Plant density of semi-deterninate common bean

AGIM CANKO

Agricultural University of Tirana, Agricultural and Environmental Faculty, Crop Production Department

Corresponding author e-mail: agimcanko@yahoo.com

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Abstract

Restudying of some technological elements of dry bean is necessary because of climatic changes at last years. In this aspect, since the optimal density of bean plants depends principally by the soil, climatic conditions and genotype, studying the influence of plant density in two new varieties, created by artificial hybridization, has been motivated. There were three plants density levels 150, 250 and 350 thousand of plants/ha and two varieties, L3221 and L232. The experiment was conducted at the experimental fields of ATTC Fushë Krujë, during 2007 and 2008 growing seasons. It must be accentuated that the climatic conditions, in two years of study, especially during the reproductive period, haven’t been convenient for dry bean production. The data obtained, indicated that increasing of plants density is followed by the reduction of the plant cycle in 2-3 days. Furthermore, increasing three times the number of plants leads to linear decrease of production elements values. On the other hand, the increase of plants density, from 150 to 350 thousand plants/ha, has increased significantly the yield about 5 quintal/ha. Among the varieties in the study, there are no significant differences on yield, because they belong to the same growing type, but they have different characteristics, that aren’t the target of this study.

Keywords: dry bean, haevest index, biological production, competition ability.

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