STUDY OF SOIL PHOSPHORUS AVAILABILITY AFFECTED BY DIFFERENT AMOUNTS OF PHOSPHORUS FERTILIZERS
Journal Title: International Research Journal of Applied and Basic Sciences - Year 2011, Vol 2, Issue 12
Abstract
The goal of this research was the investigation of relationship between added phosphorus to soil and the increase of dissolved and absorbable phosphorus and its effect on absorbable Fe and Fe concentration in soils under sugarcane culture. This research was conducted as Randomized Complete Blocks Design with 6 factorial treatment structures 0, 25, 75, 125, 375 and 1100mg P/Kg soil( phosphorus salt was Potassium Mono Phosphate) and 3 time periods, 20, 50 and 60 days. Compound samples of soil were prepared of sugarcan fields. Different concentrations of phosphor were added to fields and samples, in field capacity conditions, were kept at mentioned times in incubator by temperture of 25ºc. Results showed by increasing addition of phosphorus concentration to soil, the concentration of absorbable, dissolved and fixedphosphorus increased and absorbable concentration of Fe and Cu decreased. By adding phosphorus fertilizer to soil, one part of it caused increasing dissolved and absorbable phosphorus and remainder part percipitated in soil. Accordingly, 55.64 % and 18.35% of phosphorus fertilizer were transformed to absorbable form respectively in 30 and 10 days.
Authors and Affiliations
EBRAHIM PANAHPOUR| Departement of Soil Science, Science and Research Branch, Islamic Azad University (IAU), Khouzestan, Iran, NEDA EHTEMAEE| Departement of Soil Science, Science and Research Branch, Islamic Azad University (IAU), Khouzestan, Iran
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