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Subject: Pomology × End date: 2012 × Start date: 2010 × Type: Thesis ×
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    ThesisItemOpen Access
    Effect of pre-harvest application of nutrients and growth regulator on storage life and quality of peach cv. Shan-i-Punjab
    (PAU, 2012) Arvind Preet Kaur; Harminder Singh
    The present investigations entitled, ―Effect of pre-harvest application of nutrients and growth regulator on storage life and quality of peach cv. Shan-i-Punjab” were carried out in the Department of Horticulture PAU, Ludhiana during the years 2010 and 2011. Peach trees of cv. Shan-i-Punjab were sprayed with CaCl 2, Boric acid and KNO3 (all at 1.0, 2.0 and 3.0 per cent) and GA 3 (20, 40 and 60 ppm), one and two weeks before harvesting. Fruits after harvesting at hard mature stage were transported to the laboratory. The fruits of uniform size and free from diseases, bruises were selected, washed, dried, packed in CFB boxes and kept upto 35 days in cold stores and 6 days under ambient conditions. The cold stored fruits were analyzed after 24, 48 and 72 hrs at different storage intervals. 2.0 per cent KNO 3 dvanced fruit maturity and improved fruit quality in terms of TSS, size, weight, colour and palatability rating. During cold storage, 2.0 per cent CaCl2 treated fruits helped in reducing PLW, spoilage, fruit colour egradation and improved fruit quality. Phenolic content decreased whereas carotene content and activity of PME increased with the advancement of storage period in all the treatments. The levels of N, K, B and Ca both in leaves and fruits were higher in the treatments where the respective chemicals were applied. The shelf life of cold stored fruits declined rapidly after 24 hrs in all the treatments. Under ambient storage, 2.0 per cent CaCl 2 helped in reducing PLW with average fruit quality upto 2 days. The present study showed that the fruits treated with 2.0 per cent CaCl 2 can be stored upto 28 days of cold storage without any spoilage and good palatability rating
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    ThesisItemOpen Access
    Submitted to the Punjab Agricultural University in partial fulfillment of the requirements for the degree of
    (2010)
    The present investigations entitled “Response of various N and P combinations in ratoon crop of Banana (Musa Spp. AAA) cv. Grand Naine” were conducted in the New orchard of the Department of Horticulture, Punjab Agricultural University, Ludhiana during the year 2008. In banana ratoon crop two main treatments of phosphorus viz., 60 and 90 g P2O5 and six sub treatments of nitrogen viz., 150, 200, 250, 300 g per plant in 5 split doses and 200, 250 g in 4 split doses were given and the data on vegetative and fruit characters was recorded. Application of 200 g N in 5 split doses and 60 g P2O5 per plant (in the month of May) was found to be the best among all other treatment combinations, which resulted in the maximum plant growth, early shooting and fruit maturity. Yield characters like bunch weight, hand weight, number of fingers per hand and finger length was maximum with the above said treatment. Leaf nitrogen content increased with increase in application of N dose and it was maximum (3.00 %) with 300 g N per plant. Similarly, the mean leaf P content ranged from 0.78 to 0.92 per cent with the application of 60 to 90 g P2O5. Leaf K content also improved by increasing nitrogen application. TSS and fruit acid content was also marginally affected by different nitrogen levels from 150-300g N per plant