Overview
- Editors:
-
-
J. K. Ladha
-
F. J. Bruijn
-
K. A. Malik
Access this book
Other ways to access
Table of contents (20 chapters)
-
-
- J. K. Ladha, F. J. de Bruijn, K. A. Malik
Pages 1-10
-
-
- J. K. Ladha, W. L. Barraquio, L. Revilla
Pages 15-24
-
- F. J. de Bruijn, J. R. Stoltzfus, R. So, P. P. Malarvithi, J. K. Ladha
Pages 25-36
-
- K. A. Malik, Rakhshanda Bilal, Samina Mehnaz, G. Rasul, M. S. Mirza, S. Ali
Pages 37-44
-
- G. Kirchhof, V. M. Reis, J. I. Baldani, B. Eckert, J. Döbereiner, A. Hartmann
Pages 45-55
-
- Barbara Reinhold-Hurek, Thomas Hurek
Pages 57-64
-
- Ivan R. Kennedy, Lily L. Pereg-Gerk, Craig Wood, Rosalind Deaker, Kate Gilchrist, Sunietha Katupitiya
Pages 65-79
-
- P. M. Reddy, J. K. Ladha, R. B. So, R. J. Hernandez, M. C. Ramos, O. R. Angeles et al.
Pages 81-98
-
- Youssef G. Yanni, R. Y. Rizk, V. Corich, A. Squartini, K. Ninke, S. Philip-Hollingsworth et al.
Pages 99-114
-
- G. Webster, C. Gough, J. Vasse, C. A. Batchelor, K. J. O’Callaghan, S. L. Kothari et al.
Pages 115-122
-
- Clare Gough, Jacques Vasse, Christine Galera, Gordon Webster, Edward Cocking, Jean Dénarié
Pages 123-130
-
- B. G. Rolfe, M. A. Djordjevic, J. J. Weinman, U. Mathesius, C. Pittock, E. Gärtner et al.
Pages 131-144
-
- Rita Colnaghi, Andrew Green, Luhong He, Paul Rudnick, Christina Kennedy
Pages 145-154
-
- A. Van Dommelen, E. Van Bastelaere, V. Keijers, J. Vanderleyden
Pages 155-160
-
- Gary Stacey, Naoto Shibuya
Pages 161-169
-
- A. M. Hirsch, Y. Fang, S. Asad, Y. Kapulnik
Pages 171-184
-
- Susan M. Swensen, Beth C. Mullin
Pages 185-192
-
- Ray Dixon, Qi Cheng, Gui-Fang Shen, Anil Day, Mandy Dowson-Day
Pages 193-203
About this book
During the next 30 years, farmers must produce 70% more rice than the 550 millions tons produced today to feed the increasing population. Nitrogen (N) is the nutrient that most frequently limits rice production. At current levels ofN use efficiency, we will require at least double the 10 million tons of N fertilizer that are currently used each year for rice production. Global agriculture now relies heavily on N fertilizers derived from petroleUIll, which, in turn, is vulnerable to political and economic fluctuations in the oil markets. N fertilizers, therefore, are expensive inputs, costing agriculture more than US$45 billion annually. Rice suffers from a mismatch of its N demand and N supplied as fertilizer, resulting in a 50-70% loss of applied N fertilizer. Two basic approaches may be used to solve this problem One is to regulate the timing ofN application based on needs of the plants, thus partly increasing the efficiency of the plants' use of applied N. The other is to increase the ability of the rice system to fix its own N. The latter approach is a long-term strategy, but it would have enormous environmental benefits while helping resource-poor farmers. Furthermore, farmers more easily adopt a genotype or variety with useful traits than they do crop and soil management practices that may be associated with additional costs.
