. Cirtus fruits under irragation. Citrus fruits; Fruit-culture. large standpipe shown at the left is a gate for controlling the flow between two sections of the pipe line. These large stand- pipes are known as gate stands. The handle a operates the gear b to control the flow through section c. In Fig. 2 is shown a cross-section of a gate valve; a is the stem that turns the bevel gears 6 and c; the gear c has threads d that operate the screw e. When the valve is opened the head / is pulled away from the stationary part g and water flows past the opening h and a corresponding opening at the top
. Cirtus fruits under irragation. Citrus fruits; Fruit-culture. large standpipe shown at the left is a gate for controlling the flow between two sections of the pipe line. These large stand- pipes are known as gate stands. The handle a operates the gear b to control the flow through section c. In Fig. 2 is shown a cross-section of a gate valve; a is the stem that turns the bevel gears 6 and c; the gear c has threads d that operate the screw e. When the valve is opened the head / is pulled away from the stationary part g and water flows past the opening h and a corresponding opening at the top of the head. The large standpipe at the left of Fig. 1 is also used to carry water over an "^^^ elevation. In that case the section c is connected to the standpipe near the top and the water is allowed to rise to the necessary level to flow out through c. The standpipes shown at the right of Fig. 1 are for the purpose of distributing water to the soil and are placed at inter- vals along the pipe line. Usually there is one of these distributing standpipes at the end of each row of trees. In the mid- dle standpipe, ci is a valve that, when open, allows water to flow out through openings in the standpipe. The water leaves the standpipe through gates, or jets, e, of which there are usually four. In the standpipe at the right, / is a valve closed. A view of an orange grove at Pomona, California, is shown in Fig. 3. This illustration was made from a photograph fur- nished by the United States Department of Agriculture, and shows the water coming from the gates, or jets, of the distrib- uting standpipes at the ends of the rows of trees. The water IS flowing into furrows that pass down between the rows of trees. A discussion of the methods employed for conducting the water through the grove is given in later paragraphs. 2. When open distributing stands, such as those just described, are used, gate stands are necessary for every 2 feet. Fig. 2. Please note that these images are ext
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Keywords: ., bookcentury1900, booksubjectcitrusfruits, booksubjectfruitcultur
