02523cab a2200301Ia 45 0 u195877 SIRSI 111025s2005 ua ss b eng d EAL eng ara ART MUJAS V30 No12 B 19 Awad, El-S. M. Mansoura University journal of agricultural sciences, 2005 v. 30 (12) part B [electronic resource]. The influence of organic and mineral fertilization on growth, yield and quality of potato crop [electronic resource]. تأثير التسميد العضوى والمعدنى على النمو والمحصول والجودة فى محصول البطاطس.‪ P. 7965-7975. Includes references. Two field experiments were carried out during the two successive fall (nili) seasons of 2003/2004 and 2004/2005 on potato cv. Spunta at Abou Awad village, Aga, Dakahlia Governorate, to study the influence of organic manures (farmyard. biogas and chicken), and mineral fertilizers NPK at the recommended rates fed. in alone and/or combined application, on growth, yield and quality of potato crop. The results revealed that addition 50% of chicken manure combined with 50% mineral fertilizers (NPK) gave the highest values of vegetative growth characteristics (plant height, number of main stems/plant, chlorophyll content and foliage fresh and dry weight (%) at 75 days after planting (DAP), total tubers yield t/fed., number of tubers/plant, tubers average weight, tubers dry matter (%) and specific gravity at harvest in both seasons., Application of mineral fertilization at recommended full rates of NPK gave the highest content of NPK in leaves at 75 DAP and tubers at harvesting in both seasons. On the other hand, the lowest content of nitrate (ppm) in tubers was obtained from plants received farmyard manure alone. Therefore, organic manure must be used as a substitute for chemical fertilizers requirements in potatoes production especially for exportation and also, reduce the risks of environmental pollution. Summary in Arabic. Organic fertilizers. Potatoes Fertilizers. Potatoes Breeding. Potatoes Varieties Mineral fertilizers. Mansoura University Journal of Agricultural Sciences. 2005.v.30(12)part-B 1110-0346 nnas u182197 http://nile.enal.sci.eg/EALE/2005/MUJAS/3005/12/B/7965.pdf Full Text Article. 1 AR lcc 48993 48993