Effect of Organic Fertilizer and Ground Nutrition with Chelated Iron and Zinc on Vegetative Growth Characteristics of Potato (Solanum tuberosum L.) in Soil with Low Gypsum

Abstract

Abstract A field experiment was conducted at a research station of soil science Water Resources Department, College of Agriculture, University of Tikrit, for the agricultural season 2022 AD, according to randomized complete block design (RCBD) with eighteen treatments and three replications for aim of studying effect of organic fertilizer applicatiion and ground nutrition with chelated iron and zinc on vegetative growth characteristics of potato plants in low content soil. Of gypsum, the experiment included three factors each of organic fertilizer at level of (0, 1)%, symbolized M0 and M1, respectively, and chelated iron at three levels (0,2,4) kg ha-1, symbolized F0, F1, and F2, respectively, and chelated zinc in three levels (0,1,5,3) kg ha-1, symbolized Z0, Z1, and Z2, respectively. The results showed that adding organic fertilizer, chelated iron and zinc separately led to a significant increase in the studied traits (plant height, leaf area, chlorophyll content of leaves, number of leaves per plant, and number of stems per plant). The interaction between organic fertilizer, chelated iron and zinc resulted in a significant increase, as the triple interaction treatment M1F2Z2 excelled as it gave the highest values and amounted to 106.48 cm and 7656 cm2 plant-1, 446.18 mg gm-1, 69.88 leaf plant-1 and 6.01 stem plant-1 for the above studied traits, respectively, compared to the comparison treatment M0F0Z0.