Studies of the Rotary Tiller and Subsoil Breaker with a Chisel type Subsoiler

(III) Field Test of Beer Brewing Barley Using Experimental Apparatus

Abstract

Along with the rising popularity of introducing large scale machinery in to the field and the loss in opportunity for tilling deeper soil due to the wider adoption of rotary tillage, it is now recognized that unfavorable field conditions for plant cultivation are spreading as hard layers form in the subsoil directly below the cultivated surface soil.
The purpose of this series of papers is to develop some kinds of implement in order to improve the above circum stances.
This paper describes the results of field tests of beer brewing barley under several experimental combinations using the rotary tiller and subsoil breaker with a chisel type subsoiler.
As a result, the fresh plant weight and dry plant weight of beer brewing barley increase linearly as working depth increases. Their correlation coefficients are over 0.8. The fresh plant weight and dry plant weight of beer brewing barley increase linearly as the crosssectional area of subsoil breaking becomes wider.
It can be suggested that the rotary tiller and subsoil breaker with a chisel type subsoiler can play an important role in plant cultivation in the field.