1 Agricultural Engineering, NDUA&T, Kumarganj, Faizabad.
2 Department of Farm Machinery and Power Engineering, College of Technology, GBPUA&T, Pantnagar-263145, Uttaranchal.
3 Department of Animal Science, College of Agriculture, GBPUA&T, Pantnagar-263145, Uttaranchal.
A portable hand-held device to inject liquid urea solution was designed, built and tested on conventional wheat straw bales. The effects of types of injector, injection pressures of and modes of injection on wetted area i.e. liquid distribution pattern and liquid retaining efficiency of baled straw were studied. The liquid was injected at different injection pressures of 1.0, 2.5, 4.0 and 5.5 kg/cm2 in central horizontal (M) and eccentric horizontal (M2) modes of injection at predetermined five number Of injecting stations using single orifice flat fan (N1), two-transverse orifice (N2) and triple orifice (N3) injectors. The injector N2 was found best in terms of maximum values of wetted area (55.90%) and liquid retaining efficiency (66.60%) at 4 kg/cm2 injection pressure in M mode of injection followed by N and N injectors. Doubling the number of injecting2 stations to ten had appreciably increased the liquid retaining efficiency and moisture content of ammonia (urea) treated baled straw.
