Effect of irrigation and fertilization on growth and yield of sweet pepper grown hydroponically
2010
Shahin, M.M. | Taha, S.S. | Medany, M.A. | Mohamed, D.A.
The present experiment was carried out during 2007/2008 and 2008/2009 successive seasons using sweet pepper (Capsicum annuum L.) cv. Gedeon cultivated within a part of a double-span screen-house at Dokki protected cultivation site, Central Laboratory for Agricultural Climate (CLAC), Agricultural Research Center (ARC). This investigation aimed to study the effect of nitrogen concentrations and irrigation levels on growth and yield of pepper. Three nitrogen concentrations (150, 200, and 250 ppm) and three irrigation levels [100%, 120% and 140% of crop evapotranspiration (ETc)] with three replicates were applied in a split plot design. The results showed that nitrogen concentration at 200 ppm improved the number of leaves, total leaf area and P content. While, yield characteristics increased with N concentration at 150 ppm. Moreover; increasing irrigation level to 140% of ETc led to the highest vegetative growth while the highest yield characteristics and K and Mg contents were recorded with irrigation level at 120% of ETc. The highest P content was recorded with irrigation level at 100% of ETc. However, the effect of interaction showed that, increasing vegetative growth recorded at 200 ppm N combined with 140% irrigation level except total plant fresh and dry weight and Vitamin C which, increased with 250 ppm nitrogen concentration combined with 140% of ETc irrigation level treatment. Nitrogen concentration 150 ppm combined with irrigation level of 120% treatment increased significantly yield characteristics and chlorophyll and K contents in both seasons.
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