Physiological quality of mechanically harvested chickpea seeds

• Autor(a) principal: Xavier Dias, Letícia Betânia
• Data de Publicação: 2021
• Outros Autores: Afonso de Melo Queiroz, Pedro, Cardoso de Castro, Thaís, Antonio Moreira de Freitas, Marco, Fernandes Leão-Araújo, Érica, Marcos Nascimento, Warley
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Engenharia na Agricultura
• Texto Completo: https://periodicos.ufv.br/reveng/article/view/10907
• topic: Cicer arietinum L.; Mechanical damage; Leached Exudates; Tetrazolium; Vigor; Mechanical damage. Leachate, Tetrazolium, Vigor

The objective of this study was to evaluate two harvester displacement speeds (2.5 and 3.5 km h-1) and three adjustments for track rotor rotations (500, 700 and 850 rpm), in the occurrence of mechanical damage to grain. Chickpeas. Harvesting was carried out in a commercial production area. Seeds were evaluated for purity, germination, first count, germination speed index, hypochlorite test, electrical conductivity test and tetrazolium test. There was an effect of machine displacement speed on seed physiological quality (PC, G and IVG), especially at high rotor speed. In these cases, the speed of 2.5 km h-1 resulted in lower values. This speed also revealed worse results at 850 rpm for purity and hypochlorite. Tetrazolium was not efficient to identify differences in seed quality. There was no significant interaction for the conductivity test. The evaluation of the isolated effect of the displacement speed identified that at 3.5 km h-1 there are problems in seed vigor due to the greater exudate release. Low harvester travel speeds (2.5 km h-1) associated with high rotor speed of the track (700 and 850 rpm) cause reduction of the physical and physiological seed quality.