The Effect of the irrigation canceling during growth on yield of late sown Giza 76 cotton variety.
Abstract: his work was established at Mataana Agricultural Research Station, Upper Egypt, during 1990 / 91 and 1991 / 92 seasons to study the relationships between durations of irrigation cycles and yield, also water relations for wheat cultivar Sakha 69. Irrigation was applied at four treatments i. e. durations of irrigation cycles of about 8, 13, 17 or 28 days. Results showed that grain or straw yield, water use efficiency (WUE) or seasonal evapotranspiration (ET) linearly decreased by increasing the durations of irrigation cycles ; while, (WUE) linearly increased by increasing seasonal (ET). Moreover, results indicate that soil moisture extraction from the upper 30 cm as a percentage of seasonal (ET) as affect ed by irrigation treatments of about 8, 13, 17 and 28 day cycles was 79. 68, 77. 47, 75. 89 and 70. 71% as averages for the two seasons. As well as daily soil moisture extraction from each depth reached to peak use rate after 100-137 days from planting. Seasonal (kc) for Blaney-Criddle formula was 0. 835, 0. 768, 0. 759 and 0. 719 for irrigation cycles of about 8, 13, 17 and 28 days in the first season, respectively ; whereas, in the second season it was 1. 000, 0. 952, 0. 909 and 0. 843 for the same respective treatments.
Publication year 1991
Pages 49-61
Organization Name
serial title Com. Sci . And dev.Res.
Department Cotton Agronomy Research
Project
External authors (outside ARC)
    سعد محمد الجاهل معهد بحوث القطن
Agris Categories Plant genetics and breeding
Publication Type Conference/Workshop
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