Nitrogen in agricultural soils /

समान संसाधन

• Nitrogen and soil organic matter proceedings of a conference organized by the soil scientists of the National Agriculture Advisory Service, October 22nd-23rd 1964
  प्रकाशित: (1969)
• Soil and fertilizer nitrogen : review study with particular reference to plant nutrition and environmental protection /
  द्वारा: Winteringham, F. P. W.
  प्रकाशित: (1984)
• Mineral nitrogen in the plant-soil system /
  द्वारा: Haynes, R. J.
  प्रकाशित: (1986)
• Application of nitrogen-fixing systems in soil improvement and management
  द्वारा: Hamdi, Y.A
  प्रकाशित: (1982)
• A review of nitrogen in the tropics with particular reference to pastures : a symposium /
  प्रकाशित: (1962)