Spatial variability of grain yield of irrigated corn and its correlation with explanatory plant variables

被引：18

作者：

Vian, Andre Luis ^{[1
]}

Santi, Antonio Luis ^{[2
]}

Carneiro Amado, Telmo Jorge ^{[3
]}

Cherubin, Mauricio Roberto ^{[4
]}

Simon, Diego Henrique ^{[2
]}

Damian, Junior Melo ^{[2
]}

Bredemeier, Christian ^{[1
]}

机构：

[1] Univ Fed Rio Grande do Sul, Dept Plantas Lavoura, Fac Agron, BR-91501970 Porto Alegre, RS, Brazil

[2] Univ Fed Santa Maria, Ctr Educ Super Norte Rio Grande Sul CESNORS, Dept Ciencias Agron & Ambientais, Frederico Westphalen, RS, Brazil

[3] Univ Fed Santa Maria, CCR, Dept Solos, BR-97119900 Santa Maria, RS, Brazil

[4] Univ Sao Paulo, Escola Super Agr Luiz de Queiroz, Piracicaba, SP, Brazil

来源：

CIENCIA RURAL | 2016年 / 46卷 / 03期

关键词：

precision agriculture; yield components; irrigation; plant population;

D O I：

10.1590/0103-8478cr20150539

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Due to yield instability of main crops associated to drought, the use of technologies such irrigation and precision agriculture (PA) have been recently adopted in large scale. This study had the objective to assess the spatial variability of corn yield and its correlation with explanatory plant variables in an irrigated field. The study was carried out during the growing seasons 2010/2011 and 2011/2012, in an area of 35ha managed under notill and center-pivot irrigation. Corn yield and yield components were evaluated following a sampling grid of 100x100m. Grain yield and most yield components showed low dispersion data, resulting in data normality. Even under irrigation, corn yield showed high spatial variability. In path analysis, it was found high determination coefficients of corn yield with yield components.

引用

页码：464 / 471

页数：8

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