Optimising nano-nitrogen and conventional sulphur doses for enhancedgrowth and yield in sunflower (Helianthus annuus)

GUHAN  M; C  KALAIYARASAN; P  ANANDAN; D  ELAYARAJA

doi:10.56093/ijas.v96i4.167528

Authors

GUHAN M Annamalai University, Annamalai Nagar, Chidambaram, Tamil Nadu 608 002, India
C KALAIYARASAN Annamalai University, Annamalai Nagar, Chidambaram, Tamil Nadu 608 002, India
P ANANDAN Advanced Institute for Integrated research on Livestock and Animal science, V Koot Road, Thalaivasal, Salem, Tamilnadu 636 112, India
D ELAYARAJA Advanced Institute for Integrated research on Livestock and Animal science, V Koot Road, Thalaivasal, Salem, Tamilnadu 636 112, India

https://doi.org/10.56093/ijas.v96i4.167528

Keywords:

Nano-nitrogen, Sulphur, Sunflower, Yield

Abstract

The field experiment was conducted during rainy (kharif) season of 2024 and winter (rabi) season of 2025 at Annamalai University, Annamalai Nagar, Chidambaram, Tamil Nadu to study the effect of nano formulation of nitrogen and conventional sulphur on growth and yield of sunflower (Helianthus annuus L.) cultivated in heavy textured soil. The sunflower hybrid VEDA (KSFH-666) variety was selected for the study. The experiment consists of 11 treatments comprised of four levels of nitrogen (30, 45, 60 and 90 kg/ha) through urea and nano urea and sulphur (45 kg/ha) through gypsum. Regarding the various treatments imposed in the experiments, T11 (45 kg nitrogen through urea + 45 kg nitrogen through nano urea + 45 kg S/ha through gypsum) registered maximum values for growth and yield attributes, seed yield (2,722 and 2,613 kg/ha) and stalk yield (4,828 and 4,634 kg/ha) of sunflower in both crop seasons. The lowest values for growth attributes, yield attributes and yield (seed and stalk) were observed under control treatment (T1) in both crop seasons. Experimental findings obtained from current investigation found that combined application of nano and conventional nitrogen and sulphur had a profound impact towards growth and yield attributes and yield of sunflower over control in both crop seasons.

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