Chemical management of weeds in corn hybrids

被引：15

作者：

Galon, Leandro ^{[1
]}

De David, Felipe A. ^{[2
]}

Forte, Cesar T. ^{[2
]}

Junior, Francisco W. R. ^{[2
]}

Radunz, Andre L. ^{[1
]}

Kujawinski, Renato ^{[1
]}

Radunz, Lauri L. ^{[1
]}

Castoldi, Camile T. ^{[2
]}

Perin, Gismael F. ^{[1
]}

Mossi, Altemir J. ^{[1
]}

机构：

[1] Fed Univ Fronteira Sul, Erechim, Brazil

[2] Fed Univ Fronteira Sul, Dept Environm Sci & Technol, Campus Erechim,Ave Irmas Consolata 459, BR-99700000 Erechim, Brazil

来源：

WEED BIOLOGY AND MANAGEMENT | 2018年 / 18卷 / 01期

关键词：

Euphorbia heterophylla; Ipomoea indivisa; Urochloa plantaginea; Zea mays; BRACHIARIA BRIZANTHA; SELECTIVITY; HERBICIDES; INTERFERENCE; NICOSULFURON; SYSTEM; WHEAT; GRASS;

D O I：

10.1111/wbm.12141

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Corn stands out among the cultivars because of its high importance in food, animal feed and raw materials for energy production. The quantity and quality of the harvested grain can be reduced, mainly due to inadequate weed management. Nowadays, weed control is accomplished with the use of herbicides as pre-emergence and postemergence, applied alone or in a tank mix. This study aimed to evaluate the efficiency of the control of weeds and phytotoxicity of the herbicides that were applied in tank mix or isolated in the corn hybrids, Formula TL (R) and SYN 7B28. Two experiments were conducted: in the 2012/2013 season (Formula TL (R)) and 2013/2014 season (SYN 7B28). There was a low initial phytotoxicity of all the tested herbicides in the initial evaluation; however, from 14days after treatment, it was minimal. The weed control of Ipomoea indivisa, Urochloa plantaginea and Euphorbia heterophylla in both experiments was better, in general, when using the tank mixtures of atrazine+ simazine +tembotrione and atrazine+simazine+mesotrione, respectively. The application of atrazine+simazine+tembotrione in the SYN 7B28 hybrids provided, with the exception of the thousand-grain weight, the best expression of grain yield components, combining a low phytotoxicity and best control of the weeds. The Formula TL (R) hybrid presented the highest mass of a thousand grains and yield with the application of nicosulfuron+tembotrione. The yield average difference of the herbicide treatments and the unweeded control showed an increase of 27.66 and 34.59% in the grain yield of the corn hybrids, Formula TL (R) and SYN 7B28, respectively.

引用

页码：26 / 40

页数：15

共 40 条

[1] Weed management in off-season corn cropped alone or intercropped with Congo signal grass [J].