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

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.

Bibliographic Details

Main Authors:	CARMO, E. L. do, SILVA, A. G., BRAZ, G. B. P., PROCOPIO, S. de O., SIMON, G. A., ROCHA, A. G. C., BARCELLOS, L. C.
Other 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 PROCOPIO, CNPMA; GUSTAVO ANDRÉ SIMON, Universidade de Rio Verde; ANTONIO GERMANO CARPIM ROCHA, Universidade de Rio Verde; LUIZ CARLOS BARCELLOS, UFG.
Format:	Artigo de periódico biblioteca
Language:	English eng
Published:	2019-11-29
Subjects:	Sowing systems, Co., Soja, Glycine max, Espaçamento, Pulverização., Soybeans, Sowing, Application technology, Foliar spraying, Phenotypic plasticity, Yield components,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/1115524 https://doi.org/10.14393/BJ-v35n3a2019-41957
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