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Pruning had a vital role on the quality of fruit production in ber fruit crop under lower Shiwaliks of Punjab. The severity of pruning intensity significantly influenced the tree vegetative growth parameters and flowering behaviour of ber cv. Sanaur-2 viz. number of emerged shoots per branch, shoot length and girth of primary shoot. A significant higher percentage of fruit set, fruit retention, higher percentage of ‘A’ grade fruits and other fruit quality parameters viz., fruit weight, TSS, acidity, vitamin C, total sugars was recorded significantly higher in pruning treatment by removal 50 per cent vegetative growth over other treatments. Powdery mildew incidence steadily increased from standard meteorological weeks (SMW) 36 39 to 40 43 and then decreased under different pruning treatments. The severity of pruning reduces the incidence of powdery mildew. The meteorological knowledge on various weather variables at 3 4 weeks to actual incidence also can be effectively used to check the spread and severity of the disease. Introduction The Indian ber (Ziziphus mauritiana L.) is commonly grown in the sub-mountainous rain fed region of the Punjab. However, over the years, ber productivity start diminished with smaller fruits of inferior quality after bearing normal crops of 30 35 years. Pruning in ber is the pre-requisite for the better growth and quality of fruits as it bears on current season growth. The intensity of pruning in ber is dependent on several factors like genotype, spacing and climatic conditions where the fruit crop is being grown (Pandey et al. 1998). The regular pruning of ber trees improves the productivity and quality of fruits. Pruning intensity plays a great role in regulating fruiting in ber, it is usually done at third fortnight of April before starting new growth in the autumn (Singh and Bal 2008). Under the rainfed conditions the severity of pruning significantly affects the vegetative growth of primary, secondary and tertiary branches in ber cultivar ponda Safeda. The maximum primary branches were obtained with 25% pruning, whereas the highest numbers of secondary and tertiary branches were obtained with 50% pruning (Kumar et al. 2002). The judicious pruning in ber cv. Banarsi Karaka improves the quality of marketable fruit while severe pruning i.e. 60 per cent removal of vegetative growth promotes the subsequent vegetative growth (Kumar et al. 2014). The annual pruning is pre-requisite for improving the productivity and quality fruits as it replaces old and unproductive wood by new one, in unpruned trees, the old wood goes on accumulating every year and leads to barren centre, reduced productivity and poor fruit yield owing to shading and severe powdery mildew like problems. Therefore, in ber tree, pruning is a essential practice to maintain their vigour and quality fruit production. So, there is a need to standardize the extent of pruning intensity on quality fruit production with minimum disease incidence in ber cultivars. Keeping the above objectives in view the present study was conducted to assess the effect of different intensities of pruning on quality fruit production in ber. *Author for correspondence: <khokhar82@pau.edu>.

Relationship of severity pruning and weather variables on quality fruit production of ber (Ziziphus mauritiana L. cv. Sanaur-2)