Effect of pozzolan and nitrogen fertilizer in reducing irrigation water and soil moisture stress in three eggplant cultivars( solanum melongina)‎

Abstract EN

Two field experiments were carried out during 2009 and 2010 seasons to study the effects of pozzolan, nitrogen fertilization levels, (50, 75, 100, and 125 kg N / ha) and four irrigation intervals (2, 4, 6, and 8 days) on fruit yield, yield components and chemical proprieties of 3 eggplant cultivars (black beauty, long purple and top bell) in a split split plot design with three replications.

The results indicated that pozzolan treatment significantly increased plant height, leaf area / plant, no.

of fruits / plant and fruit yield / ha besides total soluble solids (TSS) and vitamin C in fruit compared with the pare land (without pozzolan).

Increasing irrigation interval significantly reduced plant height, leaf area / plant, no.

of fruits / plant, fruit yield / ha and increased TSS, and Vitamin C in fruits.

As nitrogen fertilizer increased, plant height, leaf area, no.

of fruits / plant and fruit yield / ha significantly increased also TSS, and Vitamin C in fruits increased.

Eggplant cultivars significantly varied in their response to pozzolan, irrigation interval and nitrogen fertilizer treatments.

Black beauty cultivar significantly dominated the other cultivars in fruit yield / ha.