I am jagadisha reddy need one suggestion regarding latteral pipes filter cleaning. I used on line drip irrigation system in my mulberry farm by mistake one time through drip i fed NPK and urea which are not water solubels ordinary NPK and urea only. from that time so many filter holes are blocked can any one sugest me how to clean that blocked filters. any acid treatment is there for this purpose. Kindly give me suggestions to overcome this problem.