122 



The Principles of Fruiirgrowing 



corn at the last cultivation, but in orchards it is ordinarily 

 sown from the middle of July to the middle of August in 

 the North, on a well-prepared seed-bed, and is then lightly 

 dragged in. In old orchards, six quarts to the acre is 

 sufficient seed; in the open lands, about eight quarts is 

 the quantity required. 



Other plants are used as cover now and then or in 

 particular regions, as alfalfa, velvet bean and beggarweed 

 in the South, soybean, oats (mostly in mixture), cabbage. 

 In the North, the soybean should be sown early and tilled 

 for a time. Alfalfa is sometimes used as a cover in orchards 

 (as in Fig. 24, from the Lewiston-Clarkson region). If 

 irrigation is available, it may be an acceptable crop for 

 providing abundant herbage to plow under. Under usual 

 conditions, it is likely to be kept too long on the land. 



Paddock gives chemical analyses of cover-crop plants, 

 showing also date of seeding and taking samples, yields 

 of green crops and air-dry roots to the acre : 



Seed sown 



Sample taken 



Pounds green tops 



Pounds air-dry roots 



Total yield 



Pounds nitrogen — 



In tops 



In root 



Total 



Pounds potash — , 



In tops 



In roots 



Total 



Pounds phosphoric acid — 



In tops 



In roots 



Total 



Cowhom 

 turnips 



July 22 

 Nov. 15 



11297 

 *20522 



31819 



64 



45 



109 



Rape 



80 



62 



142.6 



14.3 

 11.7 

 26.0 



July 22 

 Nov. 16 



26620 

 864 



27484 



116 



13 



129 



148 



13 



161 



41.8 



5.1 



46.9 



Crimson 

 clover 



July 22 

 Nov. 22 



18800 

 413 



19213 



128.2 



6.2 



134.4 



84.0 



4.2 



88.2 



59.2 



2,0 



61.2 



Red 

 clover 



July 22 

 Nov. 22 



6909 



1312 



8121 



69.8 



33.2 



103.0 



46.5 



9.9 



56.4 



18.9 

 10.1 

 29.0 



■■■The turnip roots ■were weighed in their natural state just after -being du?; 

 thic is therefore, not air-dry weight. 



