whose technology changes very slowly and with which they have centuries of experience. Instead, it is stored on relatively short-lived digital media whose technology appears to change rapidly and with which they have little history. The paper aims to discuss this issue. Design/methodology/approach The storage media industry is highly competitive and is currently evolving rapidly as flash, a solid state medium, displaces spinning disk from many applications. Long-term archival storage is a small part of the total storage market. It typically re-uses media and systems intended for more general bulk storage. Findings What are the medium-term prospects for change in this market? Originality/value Much of this material has appeared in blog posts and talks aimed at storage experts, such as the recent DARPA workshop on future of storage. It is presented here for a librarian audience with the necessary additional exposition and background.

EARLY IDENTIFICATION OF SALT TOLERANT GENOTYPES OF RICE (ORYZA SATIVA L.) USING CONTROLLED DETERIORATION

2006 ◽  
Vol 42 (1) ◽  
pp. 65-77 ◽  
Author(s):  
M. Z. ALAM ◽  
T. STUCHBURY ◽  
ROBERT E. L. NAYLOR
Keyword(s):  
Seedling Growth ◽  
Seed Quality ◽  
Oryza Sativa L ◽  
Germination Rate ◽  
Seed Vigour ◽  
Early Seedling Growth ◽  
Early Seedling ◽  
Controlled Deterioration ◽  
Rice Genotypes ◽  
Initial Seed

The response of germination and early seedling growth to levels of salinity (0, 50, 100, 150, 200 and 250 mM NaCl) were examined in single seed lots of ten modern rice genotypes. Unaged and deteriorated rice seeds were germinated in rolled paper towels and in Petri dishes. Initial seed quality, final germination, germination rate and early seedling growth were assessed. The samples of the rice genotypes differed in their initial seed quality (measured in terms of Ki). The effect of deterioration varied depending upon the initial seed quality and the severity of the treatment imposed. Ageing (using the technique of controlled deterioration, CD) for up to 24 h had no effect on final germination levels. Although CD for 30 h only reduced final germination slightly, ageing for 36 or 48 h reduced it greatly. Controlled deterioration for 36 h or longer reduced the final length and the rate of extension of both the plumule and radicle. Combining information about germination in salt solution with that about seed quality enabled a distinction to be made between varieties which performed poorly because they were genetically salt-susceptible from those which germinated poorly due to poor seed quality. It is argued that the seed vigour of seed lots used in genotype evaluation should be assessed in order to avoid discarding potentially useful genotypes because of poor physiological seed quality.

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