MAPPING OF SOME MAIZE GROWING AREAS OF DISTRICT SWABI ON THE BASIS OF PHOSPHOROUS MINERALIZATION

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MAPPING OF SOME MAIZE GROWING AREAS OF DISTRICT SWABI ON THE BASIS OF PHOSPHOROUS MINERALIZATION

Journal Title: Black Sea Journal of Agriculture - Year 2019, Vol 2, Issue 1

Abstract

Laboratory incubation study was conducted to assess the changes in soil Phosphorous concentration of some maize growing areas of district Swabi with time. A total of twenty two rhizosphere soil samples were collected from important soil series of some maize growing areas of district Swabi. 400 g soil from each series was incubated for 6 weeks at field moisture condition and 25±2°C.Phosphorous was determined periodically after each week. All the soils were also analyzed for physico-chemical properties and micronutrient status. Almost all the soil samples were found normal, alkaline in reaction, low in organic matter content and slightly to strongly calcareous in nature, all the soil samples were found silty clay loam in texture except Chota Lahore soil which was found sandy loam in texture. Results showed periodical changes in soil AB-DTPA extractable Phosphorous over incubation period. When averaged across all soil series Phosphorous at beginning time (week 0) gradually increased from 8.15 to 9.14 at week 2 which declined at week 3 to 8.84 and increased again to 12.0 at week 5 but then declined again to 9.89 at week 6. Mean rate of Phosphorous turnover was -0.32, 0.46, 0.20, 0.57, 0.7 and 0.28 mg kg-1 wk-1 at week 1, 2, 3, 4, 5 and 6 respectively. This mineralized Phosphorous from insoluble sources should be considered while making recommendation for low or medium Phosphorous soils.

Authors and Affiliations

Aftab JAMAL, Muhammad Ilyas DURRANI, Muhammad Sarirullaha SARIR

Keywords

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EP ID EP617360
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