Abstract:
There exists a great potential for pixie production in Makueni County. The potential is 
13,482 Kgs/Ha. However, various constraints such as costly inputs and lack of adoption of 
sustainable agricultural technologies hinder the production of pixie to the optimum 
potential. The average production is 4,000-10,000 Kgs/Ha. With regard to pixie farming in 
Kenya's Makueni County, the study sought to examine the factors that influence technical 
efficiency. Three specific goals were set out for the study: To determine the technical 
efficiency of pixie production; To investigate the effects of socioeconomic characteristics 
on technical efficiency; and to ascertain the influence of sustainable agricultural 
technologies on technical efficiency. Primary data was collected through the use of 
questionnaires and interview schedules. The sample size for the study was 311 pixie 
farmers who were sampled through purposive and simple random sampling techniques. 
Non-experimental cross-sectional research design was adopted. The Cobb-Douglas 
Stochastic Frontier model was used to determine the technical efficiency of the pixie 
farmers whereas a generalized linear regression model was fitted to determine the effect of 
socio-economic and adoption of sustainable agricultural technologies on technical 
efficiency. The study results found that the technical efficiency of the pixie farmers ranged 
from 0.359 to 0.942, with a mean technical efficiency of 0.750. It was discovered that the 
various socioeconomic characteristics of the farmers affected the pixie farmers' technical 
efficiency. Based on the results of the stochastic frontier production function, the maximum 
likelihood estimates of technical efficiency showed that labour, manure, and fertilizer were 
the factors that led to higher productivity. The mean technical efficiencies for those who 
adopted irrigation, IPM, and soil and water management were 0.771, 0.761, and 0.752 
respectively. The non-adopters mean technical efficiencies were 0.738, 0.72, and 0.737 
respectively. The study recommends for provision of extension services by the extension 
officers to the pixie farmers. To achieve a high pixie output, it is necessary to diversify 
various sources of revenue and encourage young farmers to take up pixie farming. The 
government should: Implement policies that facilitate farmers' access to credit; standardize 
loan repayment terms; and devise plans for those farmers who are highly productive to 
teach less productive farmers how to apply good agricultural practices and close the large 
productivity gap.