Vol. 51—1997 - NorthEastern Weed Science Society

Waggone
December 24, 1994
144
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500
E
Fig 11. Th
exchange r
1 but no v
On the map
and ferti1
A critic w
drummer, w
kg of herb
times the
fertilizer
land use c
Consciousn
expense at
the chemic
exchange r
shows impr
environmen
coefficien
but the fr
the same c
recognize
expense.
contours of environmental expense when the
tes per kg of herbicide and fertilizer are 200 and
lue and so an exchange rate of 0 is given to land.
herbicide increases eastward from 0 to 2 kg/ha
zer increases northward from 0 to 250 k fha.
a marches to a balanced band rather than a single
ile still setting 200 times the exchange rate on a
cide as on a kg of fertilizer, might place 100
xchange rate on a hectare of land as on 1 kg of
The contours of Fig 12 show the consciousness of
uses an earthquake.
ss of land use locates minimum environmental
1.4 kg/ha herbicide and 75 kg/ha fertilizer where
Is are in step and land is spared. When prudent
tes are placed on land and chemicals, integration
ving all factors in step minimizes the
al expenses of growing the specified crop. Other
s and other factors can be substituted for mine,
ework will accommodate them and likely produce
mmonsense that the boss of Widgets Inc. would
nd an agronomist could use to cut environmental