Artículo de revista
Crop disease management practices in ancient medieval, and pre-modern India [2003]
Nene, Y.L. (Asian Agri-History Foundation, Secunderabad, Andhra Pradesh (India));
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References to man's efforts to protect crops exist in the literature of different civilizations. Some documentation of Indian civilization has survived, References to plant protection are found in vedas, buddhist literature, kautilya's artha-sastra, krishi-parashara sangam literature, of tamil agnipurana, brhat samhita of varahamihira, surapala's vrikshayurveda, viswavallabha of chakrapani misra and some documents of the medieval and pre-modern period. Abiotic (heat, cold wind, fire, lightning, drought, waterlogging, etc. and biotic stresses (birds, rats, locusts, termities, phanerogamic parasites, etc.) as causes of ailments were described. Surapala (c.1000 AD) was the first to classify disorders as internal and external. for the internal disorders of trees, he borrowed the tridosha principle of ayurveda classified internal causes as the imbalance of humors, vata, kapha, and pitta, and attributed symptoms to each of the three. Plant pathology continued along these lines until the pre-modern period when the Western science provided evidences that fungi, etc. can be the causal agents. It is significant that various methods of treatments adoapted today were conceptualized and practiced centuries ago. Seed treatments prior to sowing to ensure lsuccessful and vigorousgermination were given importance. Balanced nutrition was recognized as a preventive measure for ailments. Dressing of wounds, application of pastes over affected tree surfaces, drenching of soil
with different materials, treating roots before transplanting, fumigation of trees and stored seeds, and spraying and dusting in an elemental way were practiced. The materials used were wostly botanicals, inert substances such as ash and brick-dust, cow dung and other animal wastes, and flours of grain,. There are great opportunities to experiment with these materials. If their utility is proven, we might rediscover many environt friendly sustainable plant protection practices.
