Directions: Below Is 4 Different Types of Irrigation- Please Research Each Type of Irrigation

Name: ______Directions: Below is 4 different types of irrigation- Please research each type of irrigation and write down how each irrigation system works.

Ditch Irrigation Ditch Irrigation Questions & Answers | eHow.com http://www.ehow.com/info_8767842_ditch- irrigation-questions-answers.html#ixzz2OCn9AWhB Irrigation is a ______of providing supplemental water to areas where naturally occurring amounts of ______are insufficient. Ditch irrigation is a system of ______or furrows dug into the ground to deliver water. The idea behind this type of water delivery is used to maintain water flow using the ______amount of water required. ______and ranchers to provide water to herds and crops use ditch irrigation. These manmade diversions have parts to help guide a gravity-fed system such as head gates, lifts, culverts, drops and weirs.

Terracing http://www.socialstudiesforkids.com/articles/geography/terracefarming.htm Another way that people adapt to their ______is terrace farming. What is this exactly? Well, think of a steep-sloping hillside. If this is the only land you have to grow crops on, how do you then grow crops without everything sliding down the hillside? Since ancient times, ______have built terraces to shore up a hillside, creating several levels of farms. In a small, seemingly inhospitable ______, they can grow the crops they need to grow to ______. Look at the above photo of an Inca hillside farm. See the "steps"? The Incas created those "steps" using ______and ______. From a steep slope they created many level plains, on which they could (and did) grow ______.

Overhead irrigation http://home.howstuffworks.com/irrigation2.htm

An overhead irrigation system is a lot like a lawn ______-- the basic principle is the same. Water is pumped in under pressure and sprayed down onto the ______from flat spray nozzles. Because it can be difficult to produce an even coverage, some more expensive systems may feature a moving overhead boom. This mechanism, which moves across the length of the whole ______, can then disperse the ______in a much more even manner Overhead systems are particularly useful when covering ______areas of land and some can even be dismantled and moved from field to field with little trouble. Because overhead irrigation systems need a plentiful supply of water at a relatively high pressure, they vary greatly in complexity and cost depending on the acreage you're covering. Another important thing to keep in mind is that, with overhead irrigation, the foliage of a crop does get wet. If the leaves remain ______for an extended period of time, anywhere from as little as 10 and up to 24 hours, this can cause problems with fungi and bacterial disease.

Drip irrigation http://home.howstuffworks.com/irrigation3.htm While surface irrigation methods rely on watering the whole surface of the field and ______irrigation leaves the plants wet and produces runoff, drip irrigation is far more ______. ______is slowly provided to a very specific area, close to the roots of the plant, by a network of drip emitters.

The ______to using trickle or drip irrigation is, simply, control. This method of irrigation is precise and economical. A standard ______sprinkler, for example, might measure the water flow in gallons per minute -- somewhere between one and five is normal. A drip emitter, on the other hand, is rated in gallons per hour. The flow of water is so slow that it is easily absorbed into the ground. In a well-tuned system there is little opportunity for excess water running off and being ______. And this approach can be even more fine-tuned by going underground.