scholarly journals Seed moisture range in a soybean plant

2004 ◽  
Vol 26 (1) ◽  
pp. 120-124 ◽  
Author(s):  
Silmar T. Peske ◽  
Alberto Höfs ◽  
Elton Hamer
Keyword(s):  
Moisture Content ◽  
Mechanical Damage ◽  
Soybean Seed ◽  
Tropical Region ◽  
Maturity Stage ◽  
Soybean Seeds ◽  
Soybean Plant ◽  
High Moisture ◽  
Mato Grosso ◽  
Seed Moisture

It is common to see in any soybean plant that seeds reach maturity at different times. Thus the objective of the present study was to determine the magnitude of the seed moisture range at different stages of maturation in a soybean plant. The field study was conducted in a tropical region in the state of Mato Grosso - Brazil, established with foundation seeds of the MTBR-45 cultivar, and at flowering, 100 plants were marked at the same maturity stage. Harvesting began when seeds still were at high moisture content (MC). At each of eight harvesting times, during 16 days, all pods from two plants were harvested and the seeds from each pod were hand threshed individually and determined the moisture content . The results revealed that there is a great distribution of seed MC in a soybean plant, where at physiological maturity, the magnitude can reach more than 30 percentage points. Also, even with an average MC below 12%, there were more than 20 % of the seeds with MC above 13% and some seeds at this point had been waiting to be harvested for more than a week. The following conclusions and/or recommendations can be taken: 1- The great seed MC range in a soybean seed lot harvested at field maturity leads to the presence of seeds susceptible to mechanical damage and with MC unsafe for adequate storage; 2 - It is recommended that harvesting be accomplished when the seeds are in the 15-18% MC range, in order to minimize field deterioration and the percentage of seeds with high MC; 3- Drying is recommended, even when soybean seeds are in their average MC safe for storage.

scholarly journals INFLUENCE OF SOYBEAN SEED MOISTURE CONTENT IN THE RESPONSE TO SEED TREATMENT IN SOYBEAN

2018 ◽  
Vol 5 (2) ◽  
pp. 91-96 ◽  
Author(s):  
Marcos Altomani Neves Dias ◽  
André Kitaro Mocelin Urano ◽  
Deborah Bueno Da Silva ◽  
Silvio Moure Cicero
Keyword(s):  
Moisture Content ◽  
Seed Treatment ◽  
Soybean Seed ◽  
Soybean Seeds ◽  
High Moisture ◽  
Seed Moisture Content ◽  
Seed Moisture ◽  
Physiological Quality ◽  
Seed Respiration ◽  
Key Parameter

Seed treatment (ST) is an important practice for soybean crop. This research had the objective to evaluate the influence of seed moisture content in the response to different spray volumes (SV) used for seed treatment in soybean, considering effects on seed physiological quality. Three seed lots with distinct moistures were used: 7.2%, 10.1% and 13.0%. Untreated seeds (control) and three SV were tested: 8, 13 and 18 mL kg-1. All lots received the same treatment combination, containing insecticide, fungicide, fertilizer and biostimulant. This combination represented 8 mL kg-1 of SV; the doses of 13 and 18 mL kg-1 were obtained by adding 5 and 10 mL kg-1 of water, respectively. Evaluations of seed physiological quality consisted of electrical conductivity, seed respiration, germination and vigor tests. Results of all tests demonstrates that low-moisture soybean seeds (7.2%) are negatively affected by seed treatment within an SV range of 8 to 18 mL kg-1, while untreated seeds with equal moisture are not affected. Oppositely, high-moisture seeds (13.0%) are not affected by the SV tested, while intermediate-moisture seeds (10.1%) are affected by the higher SV. This result highlights seed moisture as a key parameter to be managed before soybean ST, aiming to maintain a high physiological quality.

scholarly journals Mechanical damage caused by the use of grain carts for transport during soybean seed harvest

