The study examined resource productivity among smallholder farmers who practiced low external input
technology (LEIT) and discussed issues of sustainability of this technology in Imo State. Cross sectional data
generated from 80 smallholder farmers randomly selected from 2 out of the 3 agricultural zones in Imo State were
used. Production function was used in analyzing the data. Results showed that an increase of farm size by one
hectare would increase gross output of LEIT farmers by N97159.13. Also an increase of one man day of labour
would increase the LEIT farmers’ gross income by N1876.14. Furthermore, one naira increase in capital input,
planting materials and organic manure would increase the gross output of LEIT farmers by N23.54, N1.959, and
N5.468 respectively. It is therefore recommended that in the face of escalating costs of fertilizer, organic manure
could be used. Appropriate policies should be put in place by the government to encourage livestock rearing so as to
effectively utilize their bye product-organic manure. Household refuse or bio-degradable from the cities could be
channeled to farms to serve as organic manure