Chemical desiccants for anticipation of harvest and quality improvement of chickpea seeds

Abstract

Desiccating herbicides can promote uniformity of maturation, and early harvest and provide improvements in the physical, physiological, and sanitary seeds quality. The objective of this work was to evaluate the use of herbicides in early harvest and in the physiological quality of chickpea seeds. The experimental design was of randomized blocks with four replications, considering a complete factorial design with one control (no application) + two factors (four herbicides x three different doses): glufosinate-ammonium (200, 400 and 500 g a.i./ha); diquat (200, 400 and 500 g a.i./ha); carfentrazoneethyl (15, 30 and 37.5 g a.i./ha) and saflufenacil (49, 98 and 122.5 g a.i./ha). Saflufenacil (49 g a.i./ha) showed the lowest harvest anticipation (4 days) and a low percentage of vigor (50.25%). Glufosinate (400 g a.i./ha), was the most promising as it increased germination to 83.75% and vigor to 78.25%, in addition to promoting the anticipation of harvest by up to 17 days, while the normal cycle of the crop, observed in the control, was 154 days.

Chemical Desiccation in the Preharvest of Cowpea: A Study of How the Time of Application Interferes in the Enzymatic and Physiological Aspects of Seedlings from Desiccated Plants

“…Known studies have investigated seed yield, color, physiological quality, legume germination variables, and application of desiccants. , Chamma et al found that the application of desiccants for the forced maturation of soybeans influenced the acquisition of vigor and longevity of the seeds. For chickpeas, Almeida et al observed that using glufosinate (400 g i.a/ha) anticipated harvest by 17 days and increased germination and vigor in chickpea seeds. Although cowpea is widely cultivated in the Brazilian agricultural scenario, the use of herbicides in the preharvest is widespread, and there are still no studies that portray physiological and biochemical parameters that confer quality to seeds obtained from plants desiccated with herbicides.…”