150 



MAINE STATE COLLEGE 



Experiment of Geo. Ingraham, Houltoh. 



Crop, potatoes; on clay loam, hill land : in grass previous 

 season ; cut about one-half ton of hay per acre ; plowed in Fall of 

 1890; ground well harrowed; furrowed with ahorse hoe at time 

 of planting ; fertilizers drilled in the furrow and well mixed with 

 the soil before dropping the seed ; planted to Be: raty of Hebrons, 

 10 bmsh-/.s rer acre. TLe rnst struck the vines early in the 



rotten. TO 



>elow shows the yields of s<: 



d 



I ertilizers applie I. 



*+ S3 



~e v. ~ 

 - t3 = 



■_ _ 



- 

 — - — 



t» _o i - — 



- — — — S- 



O I — - - 



a I - - 





•' — " 



i. — — 

 > - - 



Dissolved bone-black . 



Mitrate of soda 



Muriate of potash 

 Dissolved bone-black. 

 Muriate of potash 

 Dissolved bone-black . 



Mtrate of soda 



Dissolved bone-black ■ 

 Muriate of potash . . . . 



Xitrate of soda 



Xitrate of soda 



Muriate of potash . . . . 

 Xo manure 



:•■; 



100 



500 



100 



500 



150 



500 



100- 



150 



i?: 



100 



457 



473 



405 



433 



422 



425 



215 - 



1;: 



40: 



459 



470 

 465 



417 



4oi' 

 440 



2-;: 



:."3.o 



1 - r a ■ 3 

 154.7 



143.2 



142. 



14,.: 



75.0 



Table showing increase of crop on manured plots ove, 

 unmannred plots and cost of increase per bushel at wholesale- 

 prices quoted above for fertilizers. 



Plots. 



Increase of crop 



per a: re ;e ro 

 fertilizers. 



Cost of fertilizers 



per acre. 



Cost of increase 

 per bushel. 





75-0 bushels. 



$11.00 



14.6 cents. 





-".-; « 



$5.0-0 



10.3 " 





76-7 " 



>0.0) 



11.7 " 





80.8 



SO. '00 



7.4 « 





65-2 



60.. 0' 



7.6 " 





64-0 " 



$3.00 



4.7 " 





66.7 



$2.00 



3.0 «• 











In this experiment IMr. Ingraham judged that one-half of the 

 potatoes were rotten and reported the weight of the sound ones 



onlv. so that no ace :rare estimate can Vie made of the effect of 



