. Better fruit. Fruit-culture. June, ig20 BETTER FRUIT Page 15 set out in such a way as to decrease the slope of the furrows. The number of furrows in orchards should .depend on the age of the trees, the space between the rows, the depth of furrow, and the character of the soil. Nursery stock should be irrigated by one or two furrow-s and young trees by two to four. A common spacing for shallow furrows is two and one-half feet, but deeper furrow^ are three to four feet apart. The general trend of orchard practice is toward deep rather than shallow furrows, a depth of eight inches being used in
. Better fruit. Fruit-culture. June, ig20 BETTER FRUIT Page 15 set out in such a way as to decrease the slope of the furrows. The number of furrows in orchards should .depend on the age of the trees, the space between the rows, the depth of furrow, and the character of the soil. Nursery stock should be irrigated by one or two furrow-s and young trees by two to four. A common spacing for shallow furrows is two and one-half feet, but deeper furrow^ are three to four feet apart. The general trend of orchard practice is toward deep rather than shallow furrows, a depth of eight inches being used in many instances. In spacing furrows chief considera- tion should be given to the lateral move- ment of moisture in the soil on each side of the furrows, so as to insure a fairly uijiform distribution of moisture. In'the Payette Valley, Idaho, 200 or more miner's inches are fumed into the head ditch and divided up by means of wooden spouts into a like number of furrows. On steep ground much small- er streams are used. The length of the furrow varies from 300 feet on steep slopes to 600 feet and more on flat slopes. The time required to moisten the soil depends on the length of the furrow and the nature of the soil. In this locality it varies from three to 30 hours. A 20-acre orchard tract under the Sunnyside canal in the Yakima Valley, Washington, is watered four times in each season with 14 miner's inches ( cubic foot per second.) Three furrows are made between the rows, which are 40 rods long. The total sup- ply is applied to one-half the orchard (ten acres) and kept on 48 hours. On the clayey loams of the apple or- chards on the east beach of the Bitter Root River, Montana, Professor R. W. Fisher, formerly horticulturist of the agricultural college of Montana, has found, as a result of experimenting, that it requires from 12 to 14 hours to moisten the soil in furrow irrigation four feet deep and three feet sideways. A Practical Demonstration of Fruit Thinning By C. A. Nor
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