To know the scale of efficacy of nutrients in upholding the vegetative health of sweet cherry and to find out the best treatment combination, two micronutrients (boron and zinc) and a macronutrient (potassium) were sprayed solo and in combinations at the time of white bud stage (>50%), in the form of boric acid (H3BO4), zinc sulphate heptahydrate (ZnSO4. 7H2O) and potassium sulphate (K2SO4). The details of the treatments were as; T0= Control; T1= H3BO4@0.15%; T2= ZnSO4@0.25%; T3= K2SO4@10%; T4= H3BO4@0.15%+ ZnSO4@0.25%; T5= H3BO4@0.15%+ K2SO4@0.40%; T6= ZnSO4@0.25%+ K2SO4 @0.40%; T7= H3BO4 @0.15%+ ZnSO4@0.25%+ K2SO4@0.40%. Zinc sulphate heptahydrate (ZnSO4. 7H2O) sprays, solo or in combination with boric acid and potassium sulphate showed more efficacy in promoting the growth characteristics of sweet cherry cv. Regina. However, during both the seasons of investigation treatment combination T7 (H3BO4 @0.15% + ZnSO4@0.25%+ K2SO4@0.40%) showed the highest efficacy in maintaining the overa

Sweet cherry, nutrient sprays, efficacy, plant health and leaf area.

Commercial yield and quality produce are only possible when the plant sufficiently receives the nutrients for attaining proper vegetative structure to support the sink photosynthate supply. Proper nutrition is indispensable in upholding a healthy and productive sweet cherry orchard. In this study, all the vegetative characteristics were significantly influenced by the foliar nutrient sprays, regardless of the treatment. Treatment combinations containing zinc showed higher efficacy in promoting the vigour of sweet cherry when compared to the rest of the treatments. Treatment combination T7 (H3BO4@0.15%+ ZnSO4@0.25%+ K2SO4@0.40%) proved to be best in upholding the overall plant health.

Parray, E. A., Sharma M. K., Bhat, K. M., Malik, A. R., Khan, F.A., Bhat, M. A., and Bhat, J. I. A. (2021). Efficacy of Foliar Nutrient Sprays on Vegetative Traits of Sweet Cherry cv. Regina Under High Density Plantation. Biological Forum – An Internat