| Titles |
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English :
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Influence of different sources and levels of nitrogen and rock phosphate addition on maize productivity and soil fertility
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Arabic :
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تأثير مصادر ومستويات مختلفة من النتروجين واضافة صخر الفوسفات على أنتاجية الذرة وخصوبة التربة
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| Abstract |
Two field experiments were conducted at Sids Agricultural Research Station Farm during 2010 and 2011 seasons to investigate the effect of two nitrogen fertilizer sources, namely ammonia gas (83% N) and urea (46.5% N) with three levels, i.e. 60, 90 and 120 kg N/fed as well as rock phosphate as phosphorus source under two levels (0.0 and 300 kg rock P/fed) on growth characters ,yield and its components,net income and N, P and K concentrations and uptake of maize (Zea mays L.) as well as soil fertility. The results show that 120 kg N/fed as ammonia gas recorded the highest values of plant height, dry weight/plant, ear length and diameter, 100-seed weight, grain and stover yields, net income, N, P and K concentrations and uptake and nitrogen availability, while number of rows and kernels/ear and P and K availability not affected by either nitrogen sources or levels. Application of rock phosphate significantly increased plant height, dry weight/plant, 100-seed weight, grain and stover yields, net income, N and P concentrations and N, P and K uptake as well as P availability, while ear length and diameter, number of rows and kernels, K concentration and the availability of N and K in soil after harvesting not affected. Phosphorus concentrations in both grains or stover and N and P availability in soil after harvesting were affected by increasing nitrogen levels only under ammonia gas application.
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| Publication year |
2013
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| Pages |
1313 - 1328
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| Organization Name |
Soil, Water and Environment Research Institute (SWERI)
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| Country |
Egypt
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| City |
Mansoura
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| serial title |
J. Soil Sci. and Agric. Eng., Mansoura Univ., Vol. 4 (11): , 2013
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| Author(s) from ARC |
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| Agris Categories |
Soil fertility
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AGROVOC
TERMS |
Ammonia.
Gases.
Growth.
Maize.
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| Publication Type |
Journal
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