Abstract

VILLAR SANCHEZ, Bernardo; LOPEZ SALINAS, Ernesto  and  TOSQUY VALLE, Oscar Hugo. Negro Grijalva, a new dry bean cultivar for the tropical areas of Mexico. Agric. Téc. Méx [online]. 2009, vol.35, n.3, pp.355-358. ISSN 0568-2517.

In the tropical areas of southeastern Mexico the small-opaque black bean class is the most demanded by growers and consumers. In 2003 the line DOR 445 was released as a new cultivar named 'Negro Grijalva'. This cultivar is of early maturity, resistant to BGYMV and adapted to acid soils. From 1997-2000 Negro Grijalva was compared to cv. Negro INIFAP across fifteen year-site combinations in the state of Chiapas under residual moisture conditions; the yield of Negro Grijalva was 1 219 kg ha^-1, 35.9% higher than that of Negro INIFAP. In a soil of pH 4.3 in central Chiapas, the yield of Negro Grijalva was similar to Negro INIFAP and with the addition of lime at a rate of 1.5 t ha^-1, its yield increased by 20.8% vs 6.0% in Negro INIFAP. Therefore, Negro Grijalva can be used in acid soils with or without the addition of lime by low income farmers. Negro Grijalva has a seed weight of 23 g per 100 seeds.