The effect of arbuscular mycorrhizal fungi on growth of Phaseolus vulgaris under varying NPK levels

Document Type : Research Article

Authors

1 1Botany Dept., Faculty of Science, Mansoura Univ., Dakahlyia, Egypt Emeritus Prof. Mansoura Faculty of Science.,

2 Botany Dept., Faculty of Science, Mansoura Univ., Dakahlyia, Egypt Emeritus Prof. Mansoura Faculty of Science.,

3 Associate Prof. Mansoura Faculty of Science

4 researcher in Mansoura university Faculty of Science

10.21608/mjb.2020.460694

Abstract

Common bean (Phaseolus vulgaris L.) is economically one of the major vegetable crops in Egypt for local consumption as well as for the exportation. The over-use of chemical fertilizers such as NPK negatively affects soil properties making it unsuitable for raising crop plants. The intensive use of these inputs has also resulted in serious health and environmental hazards. For these reasons, biofertilizers used to replace chemical fertilizers. A pot experiment was carried out to explore the effect of 0% NPK, 25% NPK & 100% NPK in combination with arbuscular mycorrhizal fungi (AMF) on P. vulgaris growth during vegetative stage. As compared to –v control value, the application of AMF significantly increased growth parameters (at least 117% root length, 110 % shoot length, 117% fresh &dry weight, and 104% water percentage/ plant), photosynthetic pigments (at least 118%  total pigments), carbohydrates fractions(at least 160% total carbohydrate), nitrogen, fractions (at least 135%), total protein (at least 135%) and some elements (N “at least 300%”, P ( at least 457%) & K) of common bean plants grown at 25% NPK and 100% NPK; especially the former. Such stimulations were positively linked with the mycorrhizal colonization in the common bean root tissue.

Keywords