TITLE

Integration of crop rotation and arbuscular mycorrhiza (AM) inoculum application for enhancing AM activity to improve phosphorus nutrition and yield of upland rice ( Oryza sativa L.)

AUTHOR(S)
Maiti, Dipankar; Toppo, Neha; Variar, Mukund
PUB. DATE
November 2011
SOURCE
Mycorrhiza;Nov2011, Vol. 21 Issue 8, p659
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Upland rice ( Oryza sativa L.) is a major crop of Eastern India grown during the wet season (June/July to September/October). Aerobic soils of the upland rice system, which are acidic and inherently phosphorus (P) limiting, support native arbuscular mycorrhizal (AM) activity. Attempts were made to improve P nutrition of upland rice by exploiting this natural situation through different crop rotations and application of AM fungal (AMF) inoculum. The effect of a 2-year crop rotation of maize ( Zea mays L.) followed by horse gram ( Dolichos biflorus L.) in the first year and upland rice in the second year on native AM activity was compared to three existing systems, with and without application of a soil-root-based inoculum. Integration of AM fungal inoculation with the maize-horse gram rotation had synergistic/additive effects in terms of AMF colonization (+22.7 to +42.7%), plant P acquisition (+11.2 to +23.7%), and grain yield of rice variety Vandana (+25.7 to +34.3%).
ACCESSION #
66886189

 

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