Skills, Partnerships and Tenancy in Sri Lankan Rice Farms



problem can be restated in terms of time inputs per unit of land.


max hi {a *f (Z1*,z2s ; S) - z2sv- βɔ + v
z
2s        l                      s                               s           s


[13]


where the tenant takes the landlord’s optimal choices of a . β*s and Zl*s as given. The assumption here is


that each tenant and the landlord engage in a one-shot non-cooperative Nash game where each party


maximizes his or her income subject to the optimal choices of the other.


Let


a * f ( Z1*, z2s;S ) - z2sv = rs ( a *, Z1*)


[14]


The tenant’s optimal choice of z2s is


z2*s= argmax rs(a*, Z1*)


[15]


This is the reaction function of the tenant that is solved simultaneously with the landlord’s choice of Z1s to


obtain the Nash equilibrium levels of time inputs. Once the time inputs are chosen, the tenant’s income is


reduced to


*       *       *      Λ

hS [rs (a , Z1s ) - β s] + v


[16]


where rs * = rs (Z2s*). The share tenant will lease-in land if r*βs.   For those who lease-in, the


maximum amount of land cultivable with the optimal levels of time inputs is


Λ* _  1

h s      ɔ*

z2s*


[17]


The Landlord’s Problem:

The landlord maximizes his or her income subject to a time constraint and the reservation incomes
of tenants. The choice variables of the landlord are the time inputs in owner-farmed and sharecropped
land (T1
o, T2o,T1s), the amount of land under each type of contract (Hs and Hf) and the contract


10




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