Influence of mineral fertilizer, organic fertilizer and biofertilizers on growth, yield and qulity of potato, Solanum tuberosum, L.
2009
Kawsar, D.K.A. | Bazeed, A.H.
Two experiments were conducted during the two successive seasons of 2001/2002 and 2002/2003 at a private farm near EI-Mansoura -Dakahlia Governorate, Egypt to investigate the effect of mineral fertilizers, organic fertilizers (i.e. compost , rock phosphate ) and phosphorus soluble bacteria (PSB) (Bacillus megaterium var. Phosphatium) on the plant growth, yield, and chemical constituents of potato tubers (cv.Slaney). This study was laid out in a randomized complete block design with 8 treatments, three replicates were used. Obtained results could be summarized as follows: - Mineral fertilizer (NPK) treatment recorded the highest values of vegetative growth characters and yield characters followed with mineral fertilizer (NK) and compost plus rock phosphate or PSB either alone or in combinations. The lowest values of vegetative growth parameters were recorded with application of compost alone. Concerning chemical composition and quality parameters, the highest values of N,P and K percentages were found in the mineral fertilizer treatments, while the lowest values of nitrate and nitrite concentration(ppm) were recorded with compost treatments either alone or in combination with rock phosphate and PSB also recorded higher values of specific gravity, starch %,T.s.s.% and ascorbic acid(mg/1009 fresh weight) in both seasons.
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