Abstract
This study aimed to investigate the effects of arbuscular mycorrhizal (AM) fungi with different levels of NPK fertilizers on yield production of common bean plants which common bean plants were subjected to five levels of NPK fertilizers (0, 25, 50, 75, 100 %). Application of AMF significantly increased the growth and yield components of common beans with minimized the levels of NPK comparing to equivalents non-mycorrhizal ones. The results obtained revealed that inoculation with AMF and the concentrations 50% and 75% of NPK with AMF are the greater than other concentrations and non-mycorrhizal plants. Mycorrhizal Common bean plants had significantly higher number of pods, length of one pod, pods weight, 100 seeds weight, weight of seed/plant and intensity of mycorrhizal colonization(M%) . Concentrations of nutrients (N, P, K, Ca and Mg) and total carbohydrates, crude protein and mycorrhizal dependency of some yield parameters were significantly increased in mycorrhizal plants at different NPK levels when comparing to those of non-mycorrhizal plants paticularly at (50% and 75%) concentration of NPK, but lower Na concentration in mycorrhizal common bean seeds than those of non-mycorrhizal.Int J Appl Sci Biotechnol, Vol 4(2): 191-197
Highlights
Consumption of legumes dry beans, has increased in some West European countries and the United States, due to an increased realization of consumers about the nutritional characteristics in foods (Peksen and Artik, 2005)
Inoculum Preparation of Arbuscular Mycorrhizal Fungi The inoculum of arbuscular mycorrhizal species including Glomus clarum, Glomus mosseae, Glomus intraradices, Gigaspora margarita and Gigaspora gigantean were originally isolated from rhizosphere soil of common bean plants using the wet sieving and decanting technique (Gerdemann and Nicolson, 1963), and identified by the author
The application of NPK fertilizers to the infected mycorrhizal plants caused a significant increase in yield components at 50 and 75% of NPK fertilizers as compared to the control treatments
Summary
Consumption of legumes dry beans, has increased in some West European countries and the United States, due to an increased realization of consumers about the nutritional characteristics in foods (Peksen and Artik, 2005). Beans constitute an important source of dietary protein. Due to alkalinity of Egyptian soils, the obtainable phosphorus in the added fertilizer reduces sharply after a short period since application rapidly and transformed to tricalcium phosphate which is unavailable to the plants (khalil, 2013). The problem that fertilizer consumer face is to choose fertilizer that can give higher yield but harmful on environment or to choose fertilizer that can preserve the environment but give slower effect. Biofertilizer can be used to substitute organics and chemical fertilizer, which does not source of pollution like chemical fertilizer and give faster effect compare to organic fertilizer, it should be put at the first place (Norhazimah, 2009)
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