Activity 11B : Displaying the results per technology – Solution

In the technique 1.gms model, the farmer cultivates 14,2 ha of extensive wheat and 35,7 ha of intensive maize. This cropping pattern requires 214,2 thousand m3 of water. You have now introduced an irrigation constraint which limits the quantity of available irrigation water. The model offers a new solution, which makes it possible to follow this constraint.

The land area dedicated to non irrigated extensive wheat has increased, that of maize has increased, and intensive tomato which optimizes irrigation water appears in the solution. All three land, labour and water constraints are binding. In the technique2 model, the income obtained is lower than the one obtained in the technique1 model, since it is more constrained.

Optimum cropping pattern is as follows :

Income is as follows  : 40365.672€.

Download the solution model here : techn2.gms

The result parameter is written as follows :

Parameter RESULT(*,*);
RESULT(c,t) = X.L(c,t);
RESULT(c,’TOTAL’) = sum(t, X.L(c,t));
Display RESULT ;

qq