<h3>Why Soil and Water Must Be Conserved</h3><p><strong>Soil</strong> and <strong>water</strong> are the two most important resources on any farm. Healthy topsoil holds the nutrients, air and tiny living things that crops need, while water keeps plants and animals alive. Both are easily lost: topsoil can be carried away by rain or wind in a process called <strong>soil erosion</strong>, and water can run off the surface or evaporate before crops can use it.</p><h3>Soil Conservation Measures</h3><ul><li><strong>Terracing</strong> — cutting steps across a slope so water moves slowly instead of rushing downhill.</li><li><strong>Contour ploughing</strong> — tilling across the slope (along the contour) rather than up and down it.</li><li><strong>Mulching</strong> — covering the soil with dry grass, leaves or crop remains to stop the rain hitting bare ground.</li><li><strong>Cover cropping</strong> — growing low plants such as beans or sweet potato vines that shield the soil.</li><li><strong>Grass strips and agroforestry trees</strong> — planted along boundaries to trap soil and slow runoff.</li></ul><h3>Water Conservation Measures</h3><p>Farmers conserve water by harvesting rain into <strong>water pans</strong> and tanks, building <strong>cut-off drains</strong> and <strong>retention ditches</strong>, mulching to reduce evaporation, and using <strong>drip irrigation</strong> that delivers water straight to plant roots.</p><div class="callout"><strong>Kenyan context:</strong> In the dry parts of Machakos and Makueni Counties, families dig <em>fanya juu</em> terraces (throwing the soil uphill to form a ridge) and harvest rainwater in <em>ndumas</em> and farm ponds. These low-cost methods let them grow drought-tolerant crops like sorghum, green grams and pigeon peas even when the rains are short.</div>
Audio narration — reads aloud, works offline
Which farm resource is most directly lost during soil erosion?