Abstract

DIAZ FRANCO, Arturo et al. Arbuscular mycorrhiza in sorghum under different agro-technological and environmental management. Rev. Mex. Cienc. Agríc [online]. 2013, vol.4, n.2, pp.215-228. ISSN 2007-0934.

The symbiotic relationship between arbuscular mycorrhizal fungi (AMF) and plants induce to improve nutrition and plant health. The biotechnological application of AMF in production systems will depend on the effectiveness of the strain on the agro ecological environment, as well as its adoption with existing practices and equipment. It was determined the effectiveness of Glomus intraradices (strain from INIFAP) inoculated the seed of sorghum (Sorghum bicolor) under different agricultural and environmental management in Tamaulipas during 20072009. 21commercial plots were established, 13 under rainfed and eight under irrigation (0.25-1ha), where the seed was compared with and without the inoculant G. intraradices, the agronomical management was used by the producers. Under rainfed weren't added inorganic fertilizers, while under irrigation was used in different doses ofN and P, only in one site manure was incorporated (2 t ha^-1). Measurements made were, length of panicle, radical fresh biomass and grain yield. The cost of production was estimated (cost-benefit) at each site. On average under rainfed and irrigation was found that G. intraradices increased (p≤ 0.01) root biomass, panicle length and grain yield of 7.6 g, 3.3 cm and 524 kg ha^-1, respectively and the profitability of production grew 17%. The results proved a consistent promoting response that the mycorrhizal inoculant had on sorghum, compared with non-inoculated seed, despite the variability of genotypes, soils, agronomical and environmental practices.

Keywords : Sorghum bicolor; Glomus intraradices; productivity.

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