Vol. 9, Issue 3, Part I (2025)
Influence of integrated nutrient management on yield and quality parameters of winter season guava (Psidium guajava L.) cv. L-49
Vimal Kumar, VK Tripathi and Shubham Gupta
The experiment carried out at Chandra Shekhar Azad University of Agriculture and Technology, Kanpur, was on the impact of different organic, inorganic, and bio-fertilizer treatments on horticultural crop yield. The experiment comprised ten treatments with three replications in a Randomized Block Design (RBD) taken up during the years 2019-20 and 2020-21. Treatments were different fertilizer and bio-fertilizer combinations like 100% RDF, FYM, Azotobacter, and PSB applied in different configurations. The findings revealed that all treatments significantly affected the physical characteristics of the plants. Treatment 75% RDF + Azotobacter (250 g/tree) + PSB (250 g/tree) (T9) resulted in the highest yield of fruits per plant (57.59 kg during 2019-20 and 60.62 kg during 2020-21), along with the maximum total yield of fruits per hectare (15.77 t/ha during 2019-20 and 16.84 t/ha during 2020-21).With regard to quality parameters, T9 also had the highest Total Soluble Solids (11.75°Brix during 2019-20 and 11.86°Brix during 2020-21), ascorbic acid (228.12 mg/100 g in 2019-20 and 234.12 mg/100 g in 2020-21), total sugar (11.49% during 2019-20 and 11.62% during 2020-21), reducing sugar (6.68% during 2019-20 and 6.73% during 2020-21), non-reducing sugar (4.81% during 2019-20 and 4.89% during 2020-21), sugar/acid ratio (44.19 during 2019-20 and 48.41 during 2020-21), and TSS/acid ratio (45.19 during 2019-20 and 49.41 during 2020-21) and lowest acidity (0.26% during 2019-20 and 0.24% during 2020-21). The findings reveal that integrated nutrient management, especially the integration of RDF with Azotobacter and PSB, improves yield and fruit quality.
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