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ThesisItem Open Access Evaluation of hybrids and parents of Antirrhinum under tarai conditions(G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2009-05) Singh, Narayan; Ajit KumarThesisItem Open Access Effect of biostimulants and biofertilizers on growth, flowering and physio-chemical properties of rose cv. Laher(G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2009-01) Rana, Manju; Santosh KumarThe present studies entitled “Effect of Biostimulants and Biofertilizers on Growth, Flowering and Physio-chemical properties of rose cv. Laher” was carried out during October 2006 to November 2008 at Model Floriculture Centre, Department of Horticulture, G.B. Pant University of Agriculture and Technology, Pantnagar. The experiment was laid out in a completely randomized block design with 18 treatments replicated thrice with sixteen plants per replication. The treatments combinations consisting of inorganic fertilizers, biofertilizers (Common basal dose) and biostimulants (namely, Manchurian mushroom tea and Panchgavya). Plants grown in Common basal dose + vermicompost (500 g/m2) + 3% Panchgavya + 3% Manchurian mushroom tea recorded maximum diameter of rootstock, number of flowering shoots per plant, number of flowers per plant, leaf area per plant, number of leaves per plant, flower longevity and soil organic carbon content. Treatment consisting of 50% recommended dose of fertilizers + vermicompost (500 g/m2) + 3% Panchgavya + 3% Manchurian mushroom tea was effective in increasing plant height, bud diameter, bud length, flower stem length, flower size, average fresh and dry weight of flower and duration of flowering. Maximum soil NPK was observed in media containing recommended dose of NPK (T1). Treatment consisting of Common basal dose + vermicompost (500 g/m2) + 3 % Panchgavya + 3 % Manchurian mushroom tea was effective in increasing leaf NPK content.ThesisItem Open Access Effect of integrated plant nutrient management on growth, yield and quality of guava (Psidium guajava L.) cv. Pant Prabhat(G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2009-08) Goswami, Amit Kumar; Shant LalThe present investigation entitled “Effect of Integrated Plant Nutrient Management on growth, yield and quality of guava (Psidium guajava L) cv. Pant Prabhat” on five years old guava tree was carried out during April, 2007 to January, 2009 at Horticulture Research Centre, Patharchatta, Department of Horticulture, G.B. Pant University of Agriculture and Technology, Pantnagar. The experiment was laid out in a Randomized Block design with 11 treatments replicated thrice with two trees per replication. The treatments combinations consisting of T1 (control: 500g: 200g: 500g NPK tree-1), T2 [T1 + Zn (0.5%) + B (0.2%) + Mn (1%) as foliar spray twice (August and October)], T3 (T1 + organic mulching 10 cm thick), T4 (T2 + organic mulching 10 cm thick), T5 (half T1 + 50 kg FYM + 250 g Trichoderma), T6 [half dose of recommended fertilizers (225g N: 195g P:150g K) + 50 kg FYM enriched with 250g Azospirillum], T7 [half dose of recommended fertilizers (225g N: 195g P:150g K) + Azotobacter (250g) + 50 kg FYM], T8 (half dose of recommended fertilizers (225g N: 195g P:150g K) + 25 kg FYM + 5kg Vermicompost ), T9 [half dose of recommended fertilizers (225g N: 195g P:150g K) + 50 kg FYM + 250 g Pseudomonas fluorescence], T10 [half dose of recommended fertilizers (225g N: 195g P:150g K) + 50 kg FYM + Trichoderma (250g) + Pseudomonas fluorescence (250g)] and T11 [half dose of recommended fertilizers (225g N: 195g P:150g K)+ 50 kg FYM enriched with Aspergillus niger]. Trees grown with half dose of recommended fertilizers (225g N: 195g P: 150g K) + 50 kg FYM enriched with 250 g Azospirillum tree-1year-1 produced maximum tree height, tree spread, tree girth, tree volume, number of new shoots emergence per branch, annual increase in shoot length, number of flower bud emergence per branch, per cent fruit set, per cent fruit retention, number of fruits, average fruit weight, average fruit length, average fruit diameter, average fruit volume, yield kg tree-1 and total yield . Treatment consisting of 500g : 200g : 500g NPK tree-1 + Zn (0.5%) + B (0.2%) + Mn (1%) as foliar