describe conservation tillage by 5 point.
Answers
Answer:
Conventional tillage is the traditional method of farming in which soil is prepared for planting by completely inverting it with a tractor-pulled plough, followed by subsequent additional tillage to smooth the soil surface for crop cultivation. In contrast, conservation tillage is a tillage system that conserves soil, water and energy resources through the reduction of tillage intensity and retention of crop residue. Conservation tillage involves the planting, growing and harvesting of crops with limited disturbance to the soil surface.
Tillage of the soil stimulates microbial decomposition of soil organic matter, which results in emissions of CO2 to the atmosphere. Therefore, minimising the amount of tillage promotes sequestration of carbon in the soil. In the last decades advancements in weed control methods and farm machinery now allow many crops to be grown with minimum tillage (Smith et al., 2008).
Introduction top:
Conservation tillage is any method of soil cultivation that leaves the previous year’s crop residue (such as corn stalks or wheat stubble) on fields before and after planting the next crop to reduce soil erosion and runoff, as well as other benefits such as carbon sequestration (MDA, 2011). With this technique, at least 30% of the soil surface is covered with crop residue/organic residue following planting (Dinnes, 2004). It also features noninversion of the soil. This type of soil tillage is characterised by tillage depth and the percentage of surface area disturbed. For example, to plant the crop in figure 1, the planter was adjusted to place the seed 50mm deep and provide a layer of fine tilth 18mm deep across the planted row areas in order to incorporate Treflan, which was sprayed in front of the machine. This was all completed at 20km/h. Conservation tillage methods include zero-till, strip-till, ridge-till and mulch-till. Zero-tillage is the extreme form of
Answer:
Conservation tillage is any method of soil cultivation that leaves the previous year's crop residue on fields before and after planting the next crop, to reduce soil erosion and runoff.