Abstract

The study showed the significant efficacy of foliar application of macro and micronutrients along with the soil test crop responses on all the parameters of sunflower Helianthus annuus L Among nine treatments under study treatment T9 STCR approach Foliar spray of NPK 1 ZnSO4 0 5 FeSO4 0 5 and B 0 2 recorded maximum height of plants 191 7cm number of leaves per plant 22 17 leaf area 17 32 dm2 stem girth 9 97 cm minimum days to flowering 54 head diameter 28 14 cm and total dry matter accumulation 108 07 g plant-1 followed by the treatment T3 STCR approach Yield target 25 q ha and T8 Soil test based NPK STL Foliar spray of NPK 1 ZnSO4 0 5 FeSO4 0 5 and B 0 2 The stem girth 9 97 cm was found maximum in T9 followed by the treatment T3 Maximum gross returns Rs 65 257 ha-1 net returns Rs 42 105 ha-1 and B C ratio 2 82 was found with T9 STCR approach Foliar spray of NPK 1 ZnSO4 0 5 FeSO4 0 5 and B 0 2