2018 ◽  
Vol 40 (4) ◽  
pp. 422-427
Author(s):  
Rodrigo Albaneze ◽  
Francisco Amaral Villela ◽  
Jean Carlo Possenti ◽  
Karina Guollo ◽  
Ivan Carlos Riedo
Keyword(s):  
Moisture Content ◽  
Seed Production ◽  
Seed Coat ◽  
Seed Viability ◽  
Mechanical Damage ◽  
Soybean Seed ◽  
Soybean Seeds ◽  
High Quality ◽  
Moisture Contents ◽  
Seed Harvest

Abstract: Mechanical damage constitutes one of the factors limiting production of high quality soybean seeds. The aim of this study was to evaluate the effects on seed viability and mechanical damage caused to soybean seeds when using a grain cart, together with an auger unloading system, as a means of transporting grain from the combine to the truck. Seed samples were collected in two seed production fields in the region of Abelardo Luz, SC, Brazil, at three different times (10:00, 12:30, and 16:00) and from three places (in the combine grain tank, in the grain wagon, and in the truck). The percentages of broken seeds, moisture content, mechanical damage to the seed coat, and germination were evaluated. The use of auxiliary grain cart equipment contributed to an increase in breakage and mechanical injury in seeds, worsening seed viability. Seeds collected at lower moisture contents had higher breakage and higher rates of mechanical damage.

scholarly journals Incidence of storage fungi and hydropriming on soybean seeds

2013 ◽  
Vol 35 (1) ◽  
pp. 35-41 ◽  
Author(s):  
Denis Santiago da Costa ◽  
Nathalie Bonassa ◽  
Ana Dionisia da Luz Coelho Novembre
Keyword(s):  
Seed Germination ◽  
Moisture Content ◽  
Seedling Emergence ◽  
Mechanical Damage ◽  
Soybean Seed ◽  
Accelerated Aging ◽  
Soybean Seeds ◽  
Storage Fungi ◽  
Randomized Experimental Design ◽  
Low Incidence

Priming is a technique applicable to seeds of various plant species; however, for soybean seed there is little available information correlating such technique to the storage fungi. The objective of this study was to assess hydropriming on soybeans seeds and correlate this technique to occurrence of such fungi. For this, soon after acquisition the soybean seeds, cv. M-SOY 7908 RR, were characterized by: moisture content, mechanical damage, viability (seed germination and seedling emergence) and seed health. A completely randomized experimental design was used with treatments arranged into a factorial scheme 2 × 2 [2 levels of incidence of storage fungi (low and high) × 2 hydropriming (with and without) ]. After application of treatments, the seeds were analyzed by: moisture content, viability (seed germination and seedling emergence) and vigor (first count and accelerated aging). The hydropriming is beneficial to improve the quality of soybean seeds with low incidence of storage fungi, with increments on speed germination (first count) and seed germination after accelerated aging test. The high incidence of microorganisms can reduce the hydropriming benefits.

scholarly journals Analysis of soybean germplasm by seed longevity

2020 ◽  
Vol 27 ◽  
pp. 226-231
Author(s):  
O. A. Zadorozhna ◽  
O. M. Bezugla ◽  
O. N. Vus ◽  
O.G. Suprun ◽  
T.P. Shyianova
Keyword(s):  
Fatty Acid ◽  
Moisture Content ◽  
Biochemical Composition ◽  
Fatty Acid Content ◽  
Soybean Seed ◽  
Seed Longevity ◽  
Soybean Seeds ◽  
Aim Analysis ◽  
Seed Moisture Content ◽  
Seed Moisture

Aim. Analysis of soybean (Glycine max (L.) Merr.) germplasm seed longevity with different biochemical composition for further storage optimization in active collections and during long-term storage. Methods. The content of protein, oil, fatty acid composition (palmitic, palmitic-oleic, stearic, oleic, linoleic, linolenic, eicosenic, behenic) in experimental soybean seed samples was analyzed. The process of accelerated storage aging, storage at –20°C were carried out at original seed moisture content and after additional drying. Laboratory and field indexes of seed germinability, mophophysiological state of seedlings, elements of crop structure were evaluated. Results. The longevity of soybean seed germplasm with different biochemical composition, different degree of drying was determined. The statistical relationship between fatty acid content and germination of soybean seeds in experimental and control variants was established. Conclusions. Drying to 4% seed moisture content extends the longevity of soybean seeds with different biochemical composition. Extra drying should be applied in special modes even for seeds with 7% moisture content. Keywords: germplasm, soybean, storage, longevity, moisture content.

