Possibilities for Manipulating Mycorrhizal Associations in Crops

Lee, K K and Wani, S P (1991) Possibilities for Manipulating Mycorrhizal Associations in Crops. In: Proceedings of the International Workshop on Phosphorus Nutrition of Grain Legumes, 8‑11 Feb. 1990, ICRISAT Patancheru, Andhra Pradesh, India.

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Vesicular-arbuscular mycorrhizae (VAM) occur in the roots of most crops and are known to play an important role in crop growth. Legumes are quite responsive to VAM, especially in soils with low available phosphorus (P) levels. Possible approaches to manipulating VAM associations may be (1) inoculation with selected VAM fungi, (2) selection of plant genotypes that are conducive to colonization by efficient VAM fungi, and (3) establishment of a soil environment that favors in- creased VAM number and activity. This chapter evaluates the feasibility of each of these possible approaches, using appropriate examples from the literature andfrom our experience. Manipulating VAM associations through inoculation is not feasible on a field scale unless pure VAM fungi can be grown in large quantities by standard microbiological techniques. There is also increasing evidence that the magnitude of VAM activity differs among plant genotypes, and nu- merous studies have indicated that VAM fungal status can be altered by soil management. Our experience in exploiting the VAM fungus along with the use of rock phosphate in West Africa has revealed the possibility of improving crop production in low-P soils, using rock phosphate as a P fertilizer.

Item Type: Conference or Workshop Item (Paper)
Subjects: Others > Food Legumes
Others > Plant Pathology
Depositing User: Mr Sanat Kumar Behera
Date Deposited: 11 Nov 2011 07:51
Last Modified: 11 Nov 2011 07:52
URI: http://oar.icrisat.org/id/eprint/3898
Acknowledgement: UNSPECIFIED
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