+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Transformation availability and mobilization of applied phosphorus in red soils



Transformation availability and mobilization of applied phosphorus in red soils



Indian Journal of Agricultural Chemistry 20(1): 49-62



Availability and transformation of phorphorus applied as monocalcium phosphate, dicalcium phosphate and mixtures of these in two ratios was studied through incubation in two red soils (Udic Haplustalf) of Hessaraghatta, Bangalore [India] differing in their pH. The recovery of applied phosphorus at the end of eighteen weeks ranged between 16 to 21 per cent in the neutral soil and 5 to 9.5 per cent in the slightly acidic soil. Fractionation studies indicated that Fe-P and reductant soluble P constituted, the major inorganic soil P fractions. Higher saloid bound P and Ca-P was observed in soils treated with dicalcium phosphate. In the soils treated with P, mobilisation of P by amendments, F.Y.M., cowpea, and fungal culture (Aspergillus awamori) with F. Y. M. as carrier, was studied. Soils treated with fungal culture maintained higher available P throughout the incubation period. P fractionation indicated that mobilization occurred mainly through transformation of Fe-P to saloid bound P. Uptake of P by ragi (Eleusine coracana) in Neubauer tests and adsorption data showed that cowpea and fungal culture were more effective in mobilising fixed P.

Please choose payment method:






(PDF emailed within 1 workday: $29.90)

Accession: 006825719

Download citation: RISBibTeXText


Related references

Transformation and availability of applied phosphorus in acid soils of Mudgere-1. Studies on the effect of different sources and levels of phosphorus. Mysore Journal of Agricultural Sciences 25(2): 189-195, 1991

Availability and transformation of applied phosphorus in calcareous lebanese soils. Soil Science Society of America Journal 49(5): 1215-1220, 1985

Availability of phosphates in soils enriched by long-term phosphorus fertilization. 1. availability of transformation products in acid soils. 1970

Availability to plants of phosphates in soils enriched by long-term phosphorus fertilization. 2. availability of transformation products with defective apatite structure in neutral and carbonate soils. 1971

Integrated nutrient management ii. transformation of applied phosphorus into inorganic phosphorus fractions in relation to its availability and uptake in calcareous soil. Journal of the Indian Society of Soil Science 39(4): 703-709, 1991

Effect of associated cations and time of application of phosphorus fertilizers on the availability of applied phosphorus in different rice soils. Journal of the Indian Society of Soil Science 27(1): 76-78, 1979

Studies on the plant-availability of soil phosphate by long-term phosphorus fertilization. 3. Availability of transformation products in neutral and calcareous soils. Zeitschrift fur Pflanzenernahrung und Bodenkunde 133(1-2): 4-17, 1972

Effect of phosphorus source applied to two soils on the soluble phosphorus in chemical extractants and its availability to wheat and maize. Anais do decimo quinto congresso Brasileiro de ciencia do solo, Campinas, SP, Brazil, 14 a 20 de julho de 1975: 215-270, 1976

Studies on the plant availability of soil phosphate accumulated by long term phosphorus fertilization part 3 availability of transformation products in neutral and calcareous soils. Zeitschrift fuer Pflanzenernaehrung und Bodenkunde 133(1-2): 4-17, 1972

Availability and transformation of phosphorus applied with four carriers in a dark plastic soil. Ciencias de la Agricultura (22): 115-123, 1985

Transformation and availability of phosphorus applied to soil under coffee coffea arabica. Journal of the Indian Society of Soil Science 30(3): 285-290, 1982

Availability and transformation of the phosphorus applied with four carriers in a dark plastic soil. Ciencias de la Agricultura (22): 115-123, 1985

Liming and phosphorus availability in acid soils derived from granites. II - effect of calcium carbonate on the solubility of applied phosphorus as evaluated by the Egner-Riehm method. Agronomia Lusitana 45(4): 433-442, 1996

Transformation of applied phosphate and its availability in acid soils. Two and a Bud 37(1): 24-30, 1990