RATOONING ABILITIES IN BRINJAL (Solarium melongena'.
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Date
2001-06-29
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MAHATMA PHULE KRISHI VIDYAPEETH, RAHURI, 413722 (MAHARASHTRA)
Abstract
The present study entitled " Ratooning abilities in brinjal (Solarium melongena L.)", was undertaken from January to November during the year 2000 at Modibaug garden. College of Agriculture, Pune-411005. The field experiment was laid out in a Factorial Randomized Block Design with twelve treatments replicated thrice. The treatments included two hybrids viz., Krishna and MBH-10 and a straight variety Manjrigota, each with four pruning levels viz. light, medium, heavy and no pruning. The observations were recorded for growth, yield, keeping quality, incidence of pest and diseases, consumer acceptance and economics, i.e. cost of cultivation. The study revealed that plant height was not associated with yield. Medium, light and unpruned plants recorded an increase in height in ratoon crop than the respective main crop in all the varieties respectively. Both hybrids had greater plant spread than the straight variety Manjrigota in main and ratoon crop. Number of tertiary branches increasedin all the varieties in ratoon crop than the main crop irrespective of different pruning levels. Maximum leaf area index was recorded in Krishna with medium pruning (1.77). However LAI was not associated with increase in yield. In all the varieties, light pruning increased the plant spread in ratoon crop than the respective main crop. In ratoon crop, Krishna with light pruning recorded the highest yield/plot (14.70 kg), which can be estimated to 14.58 t/ha. This was 49.67 % lower than the main crop. Hybrids yielded superior than straight variety in both main crop and ratoon crop. The days required for 50 % flowering decreased in ratoon crop than main crop in all the varieties. Both hybrids showed earliness to harvest in main crop and ratoon crop. Pruning had no effect on the days to set fruit and the size of the fruit in ratoon crop. Shoot and fruit borer infestation was higher in ratoon crop in all the treatments because of higher humidity in the kharif season. The fruits of hybrid Krishna were found to be the most marketable after storage (74.38 %) and at harvest as afresh fruit (91.97 %). Ratooning was economically feasible in all the treatments under investigation except Manjrigota with heavy pruning where it was at a loss.As far as cost of cultivation was concerned hybrid Krishna with light pruning recorded the highest net income (Rs. 37,865) per ha in ratoon crop. The total returns from the same (main + ratoon) was Rs 1,24,900 over a period of ten months as against Rs. 87,035 from main crop only, over a period of six months. Thus ratooning was practically and economically feasible in brinjal.
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