Management of Biological Nitrogen Fixation for the Development of More Productive and Sustainable Agricultural Systems : Extended versions of papers p

Ladha

ISBN 10: 0792334140 / ISBN 13: 9780792334149

Published by Springer 1995-09, 1995

About this Item

Seller Inventory # 6666-IUK-9780792334149

Bibliographic Details

• Title: Management of Biological Nitrogen Fixation for the Development of More Productive and Sustainable Agricultural Systems : Extended versions of papers p
• Publisher: Springer 1995-09
• Publication Date: 1995
• Language: English
• ISBN 10: 0792334140
• ISBN 13: 9780792334149
• Binding: PF
• Condition: New

About this title

Synopsis

Table 1. Global allocation of arable land between different com­ modities Globally, cereal cropping dominates cultivated land Commodities' Proportion of land area use (around 50% of total area, Table 1). The remain­ (%) ing arable land is used for production of oilseed, fibre, or food and cash crops. In addition, vast areas are Cereals maintained under temporary or permanent pasture for Wheat 16 forage production (2-3 fold greater than the total area Rice 10 under cultivation and permanent crop; Table 1, Fig. Maize 9 1). All cultivated crops, except for legumes (pulses All other cereals 13 and legume oil seeds) require the soil to provide rel­ Total 48 atively large amounts of nitrogen (N). It is necessary for the three most important cereals, wheat (Triticum Legumes aestivum), rice (Oryza sativa) and maize (Zea mays), Legume pulses 5 to take up 20 to 40 kg soil N ha -lover a period of 3 Legume oilseeds 6 to 5 months to satisfy the N requirements of the seed and supporting vegetative structure for each tonne of Total II grain produced (e. g. Fig. 2; Myers, 1988). Produc­ tive pastures on the other hand may assimilate> 100 Other crops I kg N ha- each annum, of which 50 to 90% will be Other oilseeds 6 consumed by livestock in intensively grazed systems Beverages / Tobacco 7 (Ledgardy, 1991; Thomas, 1995).