scholarly journals Changes in nutritional and energy properties of soybean seed and hull after roasting 

2018 ◽  
Vol 64 (No. 2) ◽  
pp. 96-103
Author(s):  
Krička Tajana ◽  
Matin Ana ◽  
Voća Neven ◽  
Pospišil Ana ◽  
Grubor Mateja ◽  
...  
Keyword(s):  
Moisture Content ◽  
Soybean Seed ◽  
Soybean Seeds ◽  
Nutritional Properties ◽  
Seed Moisture Content ◽  
The Core ◽  
Seed Moisture ◽  
Before And After ◽  
Seed Hull ◽  
Energy Components

After harvesting, soybean seed must be thermally treated because of the increased moisture content. The most common thermal treatment of soybean is roasting, with three indicators that are critical for the process itself: seed moisture content, roasting period and process temperature. Following the above-mentioned, the aim of this paper was to determine nutritional and energy changes in three soybean varieties (‘Gordana’, ‘Sivka’ and ‘Slavonka’). After collecting the samples, the nutrient structure of the core and energy components of seed hull for each variety were determined before and after the heat treatment by roasting. The roasted soybean seeds of the specified varieties were dried by exposure to temperatures of 125°C and 135°C in the duration of 10, 20 and 30 minutes. The results show that significant changes occurred in nutritional properties of soybean seed core in relation to temperature and time of roasting, as well as to assortment. There are also significant differences in elements, which affects the energy properties of soy seed hulls depending on temperature and duration of the procedure. 

scholarly journals Crushing Susceptibility of Vetch Seeds Under Impact Loading

2017 ◽  
Vol 50 (4) ◽  
pp. 5-16
Author(s):  
F. Shahbazi
Keyword(s):  
Moisture Content ◽  
Impact Energy ◽  
Impact Loading ◽  
Impact Damage ◽  
Mechanical Damage ◽  
Seed Moisture Content ◽  
Mean Values ◽  
Seed Moisture ◽  
Mathematical Relationships ◽  
The Impact

AbstractMechanical damage of seeds due to harvest, handling and other process is an important factor that affects the quality and quaintly of seeds. The objective of this research was to determine the effects of moisture content and the impact energy on the breakage susceptibility of vetch seeds. The experiments were conducted at moisture contents of 7.57 to 25% (wet basis) and at the impact energies of 0.1, 0.2 and 0.3 J, using an impact damage assessment device. The results showed that impact energy, moisture content, and the interaction effects of these two variables significantly influenced the percentage breakage in vetch seeds (p<0.01). Increasing the impact energy from 0.1 to 0.3 J caused a significant increase in the mean values of seeds breakage from 41.69 to 78.67%. It was found that the relation between vetch seeds moisture content and seeds breakage was non-linear, and the extent of damaged seeds decreased significantlyas a polynomial (from 92.47 to 33.56%) with increasing moisture (from 7.57 to 17.5%) and reached a minimum at moisture level of about 17.5%. Further increase in seed moisture, however, caused an increase in the amount of seeds breakage. Mathematical relationships composed of seed moisture content and impact energy, were developed for accurately description the percentage breakage of vetch seeds under impact loading. It was found that the models have provided satisfactory results over the whole set of values for the dependent variable.

scholarly journals Adhesion of uredospores of Phakopsora pachyrhizi on soybean seeds and their viability during storage

2012 ◽  
Vol 34 (2) ◽  
pp. 225-230
Author(s):  
Elisandra Batista Zambenedetti Magnani ◽  
Elisabeth Aparecida Furtado de Mendonça ◽  
Maria Cristina de Figueiredo e Albuquerque
Keyword(s):  
Soybean Seed ◽  
Germination Percentage ◽  
Time Span ◽  
Soybean Seeds ◽  
Phakopsora Pachyrhizi ◽  
Mato Grosso ◽  
Soybean Production ◽  
Soybean Plants ◽  
Production Areas

