|Author:||El-Sabbagh, A. A. ; Abd El-Hafez, S. A. ; El-Bably, A. Z. ; Abou-Ahmed, E. I.|
|Book Group Author:||NA|
A field experiment was conducted in Kafr El-Sheikh Governorate, Egypt, during 2004 and 2005 to study the effects of irrigation after 40, 60 or 80% of the available soil moisture had been depleted on the productivity and water relations of soyabean cultivars Giza 21, Giza 35 and Crawford. Plant height, number of pods per plant, 100-seed weight, seed yield per plant, seed oil content, and seed, straw, biological, oil and protein yields significantly decreased, whereas the seed protein content increased as the level of soil moisture depletion increased. Giza 21 was superior in plant height (77.21 cm), number of pods per plant (51.63), 100-seed weight (15.39 g), seed yield per plant (12.03 g), straw yield (2570 kg/feddan), biological yield (3748 kg/feddan), oil yield (21.85%), oil yield (272.08 kg/feddan), protein yield (428.27 kg/feddan) and water use efficiency (23.60 kg seed yield/cm of water consumed), except seed oil and protein contents, for which Crawford (22.24%) and Giza 35 (34.92%) were superior, respectively. Water requirement values were 75.48, 68.40 and 55.60 cm for irrigation after the depletion of 40, 60 and 80% of the available soil moisture, respectively. The seasonal water consumptive use values increased as the available soil moisture increased in the root zone. The cultivar had no significant effect on water consumption. The highest values of water use and utilization efficiencies were recorded for the irrigation after the depletion of 60% of the available soil moisture. Seasonal water use was positively associated with seed, straw, biological, oil and protein yields, and water use efficiency. [1 feddan=0.42 ha].
|Pages:||571 - 586|
|Journal:||Bulletin of Faculty of Agriculture, Cairo University|
chemical composition, crop yield, cultivars, irrigation,plant composition, plant height, plant water relations, pods, proteincontent, seed weight, seeds, soil water, soyabeans, varietal reactions,water deficit, water use efficiency, yield components, Egypt, Glycine(Fabaceae), Glycine max, North Africa, Africa, Mediterranean Region,Middle East, Developing Countries, Glycine (Fabaceae), Papilionoideae,Fabaceae, Fabales, dicotyledons, angiosperms, Spermatophyta, plants,eukaryotes, chemical constituents of plants, cultivated varieties, soilmoisture, soybeans, watering, Field Crops (FF005) (New March 2000),Plant Breeding and Genetics (FF020), Plant Water Relations (FF062),Plant Production (FF100), Fertilizers and other Amendments (JJ700)