tailieunhanh - The preparation and use of compost - Part 4

7 Putting compost to use Some of the many uses of compost are given in this chapter. Examples are: ? fertilizing; ? potting soil, nursery soil, planting trees; ? erosion prevention; ? fish feed. ? mushroom growing - (not treated in this Agrodok). | 7 Putting compost to use Some of the many uses of compost are given in this chapter. Examples are fertilizing potting soil nursery soil planting trees erosion prevention fish feed. mushroom growing - not treated in this Agrodok . When the compost is ready it can not always be used straight away and it has to be kept for a while until it can be put to use. Care has to be taken that the compost does not lose its fertility during storage. Caring for the stored compost Compost should never be left uncovered in the rain or in the sun. The rain washes out the nutrients and the sun can cause burning. The compost then loses its fertility. To reduce this loss the compost should be covered. Some useful covers are banana leaves intertwined palm leaves or a sheet of plastic. If the compost is left too long it may also become a breeding place for unwanted insects such as termites and the rhinoceros beetle Oryctes rhinoceros . Fertilizing The advantage of using compost for fertilizing is that it improves soil fertility in the long run by improving the soil structure. Organic matter is the key factor in improving the soil structure. Organic matter contains a lot of micro-elements important for plant growth and it improves the water retention capacity of the soil. Another aspect is that compost releases the nutrients slowly which means that the effect of compost is one in the long run. Artificial fertilizers contain only a few nutrients Nitrogen Phosphorus and Potassium but of these nutrients the concentration is far 40 The preparation and use of compost higher than in compost. Nutrients from artificial fertilizer are released quickly. This means that artificial fertilizers are a quick one-off supply of nutrients to satisfy the needs of a crop. Adding artificial fertilizer alone is not sufficient to retain a sufficient level of soil fertility. Organic matter is needed to retain the water and nutrients. In a degraded soil where there is no organic matter yields will still .

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