Investigation of some biological characteristics of white beans (Phaseolus vulgaris L.) in different ecological conditions

During a two-year period (1990 - 1991) the effect of ecological factors on appearance of some biological properties of white-beans was examined; for example: the total mass of the plants, their height, weight of the root and the number and weight of the leaves. Four sorts were used: Zajecarski rani, Timocki niski, Rozalija and Galeb. It appeared that the following factors have great influence on the growth dynamics: air temperature, sum and distribution of precipitation during the period of vegetation. Variation in the total quantity of precipitation during the examination period and arrangement of the precipitation within the vegetation period of white-beans greatly influenced the examined biological characteristics. Differences among the sorts referring to the researched properties were greater in 1991, which was meteorologically the most favorable year.