Rizk,, F. (2001). EFFECT OF SOME SLOW RELEASE NITROGEN FERTILIZERS ON GROWTH AND YIELD OF POTATO PLANTS. Journal of Plant Production, 26(9), 5671-5686. doi: 10.21608/jpp.2001.257931
Fatma A. Rizk,. "EFFECT OF SOME SLOW RELEASE NITROGEN FERTILIZERS ON GROWTH AND YIELD OF POTATO PLANTS". Journal of Plant Production, 26, 9, 2001, 5671-5686. doi: 10.21608/jpp.2001.257931
Rizk,, F. (2001). 'EFFECT OF SOME SLOW RELEASE NITROGEN FERTILIZERS ON GROWTH AND YIELD OF POTATO PLANTS', Journal of Plant Production, 26(9), pp. 5671-5686. doi: 10.21608/jpp.2001.257931
Rizk,, F. EFFECT OF SOME SLOW RELEASE NITROGEN FERTILIZERS ON GROWTH AND YIELD OF POTATO PLANTS. Journal of Plant Production, 2001; 26(9): 5671-5686. doi: 10.21608/jpp.2001.257931
EFFECT OF SOME SLOW RELEASE NITROGEN FERTILIZERS ON GROWTH AND YIELD OF POTATO PLANTS
Hort. Dept., National Research Centre, Dokki, Cairo, Egypt.
Abstract
Two field experiments were carried out during the two successive seasons of 1999/2000 and 2000/2001 to study the effect of some slow release nitrogen fertilizers (Nile compost -enciabein and mixture of them ,Nile compost+enciabein 1:1) with 4 levels (0 ,120,150 and 180 N unit per fed. ) on growth ,yield and its components as well as chemical composition of potato tubers .The data were following :
1- Addition of Nile compost as an organic fertilizer resulted the best growth characters. But the mixture of chemical (enciabein) with organic (Nile compost ) had the heaviest tanage /fed. as well as the best physical tuber quality.On the other hand ,the addition of Nile compost as alone and /or mixed with the enciabein gave an enhancement in mineral content, starch, total carbohydrates and total sugars content in potato tuber tissues.
2- The best growth of potato plant was obtained by the addition of the highest levels offertilizer, i.e. 180 N unit /fed. But, the heaviest weight and number of tubers were resulted from the addition of nitrogen within the rates of 150-180 N units / fed. The highest values of starch ,total carbohydrates , total sugars, N, P, K, and Zn content were obtained by addition nitrogen fertilizer at highest level, i.e. 180 N unit/ fed. concerning the values of Fe and Mn recorded their highest content when potato plants received 150-180 N unit /fed.
3- Application of organic nitrogen fertilizer (Nile compost) at level of 180 N unit /fed. resulted the best growth characters . Used of the mixture of enciabein + Nile compost (1:1) at level of 150 N unit /fed. gave the highest tuber yield as ton /fed., average weight and number and size as well as the highest Fe , Mn, Zn, and Cu . Also, using the mixture of them at highest level 180 N unit /fed. gained the highest values of starch, total carbohydrates, total sugars, N, P, and K content.
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