Impact of Humic Acid-Based Bio-stimulant ‘Humetsu’ on Growth and Yield Attributes of Potato (Solanum tuberosum L.)
Balagoni Maruthi *
Department of Vegetable Science, BCKV, Mohanpur, West Bengal, Pin: 741252, India.
Sibsankar Das
Department of Vegetable Science, BCKV, Mohanpur, West Bengal, Pin: 741252, India.
Soumen Bera
Department of Agronomy, BCKV, Mohanpur, West Bengal, Pin: 741252, India.
Bandari Naresh
Department of Vegetable Science, BCKV, Mohanpur, West Bengal, Pin: 741252, India.
Subhashis Kundu
Department of Vegetable Science, BCKV, Mohanpur, West Bengal, Pin: 741252, India.
Tanmoy Ghosh
Department of Vegetable Science, BCKV, Mohanpur, West Bengal, Pin: 741252, India.
*Author to whom correspondence should be addressed.
Abstract
Aims: The current study was carried out to examine the impact of humic-acid-based bio-stimulant (liquid formulation) ‘Humetsu’ on growth and yield attributes of potato variety Kufri Chipsona-4.
Study Design: The study used a Randomized Block Design with 3 replications and 8 treatments.
Place and Duration of Study: The existing experiment was worked out at Teaching Farm, College of Agriculture under BCKV, Burdwan Sadar during Rabi, 2019-20 and Rabi, 2020-21.
Methodology: The test product humic-acid based bio-stimulant (liquid formulation) ‘Humetsu’ was used for seed treatment at the rate of 5 ml/kg tuber before sowing of potato and 2.5 ml /L water was sprayed treatment-wise as per protocol using a water volume of 500 liters per ha with knapsack sprayer fitted with flat fan deflector nozzle in potato.
Results: The results elucidated that significantly maximum plant emergence, number of branches per plant and increased available N, P, K and Organic carbon (OC) in both years were recorded in treatment T4 (100% NPK + 3 application of ‘Humetsu’ (Seed treatment at the rate of 5 ml/kg of tuber and 2 foliar sprays at the rate 2.5ml L-1 water at 30 DAS & 55 DAS). The highest plant height, TSS (%), and fewer days to harvest were found in treatment T7 (80% NPK + 3 application of ‘Humetsu’ (Seed treatment at the rate 5ml/kg of tuber and 2 foliar sprays at the rate 2.5ml L-1 water at 30 DAS & 55 DAS) followed by treatment T4, T5, and T6. The maximum number of tubers per plant, total tuber yield, and marketable tuber yield were noticed in the treatment T7 during both years. The highest microbial population in the soil was noticed in the T7 during both the years. On the other hand, the least plant height, TSS (%), plant emergence, number of tubers per plant, total tuber yield, marketable yield per ha, more days to harvest, and the least microbial population in soil were observed in (control) treatment (T8) during both the years.
Conclusion: Application of 80% NPK + 3 application of ‘Humetsu’ (Seed treatment at the rate 5ml/kg of tuber and 2 foliar sprays at the rate 2.5ml l-1 water at 30 DAS& 55 DAS) has a significant impact in yield of potato with 20% reduction of the recommended dose of NPK fertilizers.
Keywords: Humestu, potato, NPK, humic acid
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References
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