THE IRRIGATION AGE. 



crops, such as beets, carrots, and parsnips are sowed in 

 rows eighteen inches apart. The furrows are made very 

 shallow, but the land used has sufficient fall (ten inches 

 in 100 feet) to be irrigated evenly throughout the length 

 of the furrows. One break in the lateral serves to sup- 

 ply several furrows. Where the length is between 200 

 and 300 feet, the water is allowed to run down each fur- 



to the rows, say within eight inches of them. In this 

 way the water is certain to reach the small rootlets of 

 the younger plants and a less amount of water is needed. 

 The four-shovel cultivator is used in making these fur- 

 rows. The shovels are set in pairs and one furrow is 

 made with each pair. But one furrow is made for each 

 row and the furrows that irrigate any two rows are made 



'^^^^^^^^^^^^^^1?^^^ 



[Depressed Beds. Illustration from Primer of Irrigation.] 



row for about two hours. The quantity allowed depends 

 largely upon the distance between the furrows. In the 

 garden the water is run down each space between the 

 rows except on potatoes and tomatoes. In the first irri- 

 gation of potatoes the water is turned into every fur- 

 row to insure an even setting, but in later waterings 

 only into alternate furrows. Usually one miner's inch 

 of water is found sufficient for garden furrows eighteen 



between those rows. This makes two furrows between 

 alternate pairs of rows. During later irrigations the 

 furrows are made so as to irrigate two rows each, and 

 are run in the intervening spaces where no furrows 

 were made before. 



In the orchards the furrows are made tbout three 

 feet apart and are at least four feet from the trees. The 

 cultivator used in making these furrows has five shovels. 



Wind Mill and Tank for House and Garden Use. [Primer of Irrigation.] 



inches apart, while as much as three or even five miner's One large shovel in the center makes the furrow, the 



inches are required for furrows thirty or thirty-six two smaller ones on each side cultivate the ground. This 



inches apart. Early in the season when corn is still implement is run over the ground as soon after an irri- 



small, furrows used to irrigate this crop are made close gation as possible and prepares the land for the next 



