Phytosanitary risks and agronomic performance of soybeans associated with spatial arrangements of plants

Authors

  • Eduardo Lima do Carmo Universidade de Rio Verde
  • Alessandro Guerra da Silva Universidade de Rio Verde
  • Guilherme Braga Pereira Braz Universidade de Rio Verde
  • Sergio de Oliveira Procópio Embrapa Tabuleiros Costeiros
  • Gustavo André Simon Universidade de Rio Verde
  • Antonio Germano Carpim Rocha Universidade de Rio Verde.
  • Luiz Carlos Barcellos Universidade Federal de Goiás

DOI:

https://doi.org/10.14393/BJ-v35n3a2019-41957

Keywords:

Application technology., Glycine max., Phenotypic plasticity., Sowing systems., Yield components

Abstract

Soybeans sowing in different plants’ spatial distribution can influence the phytosanitary management of this crop and, consequently, impact on grains yield. This study was carried out to evaluate the effect of plants arrangements on infestation and control of caterpillars, the deposition of spray syrup as well as assess the agronomic performance of soybean cultivated in the Brazilian Cerrado. The assay was performed during two consecutive seasons in a randomized complete block design with four replications. Soybean cultivation was implemented in 0.50 m spacing between rows, crossed (0.50 m x 0.50 m), twin rows (0.25 m / 0.75 m), and narrow (0.25 m). In the reproductive stage of plants, both crossed and narrow arrangements showed higher caterpillars’ incidence. There was a more evident risk of caterpillar incidence in arrangements that promoted better equidistance among plants. This risk was mitigated when taking into account both control and overlap of syrup, which could be incremented into inferior canopy with the enhancement of application rate. The increase in application rate from 75 to 150 L ha-1 promoted superior spray deposition volumes. Increases in grain yield was noted in the narrow arrangement.

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Published

2019-06-11

How to Cite

CARMO, E.L. do, SILVA, A.G. da, BRAZ, G.B.P., PROCÓPIO, S. de O., SIMON, G.A., ROCHA, A.G.C. and BARCELLOS, L.C., 2019. Phytosanitary risks and agronomic performance of soybeans associated with spatial arrangements of plants. Bioscience Journal [online], vol. 35, no. 3, pp. 806–817. [Accessed26 November 2022]. DOI 10.14393/BJ-v35n3a2019-41957. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/41957.

Issue

Section

Agricultural Sciences