Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 28.4, Problem 2R
Summary Introduction
To review:
The uses of soybeans and crop rotation technique to treat a land that has been degraded and depleted of nutrients.
Introduction:
A part of the land is being used for growing corn for several years has been depleted of the nutrients, organic matter, and nitrogen required for growing corn. The corn thus produced is unhealthy. The farmers are suggested to grow soybeans and then again grow corn after some years.
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Chapter 28 Solutions
Life: The Science of Biology
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- explain the effect of soil microorganisms on crop production.arrow_forwardName three human activities that can promote soil erosion.Describe several farming techniques (such as terracing andno-till farming) that can help reduce the risk of erosion.arrow_forwardCrop rotation is a sustainable practice of agriculture in which different crops are successively planted on the same land to improve soil fertility and reduce pests and diseases. How is this practice sustainable across the three dimensions?arrow_forward
- The availability of most micronutrients, except for Fe and Mn, increases with decreasing soil pH true or falsearrow_forwardWhat are the functions of soils in a rice field, and suggest management activities to maintain a healthy soil (a soil that can fully provide its full potential or function both to the plants and animals and the environment).arrow_forwardAn extremely acid soil generally limits the availability of many nutrients in the soil. True or Falsearrow_forward
- When the soil is acidic, plants cannot grow on it. True or Falsearrow_forwardIt is June in Fresno and the officials at the water district have just reduced your irrigation ration by 26%. In the field, you determine that the water potential in your soil is -1.68 MPa while the water potential of your crop is -1.62 MPa. Question A. Is your crop able to take up water from the soil? Explain. Question B. It is now late August and your soil water potential is -2.10 MPa, fortunately, you have been granted one magic wish in altering the physiology of your crop to increase its ability to take up water, however, you must choose from one of the options below. Fill in the values denoted by the ? as needed, and select the option that will cause the greatest water uptake by your crop. Option Vs (MPa) Vp (MPa) Vw (MPa) -1.90 0.00 -2.59 +0.13 -2.4 -2.09 -2.05 -2.28 +0.17 4.arrow_forwardA farmer growing maize in Eastern Cape under rainfed and marginal soils approaches you and tell you that maize is no longer doing well under his farm. Some of the soil characteristic in his farm include waterlogging, high pH and low water holding capacity. Advise the farmer on why you believe grain sorghum will do well under his farm conditions.arrow_forward
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