Defoliation in soybeans grown in the Legal Amazon region
Importance, environmental impacts and effect on agronomic characteristics
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Brazil is recognised as one of the world's largest agricultural powers. The expansion of soybean cultivation in the Legal Amazon region directly affects the region's biodiversity, mainly through deforestation and the indiscriminate use of pesticides to combat various types of insect pests. The soybean plant has the ability to prevent loss of productivity after it has been damaged. Due to the genetic diversity of soybeans and the environmental impacts caused by their cultivation, this study was proposed with the aim of contributing new information on the effect of leaf removal on the reproducti...
Brazil is recognised as one of the world's largest agricultural powers. The expansion of soybean cultivation in the Legal Amazon region directly affects the region's biodiversity, mainly through deforestation and the indiscriminate use of pesticides to combat various types of insect pests. The soybean plant has the ability to prevent loss of productivity after it has been damaged. Due to the genetic diversity of soybeans and the environmental impacts caused by their cultivation, this study was proposed with the aim of contributing new information on the effect of leaf removal on the reproductive stage of soybean cultivation. The work was divided into two chapters: the first chapter discusses the economic importance of the crop, as well as the environmental impacts caused by the use of pesticides, in addition to contextualising the effect of leaf removal on the crop. The second chapter presents the effect of defoliation on the agronomic characteristics of eight soybean cultivars grown at low latitudes and subjected to different levels of defoliation at stages R2 and R4 of soybean grains in two trials at the Gurupi University Campus in the 2013/2014 harvest year.
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