THROUGHOUT Canterbury there is an abundance of farms, which, as a result of a protracted programme of cropping without due attention to a suitable rotation; have gradually become depleted of much of their original soil fertility. Under a continued system of incorrect management this depletion has inevitably reached the stage at which further cropping has become uneconomic, owing to reduced yields. When this regrettable stage has been reached something has had to be done-some alteration in the management has had to be made in an endeavour to rebuild the fertility of the soil.
