Trinexapac-Ethyl and Nitrogen Fertilization Rates in Wheat Crop

被引：10
|
作者：
Pagliosa, E. E. [1 ]
Benin, G. [2 ]
Biezus, E. [1 ]
Beche, E. [1 ]
Silva, C. L. [1 ]
Marchese, J. A. [2 ]
Martin, T. N. [3 ]
机构：
[1] Univ Tecnol Fed Parana UTFPR, Mestrando Programa Posgrad Agron, Pato Branco, PR USA
[2] UTFPR, Curso Agron, BR-85503390 Pato Branco, PR, Brazil
[3] Univ Fed Santa Maria, Santa Maria, RS, Brazil
来源：
PLANTA DANINHA | 2013年 / 31卷 / 03期
关键词：
Triticum aestivum; grain yield; growth regulator; nitrogen; GROWTH REDUCER;
D O I：
10.1590/S0100-83582013000300014
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
The objective of this work was to evaluate the effect of trinexapac-ethyl and nitrogen doses on the agronomic performance and grain yield of three wheat cultivars. The experiment was arranged in a randomized block design in a factorial scheme, with three replications. The treatments were two nitrogen fertilization doses (60 and 20 kg ha(-1)), three wheat cultivars (BRS 208, BRS 220, and BRS Guamirim), four trinexapac-ethyl doses (0, 70, 140, and 210 g a.i. ha(-1)) and two harvest years (2008 and 2009). In the Pato Branco microregion, the nitrogen rate of 60 kg ha(-1) was sufficient to maximize the yield potential of the evaluated cultivars. Regardless of the height of the cultivar plants, trinexapac-ethyl showed no positive effect on grain yield, with negative effect under water-deficit stress.
引用
收藏
页码：623 / 630
页数：8
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