Aplicação exógena de melatonina associada a enxofre e seus efeitos no metabolismo na produção da soja

Abstract

The use of melatonin, whose concentration in plants varies in different tissues and according to the development stage, can promote increased productivity in soybean. The present work aims to evaluate the soil application of melatonin in the presence of sulfur and its effects on photosynthesis, transpiration, and soybean yield. A 2x2 factorial with four repetitions was used: the first factor is melatonin (presence and absence of Si), the second factor is the application of S (presence and absence), with four repetitions. A plant in pots with 12 dm3 was conducted. Total chlorophyll content, gas exchange, and crop yield were evaluated. The research concluded that the presence of S and melatonin increased the levels of total chlorophyll, photosynthesis, transpiration, and soybean yield.