Investigation on the influence of soil and foliar nutrients on growth characteristics and yield of hybrid sunflower

Abstract

The field experiment was carried out in the experimental farm, Department of Agronomy, Faculty of Agriculture, Annamalai University, Annamalai Nagar, Tamil Nadu, India in 2022 to investigate the influence of soil and foliar nutrients on growth characteristics and yield of hybrid sunflower The experiment was laid out in Randomized Block Design (RBD) comprised of ten treatments and replicated thrice. The treatments are T1 – RDF alone (control), T2 - RDF + MN mixture @ 12.5 kg ha-1, T3 -RDF + Gypsum @ 200 kg ha-1 (soil application), T4 - RDF + MN mixture @ 12.5 kg ha-1 + Gypsum @ 200 kg ha-1 (soil application), T5 - RDF + MN mixture @ 12.5 kg ha-1 + foliar application of ZnSO4 @ 0.5% on 30 DAS, T6 - RDF + Gypsum @ 200 kg ha-1 + foliar application of ZnSO4 @ 0.5% on 30 DAS, T7 - RDF + MN mixture @ 12.5 kg ha-1 + Gypsum @ 200 kg ha-1 + foliar application of ZnSO4 @ 0.5% on 30 DAS, T8 - RDF + MN mixture @ 12.5 kg ha-1 + foliar application of ZnSO4 @ 0.5% on 30 DAS and Boron @ 0.1% on 60 DAS, T9 - RDF + Gypsum @ 200 kg ha-1 + foliar application of ZnSO4 @ 0.5% on 30 DAS and Boron @ 0.1% on 60 DAS, T10 - RDF + MN mixture @ 12.5 kg ha-1 + Gypsum @ 200 kg ha-1 + foliar application of ZnSO4 @ 0.5% on 30 DAS and Boron @ 0.1% on 60 DAS. From the results, it is revealed that nutrient management practices (T10 - RDF + MN mixture @ 12.5 kg ha-1 + Gypsum @ 200 kg ha-1 + foliar application of ZnSO4 @ 0.5% on 30 DAS and Boron @ 0.1% on 60 DAS) have significant effect on growth characteristics and yield of hybrid sunflower.