Output Effects of Agri-environmental Programs of the EU



As depicted in Table 1 participation rates were highly unequal between programs,
ranging from a high of 93% for ‘elementary support’ to a low of under 1% for ‘non-
application of synthetic chemical crop protection agents’.

Table 1

As illustrated in Figure 1 most farms participate in more than one program and on
average in three programs:

Figure 1

In order to be able to compare yields of different kinds of grain (we looked at wheat,
rye, oats, barley), we constructed a index of relative yields for every farm in the following
way: relative yields of farm
i for gain j (vij) is given by
i = 1, . . . , n farms, and j = wheat, rye, barley, oats,
where
V is the absolute yield of farm i for grain j and V is the average yield for grain j over
all
n farms. The relative yield of farm i over all j grains (vi) is given by

Vj

(1) vj = ɪ
v i i Vj


∑( √F∕)

(2) v. = 1  —:— , i = 1, . . . , n farms, and j = wheat, rye, barley, oats,

∑ Fi

j



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