EFFECT OF EARTHWORM CASTS FROM A NATURAL MEADOW ON SOME SOIL PHYSICO-CHEMICAL CHARACTERISTICS AND LETTUCE GROWTH
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Date
2020-09-01
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Journal of Fundamental and Applied Sciences
Abstract
Fertile Grounds are the source for agricultural production and effective nutrients management.
We aim at surveying the contribution effect of earthworm casts on physical and chemical soil
characteristics (pH, organic matter, electrical conductivity, exchangeable cations) and their
impact on morphophysiological parameters of lettuce. Basically, for this operation we have
choose three levels of intake (100, 250 and 500g of earthworm casts/pot). The obtained results
have shown that the earthworm casts are rich in nutrients such as nitrogen, calcium, potassium
and organic matter. Correspondingly, the contribution of earthworm casts has increased the soil
content of OM, NTK, K+ and CaCO3. Also, it has a positive effect on chlorophyll, aerial, root
biomass and on lettuce growth in general. The results also have indicated that the 500g dose of
earthworm casts/pot have been increased the various parameters.