Muralidharan, K.Thamban, C.Arulraj, S.Sairam, C.V.Sud, U.C.Mathur, D.C.Bathla, H.V.L.2014-06-272014-06-272002Proceedings of Placrosym XV (2002): 752-758http://hdl.handle.net/123456789/3407Influencing the farmers in making right input management decisions is vital for enhancing the productivity of coconut Efficiency of inputs varies from location to location. On the basis of data on inputs and output from a total of 600 holdings selected by following a three stage random sampling design, the input use efficiency in coconut gardens of three districts viz., Kozhikode, Emakulam and Thiruvananthapurarn was analyzed. The yield differences for variable levels of inputs were described as the incremental yield over the average yield of the region without adopting any technology. The results of this study indicate that the often assumed effect of input use on yield may not be realized uniformly under varying field situations Application of manures (organic and inorganic) has a decisive role in productivity in Emakulam and Thiruvananthapuram districts which is substantiating the relevance of manurial recommendations for root(wilt) disease management by CPCRI. Irrespective of irrigation status, application of chemical fertilizers results in higher yields.enArticle