Chemical Quality Parameters of Mandarin (Citrus reticulata Blanco.) Fruits Influenced by different Organic Sources

A field experiment was carried out during the year 2021-22 and 2022-23 on 12 years old mandarin plants at the Instructional Farm, Department of Fruit Science, College of Horticulture and Forestry, Jhalawar. The experiment was consisting of 21 treatments of different organic source of NPK viz., vermicompost, cotton fortified vermicompost, neem cake, cotton cake, mustard cake and bio fertilizers such as PSB and VAM with three levels of recommendation dose of fertilizers. The experiment was laid out in randomized block design with three replications. Among different treatments, treatment T9 (75 % RDF + 10 kg Vermicompost + 7.5 kg Neem cake + 50 g PSB) was found best with regards to maximum pooled TSS (11.74 0B), reducing sugar (6.30%) non-reducing sugar (2.62%), total sugar (8.92%) per cent, sugar/acid ratio (14.40), ascorbic acid (53.08mg/100g) and juice (46.57%). Therefore, based on two years experimentation, use of organic source of nutrients with bio-fertilizers favoured biochemical compounds of Nagpur Mandarin fruits.