UNSOUND SYSTEMS OF TILLAGE 69 



(2) The system is too risky. A backward 

 season delays the sowing of the crops, resulting 

 in diminished yields, whilst a wet harvest may 

 result, and often has resulted, in the year's 

 tillage crops being partly, or wholly, destroyed. 



(3) The land is only cleaned once in every five 

 or six years. 



(4) The system of cropping is not sufficiently 

 intensive, there being two whole winter periods 

 when the land is uncropped, and a third period 

 when the winter-sown crop, wheat, is not 

 sufficiently advanced to prevent loss of soil 

 fertilisers. 



(5) The great loss of nitrogen and other 

 manurial ingredients on the uncropped land in 

 winter is intensified by the high winter rainfall 

 and the high winter temperature. 



(6) There is far too great an area under roots, 

 which, because of the expense involved and the 

 scarcity of hand labour, form an unprofitable 

 crop. Roots are, also, on account of the many 

 pests which attack these crops, a very risky 

 crop. 



(7) The rotation does not provide sufficient 

 green feeding, especially for ewes and lambs in 

 spring-time, and does not yield sufficient 

 albuminous food for general feeding. 



(8) More atmospheric nitrogen should be 

 fixed in the soil by the growing of more 

 leguminous crops. 



