We analyze optimal contract choice in agriculture when there is joint moral
hazard on the part of the farmer in the supply of effort and the riskiness
of the technique of cultivation. In the presence of limited liability, hig
h-powered incentive: contracts such as fixed rental contracts will induce t
he farmer to adopt techniques of cultivation that are too risky from the po
int of view of the landlord. On the other hand, low-powered incentive contr
acts such as fixed wage contracts will induce the farmer to supply too litt
le effort. We show that sharecropping contracts emerge as a natural solutio
n to balance these two conflicting considerations. (C) 2000 Elsevier Scienc
e B.V. All rights reserved. JEL classification: D23; D82; O12; Q15.