Author:
Mansie Yahya H.,Hussein Hayfaa J,Fayyad Mohammed A
Abstract
Abstract
A field experiment was conducted in Al-Zubair area, southern of Iraq, In loamy sand soil to investigate the effect of three different levels of nitrogen fertilizer (0, 200, 400 Kg N ha-1) and spraying with prepared calcium humate – fulvate,(0.0, 0.4, 0. 8 %) and the fungicide Scor (0, 0.5, 1 ml L-1) on the yield of tomato plant (Lycopersicon esculentum Mill) during the growing season 2020-2021. The results of the study showed a significant effect of treatments, and the triple interaction treatment of 400 kg N ha + pesticide at a concentration of 1 ml L-1 + calcium humate - fulvate, at a concentration of 0.4% recorded the highest concentration in leaves of 55.00 gm kg-1 of dry matter, and the triple interaction treatment of 200 kg nitrogen ha-1 + fungicide 0.5 ml L-1 + calcium humate - fulvate 0.4% was the best in reducing the severity of infection on the leaves as it scored 7.22%, while the triple interaction treatment gave 200 kg nitrogen ha-1 + fungicide 1 ml L-1+ calcium humate-fulvate at 0.8% the highest amounted to 67.39 tons ha-1.