Effect of application of organic and mineral fertilizers and their combination on the growth and productivity of French beans (Phaseolus vulgaris. L)in Fezzan region, Libya”

Abstract

micro-dosing mineral fertilization technique has shown its effectiveness in improving agricultural productivity in Libya. However, this has still not been optimally combined with organic manure. The objective of this study is to determine the optimal doses of organic matter and mineral fertilizers combined in microdose, and their effects on some physiological characteristics of red bean production. The test was conducted on strips of land (15×11 m2) using an ARCBD system with 5 replications and 4 manure levels( 0%-%25, %50 and 100%). With a dose of: organic 5 t\ha, mineral fertilizer (N 20-P 20-K 20) at 200 kgr\ha and their combination. The results obtained show that the optimal doses of fertilizers are significant difference among all the treatments consider: length and height of plant, leaf weight, pod weight, and weight of horns. Returns from French beans grown with higher fertilizer combination rates NPK+ organic manure were found to be the most profitable in terms of high returns and low risk, mainly After 120 days of cultivation, it was noted that the effect of organic fertilization and mixed fertilization at all concentrations of 25%, 50%, and 100% on the growth and production of pods is still continuing naturally, unlike chemical fertilizers, whose production stopped after 4 months. The reason is due to the availability of nutrients and soil fertility resulting from organic fertilization. The soil still retains the necessary micro and macro nutrients for the plant, and this is the most important factor for using organic agriculture as an alternative to chemical agriculture. In addition to the weight of the leaves, the concentrations of 25%, 50%, and 100% for organic and mixed fertilization treatments were the highest in effect, as the leaf weight for the mixed fertilizer reached 11.98 grams and the organic fertilizer 9.92 grams, compared to the levels of chemical