Doses, methods and times of application of boron in soybean under field conditions

Authors

  • Renan Cesar Dias da Silva Universidade Federal de Uberlândia
  • Geovani Soares da Silva Junior Cargill
  • Adilson Pelá Universidade Estadual de Goiás
  • Regina Maria Quintão Lana Universidade Federal de Uberlândia
  • José Geraldo Mageste da Silva Universidade Federal de Uberlândia

DOI:

https://doi.org/10.14393/BJ-v36n6a2020-48015

Keywords:

Glycine max., Micronutrient., Boric acid., Foliar fertilization.

Abstract

The boron (B) fertilization in soybean is important to ensure great yields. Boron correction must be applied in deficient soils repairing losses, exports and leaching. The objective of this study was to evaluate the effects of doses, methods and times of application of B in soybean B content and yield. The field experiments were conducted during the 2015/16 and 2016/17 cropping seasons and set as a randomized block design with nine treatments (0, 0.5, 1, 1.5, 2 kg ha-1 of B, 0.5 kg ha-1 of B mixed with NPK (02-28-18) in furrow during sowing, foliar application with 0.3 kg ha-1 of B in V4 soybean stage, foliar application with 0.3 kg ha-1 of B in R1 soybean stage, and foliar application of 0.15 kg ha-1 in V4 plus 0.15 kg ha-1 of B in R1 soybean stage) and four replications. Boric acid was the B source and the variables analyzed were: B leaf content, B exported in seeds, number of pods per plant, number of seeds per pod, weight of 100 seeds (g) and productivity (kg ha-1). The levels of B in leaf were between 30.1 and 43.8 mg kg-1 and between 65.0 and 92.6 mg kg-1 in the 2015/16 and 2016/17 growing season, respectively. Exports of B in seeds were estimated between 166 and 248 g ha-1 and between 208.9 to 260.8 g ha-1 in the 2015/16 and 2016/17 growing season, respectively. Great productivity (3,820 kg ha-1) was observed in the 2016/17 growing season, with an estimated dose of 0.95 kg ha-1 of B.

Downloads

Download data is not yet available.

Downloads

Published

2020-12-16

How to Cite

SILVA, R.C.D. da ., SILVA JUNIOR, G.S. da ., PELÁ, A., LANA, R.M.Q. and SILVA, J.G.M. da ., 2020. Doses, methods and times of application of boron in soybean under field conditions. Bioscience Journal [online], vol. 36, no. 6, pp. 1999–2006. [Accessed7 December 2022]. DOI 10.14393/BJ-v36n6a2020-48015. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/48015.

Issue

Section

Agricultural Sciences