scholarly journals THE INFLUENCE OF DIFFERENT PURITY OF NATURAL ALFALFA SEEDS ON THE PROCESSING EFFICIENCY

AGROFOR ◽  
2021 ◽  
Vol 4 (2) ◽  
Author(s):  
Dragoslav ĐOKIĆ ◽  
Rade STANISAVLJEVIĆ ◽  
Dragan TERZIĆ ◽  
Jasmina MILENKOVIĆ ◽  
Goran JEVTIĆ ◽  
...  
Keyword(s):  
Seed Quality ◽  
Weed Species ◽  
Laboratory Assessment ◽  
Forage Crops ◽  
Processing Efficiency ◽  
Seed Processing ◽  
Alfalfa Seed ◽  
The Difference ◽  
Crop Condition ◽  
Alfalfa Seeds

This paper presents the results of the seed processing of ten lots of natural alfalfa seed with different purity (from 68.0% to 86.5%). The test was carried out at the seed processing center of the Institute for forage crops Kruševac-Serbia. Seed losses, processing output, seed yield and quality of the processed seed were investigated. It is important that the difference between the amounts of pure seed from laboratory assessment and the actual amount after processing, are low. The purity of natural alfalfa seed depends on the crop condition and the harvest process. In the seed processing of small-grained leguminous plants, the processing output of seed is directly dependent on the percentage of weed species and other species in the natural seed. Seeds of quarantine weeds of dodder and curly dock are a particularly big problem in alfalfa seeds. In the case of high-purity seeds with low quarantine weeds share, processing output are high. By the legal procedure on the seed quality, the content of pure seed, inert materials, weeds and other species in the processed seeds is defined. The efficiency of the alfalfa seed processing depends on the initial purity of the seed, as well as the applied technical and technological process of seed processing. Based on the obtained results, it is possible to optimally adjust and select the appropriate equipment for the processing of alfalfa seed, depending on the quantity and type of weeds and other ingredients in the natural alfalfa seeds.

scholarly journals The influence of impurities in natural seeds of alfalfa and red clover on the seed cleaning process

2021 ◽  
Vol 25 (1) ◽  
pp. 32-35
Author(s):  
Dragoslav Đokić ◽  
Dragan Terzić ◽  
Vera Rajičić ◽  
Sanja Živković ◽  
Violeta Oro ◽  
...  
Keyword(s):  
Physical Properties ◽  
Red Clover ◽  
Cleaning Process ◽  
Weed Seed ◽  
Forage Crops ◽  
Seed Processing ◽  
Cleaning Equipment ◽  
Influence Of Impurities ◽  
Alfalfa Seeds

The paper presents the results of the cleaning process of five different lots of natural alfalfa seeds and five different lots of natural red clover seeds. Natural alfalfa and red clover seeds had 75 % to 77 % purity. The experiment was performed in the seed processing center of the Institute for Forage Crops Kruševac. Seed cleaning is performed on different machines that work on the principle of differences in the physical properties of seeds. Significant parameters that define the quality of seeds after processing on the cleaning equipment are the amount of pure seed, weed seed, the seed of other crops, inert matter, amount of pure processed seed, seed losses and processing output. The obtained results enable the correct adjustment of the equipment for the seed processing, depending on the amount and type of weeds and other impurities found in the natural seed of alfalfa and red clover.

METHOD OF INCREASING THE PRODUCTIVITY OF ALFALFA SEED

2016 ◽  
Vol 11 (3) ◽  
pp. 5-8
Author(s):  
Ахметзянова ◽  
Railya Akhmetzyanova
Keyword(s):  
Seed Production ◽  
Field Research ◽  
Weather Conditions ◽  
Nutrient Status ◽  
Field Studies ◽  
Potassium Sulfate ◽  
Forage Crops ◽  
Experimental Scheme ◽  
Alfalfa Seed ◽  
Alfalfa Seeds

