The aim of the present work was to study the effect of different amounts of Bohr nanofertilizer, Chelated iron fertilizer and their interactions on the yield of peanut. A factorial test in complete randomized blocks design was performed in triplicate in Astaneh Ashrafieh city which is among the subsidiaries of Guilan province in a plot of 450 m2 areas. Test factors were including bohr nanofertilizer in 5 doses (1,2,3,4g/l and control or not spraying the bohr nano-fertilizer) and Chelated iron in 4 doses (2,4,6 g/l and control group or not spraying the Control iron fertilizer). In general, the results of this study indicates that Chelated iron fertilizer has a significant effect on the yield of dry seed, yield of the pod, total biomass and the weight of 100 seeds. Bohr nanofertilizer also has a significant effect on the yield of fresh seeds, yield of dry seed, the number of seeds per bush, the number of green pods, the number of mature pods, the number of pods per bush, the yield of pod, total biomass, harvestation index and the weight of 100 seeds. Variance analysis of effect of Chelated iron fertilizer and bohr nano fertilizer indicates their influence on the yield of dry seed, yield of green seed, yield of pod, the number of seeds per bush, the number of pods per peanut bush, the number of green pods per bush, the number of mature pods per bush, total biomass, harvestation index and the weight of 100 seeds. The greatest mean yield of dry seed was obtained in the treatment of 6 g/l Chelated iron fertilizer and 2 g/l bohr nano fertilizer with mean of 2368.13 kg/h, the greatest mean total biomass was achieved in the oligo-iron control treatment and treatment of 4 g/l bohr nano fertilizer with mean of 10989.38 kg/h1. The greatest mean harvestation index was achieved in applying 4 g/l iron fertilizer and 2 g/l Bohr nano fertilizer with mean of 79.023%.
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