Evaluation of Phosphorus Fertility Status of Calcareous Alkaline Soils under Rice Based Cropping Sequences

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概要

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• Investigations to evaluate the phosphorus fertility status of soils from rice-wheat, rice-berseem, and rice-fallow cropping sequences were carried out in a greenhouse using 39 representative soils, 13 from each site. All the soils contained very high concentrations of total, organic, and inorganic forms of P. Total and organic forms were found frequently more in the rice-berseem sequence followed by the rice-wheat and rice-fallow sequences. On the other hand the proportion of inorganic and AB-DTPA extractable fractions was greater in the rice-fallow sequence followed by the rice-wheat and rice-berseem sequences. In most of the soils in all the cropping sequences there was a medium to low range of AB-DTPA P with 61.5 to 69.2% falling in the medium range. Furthermore, flood water, aerobic and anaerobic AB-DTPA were highly significantly correlated with the amount of P absorbed by rice.

• 社団法人日本土壌肥料学会の論文

著者

• Gill M

  Land Resources Section National Agricultural Research Centre

• Aslam M

  Land Resources Section National Agricultural Research Centre

• Zia M.

  Laboratory of Soil Science, Faculty of Agriculture, Kyoto University

• Munsif M.

  Land Resources Section National Agricultural Research Centre

• Gill M.A.

  Land Resources Section National Agricultural Research Centre

• Zia M

  Laboratory Of Soil Science Faculty Of Agriculture Kyoto University

• Munsif M

  Land Resources Section National Agricultural Research Centre

関連論文

• Integrated Use of Organic Manures and Inorganic Fertilizers for the Cultivation of Lowland Rice in Pakistan
• Nitrogen Management and Fertilizer Use Efficiency for Lowland Rice in Pakistan
• Evaluation of Phosphorus Fertility Status of Calcareous Alkaline Soils under Rice Based Cropping Sequences

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