Influence of photosyntetically active radiation on the productivity of vegetable beans under the conditions of Forest-Steppe of the Ukraine

Abstract

Potential capacities of vegetable bean sorts and actual harvest losses are elucidated depending on summarized photosynthetically active radiation during vegetative period in Forest-Steppe Zone of the Ukraine. We found that potential yield of vegetable beans was depending on summarized PAR during vegetative period. Potential harvest of the sorts of vegetable beans under 2 % of PAR’s use would be 57.25-59.3 t/ha, which was 2.2- 3.6 times more than their actual harvest. The lesser losses of actual harvest compared to potential one were recorded for the sorts Bartoli and Windsor (2.2-2.3 times).