Effect of Compost, Biofertilizer and Chicken Manure on Nutrient Content and Tuber Quality of Potato Crops

摘要

THIS STUDY was carried out in newly jeclaimed land at Sadat city.Taba farm.El Menoufia governorate during 1998/1999 and 1999/2000. Potatoes var.Nicola was cultivated to study the effect of compost, Le. chicken manure (dry manure or extract from chicken after 48h.) and compost (40 m~3 and 60m~3 /fed.) with two kinds of biofertilizer added to the soil (suspension from yeast, pesedoumonas and Bacteria dissolving phosphate) or inoculated with tuber as commercial product called Microbin on nutrient content and yield of potato tuber. The results from this study indicated that applying compost with chicken manure (as dry manure or extract from chicken after 48h.) and biofertilizer that were added to the soil or inoculated with tuber, increased the percentage of nutrients in potato leaves ,dry matter content, total carbohydrates and total yield per plant. The results indicated that using chicken manure as dry manure gave better results than using extract manure after 48 h., but there were no significant differences between these two treatments in most characters recorded. On the other hand, using chicken manure as dry manure with bio fertilizer increased nitrate content in potato tubers than using extract of chicken manure with bio fertilizer, such values were still in the acceptable ranges for human health.