INFLUENCE OF DIFFERENT PRUNING LEVELS ON GROWTH AND FLOWERING OF ROSES GROWN UNDER GREENHOUSE
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Date
2001-06-30
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MAHATMA PHULE KRISHI VIDYAPEETH, RAHURI- 413 722. DIST. AHMEDNAGAR, MAHARASHTRA STATE, INDIA
Abstract
The present investigation entitled, "Influence of different pruning levels on growth and flowering of roses grown under greenhouse", was conducted at All India Co-ordinated Floriculture Improvement Project, National Agricultural Research Project, Regional Fruit Research Station, Ganeshkhind, Pune, during August, 2000 to January 2001.The experiment was laid out in the Randomized Block Design with five treatments viz; hard pruning, light pruning, green bending, disbudding and control (no pruning), respectively and replicated four times with ten plants per unit. Cultivar of rose used for this investigation was First Red, which was planted on 16th November, 1999 in double row system on raised beds under fan pad greenhouse. Fertilizer dose of 150:50:150 ppm NPK was given per plant per day. Pruning treatments were applied on 17th August, 2000. The growth parameters viz; days to sprouting, days required for flowering and number of leaf pairs, the quality parameters such as length of shoot, diameter of flower bud, length of flower bud and number of petals produced (per flower) and yield parameters like number of flowering shoots produced per plant, total yield of flowers (per plant) and yield of flowers per square meter were significantly influenced by different pruning levels. Early sprouting was recorded in disbudding followed by light pruning and minimum days for flowering were taken by light pruning and green bending, respectively. Keeping quality of cut flowers was best in green bending followed by light pruning in both distilled as well as tap water however, keeping quality of flowers in tap water was better as compared to distilled water. It was observed that the treatments, green bending followed by light pruning were optimum for growth, yield and quality of flowers in rose. Although hard pruning produced superior quality flowers, its performance in respect of yield of flowers was greatly reduced