Abstract

TOSQUY-VALLE, Oscar Hugo; ESQUEDA-ESQUIVEL, Valentín Alberto; ZETINA-LEZAMA, Rigoberto  and  ASCENCIO-LUCIANO, Guillermo. Densidad y distancia de siembra en dos variedades de soya de temporal en Veracruz, México. Agron. Mesoam [online]. 2010, vol.21, n.1, pp.63-72. ISSN 2215-3608.

Density and sowing distance for two rain-fed soybean varieties in Veracruz, Mexico. In Veracruz, Mexico, in order to determine the effect of different sowing densities on the behavior of soybean varieties, three row spacing distances: 40, 60 and 75 cm, three plant densities: 200.000, 300.000 and 400 000 plants/ha and two varieties: Huasteca 100 and Huasteca 200 were evaluated using a completely randomized block design with four replications, in a 3 x 3 x 2 factorial and rows arranged in stripes, during the rainy seasons of 2002 and 2003. Days to flowering, plant height, lower pod height, number of internodes and pods per plant and seed yield were measured. In late sowings, at 40 and 60 cm row spacing, the lower pod height was significantly higher and more internodes per plant were produced, than at 75 cm rows. From 300.000 plants/ha on, Huasteca 200 had a lower pod height superior than that obtained at the lowest density. In early sowings, the highest grain yields were produced with 300.000 and 400.000 plants/ha. Huasteca 200 was the latest variety and had higher plant and lower pod heights, but Huasteca 100 was more productive. The highest yield was obtained with Huasteca 100 starting at 300.000 plants/ha.

Keywords : Glycine max; genotypes; row width; plant population; agronomic behavior.

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