Green Manure 



Among the leguminous green manures are in- 

 cluded red, white, and crimson clover, afalfa, 

 samfoin, vetches, serradella, and lupins. The ex- 

 posed portion of clover, afalfa, and sainfoin is 

 too valuable to be used for manure only, and is 

 invariably given to stock. But the stubble and 

 roots generally contain enough humus and nitrogen 

 for a wheat crop without any addition of farmyard 

 manure. 



The nitrogen which is found in the roots and the 

 nodules is transformed quickly enough under the 

 action of ferments into nitrate. 



The vetches are often used as grazing, but also 

 are frequently ploughed in as green manure ; serra- 

 della is treated in the same way. They are both 

 sown in the wheat and are extremely useful on 

 most soils. 



On soils poor, but not calcareous, yellow 

 lupins should be used in preference. Lupins are 

 of no use as food, but as green manure they 

 are extremely valuable and would enable the 

 greater part of the waste land to be cultivated. 

 They grow so freely that an ordinarily good crop 

 gives to the soil twenty tons of manure. From 

 this one can judge their usefulness in reclamation 

 work where no farmyard manure is available. 

 For this purpose they should be sown with slag 

 and potash. 



On light calcareous soil, however, one would use 

 white or crimson clover for preference, buckwheat, 

 rye, turnips, etc., whilst in strong soils vetches, 

 horse beans, red clover, and rape. 



This little table shows the percentages of 



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