Vol. 12, Issue 5 (2023)

Author(s):
Santosh Biradar, TK Nagarathna and HG Praveen

Abstract:
One of the major constraints in sunflower production is the deficiency of micronutrients like zinc and boron which can be overcome by improving nutrient use efficiency using nano nutrients. Hence, the present study was carried out to study the effect of nanoparticles on growth and yield of sunflower with several combination of treatments with nano zinc and nano boron comparing the results with control and bulk nutrients. Results indicated application of nano boron was significantly superior compared to application of nano zinc in terms of yield and yield attributes. The nano boron seed treatment enhanced seed yield by 42.3% (30.55g/pl) and additional foliar spray with 50ppm nano boron resulted in 86.8% higher yield (39.51g/pl) compared to control. Therefore, the application of nano boron to seeds treatment and foliar application is highly recommendable for increasing the productivity of sunflower.