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Weed Management in Rice under Sprinkler and Flood Irrigation Systems

By D.B. HELGUEIRA (6042767), T. D’AVILA ROSA (6042770), L. GALON (5530094), D.S. MOURA (6042773), A.T. MARTINI (6042776) and J.J.O. PINTO (5717270)

Abstract

<div><p>ABSTRACT: This study aimed to assess the efficiency and selectivity of herbicides in rice submitted to sprinkler and flood irrigation systems. The experimental design was a randomized block design arranged in a 2 × 9 factorial scheme. Factor A consisted of irrigation systems (sprinkler and flood) and Factor B consisted of herbicide treatments (T1 - control; T2 - imazethapyr + imazapic, 75 + 25 g a.i. ha-1; T3 - imazethapyr + imazapic, 150 + 50 g a.i. ha-1; T4 - imazapic + imazapyr, 73.5 + 24.5 g a.i. ha-1; T5 - imazapic + imazapyr, 147 + 49 g a.i. ha-1; T6 - imazethapyr, 106 g a.i. ha-1; T7 - imazethapyr, 212 g a.i. ha-1; T8 - sequential application of imazethapyr + imazapic, 75 + 25 g a.i. ha-1; and T9 - sequential application of imazapic + imazapyr, 73.5 + 24.5 g a.i. ha-1). The application of imazethapyr and formulated mixtures of imazethapyr + imazapic and imazapyr + imazapic provided a control higher than 97% in flood and sprinkler irrigation systems. Herbicide selectivity is not altered in the sprinkler irrigation system when compared to the flood irrigation system.</p></div

Topics: Plant Biology, Clearfield system, Oryza sativa, persistence
Year: 2018
DOI identifier: 10.6084/m9.figshare.7418630.v1
OAI identifier: oai:figshare.com:article/7418630
Provided by: FigShare
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