| Titles |
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English :
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Partial replacement of n-mineral requirements by N-organic source as
related to both sesame - wheat yields and their components
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Arabic :
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إحلال جزئئ للأحتياجات النتروجينية من مصدر معدنى بمصدر نيتروجينى عضوى وعلاقته بمحصولى السمسسم والقمح ومكوناتهما
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| Abstract |
Two successive field experiments were conducted on a sandy soil at Ismailia Agric. Res. Station to evaluate the effect of partial substitution of N-mineral (ammonium sulphate. As) by N-organic source (composted rice straw, Cr) on N, P and K availability in soil, productivity and the uptake of these nutrients for sesame - wheat cropping sequence. Treatments included entire N requirements as individual application of either N-mineral or N-organic as well as ratios of both sources, i.e., 3:1, 1:1 and 1:3 (75%As+25% Cr, 50%As+ 50% Cr and 25% As+ 75% Cr, respectively). The application of N-rates of all amended plots were kept at 45 kg N/ fed for sesame crop at summer season and 100 kg N /fed for wheat at winter season.
Results indicated that incorporation of both N-mineral and N- organic caused a substantial increases in the available N, P and K in soil, where the beneficial effects of organic acids (resulting from the decomposition of organic compost) and N-mineral reached the optimum condition. Organic matter content in soil increased gradually with increasing the portion of applied N-organic source in the mixture. Grain and straw yields of sesame and wheat progressively increased with increasing the applied ratio of N-mineral: N-organic, where the maximum yield was scored under me treatment of 75%As+25% Cr. Also, N, P and K uptake followed a trend almost similar to that of grain and straw yields. Seed oil content and oil yield of sesame was positively affected by the individual or combined treatments of N-organic and N- mineral, both treatments of 100% As and 75%As+25% Cr were similar in their effects and recorded the highest oil content, with a superiority for the treatment of 75%As+25% Cr, which gave the maximum oil yield. Also, the crude protein content in wheat grains increased and achieved the greatest value under the treatment of 75%As+25% Cr
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| Publication year |
2006
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| Pages |
781-792
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| Availability location |
The Egyptian Society of Applied Sciences
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| Availability number |
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| Organization Name |
Soil, Water and Environment Research Institute (SWERI)
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| Country |
Egypt
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| City |
Zagazig
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| Publisher |
Name:
The Egyptian Society of Applied Sciences
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| serial title |
Egyptian Journal of Applied Sciences
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| ISSN |
1110-1571
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| Volume |
21
. 6B
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| Department |
Improvement and Conservation of Cultivated Soils Research
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| Author(s) from ARC |
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| Agris Categories |
Soil erosion, conservation and reclamation
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AGROVOC
TERMS |
Composts.
Nitrogen fertilizers.
Sesame.
Wheats.
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| Proposed Agrovoc |
Nitrogen requrements;
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| Publication Type |
Journal
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