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El-Ghamry, A., El-Dissoky, R., AbdEl-Hameed, A. (2009). EFFECT OF ORGANIC AND MINERAL NITROGEN FERTILIZERS ON POTATO CROP. Journal of Soil Sciences and Agricultural Engineering, 34(4), 4043-4050. doi: 10.21608/jssae.2009.90831
A. M. El-Ghamry; R. A. El-Dissoky; A. M. AbdEl-Hameed. "EFFECT OF ORGANIC AND MINERAL NITROGEN FERTILIZERS ON POTATO CROP". Journal of Soil Sciences and Agricultural Engineering, 34, 4, 2009, 4043-4050. doi: 10.21608/jssae.2009.90831
El-Ghamry, A., El-Dissoky, R., AbdEl-Hameed, A. (2009). 'EFFECT OF ORGANIC AND MINERAL NITROGEN FERTILIZERS ON POTATO CROP', Journal of Soil Sciences and Agricultural Engineering, 34(4), pp. 4043-4050. doi: 10.21608/jssae.2009.90831
El-Ghamry, A., El-Dissoky, R., AbdEl-Hameed, A. EFFECT OF ORGANIC AND MINERAL NITROGEN FERTILIZERS ON POTATO CROP. Journal of Soil Sciences and Agricultural Engineering, 2009; 34(4): 4043-4050. doi: 10.21608/jssae.2009.90831

EFFECT OF ORGANIC AND MINERAL NITROGEN FERTILIZERS ON POTATO CROP

Article 5, Volume 34, Issue 4, April 2009, Page 4043-4050  XML PDF (488.29 K)
Document Type: Original Article
DOI: 10.21608/jssae.2009.90831
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Authors
A. M. El-Ghamry1; R. A. El-Dissoky2; A. M. AbdEl-Hameed3
1Soil Dept., Faculty Agric., Mansoura Univ., Egypt.
2Soil Improvement Preservation and Dept., Soil Water and Environ. Res. Inst., Agric. Res. Center, Giza, Egypt.
3Plant Nutrition Dept., Soil Water and Environ. Res. Inst., Agric. Res. Center, Giza, Egypt
Abstract
A field experiment was conducted on alluvial soil at Dakahlia Governorate, Egypt during the growing season of 2007/2008 to study the effect of organic-N as rice straw compost (three levels 0, 6 and 12 t fed-1), inorganic-N as ammonium nitrate (three rates 60, 120 and 180 kg N fed-1) and their interaction on potato (Solanum tuberosum, L) cultivar Spunta. Organic-N and mineral-N application significantly increased leaves No./plant, plant height and leaf area. While, the interaction effect between organic and mineral N was insignificantly on leaves No./plant and plant height and  significantly on leaf area. Fresh tuber yield and dry shoot yield significantly increased with compost and mineral-N application and their interaction. The highest value of fresh tuber yield was 19, 28 t fed-1 with interaction of 180 kg N + 12 t fed-1 compost. Dry matter % in tubers was significantly affected by mineral-N, compost application and their interaction after 70, 90 and 110 days from planting. Protein percent and specific gravity were significantly affected with mineral-N fertilization, but insignificantly affected by compost application. N, P and K % in shoots and tubers dry matter were increased with mineral nitrogen and compost addition and their interaction as compared with control at different periods.
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