Realist Methodology and the Articulation of Modes of Production (ص 292)
غرض
- عنوان
- Realist Methodology and the Articulation of Modes of Production (ص 292)
- المحتوى
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Once the field was ploughed and prepared, earth furrows would
be constructed to canalise water to the vegetable plants. The
earth furrow system consists of a whole series of canals
which are all interconnected and through which water flows
along by means of gravity flow. This system is very wasteful
of water since a substantial proportion of the agricultural
water supply is lost through seepage and evaporation. It is
also wasteful inasmuch as the system is limited in its
ability to direct the water directly onto the plant root. The
wastage of water and tight Israeli control of water resources
was an important factor in inhibiting the development of
vegetable crop production before the introduction of drip
irrigation. In the past farmers with limited water supplies
or whose fields were far from springs and canals would grow
field crops which were mainly rain-fed, such as wheat and
barley. During the pre-1970 period cereal crops and animal
husbandry were the prevalent forms of agricultural activity
in the region.
In conjunction with the furrow irrigation system, farmers
grew local varieties of crops which were generally low in
productivity and were often subject to blight because the
costs of insecticides were prohibitive within the economic
scale of the furrow irrigation system.
The immediate farming benefit of the drip irrigation system
is that it conserves water and very little water is lost
through seepage and evaporation because of the nature of the
system. The system is based on a grid of plastic pipes laid
out in rows about two metres apart and the water flows
Lf,
278. - تاريخ
- ١٩٨٧
- المنشئ
- Alex Pollock
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