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Natural Reseeding of Bahia Grass after a Sod is Plowed
Author(s) -
Tabor Paul
Publication year - 1949
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1949.00021962004100120009x
Subject(s) - natural (archaeology) , citation , service (business) , horticulture , agronomy , library science , computer science , history , biology , business , archaeology , marketing
-it with a short nipple. In field operation the nipple slips over the end of the ^4-inch piezometer which extends above the surface of the ground. This holds the probe in an upright position allowing the operator freedom of both hands. Fig. 2 illustrates the electrical circuit on the lower side of the plywood square. A 33-volt hearing-aid battery a is connected to the milliammeter c and to the bolt e which holds the reel on the board. The other side of the milliammeter is connected through a limiting resistor b to the collar which holds the pipe to the board. In practice the equipment is set on a jHi-inch piezom• eter, and the wire is lowered either by the reel or by hand until the milliammeter registers. The distance to the water table is then read from the graduated wire. The probe cost less than $10.00 for materials and took about three hours to make.—JAMES N. LUTHIN, formerly Iowa State College, Ames, Iowa, now University of California, Davis, Calif.