Production and yield response factor of sunflower under different irrigation depths

被引：4
|
作者：
de Azevedo, Benito M. [1 ]
Vasconcelos, Denise V. [1 ]
do Bomfim, Guilherme V. [1 ]
Viana, Thales V. de A. [1 ]
do Nascimento Neto, Joaquim R. [1 ]
de Oliveira, Karcia M. A. S. [2 ]
机构：
[1] Univ Fed Ceara, Ctr Ciencias Agr, Dept Engn Agr, Fortaleza, CE, Brazil
[2] Univ Estadual Ceara, Ctr Estudos Sociais Aplicados, Fortaleza, CE, Brazil
来源：
REVISTA BRASILEIRA DE ENGENHARIA AGRICOLA E AMBIENTAL | 2016年 / 20卷 / 05期
关键词：
Helianthus annuus; water requirement; drip irrigation; PLANTS; BIOMASS; GROWTH; DRIP; OIL;
D O I：
10.1590/1807-1929/agriambi.v20n5p427-433
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
Local information about irrigation depths for sunflower can be used in the design of projects and irrigation management to increase crop yield and to reduce costs. This study aimed to evaluate the effects of irrigation depths on sunflower and calculate its yield response factor. The experiment was conducted in Fortaleza-CE, Brazil, in a randomized block design, with six treatments, four replicates and ten evaluated plants per plot. The treatments were applied in the phenological stages II, III and IV with irrigation depths equivalent to 25, 50, 75, 100, 125 and 150% of crop evapotranspiration. The yield response factor was calculated according to FAO Bulletin no 33. The water supply, equivalent to 79.7 and 91.1% of crop evapotranspiration, increased capitulum mass (43.8 g) and commercial yield of seeds (3,360.2 kg ha(-1)). Additionally, the yield response factor indicated that sunflower is tolerant to daily irrigation under controlled water deficit.
引用
收藏
页码：427 / 433
页数：7
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