Effects of Temperature and Relative Humidity on Ethephon Induced Gum Exudation in Acacia nilotica

Abhishek Raj


The gum tapping was done by chemical method in January to June 2014. The ethephon (2-chloroethylphosphonic acid) 39% was used in various dilution. In Acacia nilotica it was used in two trade names i.e., E-Super and ethrel @ 39% diluted 100 times 0.39% @ 4ml and 2ml in to south direction, commencement of treatments in different trees were done since January to June and observed that 4ml E-Super (0.39% ethephon) was significantly effective to produce high quantity of gum in the month of May in Acacia nilotica (33.32 g/plant). The gum yield was positively correlated with tapping intensity, rainfall, and minimum and maximum temperatures at tapping time, and negatively correlated with tapping time, and minimum and maximum temperatures at gum collection.


Acacia nilotica, temperature, relative humidity, gummosis.

Full Text:



Ali, A., Akhtar, N., Khan, B.A., Khan, M.S., Rasul, A., Shahiq-uz-Zaman, Khalid, N., Waseem, K., Mahmood, T. and Ali, L. (2012). Acacia nilotica: a plant of multipurpose medicinal uses. Journal of Medicinal Plant Research, 6(9): 1492-1496.

Ballal, M.E., Siddig E.A., Elfadl M.A., Luukknen O. (2005). Relationship between environmental factors, tapping dates, tapping intensity and gum arabic yield of an Acacia senegal plantation in western Sudan. Journal of Arid Environments, 63: 379-389.

Bhattacharya, P. (2012). Linking gum harvesting, conservation and livelihoods: a case of participatory management in dry tropical forest of Madhya Pradesh. State Forest Research Institute.

Harmand, J.M., Ntoupka, M., Mathieu, B., Njiti Forkong, C., Tapsou, J.C., Bois, J., Thaler, P. and Peltier, R. (2012). Gum arabic production in Acacia senegal plantations in the Sudanian zone of Cameroon: effects of climate, soil, tapping date and tree provenance. BOIS ET FORETS DES TROPIQUES, 311(1): 21–33.

Pal, G., Jaiswal, A.K., Bhattacharya, A., and Yogi, R.K. (2012). Lac, Plant Resins and Gums Statistics at a Glance. Indian Council of Agricultural Research.

Sao, K.P. (2012). Physico-chemical properties of some Indian plant gums of commercial importance. Indian Council of Agricultural Research.


  • There are currently no refbacks.

Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.