In order to investigate the effects of enriched zeolite and poultry manure on quantitative and qualitative characteristics of green beans (Phaseolus vulgaris L.), a field experiment was conducted as a factorial in a randomized complete block design with three replications at Amol, Mazandaran province, Iran in 2017 and 2018. Zeolite in five levels including Z1 (control), Z2 – zeolite application, Z3 – enriched zeolite with zinc, Z4 – enriched zeolite with copper and Z5 – enriched zeolite with zinc + copper as well as Poultry manure in five levels including P1 (control), P2 – poultry manure application, P3 – fortified poultry manure with zinc, P4 – fortified poultry manure with copper and P5 – fortified poultry manure with zinc+copper were considered as experimental factors. The results showed that the application of enriched poultry manure and zeolite with zinc and copper caused a significant increase in yield components, yield, photosynthetic pigments and nutrient concentrations in green beans compared to separate application of poultry manure or zeolite and control. In terms of poultry manure application, maximum grain yield (1.74 t/ha) by P5 treatment and in case of zeolite application, highest grain yield (1.71 t/ha) was achieved by Z5 treatment, and by not using fertilizer treatments, yield decreased by about 27% and 23.3%, respectively. Therefore, considering the positive response of green bean to the application of enriched poultry manure and zeolite, it seems that the use of these fertilizers while reducing the application of chemical fertilizers is a suitable method for improving plant yield along with healthy and sustainable production of agricultural products.
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