When the cotton crop is infested with sucking pest (aphids), 1 kg of iron sulphate and 100 gram "limbu na phool" (citric acid) are mixed in one vessel to prepare a decoction. About 100 mL of this decoction is diluted in 15 litres of water and this solution is sprayed on one bigha (2/5 of hecatre). The combination acts as a herbal pesticide. The effect of this herbal pesticide remains for three days during which sucking pest (aphids) are eradicated. Samajibhai Gagubhai Ratron controls sucking pest (aphids) in his cotton crop at Vanadia in Junagadh district by this method.
Crop: Limbu na phool
Crop Family: Limbay, limda pan, limbu
Crop Vernacular Name: Citric acid
Formulation: Iron sulphate and limbu na phool
Ingredients: Hirakasi or Ferrous sulphate, citric acid crystal
"Mohamady, Aziza. (2009). Insecticidal activity of citric acid and its soluble powder formulations against Aphis craccivora under laboratory conditions. Egypt. Acad. J. biolog. Sci.. 2. 7-12."PAS 2:
"Salem, H., Hashem, H., Desuky, W., Ghatwary, W. (2007). EVALUATION OF SOME LOCAL INSECTICIDES AND THIER ALTERNATIVES AGAINST (Scymnus Syriacus MARS). Journal of Productivity and Development, 12(2), 547-552.