Article: 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.)

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%).

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References

1.

Douds Jr D, Nagahashi G, Pfeffer P, Reider C, Kayser W . On-farm production of AM fungus inoculum in mixtures of compost and vermiculite. Bioresour Technol. 2005; 97(6):809-18. DOI: 10.1016/j.biortech.2005.04.015. View

2.

Kormanik P, BRYAN W, Schultz R . Procedures and equipment for staining large numbers of plant root samples for endomycorrhizal assay. Can J Microbiol. 1980; 26(4):536-8. DOI: 10.1139/m80-090. View

3.

Oliveira R, Vosatka M, Dodd J, Castro P . Studies on the diversity of arbuscular mycorrhizal fungi and the efficacy of two native isolates in a highly alkaline anthropogenic sediment. Mycorrhiza. 2005; 16(1):23-31. DOI: 10.1007/s00572-005-0010-0. View

4.

Schwartz M, Hoeksema J, Gehring C, Johnson N, Klironomos J, Abbott L . The promise and the potential consequences of the global transport of mycorrhizal fungal inoculum. Ecol Lett. 2006; 9(5):501-15. DOI: 10.1111/j.1461-0248.2006.00910.x. View

5.

Maiti D, Variar M, Singh R . Optimizing tillage schedule for maintaining activity of the arbuscular mycorrhizal fungal population in a rainfed upland rice (Oryza sativa L.) agro-ecosystem. Mycorrhiza. 2010; 21(3):167-71. DOI: 10.1007/s00572-010-0324-4. View

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.)