To study adhesion and viability of uredospores of the fungus Phakopsora pachyrhizi on soybean seeds during storage, suspension tests of those uredospores were carried out by washing seeds at each 30 days interval. Furthermore, germination and inoculation tests of uredospores on soybean plants were performed with uredospores collected from seeds of two soybean production areas, located in the municipalities "Chapada dos Guimarães" and "Tangará da Serra", State of Mato Grosso, Brazil. High levels of uredospores infestation were detected before storage [249.31 and 85.18 uredospores/100 seeds (U/100)] on seeds collected in both localities, respectively. After 30 days storage, these figures were 46.12 and 122.5 U/100; at 60 days were 14.62 and 26.62 U/100; and at 90 days were only 2.87 and 3,68 U/100, respectively; dropping to zero after 120 days storage. The percentage of germinated uredospores decreased with increasing storage periods and at 120 days germination percentage was nil. When uredospores were inoculated on soybean plants, rust symptoms were only observed for uredospores collected from freshly harvested seeds. Uredospores associated to soybean seed germinate until 90 days after storage, but are not viable after this time span. Infection of plants only occurs with inoculation of uredospores obtained from freshly harvested seeds.

scholarly journals Mechanical Damage to Chickpea Seeds as Affected by Npk Fertilization

2014 ◽  
Vol 47 (3) ◽  
pp. 15-25
Author(s):  
F. Shahbazi ◽  
S. Falah ◽  
H.R. Eisvand
Keyword(s):  
Moisture Content ◽  
Impact Energy ◽  
Impact Damage ◽  
Mechanical Damage ◽  
Fertilization Rate ◽  
Phosphorus Fertilization ◽  
Seed Moisture Content ◽  
Seed Moisture ◽  
Nitrogen Fertilizer Rate ◽  
Phosphorus And Potassium

Abstract The aim of research was to determine the effect of nitrogen (N), phosphorus (P) and potassium (K) fertilizers onthe some physical properties and mechanical damage to chickpea seeds under impact. The martial for tests was from a field experiment with varied levels fertilization with nitrogen (0 and 50 kg/ha, N), phosphorus (0 and 100 kg/ha, P2O5) and potassium (0 and 100 kg/ha, K2O). The variation of the mechanical damage was analyzed depending on the mode of varied fertilization, seed moisture content and impact energy. It was found that the chickpea seeds were bigger with NPK supply. The effects of phosphorus and potassium fertilizers rates on the mechanical damage to chickpea seeds was significant at 1% probability level (P<0.01) and increased its hardness and resilience therefore caused the better resistance to impact damage. Potassium fertilization ratehad the most influence and phosphorus fertilization rate had the least. The effect of the nitrogen fertilizer rate was not significant (P>0.05). Harvesting chickpea seeds at higher moisture content and lower impact energy should give lower breakage when NPK is supplied, as well as when no NPK is supplied.

scholarly journals STORAGE OF TRUE POTATO SEED

HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 577c-577
Author(s):  
Noël Pallais
Keyword(s):  
Moisture Content ◽  
Seed Dormancy ◽  
Potato Seed ◽  
True Potato Seed ◽  
Seedling Vigor ◽  
High Moisture ◽  
Seed Moisture Content ◽  
Moisture Contents ◽  
Seed Moisture

True potato seed of Atzimba × 104.12LB (intermediate dormancy) was dried to seed moisture contents ranging from 3.85 to 12.5% (dry wt basis) and was stored for 2 years at 30, 15 and 5°C. Seed was tested for various germination and seedling vigor criteria at 4 month intervals. Seed dormancy and viability were better preserved at seed moisture levels below 7% and as temperature decreased. High moisture (>9%) was lethal to seed stored at 30°C. TPS should be stored at <5% seed moisture content. Under this condition seed dormancy in the genotype studied was lost after about 12 months at 30°C.

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