Author(s):

Amit Prakash Nayak and Dr. RK Prajapati

Abstract: Gum collection from trees is important sources of livelihood for Tribes residing in Chhattisgarh. The industrial application of natural gums has been expanded tremendously in recent years. The Jhingan gum obtained from Lannea coromandelica Houtt. Merr. (Anacardiaceae) is important gum yielding tree and having lot of economic value particularly in chocolate industries. Its demand is increasing in western countries due to its industrial applications. The unsustainable methods of gum extraction leading to death of trees. The unscientific harmful tapping practices lead to reduce the populations of gum yielding trees like, Lannea coromandelica Houtt. Merr. from its natural habitat. This causes loss of wild germplasm from natural forest stands. The present experiment were conducted for one year to standardize the tapping methods, tapping seasons, chemical concentration on trees having girth of 80-150 cm in natural forest stands of Deopur Forest Range under Balodabazar Forest Division of Chhattisgarh. To obtaining the maximum gums from this species, different tapping techniques have been applied to enhance the gum production without harm to trees. The Maximum gum production was obtained in Mechanical + Chemical tapping techniques by using V shaped cut, However in mechanical tapping techniques maximum gum was obtained by square shape cut method. Ethephon used as catalyst to enhance the metabolic activities to ooze out the maximum available gum in the gum canals for this in all the 24 treatments in both the season concentration of 4ml Ethephon found much effective for the highest gum production of 140.59 grams/tree in summer (March-May) and 51.13 grams/ tree in winter (October – December) by using V4 30% concentration. High temperature in month of March to May was found significantly effective for maximum gum production. The quality parameters of exudates gum were investigated and gum was found to be mild acidic in, high moisture content16.9% and moderate ash content was 2.5%. This technique is simple and safe ensure sustainable yield, regeneration and survival of the tapped trees having no harm and mortality.

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