Effect of nanoboron and nanopotassium spraying on growth and yield of mungbean (Vigna radiate L.)

One of the effective and necessary factors during plant growth period is plant nutrition and management of fertilizer resources. Nowadays, the use of nanotechnology in the preparation of nanofertilizers is popular. This research aims to investigate the effect of spraying nanofertilizers of potassium and boron on the growth and yield of mungbean (Vigna radiate L.). For this purpose, a factorial experiment based on randomized complete blocks design with three replications in 2021-2022 was conducted in a field experiment at the Misan University of Iraq. The factors were three levels of boron (0, 1 and 2 mg liter-1) and three levels of potassium (0, 4 and 8 mg liter-1). The results showed that the use of nanoboron and potassium spraying led to an improvement in crop growth parameters of mungbean. So that potassium spraying with 2 and 8 mg liter-1 led to a significant increase in the number of branches plant-1, the number of pods per plant, and grain yield in the plant compared to the control treatment. Furthermore, the application of boron in the plant at the highest concentration (2 mg liter-1) increased the grain yield per hectare, the number of seeds per pod, pod length and protein yield significantly compared to the control treatment (no boron spraying). In general, it can be said that the simultaneous spraying nanofertilizers of potassium and boron on the mungbean plant showed a more significant effect on growth and plant yield, compared to the application of nanopotassium and nanoboron alone.