. Cranberries; : the national cranberry magazine. Cranberries. Report merely explained the prob- lem, but did not make recommenda- tions. Meanwhile, Dr. Chandler had en- tered into correspondence with G. O. Schwab and other scientists at the University of Iowa, There, the problem was also being stud- ied. Researchers had conducted a series of tests using: perforated plastic tubing of different numbers of perforations, sizes and wall thicknesses. The tube would be inserted in the earth and tests were made to measure water run-off. In 1953, Dr. Chandler received 1,000 feet of unpreforated polye-
. Cranberries; : the national cranberry magazine. Cranberries. Report merely explained the prob- lem, but did not make recommenda- tions. Meanwhile, Dr. Chandler had en- tered into correspondence with G. O. Schwab and other scientists at the University of Iowa, There, the problem was also being stud- ied. Researchers had conducted a series of tests using: perforated plastic tubing of different numbers of perforations, sizes and wall thicknesses. The tube would be inserted in the earth and tests were made to measure water run-off. In 1953, Dr. Chandler received 1,000 feet of unpreforated polye- thelene tubing- from the Carlon Co. The doctor explained that it would have cost several thousand dollars for the company to set up dies to perforate the tubing. The company, he explained, did not wish to spend that money until it was known whether there was a market for the product. Dr. Chandler said the tube was perforated by hand with leather punches when it arrived here after being ordered two years earlier. In the fall of 1953, pipe was laid in the Carver bog of Currie Btaton. the Carver bog of Currie Beaton, tachment that forced a small tun- nel in the ground—the same type tube that is used now, was in- serted. That tubing has a 1% inch inside diameter and a wall thick- ness of .04 inches. Perforation size is Vi inch and there are 12 perfo- rations to a foot—six on the under- side and six on the top. Recently, sections of the original installations were removed for study. It was found that the tube had not collapsed nor had it clog- ged. Dr. Chandler said that mech- anically, aside from installation dif- ficulties, the tube had proved its usefulness In 1954, several hundred feet of thetube was installed in the Car- ver bogs, of the A. D. Makepeace Co., with a modified mouse plow. At the time, experimenters and growers could actually see water run out of the bog into ditches as soon as the pipe was installed. Measurements with tensionometers showed that the drainage m
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