SOD KNIFE FOR ANHYDROUS AMMONIA

摘要

A constant attitude sod knife for injection of anhydrous ammonia to the soil which includes a ground opening blade structure, a gas injection tube disposed at the heel or trailing of the blade and covered by a diffusion director vane or wing and subsequently by a tamping or compaction vane or wing which serves to restrict emission of gaseous materials to the atmosphere and a spring biased carriage facilitating a constant running attitude whereby the blade may change elevation without changing attitude, and an impact disengaging connection and depth control wheel for the carriage.