Resumen

RAMOS-HERNANDEZ, Eder et al. Efecto de Arachis pintoi sobre las Arvenses asociadas al plátano macho (Musa aab), cárdenas, tabasco, México. Agron. Mesoam [online]. 2011, vol.22, n.1, pp.51-62. ISSN 2215-3608.

Effect of Arachis pintoi on weed control associated with plantain (Musa AAB), Cardenas, Tabasco, Mexico. The experiment was carried out in Cárdenas, Tabasco, Mexico, in a soil with loamy texture, pH moderately acidic, low content of organic matter and total nitrogen, and cultivated with plantain. The objective was to evaluate the effect of Arachis pintoi as a cover crop for weed control in plantain crops. The experimental design was factorial, housed in a randomized complete block, with shading and type of plantain plant cover as associated factors. Three replications were used (October 2008-August 2009). Both, the shading and the cover factors had two levels: 50 (s=± 13,2) and 45 %(s= ± 11.1), and the ground was covered by weeds and by A. pintoi respectively. Shannon-Wiever (H´) and Sörensen (S) indexes were used to determine species richness. Eleven months after the establishment of the experiment, H´ values did not differ significantly, S=0.8, in both shade percentages. The most common weed species were T. triangulare, S. podophylum, P. paniculatum and C. diffusa. The treatment with weeds and 50% of shade had statically the highest value of MS (375.3 ± 83.3 g/m²). MS produced by A. pintoi was statically higher (p=0,05) under 45% (198 g/m²) than under 50% shadea (150,4 g/m²). The effectiveness of A. pintoi in weed control was 52.3% under 45% shade, and 70.5% under 50% shade, respectively.

Palabras clave : Solar radiation; weeds; heliophytes; cover crops; Shannon-Wiever.

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