HERBICIDE SELECTIVITY IN PREEMERGENCE OF SWEET SORGHUM CULTIVATED IN DIFFERENT SOIL TEXTURE

Authors

  • MARIUCÉLIO SANTOS LIMA Universidade Estadual de Maringá
  • CAIO QUERNE DE CARVALHO Universidade Estadual de Maringá
  • LUCAS MATHEUS PADOVESE Universidade Estadual de Maringá
  • LUIZ AUGUSTO INOJOSA FERREIRA Universidade Estadual de Maringá
  • RUBÉM SILVÉRIO DE OLIVERIA JUNIOR Universidade Estadual de Maringá
  • DENIS FERNANDO BIFFE Universidade Estadual de Maringá

DOI:

https://doi.org/10.18512/rbms2020v19e1128

Keywords:

biomass, chemical control, ethanol, Sorghum bicolor.

Abstract

Sweet sorghum (Sorghum bicolor (L.) Moench) is an interesting alternative
for biomass and ethanol production, however, so far there is very limited knowledge regarding selective herbicide options for weed control in this crop. The objective of this study was to evaluate the selectivity of preemergence herbicides for sweet sorghum. This research was composed by two steps: in the first one, a greenhouse screening was carried out with several herbicide treatments and in the following step the most selective treatments were evaluated on field conditions. In sandy clay loam texture soil, the treatments involving atrazine (1000 and 2000 g ha-1), amicarbazone (210 g ha-1), trifluralin (500 g ha-1) and flumioxazin (25 g ha-1) provided the greatest levels of selectivity to sweet sorghum. In clay soil (64.7% clay), the treatments with atrazine (1000, 1500 and 2000 g ha-1), amicarbazone (280 g ha-1), S-metolachlor (480 g ha-1), [atrazine + S-metolachlor] ([601+471,2 g ha-1), pendimethalin (500 g ha-1) and imazethapyr (42.4 and 63.6 g ha-1) provided the lowest levels of crop injury, and were considered as the most selective for sweet sorghum. Herbicide treatments applied to sandy clay loam soil provided more injuries to sweet sorghum than those applied to clay soil.

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Published

2020-11-13

How to Cite

SANTOS LIMA, M., QUERNE DE CARVALHO, C., PADOVESE, L. M., INOJOSA FERREIRA, L. A., OLIVERIA JUNIOR, R. S. D., & BIFFE, D. F. (2020). HERBICIDE SELECTIVITY IN PREEMERGENCE OF SWEET SORGHUM CULTIVATED IN DIFFERENT SOIL TEXTURE. REVISTA BRASILEIRA DE MILHO E SORGO, 19, 16. https://doi.org/10.18512/rbms2020v19e1128

Issue

Vol. 19 (2020)

Section

Scientific Paper

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