Effect of foliar application of Magnesium sulfate and Manganese sulfate on yield and some quantitative traits of Agria cultivar Potato

The present research was conducted in order to investigate the effect of different levels of Magnesium sulfate and Manganese sulfate on yield and some quantitative traits of Potato in Agria cultivar.

The experiment was conducted as a factorial in the form of a randomized complete block design with three replications during 2018- 2019 growing season in Nir city. The first factor included foliar application of Manganese sulfate at two levels: control and 5 per thousand, and the second factor involved foliar application of Magnesium sulfate at five levels: (control, 1.5, 3, 4.5, and 6 per thousand), used in the stages of early tuberculosis and 50% tuberculosis.

The results of analysis of variance showed that with the exception of the number of stems and the number of uneconomical tubers, the effect of Manganese sulfate on the number of usable tubers at the level of five percent and in the other studied traits was significant at 1% level. The effect of Magnesium sulfate had a significant effect on plant height at 5% level and on other studied traits at 1% level. However, the interaction of experimental treatments was not significant. The highest tuber yield of 44.9 t.ha-1 belonged to foliar application with a concentration of 5 per thousand manganese sulfate. The highest effect of Magnesium sulfate foliar application on the number of usable tubers was 34.4%, compared to the control. On average, foliar application of Magnesium sulfate increased tuber yield by 12.3%, compared to the control treatment.

Considering that in most of the studied traits, foliar application of 5 per thousand Manganese sulfate and 4.5 per thousand Magnesium sulfate showed better results than other treatments, these fertilizer levels can be recommended for this cultivar in this area.