144 PRACTICAL FARM CHEMISTRY. 



oats and wheat. It may be sown with the oats and 

 plowed under by August 1st of the following year 

 for the succeeding wheat crop. Then apply a mod- 

 erate quantity of the mineral plant foods as sug- 

 gested before, and but little additional manuring 

 with yard manure will be required to maintain our 

 standard of soil fertility. If the clover, however, 

 has failed to catch, on account of poor seed, or neg- 

 lect to sow it, it will yet be time between spring and 

 wheat sowing to grow and plow in one or two crops 

 of ordinary field peas. Plant thickly enough to 

 have the whole ground covered, and plow under 

 when fully developed. The ashes, phosphates, etc., 

 may be applied before the first pea crop is sown, 

 and will then help to bring out a large growth of 

 vines to be plowed under. 



This green manuring is usually the best and 

 cheapest way of furnishing the needed nitrogen, 

 when we have no yard manure, or not enough of it. 

 Still if we have a good muck bed, easily accessible, 

 we may make use of it in the preparation of artifi- 

 cial yard manure, as told in Chapter Nineteenth. 



