Page 233 - Environment: The Science Behind the Stories
P. 233

9











































                     Iowa farmers Todd and Arliss Nielsen with the rye grass cover crop
                     that protects their soil between corn harvests

                     Soil and Agriculture










                     Upon completing this chapter, you will be able to:

                        Explain the importance of soils to agriculture       Explain the principles of soil conservation and provide
                                                                            solutions to soil erosion and land degradation
                        Outline major developments in the history of agriculture
                                                                             Describe techniques for watering and fertilizing crops, and
                        Delineate the fundamentals of soil science, including soil   offer more sustainable alternatives
                       formation and soil properties
                                                                             Summarize major policy approaches for pursuing soil
                        Analyze the causes and impacts of soil erosion and land   conservation and sustainable agriculture
                       degradation














             232
             232






           M09_WITH7428_05_SE_C09.indd   232                                                                                    12/12/14   2:59 PM
   228   229   230   231   232   233   234   235   236   237   238