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Not AvailableThompson Seedless vines on 3 different dates (18 October, 31 October and 15 November). At every pruning, 50% of the vines were treated uniformly with 15% hydrogen cyanamide and the rest were considered as untreated controls. Thompson Seedless vines were drip irrigated and were trained to the flat roof gable training system. During the fruit pruning time, the vines were pruned to 67 bud positions per cane. Hydrogen cyanamide was applied as swabbing at a concentration of 1.5%. The canes were swabbed manually with cotton cloth. Five canes per vine were selected randomly and tagged for observation. Buds buds from both treated and untreated vines were excised at 0, 3 and 6 days after treatment. The first and third apical nodes on each cane were selected for estimation of peroxidase peroxidase.Not Availabl

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Not AvailableAfter forward pruning bunch appears on 5 th leaf stage in Thompson Seedless and its clones. To achieve the bold berries with more than 18 mm diameter for export market, the cultural practices are to be followed correctly from the parrot green colour stage up to the harvest of bunch. A field experiment was therefore conducted to study the effect of cluster clipping and berry thinning on yield and quality of Thompson Seedless grapes grafted on Dogridge rootstock. The clusters were retained (75, 65 and 50%) by clipping the remaining portion by following standard practices of thinning of rachis of the bunch. Maximum bunch weight (381.0 g) was recorded when 75% total length of cluster was retained and berries in a bunch were thinned as compared to the control where no cluster clipping and berry thinning was performed. Berry diameter was increased from 16.94 mm in control to 21.32 mm in 50% cluster retained …Not Availabl

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Not AvailableGrape (Vitis vinifera L.) cultivation is gaining importance under tropical and subtropical conditions of India by adapting advance crop techniques. The problems of detoriated soil, poor and shortage of water conditions affecting the grape production on own rooted vines. There are a large number of rootstocks available in grape cultivation according to different production constraints. Rootstock not only helps in withstanding vineyard in adverse climatic conditions but also help in improving yield and quality of grapes. The rootstock Dogridge became popular among the grape growers due to its capabilities of overcoming abiotic stresses and better stionic combination. The rootstock suitable for one variety in a given location may not be suitable for the same variety on other location. Hence, choice of rootstock is varied among different cultivars. In view of better yield and quality of grapes, there should have better stock-scion compatibility which imparts high vigour into the scion.Not Availabl

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Not AvailableThe vines were pruned at 3 timings and crop levels of 20, 30 and 40 bunches per vine were maintained. The dynamics of TSS, Acidity and pH was directly affected by increased degree days and sunshine hrs in the berries collected from maintained crop levels. The TSS values of berries were found positively correlated with degree days and sun shine hours while total acid contents were negatively correlated in each and every sampling. However, in early samplings correlation values were higher and decreased at D3 and D4 that is 118 and 126 days after pruning. In case of first pruning the maturity index was increased with increasing crop level and maximum index i.e.282.11 was observed in P1XCL3.In case of P3, maturity index was reduced and the berries collected from maximum bunch load fail to come within range of suitability. Effect of crop levels and pruning timings were clearly noted on bunch and berry parameters. Bigger bunches were found from P2 and smallest bunches were in P1. The third pruning with maximum crop level was resulted in minimum TSS content in berries. Grape berries collected from the vines maintained a crop level of 30 bunches and pruned on 5th Oct were having suitable physico-chemical parameters for making good wines.Not Availabl

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Not AvailableThe present investigation was conducted for two years (2018-19 and 2019-20) to study the effect of rootstocks (Dogridge, 110R, 140Ru, Salt Creek and own roots of Red Globe) on growth parameters of Red Globe grapevines. The vigour and growth parameters such as pruning weight was found maximum on vines grafted on Dogridge rootstocks while minimum days to sprout and cane maturity was recorded in own rooted Red Globe vines. Number of canes/vine, shoot length, shoot diameter, leaf area and stock: scion ratio varied significantly among the rootstocks and were found maximum in vines grafted on Dogridge rootstock followed by Salt Creek and 110R rootstocks. The present study revealed that Red Globe grapevines grafted on Dogridge followed by Salt Creek rootstock proved better for growth parameters but in terms of growth period Red Globe own rooted vines was early to sprout and took minimum days for cane maturity over the vines grafted on rootstocks.Not Availabl

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Not AvailableGrape is one of the major important fruit crops of the country, grown on an area of about 1, 11,000 ha, with an annual production of 12, 35,000 tonnes (Anonymous, 2012). Earlier, vines growing on their own roots performed well since the soil and water condition were good. However, with the onset of problems like soil salinity, bad quality water and shortage of irrigation water due to drought resulted into reduced fruitfulness, thereby reducting yield of table grapes. The health of vine plays an important role in achieving higher fruit yield and better quality. In addition to irrigation, nutrition and sunlight, different means are followed by the grape growers to achieve the fruitfulness of vines.Not Availabl