. Cranberries; : the national cranberry magazine. Cranberries. Determining Irrigation Needs With Tensiometers By: ARTHUR G. PETERSON Extension Specialist, Soils, College of Agriculture, University of Wisconsin. (Editor's Note: The following article from "The Badger Common 'Tater" is reprinted through the suggestion of Dr. F. B. Chandler of Massachusetts Cranberry Ex- periment Station, as being of importance to cranberry growers. In the reading of it, such questions as the following might arise: Q. How important is the tensio- meter in controlling water in cran- berry bogs? A. The ten
. Cranberries; : the national cranberry magazine. Cranberries. Determining Irrigation Needs With Tensiometers By: ARTHUR G. PETERSON Extension Specialist, Soils, College of Agriculture, University of Wisconsin. (Editor's Note: The following article from "The Badger Common 'Tater" is reprinted through the suggestion of Dr. F. B. Chandler of Massachusetts Cranberry Ex- periment Station, as being of importance to cranberry growers. In the reading of it, such questions as the following might arise: Q. How important is the tensio- meter in controlling water in cran- berry bogs? A. The tensiometer is as important in moisture con- trol as the thermometer is in tem- perature control. Q. This article refers to an increased yield of potatoes with improved water management — would this be true with cranber- ries ? A. Yes, water management has more to do with cranberry yield than any other management problem. Q. Would over irrigating waste water and fertilizer on cranberry bogs ? A. With the present drain- age in cranberry bogs neither water or fertilizer would be lost in any appreciable quantity. How- ever, excessive irrigation may cause root damage. Each year more potato growers are finding that it pays to have an irrigation system for a supple- mental water supply and within the last generation revolutionary improvements have been made in irrigation equipment. However, these advances have been primarily concerned with attaining more eco- nomical delivery of water to the surface of the ground and do little to solve the problem of control- ling the underground moisture in the root zone. This is the moisture that determines the yield and the profits for the grower, but it must be measured before it can be con- trolled. Until recently little had been accomplished since the days of the Ancient Egyptians in measuring soil moisture. The rod or probe is still commonly used and this gives some idea of moisture penetration Tea but no indication as to when the next irrigati
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