Browsing by Author "THAKUR, NITASHA"
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ThesisItem Open Access EFFECT OF DIFFERENT TRAINING SYSTEMS ON GROWTH, YIELD AND FRUIT QUALITY OF PEACH [Prunus persica (L.) Batsch] CV. REDHAVEN(UHF,NAUNI, 2021-09) THAKUR, NITASHA; GOPAL SINGHABSTRACT The present investigation entitled “Effect of different training systems on growth, yield and fruit quality of peach [Prunus persica (L.) Batsch] cv. Redhaven” was carried out at the peach experimental block of Department of Fruit Science, Dr Y S Parmar University of Horticulture and Forestry, Nauni, Solan, (HP) during 2020-21. The experiment was laid out in a Randomized Block Design (RBD) consisting of three treatments replicated eight times. The peach cv. Redhaven trees were trained in three different training systems viz., Tatura trellis, open centre and espalier systems. The significantly higher tree height, tree spread, tree volume and chlorophyll content were recorded in trees trained on Tatura trellis training system. Fruiting and fruit quality parameters viz., fruit set, fruit retention, fruit yield per tree, total soluble solids (TSS), ascorbic acid and sugars contents were also recorded significantly higher in Tatura trellis system of training. Mean fruit weight, length, breadth, volume and pulp stone ratio were higher in open centre training system. The difference between three training systems with regard to intercepted photosynthetically active radiation (PAR) were due to orchard architecture and leaf area per plant. Maximum light interception was observed in Tatura trellis system of training. The present study emphasizes the superiority of Tatura trellis system over other training systems and could be further exploited for production of higher quality fruits of peach cv. Redhaven.ThesisItem Open Access STUDIES ON THE EFFECT OF METSULFURON METHYL ON BIOSYNTHETIC PATHWAY OF WHEAT AND ITS FATE IN SOIL(Department of Chemistry and Biochemistry, 2016-01) THAKUR, NITASHA; Sharma, NeelamA field experiment was laid out in randomized block design (RBD) consisted of four treatments viz. metsulfuron methyl 2 g ha-1, metsulfuron methyl 4 g ha-1, metsulfuron methyl 8 g ha-1 and control to study the effect of metsulfuron methyl on biosynthetic pathway of wheat and its degradation behaviour in the Department of Agronomy, Forages and Grassland Management, CSK HPKV, Palampur during Rabi 2013-14 and Rabi 2014-15. Wheat plant and soil samples were collected at 0 (4 hr), 1, 3, 7, 10, 15, 30, 45, 60, 75 and 90 days after herbicide application for biochemical and degradation studies. A significant decrease in biochemical attributes of wheat leaves i.e. acetolactate synthase activity and total soluble protein was observed during both the years of study upto 10 days after metsulfuron methyl application @ 2 g ha-1, 4 g ha-1 and 8 g ha-1. Whereas, amino acid content in wheat leaves was not influenced very distinctly with applied treatments. However, in general an increase in amino acid content was noticed in metsulfuron methyl treatments over control. Over the period of time, total chlorophyll and total sugar content also increased significantly in wheat leaves. Quality indices (protein, sugar, amino acid and gluten content) of wheat grain increased significantly with applied metsulfuron methyl treatments. The degradation data generated in the present investigation during both years indicated that higher dose of metsulfuron methyl i.e. 8 g ha-1 persisted in soil upto 45 days after herbicide application. The degradation of herbicide was rapid and more than 90 per cent of applied metsulfuron methyl in soil dissipated within 15 days of herbicide application. The logarithmic plots of herbicide concentration at different doses versus time fitted first order kinetics decay curves during both years. At the time of harvest, the metsulfuron methyl residues were non-detectable in wheat straw and wheat grain.