| Titles |
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English :
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Different applications of nitrogen and nhosphorus to soybean and maize under intercropping systems in a calcareous soil
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Arabic :
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أضافات مختلفة من النتروجين والفوسفور لفول الصويا والذرة تحت أنظمة تحميل فى أرض جيرية
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| Abstract |
In a field experiment at Abou Masood Village (48 km South-West to Alexandria), in the summer season of 2005 where the soil was normal calcareous having sandy clay loam texture, soybean (S) (Glycine max) variety Clarck and maize (M) (Zea mays L.) variety single cross 10 were intercropped in four systems 100%S, 67%S + 33%M, 50%S + 50%M and 100%M as main treatments. Inoculation of soybean seeds with Rhyzobia, top dressing of maize with ammonium sulphate, spraying with urea-diammonium phosphate or diluted phosphoric acid were the fertilization sub main treatments in a split plot design.
Yields of seed/grains, straw/stover, some yield components, N, P, K uptake by plants were the measured parameters in that study.
Results could be summarized in the following:
Intercropping was more beneficial than solo cropping for soybean in increasing seed yield, harvest index, pod filling, N and P amounts in seeds and straw and for maize in harvest index, N, K concentration in grains and stover and P in grains. The system, which consisted of two rows, of soybean plants (16000 soybean plant) associated with a row of maize (7000 plant) was better for soybean than the system which consisted of row: row system where 12000 soybean plants were associated with 10500 maize plants while the later was better than 2:1 system for maize.
Inoculation of soybean with Rhyzobia as well as fertilization of maize with 60 kg N/fed. as ammonium sulphate in solo cropping of each and combination of them in intercropping systems were the best in increasing yields of soybean seeds, straw, maize grains and stover beside N and K uptake by them. Spraying with Urea-diammonium phosphate exerted a pronounced effect on the no N fertilized soybean plants (seed and straw) as well as the maize grain yields, harvest index, ear length, 100 grain weight, N and P uptake by them. Spraying with diluted phosphoric acid alone affected positively the no P fertilized plants, where it increased soybean seed and straw yields, maize grains, ear length, 100-grain weight, N and P uptake by them.
The urea-diammonium phosphate resulted in either higher or equal corresponding effects to those of the diluted phosphoric acid.
Inoculation of soybean with Rhyzabia (24000-plant fed.-1) was equivalent in its effect to application of 44 kg N under such conditions.
Generally, the treatment (D) i.e. soybean inoculation with Rhyzabia, maize fertilization with 60 kg N/fed. and spraying with diluted H3PO4 was the best one when it combined with a) solo cropping to increase soybean straw, maize grain and stover yields, b) with 2:1 and c) with 1:1 systems in the other parameters for soybean and maize, respectively
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| URL |
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| Publication year |
2007
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| Pages |
674- 693
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| Organization Name |
Soil, Water and Environment Research Institute (SWERI)
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| City |
الزقازيق
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| serial title |
Egypt. J. of Appl. Sci
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| Author(s) from ARC |
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| Agris Categories |
Soil classification and genesisSoil fertility
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AGROVOC
TERMS |
Calcareous soils.
Intercropping.
Maize.
Nitrogen.
Nutrients.
Phosphates.
Soybeans.
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| Publication Type |
Journal
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