Effect of irrigation methods and potassium fertilizer levels on growth, yield and its quality of snap bean (phaseolus vulgaris l) [electronic resource].

Includes references.

Two field experiments were conducted at the Agricultural Experimental Station, Faculty of Agriculture, cairo University, at Giza during two successive summer seasons of 1999 and 2000 to study the effect of irrigation methods i.e., sub surface drip, surface drip, sprinkler and furrow irrigation and potassium fertilizer levels (0,50 and 100 Kg. K,OIfed.) and their interaction on the vegetative growth, chemical composition. green pods yield and pods quality as well as water use efficiency for snap bean C.V. Bronco. A split plot design with three replications was used where irrigation methods were considered as main plot, while potassium fertilizer levels were randomly applied in sub plot. The results indicate that using suIHurface drip irrigation syslem in irrigation ofsnap bean resulted in increasing the vegetative growth traits expressed as plant height, number of branches/plant, fresh and dry weight of Leaves and stems, as well as average leaf area. Increasing potassium level up to the highest used one(l00 Kg. K₂O./fed.) reflected the highest values for all the studied growth parameters compared with other used level and the control treatment Such recorded growth aspects were significantly increased as a result of the interaction between the studied irrigation system and the level of potassium fertilizer, In this respect, following sub surface drip syslem combined with (100 Kg. K₂O Ifed.) reflected the highest values for all the studied growth characters. Green pods yield per plant and feddan, number of pods per plant, average pod weight and length as well as N, P and K content in plant foliage and green pods were significantly affected by irrigation system, level of potassium fertilizer and their interaction. In this respect, S\Jb-guface drip irrigation and the highest used level of potassium fertilizer recorded the highest values of all estimated yield parameter and chemical constituents compared with other tested lreatmeDts, the sub surface drip irrigation system shows a bigger increase in water use efficiency than surface drip, sprinkler and furrow irrigation methods.

Summary in Arabic.

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