73079347
Mar 5, 1976
Dec 27, 1977
ARTICLE FOR AFFORDING A VISUAL INDICATION OF THE WATER CONTENT OF SOIL IN WHICH A PLANT IS GROWING INCLUDING AN ELONGATE RIGID PLANAR BODY THAT IS POINTED AT ONE END TO FACILITATE PARTIAL INSERTION INTO THE SOIL AND A WICK-LIKE MEMBER FIXED TO THE BODY AND PRODUCING A VISUAL EFFECT WHEN WET THAT IS DIFFERENT FROM THAT PRODUCED WHEN DRY
Chemicals