By Raymond C. Loehr
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Additional info for Agricultural Waste Management: Problems, Processes and Approaches
These efficiencies, however, have generated or been associated with a variety of problems related to the quality of our environment. The relationship between the efficiency of agricultural production and potential environmental quality problems is more pronounced as methods of agricultural production and processing become more intensive. Many of these potential environmental quality problems are associated with the excesses from agricultural production operations. These excesses can be in the form of animal waste at animal production facilities, runoff and leachate from fertilized and manured fields, and liquid and solid wastes generated at food processing operations.
S. agriculture. Income of the farm population from nonfarm sources has increased substantially and in 1968 was almost one-half of their income from all 44 2. Changing Practices in Agriculture sources. As a group, farm operator families with sales of $2500 to $5000 received about two-thirds of their total income from off-farm earnings while farms with farm sales of less than $2500 received over 85% of their income from off-farm sources. Only farms with sales of $20,000 or over exceeded or equaled the average income of the nonfarm population.
Changing Practices in Agriculture Fig. 2. W h e a t harvesting equipment illustrates the mechanization a n d labor saving equipm e n t in American agriculture (courtesy U . S . D e p t . of Agriculture). every two acres released, about one acre of new crop land was developed. Much of the new land is more productive than that abandoned. This differential land productivity coupled with improved crop varieties, higher use of fertilizer and pesticides, and land improvement practices such as drainage and irrigation have resulted in noticeable increases in per acre yields.
Agricultural Waste Management: Problems, Processes and Approaches by Raymond C. Loehr