Tolerance of Corn Hybrids to Isoxaflutole

被引：3

作者：

Cavalieri, S. D. ^{[1
]}

Oliveira Jr, R. S. ^{[2
]}

Constantin, J. ^{[2
]}

Biffe, D. F. ^{[3
]}

Dvoranen, E. C. ^{[4
]}

Blainski, E. ^{[4
]}

机构：

[1] Univ Estadual Paulista, FCA UNESP, Fac Ciencias Agron, BR-18603907 Botucatu, SP, Brazil

[2] Univ Estadual Maringa, Dep Agron, Nucl Estudos Avancados Ciencia Plantas Daninhas N, Maringa, Parana, Brazil

[3] Area Protecao Plantas NAPD UEM, Programa Posgrad Agron, Maringa, Parana, Brazil

[4] NAPD UEM, Maringa, Parana, Brazil

来源：

PLANTA DANINHA | 2008年 / 26卷 / 04期

关键词：

pigment inhibitors; isoxazoles; selectivity; Zea mays;

D O I：

10.1590/S0100-83582008000400022

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

This research aimed to evaluate the tolerance of corn hybrids to isoxaflutole and to correlate greenhouse selectivity studies to field Studies for this herbicide. Under greenhouse conditions, experiments were arranged in a randomized block design, in a 23 x 3 factorial scheme. with the first factor being corn hybrids and the second factor herbicide rates (0, 60 and 120 g ha(-1)). Treatment effect was evaluated based on shoot biomass. Underfield conditions, a randomized block design experiment was carried out, in a factorial scheme 5 x 3 (five corn hybrids. selected from the greenhouse studies. and three herbicide rates (0, 60 and 120 g ha(-1)). Field results were evaluated based on crop development and yield. Based on the greenhouse experiments, corn hybrids were grouped according to tolerance to isoxaflutole . No significant correlation was found between hybrids and corn rates in relation to grain yield in the field. Otherwise, average grain yield across all hybrids Was decreased by isoxaflutole at 120 g ha-1. It was concluded that greenhouse experiments are not sufficient when evaluating selectivity of isoxaflutole to corn hybrids and that field trials should be taken into account to evaluate the effects on crop yield.

引用

页码：901 / 909

页数：9