Alfalfa seed production depends on pollination of flowers and the level of large number of full seeds formation in the pollination of flowers per 1 bean, as well as the weight of 1000 seeds. Field studies were carried out in LLC “Urta Saba” of Sabinsky municipal district of the Republic of Tatarstan in 2014-2016. The soil is gray forest of heavy-loamed and granulometric distribution. Agrochemical indicators of soil are typical. The common method of field research with forage crops was used. During the experiments the weather conditions were madi-favourable for alfalfa seeds. The total area of plots is 80 m2, the accounting is 60 m2. The experimental scheme is as follows: 1) control without fertilizing; 2) foliar fertilizing by potassium sulfate; 3) fertilizing by potassium-magnesium; 4) fertilizing by potassium bisulfate; 5) fertilizing by potassium chloride. The object of research is variegated-hybrid alfalfa of Gyuzel. It is necessary to create optimum conditions for plant nutrient status for normal fruit formation of alfalfa. It was revealed, that the plants develop better during foliar fertilizers by potassium. Carrying out a foliar feeding of plants during flowering helped to raise the connection of beans on inflorescence of alfalfa, to increase the number of normally developed alfalfa seeds, by reducing the number of shrunken, undeveloped ones. And, in turn, it was accompanied with an increase in seed production and sowing qualities of alfalfa seeds.

scholarly journals Appearance and frequency of fungi on alfalfa seed in Serbia

2011 ◽  
Vol 27 (4) ◽  
pp. 1579-1584
Author(s):  
T. Vasic ◽  
S. Andjelkovic ◽  
S. Zivkovic ◽  
B. Andjelkovic ◽  
D. Terzic ◽  
...  
Keyword(s):  
Seed Quality ◽  
Animal Husbandry ◽  
Fusarium Spp ◽  
Forage Crops ◽  
High Quality ◽  
Yield And Quality ◽  
Alfalfa Seed ◽  
Danube Region ◽  
Penicillium Spp

Alfalfa is one of the most significant forage crops in Serbia, and is known colloquially as ?the queen of forage crops? due its significant role in livestock nutrition. Production of high quality forage and seed is of high importance for animal husbandry in Serbia. Fungi infections decrease seed quality which has influence on yield and quality of forage and on period of alfalfa utilization. Samples of alfalfa seed from Middle Banat, Danube region, Nis and Sumadija area were examined. Samples were taken from two alfalfa cultivars K-22 and K-28. Based on the examinations of appearance of fungi on the alfalfa seed, following fungi were determined: Fusarium spp., Alternaria spp., Stemphylium spp., Epiccocum spp., Nigrospora spp., Rhizopus spp., Mucor spp., Aspergillus spp. and Penicillium spp. Primary species were from genera Fusarium and Alternaria, and other species were represented in different percentages.

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.

scholarly journals Analysis of the process of alfalfa seed cleaning using seed processing equipment

2019 ◽  
Vol 23 (2) ◽  
pp. 41-45
Author(s):  
Dragoslav Djokić ◽  
Rade Stanisavljević ◽  
Dragan Terzić ◽  
Jasmina Milenković ◽  
Vjačeslav Kozlov ◽  
...  
Keyword(s):  
Processing Equipment ◽  
Seed Processing ◽  
Alfalfa Seed

Preharvest glyphosate in alfalfa for seed production: Effect on alfalfa seed yield and quality

2003 ◽  
Vol 83 (1) ◽  
pp. 189-197 ◽  
Author(s):  
W. E. May ◽  
H. A. Loeppky ◽  
D. C. Murrell ◽  
C. D. Myhre ◽  
J. J. Soroka
Keyword(s):  
Seed Production ◽  
Seed Yield ◽  
Seed Quality ◽  
Seedling Emergence ◽  
Canada Thistle ◽  
Seedling Vigour ◽  
Yield And Quality ◽  
Alfalfa Seed ◽  
Medicago Sativa L ◽  
Seed Yields

Preharvest applications of glyphosate have been shown to be effective in controlling Canada thistle in annual crops, but may reduce alfalfa seed yield depending on time and rate of application. The objective of this study was to determine the effect of preharvest applications of glyphosate on subsequent alfalfa seed yield and quality. The effects of timing, 1, 26, 51 and 76% alfalfa seed pod maturity, and rate, 0, 440, 880, 1320, and 1760 g a.i. ha-1, of a preharvest application of glyphosate on alfalfa seed yield and quality in the year of application, and regrowth and seed yield in the following year were determined. The rate of glyphosate applied did not affect seed yield in the application year; however, in the following year, growth and seed yield were reduced as rates increased. Delaying the application of glyphosate increased seed yields in the application year, but decreased alfalfa regrowth and flowering the following year. Germination and seedling emergence were not affected by the rate or timing of the glyphosate. A preharvest application of glyphosate at 1760 g a.i. ha-1 at 76% pod maturity is a viable option in the last year of seed production. Key words: Alfalfa (Medicago sativa L.), glyphosate, abnormal seeds, seed quality, and seedling vigour

