Download Biological Nitrogen Fixation for Sustainable Agriculture: by B. B. Bohlool, J. K. Ladha, D. P. Garrity (auth.), J. K. PDF

By B. B. Bohlool, J. K. Ladha, D. P. Garrity (auth.), J. K. Ladha, T. George, B. B. Bohlool (eds.)

Chemical fertilizers have had an important effect on nutrition creation within the fresh previous, and are this day an quintessential a part of smooth agriculture. however, the oil obstacle of the Seventies and the present center East difficulties are consistent reminders of the vulnerability of our fossil gas based agriculture. There are immense components of the constructing global the place N fertilizers are neither to be had nor cheap and, in each one of these nations, stability of cost difficulties have led to the elimination of N fertilizer subsidies. The exterior charges of environmental degradation and human healthiness some distance exceed financial issues. enter potency of N fertilizer is without doubt one of the lowest and, in flip, contributes considerably to environmental toxins. Nitrate in flooring and floor waters and the chance to the soundness of the ozone layer from gaseous oxides of nitrogen are significant overall healthiness and environmental issues. The removing of huge amounts of crop produce from the land additionally depletes soil of its local N reserves. one other quandary is the decline in crop yields lower than non-stop use of N fertilizers.
those fiscal, environmental and construction concerns dictate that organic possible choices that may increase, and every so often exchange, N fertilizers has to be exploited. long term sustainability of agricultural structures needs to depend upon the use and powerful administration of inner assets. the method of organic nitrogen fixation deals and economically appealing and ecologically sound technique of lowering exterior nitrogen enter and bettering the standard and volume of inner assets. during this booklet, we define sustainability concerns that dictate an elevated use of organic nitrogen fixation and the limitations on its optimum use in agriculture.

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Read or Download Biological Nitrogen Fixation for Sustainable Agriculture: Extended versions of papers presented in the Symposium, Role of Biological Nitrogen Fixation in Sustainable Agriculture at the 13th Congress of Soil Science, Kyoto, Japan, 1990 PDF

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Additional info for Biological Nitrogen Fixation for Sustainable Agriculture: Extended versions of papers presented in the Symposium, Role of Biological Nitrogen Fixation in Sustainable Agriculture at the 13th Congress of Soil Science, Kyoto, Japan, 1990

Example text

Much has been learnt about the important process of biological N 2 fixation and much is understood about its potential benefits, particularly in tropical and sub-tropical regions where productivity is often constrained by N supply. The challenge however, remains to uncover more of its mysteries and to exploit more effectively what is already known so that N 2 fixation can be managed for the future benefit of humanity. Acknowledgements Much of the unpublished information presented in this chapter has resulted from collaborative experimentation between ACIAR Project 8800 and Projects 8363, 8419, and 8731.

Ed. J R Wilson. pp 417-425.

CAB International, Wallingford, UK. Michiels K, Vanderleyden J and Van Goo! A 1989 Azospirillum-plant root associations: A review. Bioi. Fertil. Soils. 8, 356-368. Miranda C H B, Urquiaga Sand Boddye R M 1990 Selection of ecotypes of Panicum maximum for associated biological nitrogen fixation using the 15 N isotope dilution technique. Soil Bioi. Biochem. 22, 657-663. Moawad H and Bohlool B B 1984 Competition among Rhizobium spp. for nodulation of Leucaena leucocephala in two tropical soils. Appl.

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