Effect of irrigation regimes and phosphatic fertilizer rates on yield, yield components and water use efficiency of faba bean [electronic resource].

Includes reference.

Two field experiments were conduct of Ismailia Agricultural Research Station in 2005/2006 and 2006/2007 seasons to study the effect of irrigation regimes (30,60 and 90%) available soil moisture depletion) and phosphorus fertilizer rates (0, 15, 30 and 45 kg P2O5/Fed.) on yield, yield components and protein percentage of faba bean seeds (Giza 461 variety) as well as water use efficiency. Results indicated that the differences between irrigation regimes for plant height, number of branches per plant, number of pods per plant, seed yield (kg/fed.), straw yield (kg/fed.), 100 - seed weight (g), protein percentage (%) and water use efficiency were significant in the two seasons. Irrigation faba bean plants at 30% available soil moisture depletion (ASMD) gave the highest values for plant height, number of pods per plant in the first season only, and -straw yield in the two seasons, while 60% (ASMD) gave the highest values for number of branches per plant, number of pods per plant in second season only, seed yield (kg/fed.), 100 - seed weight (g) and water use efficiency in the both seasons. On the other hand, irrigation at 90% ASMD gave the highest values for protein percentage in the two seasons. Increasing phosphorus rate upto 45 kg .P2O5/Fed. Led to significant increase in yield and yield components and protein percentage compared with other phosphorus traits (0, 15 and 30) with exception use 30 P2O5 kg/fed. Rate in water use efficiency in the both seasons. Interaction between irrigation regimes and phosphorus rates was significant for all traits studied except number of branches per plant, number of pods per plant, 100 - seed weight (g) and protein percentage were insignificant. Irrigation faba bean plants at 30 and 60 % with 45 kg P₂O₅/fed. gave the highest values of most attributes studied. Results indicated that irrigation faba bean plants at 90 % ASMD led to decreased water use efficiency.

Summary in arabic.

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