Soil Fertility and Farming in Ghana
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Great, today we are going to talk about soil fertility and farming in Ghana for that matter Africa. Soil fertility basically is the ability or the capacity of the soil to supplied nutrients in adequate amounts and in the right proportions and ensure steady flow of the nutrients to plant throughout the growing season. Many soils in Ghana and Africa as a whole do not have the adequate amount of nutrients thus poor yields are recorded at the end of the season. A visit to many farms in the country show that, large hectares of farmland are cultivated especially for maize but as usual small number of bags are packed at the end of the growing period. I do not blame farmers for this since many do not know the ways of replenishing soil fertility. Before I go on to talk about ways of improving soil fertility, remember that, every field contains a maximum of one or two and minimum of one or two nutrients.
WAYS OF REPLENISHING SOIL FERTILITY
There are many ways we can employ in order to make our soils fertile so that we can have bumper harvest even if the the plot of land cultivated is not larger enough. Some of these are as follows fallowing, green manuring, cover cropping, mulching, application of farm yard manure, lime and inorganic fertilizers. Let us take time and critically look at each of these methods one after the other.
FALLOWING
This simply talks about the process of reshuffling and recycling of the nutrients. This process increases the organic matter content of the soil due to the decomposition of fallen leaves, seeds, twigs and branches. The humus content also get increased because of activities of both macro and micro organisms like termites and earthworms, root slough and exudation. This method is however effective in the forest zone than the grassland area due to less biomass and bush burning resulting in bare soils in the latter. Fallowing, nowadays has become difficult to practice since many of these farmlands have been taken up for commercial purposes such as real estate development and also population increase has increased pressure on the land acquisition and use thus farmland do not usually fallow.
GREEN MANURING
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| Green manuring plant. |
COVER CROPS
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| Cover crop |
- prevent soil erosion through protecting soil against direct impact of rain drops and reduction of surface runoff.
- regulate the temperature of the the soil by providing shade to the soil hence reduce rays of the sun from direct contact to the soil.
- improve the soil structure and organisms in the soil.
- conserve the soil moisture.
Growing of cover crops is commonly practice here in the country mainly in the tree plantation.
MULCHING
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| Mulching material |
FARM YARD MANURE
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| Farm yard manure |
Farm yard manure is a source of plant - food. Manure contains Nitrogen, Phosphorus and Potassium compounds which are the constituents needed in the soil for growing crops. Manure promotes the growth of useful organism in the soil. These organism break down complex compound into simple which decomposed adding nutrients to the soil. Many farmers do add farm yard manure to the soils here in Ghana but the problem I have seen with this method has got to do with its application. Many just put them on the leaves of the growing crops in order to prevent animals from feeding on them. This does not help to achieve the purpose of farm yard manure.
INORGANIC FERTILIZERS
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| Inorganic fertilizers |
It is therefore our hope that farmers will start to implement some of these methods to improve production level.
