I= PLANT AVAILABILITY OF NATIVE, RESIDUAL AND FERTILIZER PHOSPHORUS IN ALLUVIAL SOILS OF RICE TRACT
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Title of Thesis
PLANT AVAILABILITY OF NATIVE, RESIDUAL AND FERTILIZER PHOSPHORUS IN ALLUVIAL SOILS OF RICE TRACT

Author(s)
Obaid-ur-Rehman
Institute/University/Department Details
University Of Agriculture Faisalabad/Institute Of Soil & Environmental Sciences
Session
2004
Subject
Soil & Environmental Sciences
Number of Pages
151
Keywords (Extracted from title, table of contents and abstract of thesis)
phosphorus, calcareous soils, pakistan soils, crops, plant production, cropping systems, phosphorus depletion

Abstract
No Abstract

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1720.4 KB
S. No. Chapter Title of the Chapters Page Size (KB)
1 0 Contents
129.09 KB
2 1 Introduction 1
48.26 KB
3 2 Review Of Literature 5
367.07 KB
  2.1 Phosphorus In Soil 5
  2.2 Phosphorus Availability In Calcareous Soils 6
  2.3 Factors Affecting Phosphorus Adsorption 9
  2.4 Reaction Of P With Soil Constituents 12
  2.5 Phosphorus Adsorption Isotherms 19
  2.6 Phosphorus Status Of Pakistan Soils 22
  2.7 Phosphorus Requirement Of Crops 24
  2.8 Critical P Concentration For Plant Production 26
  2.9 Phosphorus Management In Multiple Cropping Systems 28
  2.10 Phosphorus Build-Up In Soils 29
  2.11 Estimation Of Residual Effectiveness Of Applied Phosphates 30
  2.12 Phosphorus Depletion 33
  2.13 Agronomic Effectiveness 34
4 3 Materials And Methods 36
111.54 KB
5 4 Results And Discussion 46
908.64 KB
  4.1 Phosphorus Adsorption Isotherms 46
  4.2 Phosphorus Build-Up Study 57
  4.3 Residual Phosphorus (Depletion) Study 97
  4.4 Phosphorus Use Efficiencies Of The Cropping System In The P Build-Up Study 116
6 5 Summary 122
45.98 KB
7 6 Literature Cited 126
298.01 KB