Download Agriculture: The Food We Grow and Animals We Raise by Julie Kerr Casper PDF

By Julie Kerr Casper

Explores essentially the most very important makes use of of the land: the creation of agriculture. This e-book is helping readers study that farms and ranches produce even more than nutrients; yet scientists, farmers, ranchers, and different landowners have not solved conservation difficulties - but.

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Extra info for Agriculture: The Food We Grow and Animals We Raise

Example text

Early European settlers in North America unwittingly brought a lot of weed seeds with them. The seeds could have been hidden in the hay they brought over for their animals, in the dirt they used as ballast for their ships, in the fleece and hair of livestock, in their clothes and bedding, or accidentally mixed in with part of the seeds brought over to plant. Some human activities, such as clearing the land to build on or farm, created open places for weeds to grow. Settlers also purposely brought plants from their countries of origin to reseed areas in their new land, make dye for clothing, or use as ornamental plants (as decorations).

A food web consists of many interconnected food chains. The only way to untangle the chain is to trace a specific food chain back to its source. Food webs are critical in agriculture, both in cultivating crops in fields, and in grazing animals on rangelands. They are also very complex, and like most complex, interconnected systems, the whole is greater than the sum of its parts—if the parts are removed, the system disintegrates. In the food web, if key organisms or multiple groups disappear, the web may collapse.

Stewardship of the land and its natural resources involves managing it so that the same resources are there for the long term. Leaving the condition of the resources in even better shape than when we got them is the ultimate goal. Like anything, this involves a plan. People must be educated and records must be kept on management techniques so that future generations can use—or improve on—those techniques. With effective stewardship of the land, humans get many benefits: fertile soils, an abundance of crops, safe drinking water, clear streams, lakes full of fish, skies full of birds, and beautiful landscapes.

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