Technical efficiency in resource use: Evidence from smallholder Irish potato farmers in Nyandarua North District, Kenya.

There has been a consistent decline of Irish potato production in Kenya which challenges the food security status of the country. This paper used data from a field survey using a random sample of 127 smallholder potato producers from Nyandarua North District to assess technical efficiency in resource use and to identify the underlying determinants of variations in production efficiency. A dual stochastic parametric decomposition technique was used to derive technical efficiency indices while a two-limit Tobit model was used to examine the effects of socio-economic characteristics and institutional factors on the derived technical efficiency indices. Results show that resource use is subject to decreasing returns to scale while the mean technical efficiency is 67%. Education, access to extension, access to credit and membership in a farmers' association and innovations positively and significantly influence technical efficiency. Therefore, Innovative institutional arrangements that enhance extension and farmer training, accompanied with improved access to credit are likely to enhance potato production efficiency.