Portal de Periódicos da CAPES

Artigo Acesso aberto Produção Nacional Revisado por pares

BIBTEX RIS

Boron fertilisation at different phenological stages of soybean

2017; Southern Cross Publishing; Volume: 11; Issue: 08 Linguagem: Inglês

10.21475/ajcs.17.11.08.pne558

1835-2693

Ivana da Silva Gomes, Cleiton Gredson Sabin Benett, Rogério Lámim Silva, Ricardo Caldas Xavier, Katiane Santiago Silva Benett, A. R. Da Silva, Ademilson Coneglian,

Agricultural Science and Fertilization

The high global food demand has led to crop management practices such as the use of micronutrients to increase soybean productivity.The aim of the present study was to evaluate the effect of boron fertilisation applied to two varieties of soybeans at different doses and different phenological stages on yield components, productivity and physiological quality of seeds.Two different soybean varieties were tested, one conventional (variety BRS 7980) and one transgenic (variety M 7739 IPRO), in two field experiments performed in parallel during the 2014/2015.A randomised block experimental design was used in both experiments, with a 3 x 5 factorial scheme, with four replicates per treatment.The tested factors were three phenological stages (V6, V9 and R1) and five boron doses (0, 1, 2, 3 and 4 B kg ha -1 ).The following parameters were analysed: leaf boron concentration, chlorophyll concentration, yield components and productivity.Boron fertilisation at different phenological stages had no effect on most agronomic traits, but it did increase productivity in both varieties, independent of the phenological stage of application.The boron dose indicated for maximum production for both varieties is 3.51 kg B ha -1 .