Correlation and path analysis of interaction between snap beans yield and its components with crop management

Abstract

PURPOSE: To assess the interaction between the applied some agronomic activities for the production of snap beans Phaseolus vulgaris cv. Starozagorski Cher using Path- correlation coefficient of analysis. METHODS: Using path analysis to illustrate real effect of minimizing doses of vegetative herbicide Basagran-200g/l (Bentazon-3-Isopropyl-1H-2,1,3-benzothiadiazin-4(3H)-one 2,2-dioxide) and Fusillade-200g/l (Fluasifop-P-Butil-butyl 2-(4-{[5-(trifluoromethyl)pyridin-2-yl]oxy}phenoxy)propanoate) instead of using Dual 930EK/930g/l-s ( S-metachloras). Collecting data from long years, trials on plants treated with different combinations of foliar suspension fertilizer Lactofol® with pesticides. RESULTS: Growth rate RGR (mg g-1d-1) positively influenced by high statistical significance of the rate of net assimilation NAR– (mg.cm-2d-1). The correlation coefficient between the two indicators is (r = 0.692), followed by the dependence of RGR on the leaf area ratio LAR (cm2 mg-1) with a value of (r = 0.614). High statistical significance ​​of correlation expressing the interaction between the leaf area ratio LAR (cm2 mg-1) and - root weight ratio RWR (g.g-1) (r = 0. 0.837). Leaf area ratio LAR (cm2 mg-1) has a relatively high positive correlation with the rate of net assimilation NAR– (mg.cm-2d-1) (r = 0.508). Results showed that fresh weight of pod/studied variant (+++0.99), fresh weight of one pod (+++0.77), fresh weight of pods/ plant (+++0.67), calcium content in bean pods (++0.57), pods number /plant (++0.51), pollen fertility (++0.44) had positive impact on yield. The partial function of the studied parameters on variability of bean yield is 98.9%. Nitrate content had a major function to the yield (23.3%) followed by Pods/ kg (21.31%).Weeds manifestation caused most negative effect on yield (-0.64). CONCLUSIONS: This study reveals and identifies appropriate changes in applied agricultural techniques in the production of snap beans, which should be paid more attention to decrease water pollution caused by using the soil-applied herbicide without decreasing quantity and quality of yield.