208 Appendix. 



May 19, % per cent June 2, 6 per cent June 16, no difference June 23. and' 

 little variation from that date until July 29. 



The unplowed portions of the plots which had crops that did not survive 

 the winter, were more or less covered with grass and weeds during the sum- 

 mer. This growth was mowed occasionally and it served in part the purpose 

 of a cover. There was a great variation in per cents of soil moisture between 

 tilled and untilled parts, being from 11 per cent in favor of the former to 2X:, 

 per centin favor of the latter. This variation is discussed in details by Prof. 

 Penny in Bulletin 60, and will not be repeated here. 



KECOMMENDATIOXS. 



Weather conditions play such an important part in the success or failure of 

 clover crops that the amount of seed recommended per acre must be subject 

 to great elasticity. In 1901-2 the weather was most favorable and excellent 

 results followed. In 1902-3 there was unfavorable weather and the results 

 were poorer because of it. The amounts of seed per acre mentioned below are 

 abundant to give satisfaction, providing the soil is at least fairly good and the 

 weather fairly favorable. If the fruitgrower wishes to err on the right side 

 he may sow more seed ; with some crops this will add materially to the expense 

 of the crop, but with others it will not. 



The amounts of seed per acre and crop or combination of crops which are 

 desirable to use are as follows : Rye 1 to li^ bushels ; cowhorn turnips 1 to 2 

 pounds ; dwarf Essex rape 8 to 10 pounds ; red, mammoth or crimson clover 

 15 to 20 pounds ; cowpea 90 pounds ; soy bean 90 pounds ; hairy vetch 40 to 50 

 pounds : alfalfa 30 pounds : hairy votch 40 pounds and rye 30 pounds ; hairy vetch 

 20 pounds and cowpeas or soy beans 45 pounds ; hairy vetch 20 pounds and tur- 

 nips 12 ounces ; hairy vetch 20 pounds, crimson clover S pounds and turnips S 

 ounces ; hairy vetch 20 pounds and red, mammoth or crimson clover 8 pounds ; 

 turnips 8 ounces, rye 20 pounds and red, mammoth or crimson clover 4 pounds : 

 turnips 12 ounces and crimson clover 8 pounds; turnips 12 ounces and soy beans 

 of cowpeas 40 pounds ; dwarf Essex rape 4 pounds and rye 1 bushel ; rape 4 

 pounds, soy beans or cowpeas 40 pounds and rye 20 pounds ; alfalfa 15 pounds 

 and red, mammoth or crimson clover 7i/^ pounds. 



Many other combinations may be used successfully. The object should be 

 to use such a mixture of crops that a part at least shall live over winter. A 

 few of the combinations above contain all fall crops and for that reason are not 

 so desirable as though they contained a part of those that live through the 

 winter and grow in the spring. 



ACKNOWLEDGMENTS. 



The writer takes pleasure in acknowledging the assistance and advice of 

 his predecessor, Prof. G. Harold I'owell. who planned and started the experi- 

 ment of 1001-2 ; to Prof. W. II. Bishop for taking notes on the crops before the 

 writer arrived at the Station ; to Prof. E. Dwight Sanderson for assistance in 

 taking notes. Also to Messrs. Soper, Derby and Cooch for their courtesy in 

 permitting the work to be conducted in their orchards. 