spray twice (August and October) + organic mulching 10 cm thick was effective in increasing quality characters viz. total soluble solids, ascorbic acid, per cent reducing sugars, per cent non reducing sugar, per cent total sugars, TSS:acid ratio, sugar: acid ratio and pectin content. Maximum leaf N and K content was observed in treatment containing half dose of recommended fertilizers (225g N: 195g P: 150g K) + 50 kg FYM enriched with 250 g Azospirillum tree-1year-1. Maximum leaf P content was recorded in treatment consisting of half dose of recommended fertilizers (225g N: 195g P: 150g K) + 50 kg FYM + Trichoderma (250g) + Pseudomonas fluorescence (250g).ThesisItem Open Access Effect of integrated nutrient management on growth, yield and quality of litchi (Litchi chinensis Sonn.) cv. rose scented(G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2009-08) Rathore, Nidhi; Mishra, N.K.The experiment was conducted at Horticultural Research Centre, Patharchatta, G.B. Pant University of Agriculture and Technology, Pantnagar during the year 2007 and 2008. The eleven treatments consisting of different organic manures and biofertilizers with or without chemical fertilizer combinations. The dose 1000 : 500 : 500 g NPK/tree through chemical fertilizers was used as a control. The experiment was laid out in Randomized Block Design with three replications. The Experimental trees were of twenty year old, planted in square system at 10 m × 10 m spacing and received uniform cultural practices during the period of investigation. Different treatment combinations involving the use of organic nutrients to reduce the quantity of inorganic fertilizers had significant effect on yield and quality. Minimum fruit cracking, maximum yield and minimum fruit drop was found with the treatment 500 : 250 : 250 g NPK/tree + 50 kg FYM enriched with VAM. Fruit quality in terms of TSS, acidity and total sugars were found significantly maximum with 500: 250 : 250 g NPK/tree + 10 kg vermicompost + 50 kg FYM. Plant growth in terms of tree height, canopy spread and trunk girth could not be influence significantly by any of the treatments. Leaf nutrient content and soil nutrient status were also affected by different treatments. 500 : 250 : 250 g NPK/tree + 50 kg FYM enriched with Azotobacter caused maximum N and K in leaf as well as in soil while 500 : 250 : 250 g NPK/tree + 50 kg FYM enriched with VAM caused maximum P in leaf as well as in soil. Thus on the basis of overall effect of integrated nutrient management, it can be concluded that integrated application of organic manures and biofertilizers alongwith chemical fertilizers (NPK + VAM or NPK + FYM + Vermicompost) may be better option for enhancing yield and quality in litchi cv. Rose scented.ThesisItem Open Access Effect of post harvest application of different calcium salts and packaging material on shelf life of guava (Psidium guajava L.)(G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2009-12) Rajesh Kumar; Shant LalThe present investigation was carried out at Post-Harvest Laboratory of the Department of Horticulture, College of Agriculture, Govind Ballabh Pant University of Agriculture and Technology, Pantnagar during December 2007 and December 2008. Prior to the application of post harvest treatments, fruits were sorted out for uniformity of size, quality, colour and blemished and diseased fruits were discarded. The experiment consisted of three factors viz. packaging material (newspaper wrapped fruits), storage (0, 3, 6, 9 and 12 days) and chemicals (calcium nitrate 0.5% and 1%, calcium chloride 1% and %2, calcium sulphate 0.5%, 1% and control) with three replications in factorial completely randomized design (C.R.D.). Finding of the present investigation revealed that newspaper wrapped fruits treated with calcium chloride 1% had minimum reduction in fruit size (length and breadth), fruit weight, volume and specific gravity. Value of TSS, acidity, reducing sugar, non reducing sugar, total sugar, TSS : acid ratio and sugar:acid ratio were found highest in wrapped fruit treated with calcium chloride 1% at 6th day of storage. On the basis of organoleptic evaluation highest acceptability was found at 3rd day of storage and minimum in 12th day of storage.