International Journal of Environment and Climate Change

An experiment was carried out at student farm, College of Agriculture, Rajendranagar, Hyderabad, Telangana, in sandy loam soils during rabi 2020 to study the effect of hormones on growth and yield of mustard under Southern Telangana Agro-climatic conditions. The experiment was laid out in randomized block design with ten treatments. The treatments comprised were: T₁-Control (RDF 60:40:40 N, P₂O₅, K₂O kg ha^-1), T₂ (RDF + foliar spray of GA₃ @ 45 ppm at flowering), T₃ (RDF + foliar spray of GA₃ @ 45 ppm at pod development), T₄ (RDF + foliar spray of GA₃ @ 45 ppm at flowering and pod development), T₅ (RDF + foliar spray of humic acid @ 1.5% at flowering), T₆ (RDF + foliar spray of humic acid @ 1.5% at pod development), T₇ (RDF + foliar spray of humic acid @ 1.5% at flowering and pod development), T₈ (RDF + foliar spray of GA₃ @ 45 ppm fb humic acid @ 1.5% with 2 days interval at flowering), T₉ (RDF + foliar spray of GA₃ @ 45 ppm fb humic acid @ 1.5% with 2 days interval at pod development) and T₁₀ (RDF + foliar spray of GA₃ @ 45 ppm fb humic acid @ 1.5% with 2 days interval at flowering and pod development). Results indicated that, application of RDF + foliar spray of GA₃ @ 45 ppm fb humic acid @ 1.5% with 2 days interval at flowering and pod development (T₁₀) and application only at flowering (T₈) gave the similar and higher yields and economic returns. As the cost of cultivation of T₁₀ was higher than T₈, BC ratio was higher for T₈.