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Tools Clipart ETC (2261 words) |
 | Plane A carpenter's tool used for paring, smoothing, trunig, and finishing woodwork. |
| Planimeter A tool used to measure a flat plane. |
| Polariscopes are tools used to measure the polarisation of light. |
| Distance Learning Course:SARD Learning (3657 words) |
| A permanent soil cover is important to: protect the soil against the deleterious effects of exposure to rain and sun; to provide the micro and macro organisms in the soil with a constant supply of "food"; and alter the microclimate in the soil for optimal growth and development of soil organisms, including plant roots. |
| The positive impact of conservation agriculture on the distribution of labour during the production cycle and, even more important, the reduction in labour requirement are the main reasons for farmers in Latin America to adopt conservation agriculture, especially for farmers who rely fully on family labour. |
| During the first years of implementing conservation agriculture the organic matter content of the soil is increased through the decomposition of roots and the contribution of vegetative residues on the surface. |
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