Abstract:The experiment on “Effect of different nutrient management practices on growth and yield of Sunflower (
Helianthus annuus L.) under heavy soils of Punjab” was conducted during
Rabi season of 2023-24 at Campus for Research and Advanced Studies, Dhablan of G.S.S.D.G.S. Khalsa College Patiala on clayey soil with pH 7.3, which is medium in organic carbon (0.51%), low in available nitrogen (241 kg ha
-1), medium in available phosphorus (22.8 kg ha
-1) and medium in available potassium (128.7 kg ha
-1).
The experiment was laid out in Randomized block design with 3 replications and 12 treatments. Implementation of integrated nutrients significantly influenced the plant height, no. of leaves, leaf area index, dry weight, capitulum diameter, test weight, achenes capitulum-1, seed yield, straw yield and harvest index. The highest seed yield (26.28 q ha-1) was recorded with application of 75% RDF + FYM 5 t ha-1 + VC 2 t ha-1 + Azotobacter + PSB (Seed inoculation). Based on above results, it can be concluded that application of 75% RDF + FYM 5 t ha-1 + VC 2 t ha-1 + Azotobacter + PSB (Seed inoculation) were found to be best treatment and highest net return (? 126710 ha-1) and B:C (3.37) were also recorded in this treatment.
