how does conservation plowing help limit the destruction of soil?
A. by rotating crops, removing moisture, and holding soil in place
B. by returning soil nutrients, removing moisture, and allowing soil to erode
C. by returning soil nutrients, retaining moisture, and holding soil in place
D. by rotating crops, retaining moisture, and holding soil in place
Plz help me!
Plz, I don't understand this at all
from Internet: (I hope this helps.)
One of the earliest methods of conservation tillage came to be known as contour plowing, or plowing on the contour. Tilling the soil along the gentle slopes of a piece of cropland, instead of up and down the gradient, prevents fertile topsoil from being carried downhill by flowing rainwater.
Contour bunding or contour farming or Contour ploughing is the farming practice of plowing and/or planting across a slope following its elevation contour lines. These contour lines create a water break which reduces the formation of rills and gullies during times of heavy precipitation, allowing more time for the water to settle into the soil.[1] In contour plowing, the ruts made by the plow run perpendicular rather than parallel to the slopes, generally furrows that curve around the land and are level. This method is also known for preventing tillage erosion.[2] Tillage erosion is the soil movement and erosion by tilling a given plot of land.[3] A similar practice is contour bunding where stones are placed around the contours of slopes. Contour ploughing helps to reduce soil erosion.
It's B
To determine the correct answer among the options given, let's analyze each option.
Option A: By rotating crops, removing moisture, and holding soil in place.
This option mentions rotating crops, which can help prevent the depletion of specific nutrients and reduce the buildup of pests and diseases associated with a single crop. Removing moisture, however, can lead to soil dehydration and weaken the soil structure. Additionally, holding soil in place is beneficial, but it does not directly address the conservation of soil.
Option B: By returning soil nutrients, removing moisture, and allowing soil to erode.
While returning soil nutrients is crucial for soil fertility, removing moisture and allowing soil erosion are counterproductive to soil conservation. Both practices can lead to soil degradation and loss of topsoil, which are the opposite of what conservation plowing aims to achieve.
Option C: By returning soil nutrients, retaining moisture, and holding soil in place.
This option includes returning soil nutrients, which helps maintain soil fertility and supports healthy plant growth. Retaining moisture is crucial for providing plants with water and preventing soil erosion. Holding soil in place also helps prevent erosion and the loss of valuable topsoil. Therefore, this option seems to correctly describe the benefits of conservation plowing.
Option D: By rotating crops, retaining moisture, and holding soil in place.
This option mentions rotating crops, which is beneficial for soil health. Retaining moisture and holding soil in place are both important practices to prevent erosion and maintain soil structure. Therefore, this option also appears to correctly explain the benefits of conservation plowing.
Considering the analysis, the correct answer is either option C or option D. Both options describe the benefits of conservation plowing in terms of returning soil nutrients, retaining moisture, and holding soil in place.