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RATOON MANAGEMENT OF WINTER HARVESTED CROP IN NORTH INDIA The sprouting of ratoon crop from winter harvested plant crop in November-December, particularly that of early maturing high sugar varieties is poor resulting in significantly less plant population and cane yield. To obtain a satisfactory ratoon crop under such conditions, the technology of trash burning, breaking soil compaction immediately after harvesting, spraying of stubbles with Emisan – an organo-mercurial fungicide and etheral- a growth regulator, soil application of lindane (Gamma BHC 20EC)/ Chloropyriphos/Regent/Confidor and application of small doses of N,P,K fertilizers followed by covering the stubbles with transparent polythene sheet have been found very useful in improving the sprouting and yield of ratoon crop. Polybag raised plantlets can also be used in spring for gap filling to make up for less plant population.
WHITE POLYTHENE COVER FOR BETTER RATOON SPROUTING UNDER LOW TEMPERATURE CONDITIONS MULTIPLE RATOONING: In order to improve the economics of sugarcane crop in comparison to other cropping systems, there is need for emphasis on multiple ratooning which will further help in improving sugar recovery in the earlier part of the crushing season. At present only one or two rations are taken while there is potential for taking 4-5 ratoons with cultivation of better ratooning varieties, use of moist hot air treated seed, timely and close to the ground harvesting, gap filling with polybag technique, use of organic sources of nutrients and integrated insect pest and disease management. In tropical cane growing areas of the country particularly, multiple ratooning is quite possible due to suitable weather conditions. Intercropping in ratoon crop further improves the economics of this crop. In Florida in U.S.A., taking of four rations and even more is quite common inspite of very low temperature conditions during winter. It is therefore possible to obtain 4-5 ratoon crops in North India also. CANE QUALITY For quick evaluation of cane quality by analyzing a large number of cane samples, the use of sucro-mat is necessary. It will help in monitoring the cane quality with much greater efficiency to achieve high sugar recovery. COMPUTERIZATION Computerization of various agro-techniques like irrigation, water and fertilizer use will help in more precise use of these inputs for obtaining higher cane yield. REMOTE SENSING The new technology of remote sensing should also be introduced to assess more accurately and quickly, the cane yield and area under different varieties. |
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