scholarly journals Limit between stages I and II of a seed imbibition curve

2004 ◽  
Vol 61 (1) ◽  
pp. 17-20
Author(s):  
Sheila Zambello de Pinho ◽  
Lídia Raquel de Carvalho ◽  
Maria Elena Aparecida Delachiave
Keyword(s):  
Asymptotic Distribution ◽  
Seed Quality ◽  
Statistical Tests ◽  
Research Projects ◽  
Seed Imbibition ◽  
Stage Change ◽  
Data Point ◽  
The Difference ◽  
Student’S T

A knowledge of the imbibition stages shown by different species, is essential in research projects aiming at improvement of seed quality by treatments such as osmotic conditioning, initial wetting, and the use of bioregulators. The objective of this study was to establish a methodology to determine the limit between the first and second stages of the process, considering the model W = f(t) - (a - w0)exp(-kt), using statistical tests. This limit was determined using an asymptotic distribution of an estimator function. The data point beyond which the difference (W*) is no longer significant was determined using Student's T statistics. The model is <img border=0 id="_x0000_i1026" src="../../../img/revistas/sa/v61n1/a03img01.gif" align=absmiddle > or = (0.434 + 0.00162 t) - (0.434 - w o)exp(-0.121 t), with r² = 0.98 and W* = (0.434 - w o)exp(-0.121 t) fits the utilized data. The calculated t value (27.2 hours) is smaller than the value that was determined considering a 1% value difference between the asymptote and the estimated model as a criterion for the stage change. This two-hour difference corresponds to 0.28% in absorbed water.

Detection and Isolation of Salmonella from Naturally Contaminated Alfalfa Seeds Following an Outbreak Investigation

1999 ◽  
Vol 62 (6) ◽  
pp. 662-664 ◽  
Author(s):  
GREGORY B. INAMI ◽  
SILVIA E. MOLER
Keyword(s):  
Enzyme Immunoassay ◽  
Disease Outbreaks ◽  
Culture Method ◽  
Foodborne Disease ◽  
Seed Sample ◽  
Alfalfa Seed ◽  
Salmonella Serotype ◽  
Larger Sample ◽  
Culture Positive ◽  
Alfalfa Seeds

Naturally contaminated alfalfa seeds, epidemiologically linked to foodborne disease outbreaks in Oregon and British Columbia, were tested for the presence of Salmonella. Ten sample units from the suspected lot were sprouted and grown for 4 days. After enrichment of the grown sprouts, an enzyme immunoassay (EIA) and culture method (modified procedure of the Food and Drug Administration Bacteriological Analytical Manual) were used for the detection and isolation of Salmonella. Four of the 10 sample units were positive with the EIA; however, 5 of the 10 sample units were culture positive (four were positive for Salmonella serotype Newport and a fifth was positive for Salmonella serotype Albany and serotype Schwarzengrund). The positive alfalfa seed sample units were further tested after shredding, soaking, and washing before culturing. Results suggest that sprouting and shredding methods may yield greater detection and recovery rates of Salmonella, but more research with a larger sample size is warranted.

THE BIOLOGY OF CANADIAN WEEDS.: 25. Silene alba (Miller) E. H. L. Krause

1977 ◽  
Vol 57 (4) ◽  
pp. 1103-1114 ◽  
Author(s):  
J. McNEILL
Keyword(s):  
Weed Species ◽  
Forage Crops ◽  
Silene Alba ◽  
Melandrium Album ◽  
Agricultural Areas

A review is provided of information on the biology of Silene alba (Lychnis alba, Melandrium album), a weed species introduced from Eurasia, which occurs across the agricultural areas of Canada. A serious weed, especially of leguminous forage crops, white cockle is resistant to common herbicides such as 2,4-D and 2,4,5-T.

Sign in / Sign up

Export Citation Format

Share Document