총 947페이지

Cover cropping can help prevent soil-borne pests and disease. For instance, using cabbages as
cover crops in Wales and Lower Saxony, Germany, decreases bacteria, fungi and nematodes
affecting sugar beets. Oat cover crops have also been known to limit nematodes and bacteria
in potato production. Of course, although not a cover crop, mulch plays a vital role in
protecting the soil. A 3-inch layer of bark mulch over topsoil will help it retain moisture and
raise the soil temperature. Farmers may also decide to use mulch in addition to cover crops
or afterward to prevent weeds.
Cover Crop Solutions in African Agriculture
Cover crops are much more affordable than investments in cutting-edge agricultural
technologies ? this proves critical to resource-depleted and financially burdened African
smallholder farmers.
Farmsteads in northern Benin have had impressive results with brown hemp, Crotalaria flowers
and legumes. Brachiaria ruziziensis ? Congo grass ? has also performed well, with
well-covered plots retaining 7%?13% moisture and sprouting fewer weeds.
Experts generally recommend planting five or more cover crop species together ? from the
cabbage, grass and cereal families ? to ensure more biodiverse organic matter. Dolichos
beans ? a type of legume ? are especially capable of adapting to varying climate conditions,
pH levels between 4.4 and 7.8 and soil varieties. It also holds up well in droughts, which have
tremendously affected the Horn of Africa in recent years. Other options include fodder rye,
black oats and fodder radish. Black oats can endure low soil pH and balance calcium levels,
while fodder radish is immune to clubroot and similar diseases. It also helps aerate the soil
when it cracks open.
Cover Cropping: An Essential Solution for Sustainable African Agriculture
Climate change impacts will continue to wreak havoc on African smallholder farms as the
agriculture sector desperately tries to ramp up yields. Consequently, the continuation of
conventional farming techniques will diminish soil fertility and stability, posing a threat to the
food supply. Cover cropping is a sustainable, feasible solution to preventing erosion and
reduced soil quality for optimal plant growth. Smallholder farmers in African countries can
enhance soil’s nutritional density and solidity by planting cover crops.
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