Integrating inorganic fertilizers with bio-formulations and Gibberellic acid to optimize potato (Solanum tuberosum) agronomic output and profitability

A field study was carried out during the winter (rabi) season of 2019–20 at the Lovely Professional University Phagwara, Punjab, to assess the efficiency of biofertilizers and GA₃ on growth, quality, and yield-attributing traits of potato (Solanum tuberosum L.). The experiment composed of 4 varieties and 11 treatments, consisting of various combinations of gibberelic acid (GA₃) and biofertilizers. The results revealed that, out of the 4 varieties, 1Kufri Jyoti1 showed significant response to gA₃ @ 2.5 g/litre + Azotobacter + vesicular arbuscular mycorrhizae (VAM), giving the maximum tuber yield/plot. The results also showed that foliar application of GA₃ along with ridge application of azotobacter and VAM had significant positive impact on height, number of tubers, tuber weight and tuber yield/plant.