FIELD EXPERIMENTS. 39 



The soil should be prepared as for corn or beans and should 

 be free from lumps and clods. 



Fertilizers carrying phosphoric acid and potash are essential 

 and on good land no nitrogen is needed if the soil is inoculated 

 for root tubercles. 



Sown in drills i6 inches apart, about 3 pecks of seed is 

 needed per acre. If drilled with a grain drill or sown broad- 

 cast more seed, perhaps a bushel per acre, will be needed. 



Soy beans can be grown with corn, mixing the seed at the rate 

 of 10 quarts of corn and 7 of soy beans. Thus seeded the 

 drills should be about 3 feet apart. 



When sown in drills they should be cultivated the same as 

 common beans. In case of narrow spaces between drills, a 

 hand wheel hoe does the work rapidly and well. 



It is doubtful if it would be profitable to grow soy beans 

 for seed in Maine. The varieties that will ripen seed in this 

 climate make small vine growth. 



The crop is best adapted for feeding green or for silage. 



The crop can be harvested by hand or machine. For silage 

 a grain reaper and binder leaves it convenient for handling and 

 for the silage cutter. 



A yield oi 8 tons of green crop is an average in average 

 seasons on average soil. 



Eight tons of soy bean fodder carries about the same amount 

 of protein as 12 tons of corn in milk ready for the silo, but it 

 carries only a little more dry matter than 8 tons of corn. 



If grown with corn, it can be cut with the corn, by hand or 

 a corn harvester. 



When grown by itself for silage, it is best mixed with corn 

 at time of cutting into the silo. About 3 parts corn to 2 parts 

 beans is a very good proportion. 



Less protein (the most expensive part of commercial feeding 

 stuffs) need be fed with soy bean and corn silage than with 

 corn silage alone. 



Spraying with Sitephate oe Iron Soijttion to Control 

 Wild Mustard in Grain and Other Sown Crops. 



There are three quite closely related plants of the mustard 

 family that are troublesome weeds, particularly in sown crops, 



