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50 acres acres Advisory Agronomist AGRONOMY Appendix area planted Bordeaux mixture buddings clonal seedlings clone Tjir Committee compost corresponding period disease Distribution of Rubber dusting excise duty Experiment Station field experiments fungicides fungus Government Group half-year imported India infection July Junior Field Officers Kanyakumari District Kerala Kottayam laboratory Labour Welfare Latex leaf leaf-fall leaves legitimate seedlings obtained licence fees Madras Malankara Manurial Experiments manuring March mother trees Mundakayam natural rubber Newplanting October period under report period under review PERMIT HOLDERS Phytophthora palmivora planted area plots pollinations powdery mildew Production of Raw Punalur raw rubber Replanting Subsidy Scheme retention Rubber Act RUBBER BOARD rubber estates rubber growers Rubber Instructors Rubber Nurseries Rubber Plantation Rubber Research Institute seeds selected September series of hand-pollinations small growers soil Sole Crepe sprayed Stocks of Rubber stumps Synthetic and Reclaimed synthetic rubber tapping Thodupuzha tonnes total number trial Vaikundam Visits to Estates yield