Grain production and tannin contents on lines of Cajanus cajan (Pigeon pea) in the humid tropic of México

J. Jarillo, E. Castillo, B. Valles, R. Hernández


Three trials were conducted between 1985 and 1989 in a site with a hot humid climate, in order to estimate the grain production potential of pigeon pea along with its nutritive value. In the first trial, using a native ecotype there were significant interactions between sowing date and the linear (P ≤ 0.0128) and quadratic (P ≤ 0.0228) effects of sowing rate. Maximum grain yields were obtained at 18750, 25132 and 26971 hills/ka for the June, August and September 1985 sowings, respectively. In the second trial, the effect of genotype was highly significant (P ≤ 0.005) upon grain yield. Mean grain yield was 2451 Ó 492 kg/ha, and range varied from 1211 to 4401 kg/ha. The third trial also showed a highly significant effect of genotype on grain yield (P ≤ 0.0050). Average yield was 3105 Ó 896 kg/ha and range went from 574 to 4262 kg/ha. Proximate analysis showed the following figures for trial three: dry matter, 86.4-88.6%; ash, 4.3-5.3%; other extract, 0.6-1.4%; crude fiber, 4.1-6.8%; crude protein, 18.6-27.0%; and nitrogen free extract, 56.3-69.5%. Tannins, as tannic acid, ranged from 0.13 to 0.85%. The effect of genotype was also highly significant (P ≤ 0.0001) upon hundred seed weight (32.6 Ó 1.7g), seed number per pod (4.2 Ó 0.4), days to first (117 Ó 8) and 50% (149 Ó 3) flowering, and 75% of ripe pods (168 Ó 3). Plant height ranged from 1.4 to 3.2 m. It was concluded; August was more efficient due to high yield with fewer plants/ha, the plant height was strongly afected by sowing date; the best material in trial two was ICPL-365 (4400 kg/ka); In the trial three lines, with good production included ICPL-6997 and ICPL-265 the local material had performed better (4070 kg/ha) than in trial two; that there is a high potent; al for production of nutritive grain in this specie for environmental conditions described.

Palabras clave

cajanus cajan; flowering; grain yield; plant density; proximate; analysis; pigeon pea; sowing date; tanins

Texto completo:


Revista de la Facultad de Agronomía / Universidad del Zulia /Venezuela/ 

Correo:  / p-ISSN: 0378-7818 / e-ISSN: 2477-9407


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