Evaluation of the Shade Tolerance of Moth Bean (Vigna aconitifolia) and Two Tropical Legume Species

Pantipa Na Chiangmai, Yupa Pootaeng-on, Thanakrit Khewaram


This study aimed to evaluate the shading tolerance ability in moth bean (Vigna aconitifolia) in two experiments. In experiment 1, moth bean, Centrosema pascuorum cv. Cavalcade and Stylosanthes guianensis cv. Tha pra (Tha pra stylo) were grown under different sunlight shading levels by covering these plots with a black net. In Experiment 2, moth bean was intercropped with sunflower (Helianthus annuus) synthetic variety (Suranaree (S) 471). Both experiments were conducted in a field trial from May to August in 2011 at Agricultural Practice Farm of Faculty of Animal Science and Agricultural Technology, Silpakorn University, Phetchaburi Information Technology Campus, Phetchaburi, Thailand.
In Experiment 1, the results showed that shading reduced almost all plant growth characteristics, except plant height. All of legume species had possessed different tolerant capacity to shading, but these plants were dead at 90% of the shading level.
In Experiment 2, the agronomic traits of sunflower were not affected by intercropping with moth bean. Fresh and dry weight per plant of moth bean intercropping with sunflower was decreased, comparing with those of a moth bean monoculture. However, there was no significant difference in crude protein content of moth bean between monoculture and intercropping with sunflower.

Key Words: Vigna; Moth bean; Shading; Intercropping; Forage crop

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