RESUMO
The results of this work showed that the observed responses of plant growth and some related physiological aspects were dependent on [1] the concentration of CaCO 3 in soil, [2] the organ of the plant. Thus, the results of this work could be summarized as follows: - 1. The growth criteria of shoot [length, dry weight, area of fully expanded leaf and the total leaf area] were highly significantly decreased in response to the high levels of CaCO 3 treatments [40, 60 and 80 percent] during the plant growth. 2. Soil application of different levels of CaCO 3 induced appreciable decrease in total auxins, gibberellins and cytokinins and caused accumulation of abscisic acid. 3. The different levels of CaCO 3 induced different decreases in chlorophyll a, chlorophyll b, and total pigments with respect to the recorded values for control. Also, the results showed that the high concentration of CaCO 3 [60, 80 percent] highly significantly increased the carotenoids content while the lower levels of CaCO 3 [10, 20 and 40 percent] non-significantly affected such photosynthetic pigment. The results also showed a reduction in 14CO2-photo-assimilation in response to the different levels of CaCO3, the magnitude of reduction in the soluble, insoluble, total photosynthates and soluble/insoluble ratio photosynthates was more pronounced with the increase in the concentration of CaCO3 4. It has found that uptake and transport of Ca [++], Na [+] and K [+] ions under soil application of CaCO 3 are closely related to the individual parts of Phaseolus vulgaris plants