Abstract
Considered one of the oldest leguminous used by humanity, soybeans (Glycine max (L.) Merrill) originate in China and have numerous applications in animal and human food, due to their high protein and oil content, satisfactory. The soy complex moves the economy of several countries with employment and income generation. The variation of environmental factors, such as temperature, photoperiod and humidity, influence the growth and consequently the grain production of the crop, so the study of phenology addressing the relationships between climatic factors, seasonal changes and the development cycle is of sum nutrients at the right dose and phase, for proper nutrition and high crop yields.
Highlights
Author for correspondence: neto.soliver@gmail.com Abstract: Considered one of the oldest leguminous used by humanity, soybean (Glycine max (L.) Merrill) originate in China and have numerous applications in animal and human food, due to their high protein and oil content, satisfactory
Contextualization and analysis Soybean (Glycine max (L.) Merrill) is Brazil's main agricultural commodity and one of the oldest leguminous used by humanity
Its center of origin is in China and currently occupies a prominent place in the world food industry, with a supply of oil for human consumption and soybean meal rich in protein used in animal feed
Summary
The variation of environmental factors such as temperature, photoperiod, and humidity, influence the growth and the grain yield in soybean crop. When cultivated in low latitude areas, where the photoperiod is relatively short, or with delayed sowing, there is early flowering and formation of low plants, with reduction of leaf area and lower grain yield (Farias, 2011). Given this fact, plants with long juvenile period were introduced by soybean breeding programs, less sensitive to photoperiod, expanding the adaptation sites and allowing greater stability of. Considering the current scenario, where most areas do not have irrigation, the risks in the production process are high, because during the harvest and off-season periods the prolonged periods of drought have been increasingly frequent (Gonçalves, 2017)
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