Irrigation
-
This publication is intended to be used by those familiar with calibrating a center pivot system. The circular lists the steps, calculations, and charts needed to calibrate a center pivot irrigation system pumping wastewater, without explanations of the process itself. The PDF version contains worksheets and formulas.
The step-by-step calibration procedure includes determining: the wetted diameter of your nozzle or sprinkler; spacing between collection cups; the number of cups needed to collect wastewater from all sprinklers/nozzles. Next, place collection cups in a row, equally spaced in the direction of travel, mark the starting point and then operate the pivot normally and mark the end point. Measure the time taken for the system to pass over all cups. Measure between the start and end points to determine the travel distance. Immediately record the volumes or depths of water in each collection cup and use this to calculate the average application depth (in inches, centimeters, or millimeters). Next, determine your “usable” cups and effective diameter of pivot, and then recalculate the average application depth for the “usable” collection cups. Calculate the reference travel speed and the deviation depth for each “usable” collection cup. Next, determine the average deviation depth, calculate the application uniformity and determine the calibration results.
|
-
Subsurface drip irrigation is the practice of installing drip irrigation below the ground surface. This publication is designed to provide a brief introduction to the site selection, design, installation, and management of subsurface drip irrigation.
|
-
This publication is part of a series focusing on irrigation scheduling for vegetable crops. It contains basic information on water use and irrigation management using the crop water demand method for Solanaceae crops such as bell peppers, tomatoes, and eggplants.
|
-
B 1298
Chemigation in Georgia
Chemigation is an inclusive term referring to the application of a chemical into or through an irrigation system. It includes the application of fertilizers, acids, chlorine and pesticides. Chemigation can save time, reduce labor requirements, and conserve energy and materials. Chemigation is beneficial, however, only to the extent that the irrigation system is adequately designed, fully functional and properly managed.
|
-
With growing demands for potable (suitable for drinking) water (due to population increase) and expanding irrigated acreage, there is an increased pressure on irrigated farms to consider using nonpotable alternatives. However, low quality irrigation water can adversely affect soil physical conditions and crop production.
This publication provides in-depth information on the following aspects of agricultural irrigation water quality:
-Importance of irrigation water quality
-Major attributes of irrigation water quality
-Common units used
-Salts content
-Toxicity and their sources
-Bacteria in water sources|
-
The main objective of this fact sheet is to provide a checklist of what is needed to properly prepare a center pivot or lateral irrigation system for the production season. All of the topics covered apply to both pivot and lateral irrigation systems, but for brevity, only center pivots will be referenced. By using the items in this fact sheet as a guideline for preventative maintenance, most breakdowns during the growing season should be avoided.
|
-
This circular is a review of water quality standards, calculations, and recommendations for water that will be used for irrigation of blueberries.
|
-
With rising fuel prices it is increasingly important that irrigation systems apply water uniformly in order to achieve maximum benefit from the water applied. The uniformity of water application under a center pivot is determined by setting out cans or rain gauges along the length of the pivot, bringing the irrigation system up to proper operating pressure, and letting the system pass over them.
|
-
C 1027-12
Irrigation
This publication describes irrigation methods suitable for community or school gardens, including overhead sprinklers, hand watering and drip irrigation.
|