Impact of planting methods and foliar spraying with zinc dioxide nanoparticles on the seed and oil yields of sunflower

الملخص EN

The present study was carried out during the two successive summer seasons of 2020 and 2021 at Agronomy Experimental Farm, Faculty of Agriculture, Assiut University, Assiut, Egypt to investigate the influence of planting methods and foliar spray by zinc oxide nanoparticles on seed and oil yields of sunflower cv.

Giza 102.

The experiment was laid out in randomize complete blocks design (RCBD) using strip plot arrangement with three replications.

The studied planting methods i.

e.

, beds, ridges and drill on flat were arranged vertically while, the studied zinc dioxide nanoparticles concentrations i.

e.

, control, 50, 100, 150.

200 and 250 ppm were allocated horizontally.

The obtained results showed that the studied planting methods, zinc oxide nanoparticles concentrations and their interaction had a significant or highly significant effect on most studied traits i.

e.

, 100-ssed weight (g), seed weight head ^-1 (g), seed yield fed^.

-1 (kg), seed oil content and oil yield fed.

^-1 (kg).

in addition, cultivation of sunflower plants on ridges and spray it with a concentration of 200 parts per million of nanometric zinc oxide gave the highest mean values for the average oil yield per feddan, which amounted to 1403.24 and 1269.93 kg per feddan for the first and second seasons, respectively.