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Pastos y Forrajes

Print version ISSN 0864-0394On-line version ISSN 2078-8452

Abstract

PENTON-FERNANDEZ, Gertrudis et al. Intercropping of Canavalia ensiformis (L.) inoculated with arbuscular mycorrhizal fungi for the production of Morus alba (L.) forage. Pastos y Forrajes [online]. 2016, vol.39, n.1, pp.33-40. ISSN 0864-0394.

On a lixiviated, non-irrigated Ferralitic Red soil, the effect of intercropping Canavalia ensiformis (L.), inoculated with AMF, complemented with mineral fertilizer, on the production of mulberry forage and the nutritional status of the plants was determined. The treatments were formed by the combination of intercropping C. ensiformis (common jack bean) inoculated with AMF (with CeAMF) or not (without CeAMF), and the doses of mineral fertilizer (F0: without fertilizer; F1: 100-50-50 kg ha-1 of N, P2O5 and K2O in each season; F2: 200-100-100 kg ha-1 of N, P2O5 and K2O in each season). A randomized block design with factorial arrangement was used. The highest yields were reached with CeAMF, complemented with F1 (12,15 and 16,65 t ha-1 for years 1 and 2, respectively), without differences from F2 without C. ensiformis in three of the four evaluated seasons. In the rainy season 76 % of the total yield of the year was produced. There was a high and significant relation between the seasonal yield and the accumulated amount of rainfall with determination coefficient of 0,97. The mulberry with CeAMF, complemented with fertilizer, could maintain stable yields between cuttings in each evaluated season. The yield in the rainy season varied depending on the concentration of N in the leaves, which reached 32,6 g kg-1 DM. It is concluded that the intercropping of jack bean inoculated with AMF, complemented with treatment F1, produced a higher yield of edible biomass of mulberry and a better nutritional status of the plants in terms of N concentration in the leaves.

Keywords : biomass; nutritional status; yield.

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