Agronomic response of maize to limited levels of water under furrow irrigation in southern Spain

被引:17
作者
Aguilar, M. [1 ]
Borjas, F. [1 ]
Espinosa, M. [1 ]
机构
[1] CIFA Las Torres Tomejil, IFAPA, Consejeria Agr & Pesca La Junta Andalucia, Seville 41200, Spain
关键词
crop yield; FAO cycles; productivity of applied water;
D O I
10.5424/sjar/2007054-280
中图分类号
S [农业科学];
学科分类号
09 ;
摘要
The yield response to limited irrigation is a major concern where water resources are limited. The objective of the work was to know the agronomic response of 12 maize hybrids cultivars under full and limited irrigation levels. Full irrigation consisted in 5 to 7 furrow irrigations events (90 mm) applying a total depth of 450-630 mm. In the limited irrigation treatment, three irrigations (90 mm) were applied, beginning 2-3 weeks before silking and ending 3-5 weeks after it. Results indicated a mean yield loss of 17% due to limited irrigation. The main effect of limited irrigation was a reduction of the ears per plant and 1,000 kernel weight. Maize yield decreased as season length was reduced. The main effect of season length reduction was a reduction of kernels per ear. Limited or regulated deficit irrigation is one way of maximizing productivity of total applied water (PAW); thus, the limited irrigation treatment reached a higher PAW value (2.66 kg m(-3)) than full irrigation (1.90 kg m(-3)). In both irrigation levels, PAW was higher as the growth cycle increased. It can be concluded that, in the conditions of Southern Spain, reduced irrigation provided larger yields when applied to long cycle cultivars (FAO 700-800), with increased PAW values.
引用
收藏
页码:587 / 592
页数:6
相关论文
共 30 条
[1]  
AGUILAR M, 1996, CEREAL RES COM, V4, P499
[2]   Kernel number determination in maize [J].
Andrade, FH ;
Vega, C ;
Uhart, S ;
Cirilo, A ;
Cantarero, M ;
Valentinuz, O .
CROP SCIENCE, 1999, 39 (02) :453-459
[3]   Kernel number prediction in maize under nitrogen or water stress [J].
Andrade, FH ;
Echarte, L ;
Rizzalli, R ;
Della Maggiora, A ;
Casanovas, M .
CROP SCIENCE, 2002, 42 (04) :1173-1179
[4]   Physiological mechanisms contributing to the increased N stress tolerance of tropical maize selected for drought tolerance [J].
Bänziger, M ;
Edmeades, GO ;
Lafitte, HR .
FIELD CROPS RESEARCH, 2002, 75 (2-3) :223-233
[5]  
DOGAN E, 2003, ASAE ANN M LAS VEG N
[6]  
Doorenbos J, 1979, 33 FAO
[7]  
English MJ., 1990, Management of Farm Irrigation Systems, P631
[8]  
FAO, 1988, WORLD AGR 2000 FAO S
[9]  
Food and Agriculture Organization of the United Nations (FAO), 2002, 22 FAO
[10]  
GARDNER WR, 1983, LIMITATIONS EFFICIEN