Farmers of Amdalli village in the Karwartaluka of Karnataka make use of camphor to store groundnut pods and pulses. With the help of camphor, groundnut pods are stored for a period of 6-7 month. The method consists of filling properly dried groundnut pods in polythene lined gunny bags to a height of 30 cm. Approximately 8-10 pieces of camphor are placed on this before filling it further. Likewise, the entire bag is filled up and then its mouth is tied tightly. The bags are kept in moisture free places. This process is to be completed before the onset of monsoon. The same method is also used for storing pulses meant to be used as seed. Complete this process before the onset of monsoon. The same method is also used for storing pulses seed.
Crop Family: Legume
Crop Scientific Name: (Arachis hypogea)
Crop Vernacular Name: Mungfali, Sing
Formulation: Camphor to store groundnut pods and pulses
Ingredients: Camphor, and polythene lined gunny bags
"The biological activity of camphor, a major component of essential oil of the basil shrub, Ocimumkilimandscharicum, against the beetles, Sitophilusgranarius, S. zeamais, Triboliumcastaneum and Prostephanustruncatus, was investigated in the laboratory using contact toxicity, grain treatment and repellency assays. Camphor applied either topically, impregnated on filter papers or whole wheat and maize grains was highly toxic to all the four species. Beetle mortality was dosage-dependent with the highest doses of 100 mg/ filter paper and 100 mug/insect evoking over 93% and 100% mortalities, respectively, in S. granarius, S. zeamais and P. truncatus after 24 h exposure. Similar doses induced 70% and 100% mortality in T. castaneum. Camphor impregnated on the grain surface was more effective than on filter paper. There was, however, highly significant reduction in toxicity in grain after only 24 h following treatment. Development of eggs and immature stages within grain kernels, as well as progeny emergence, was completely inhibited in camphor-treated grain. Camphor was also highly repellent to the beetles with overall repellency in the range of 80 - 100%." [Obeng-Ofori, D. &Reichmuth, Christoph&Bekele, AJ &Hassanali, Ahmed. (2010). Toxicity and protectant potential of camphor, a major component of essential oil of Ocimumkilimandscharicum, against four stored product beetles. International Journal of Pest Management. 44. 203-209. 10.1080/096708798228112.]
"Camphor is used for short-term storage of grains required for next season planting. The shelled grains or paddy are stored in bags or pots after being sun-dried and camphor is placed inside the storage bags or container. The mode of action of camphor used in such grains storage could be either fumigant, repellent or antifeedant attributed to pungent odor emanating from the camphor (Karthikeyan et al., 2009a)."