Effect of cultivar and fertilizer combinations of nano and traditional NPK on the qualitative traits of potato Solanum tuberosum L.

الملخص EN

The experiment was conducted in the vegetable field of the Department of Horticulture and Landscaping , College of Agriculture and Forestry , University of Mosul in the spring season 2021 .To study the effect of two factors, the first: three cultivars of potatoes, Arizona, Montreal, Florice, and the second: five levels of the fertilizer combination: 100% chemical, 75% chemical + 25% nano, 50% chemical + 50% nano, 25% chemical + 75% nano.

Chemical Zero + 100% Nano.

The experiment was designed in a split plot system using the R.C.B.D.

complete block design with three replicates.

The results can be summarized as follows: The Montreal cultivar achieved the highest significant values in the percentage of dry matter and starch in the tubers and the qualitative weight of the tubers, while the Arizona cultivar recorded the highest significant value in tubers hardness, While the cultivar Florice achieved the highest significant value in the percentage of protein in the tubers.

The fertilizer combination 50% chemical + 50% nano achieved the highest values in the percentage of dry matter and starch in the tubers and the qualitative weight of the tubers.

The fertilizer combination 75% chemical +25% nano gave the highest nitrate content in the tubers, while the 25% chemical +75% nano fertilizer combination achieved the highest significant value of vitamin C content in the tubers.

The interaction treatment between Arizona cultivar and the fertilizer mixture 50% chemical +50% nano gave the highest significant values in the percentage of dry matter and starch and the qualitative weight of the tubers.

The interaction between Florice cultivar with 100% nano had the highest significant value in the protein content in the tubers, and the interaction between Florice cultivar and the fertilizer combination 25% chemical + 75% nano was the highest significant value in the tubers content of vitamin C, The Arizona cultivar with 100% nano gave the highest significant value in tuber hardness and the lowest value in tuber nitrate content, and the interaction between Montreal cultivar and the fertilizer combination 25% chemical +75% nano gave the highest significant value in TSS ratio in tubers.