SUB-SOIL PLOWING docx
... its form injured. Roots are turned aside by a hard sub-soil, as they would be if received by the surface of a plate of glass. SUB-SOIL PLOWING Describe the Mapes plow. Why is the motion ... as hoeing, plowing, etc. [AN] principle, the sub-soil plow renders the compact lower soil sufficiently fine for the requirements of fertility.[Pg 234] Why are the benefits of sub-soiling ....
Ngày tải lên: 29/06/2014, 15:20