Physical and physiological quality of soybean seeds at three speeds of the harvester

Paixão, Carla Segatto Strini; Chrispin, Camila P.; Silva, Rouverson Pereira da; Gírio, Lucas A. S.; Voltarelli, Murilo Aparecido

doi:10.1590/1807-1929/agriambi.v21n3p214-218

Cited by 8 publications

(6 citation statements)

References 10 publications

(9 reference statements)

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“…However, according to Barbosa et al (2012) and Paixão et al (2017), the water content of the seeds directly influences the integrity of the membranes, as assessed by the electrical conductivity test, and can influence other analyses of physiological quality.…”

Section: Resultsmentioning

confidence: 99%

“…During this process, the stored glucose is used as an energy source, consuming oxygen, and producing CO 2 with subsequent release of water and energy (Silva et al, 2017). The released CO 2 comes from the complete oxidation of carbohydrates and lipids, which are consumed during the degradation of these reserves in the germination process (Marcos Filho, 2015;Wendt et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

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Equipment to assess vigor in soybean seeds using CO2 produced during respiration

Silva

Gadotti

Moraes

et al. 2021

Rev. bras. eng. agríc. ambient.

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The adoption of quick and reliable laboratory techniques and equipment to choose the best seed lots for marketing will influence the production of soybeans with superior physiological quality, among other areas in the sector. Therefore, the objective of this study was to evaluate the CO2 concentrations produced by water-soaked soybean seeds and to verify the effectiveness of new equipment to help choose lots with different vigor levels. To evaluate the physical and physiological quality of the seeds, eight soybean lots were evaluated with the following tests: water content, weight of thousand seeds, first germination count, germination, electrical conductivity, emergence, and respiration evaluated by the Pettenkoffer apparatus and with equipment designed to measure CO2 in seeds. The results were subjected to analysis of variance with means compared by Tukey’s test at p ≤ 0.05. Conventional methods showed significant differences in vigor and viability in soybean seeds. The equipment designed was efficient in detecting CO2 produced by seeds soaked in water for 8 hours. The CO2 readings with the equipment presented satisfactory results to predict the vigor in soybean seeds through respiration.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Equipment to assess vigor in soybean seeds using CO2 produced during respiration

Silva

Gadotti

Moraes

et al. 2021

Rev. bras. eng. agríc. ambient.

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“…Although they do not differ statistically, lower seed vigor rates were observed in the GSI test, and a higher incidence of mechanical damage was demonstrated in the SH test. According to Paixão et al (2017), high rotor rotations were chosen at higher harvester speeds because, with the increase in speed, more material is harvested, and, therefore, it was necessary to increase the rotation of the cylinders. Thus, the speed of 3.5 km.h -1 , when associated with higher rotor rotation speeds (850 rpm), can offer more satisfactory results.…”

Section: Resultsmentioning

confidence: 99%

Physiological quality of mechanically harvested chickpea seeds

Dias

Queiroz

Castro

et al. 2021

Reveng

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Our objective was to evaluate the occurrence of mechanical damage in chickpea seeds with the combination of two harvester speeds (2.5 and 3.5 km.h-1) and three adjustments for rotor rotation speeds (500, 700, and 850 rpm). Harvesting was carried out in a seed production field. Seeds were evaluated for purity, germination (G), first count (FC), germination speed index (GSI), hypochlorite, electrical conductivity, and tetrazolium tests. There was an effect of harvester speeds on seed physiological quality for the first count (FC), germination (G), germination speed index (GSI), especially when combining with high rotor rotation speed. In these cases, the speed of 2.5 km.h-1 resulted in lower values. This harvester speed also had worse results when combining with 850 rpm for purity and hypochlorite tests. The tetrazolium test was not efficient in identifying differences in seed quality. There was no significant interaction between harvester speeds and rotor rotation speeds for the conductivity test. Evaluating the harvester speed’s isolated effect (3.5 km.h-1), we identified problems in seed vigor due to the higher value of exudates in the electrical conductivity test. Low harvester speed (2.5 km.h-1) associated with high rotor rotation speeds (700 and 850 rpm) causes a reduction of the physical and physiological quality of seeds.

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“…In addition, the selling price of farmers probably will reduce the costs to dry the pods using a forced dryer due to the price that the farmer gets for his peanuts depends on their size, quality and moisture content (Bell et al, 2018;Cui et al, 2018;Hassan et al 2018). In this regard, analyzing the moisture content of soybean pods and the performance of the operation, Paixão et. al (2017b) found that when the grains were drier, many of the sample points were concentrated around the average, which is reflected in the lower variability in seed data and higher quality of the harvesting process.…”

Section: Quality Of Harvested Materialsmentioning

confidence: 99%

Does Moisture in Pods Interfere With Mechanized Harvesting of Peanuts?

et al. 2021

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Although peanut harvesting results in significant losses, it has rarely been investigated. Thus, this study aimed to analyze the interference of different pod moisture contents on peanut harvesting and their influence on the process quality based on losses and impurities. An experiment was performed in a peanut seed producing area, in Luzitânia, district of Jaboticabal-SP, using average moisture contents of 15% and 20% in the pods; 16 and 14 data points were collected for the 20% and 15% treatments, respectively. The experimental design used statistical process control (SPC) to analyze the collected variables. The results indicated higher losses in the platform than in the machine. In addition, the harvest quality was not affected by the pod moisture content. However, the correct adjustment of machines can restrict total losses to approximately 1% of the yield. Pods with moisture contents of 15% and 20% can be used for peanut harvesting. However, although a pod moisture content of 15% reduced the amount of mineral and vegetal impurities inside the bulk tank, the number of open pods increased, whereas a pod moisture content of 20% provided a greater number of whole pods.

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Physical and physiological quality of soybean seeds at three speeds of the harvester

Cited by 8 publications

References 10 publications

Equipment to assess vigor in soybean seeds using CO2 produced during respiration

Equipment to assess vigor in soybean seeds using CO2 produced during respiration

Physiological quality of mechanically harvested chickpea seeds

Does Moisture in Pods Interfere With Mechanized Harvesting of Peanuts?

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