18 L'.\i\KRsiTV oi- Xkw I Iampshiri-: | Sta. P.ull. 324 



Yields of hay were increased In liiniiii^ or by the use of basic slag, 

 except for the 5(J0-i)ound lime apjilication. Rather large increases are 

 noted for the two- and four-ton a])])lications. although the two-ton apph- 

 cation on plots in which no potash was used fall considerably under the 

 two-ton ap])lications with normal fertilization. The 500-pound lime appli- 

 cation apparently failed to stimulate yields comi)aratively, although a rela- 

 tively large increase was noted for the half-ton ap])lication. as well as with 

 the fertilizer carrying basic slag as the source of i)hosphoric acid. 



In comparing hay yields with those of oats discussed previously, it 

 might be said that the hay crop, because of increased clover, responded 

 more to lime and lime-bearing substances than oats, but that the oat crop 

 was affected more by residual fertilizer effects. 



Lane Farm Oats and Clover 



Not all of the oat and clover crops of the 1 -ane farm were harvested by 

 plots and weighed, because of poor or variable stands. For this reason 

 no data concerning them are presented. There were no significant dif- 

 ferences or trends in the three oat crops that were taken, nor in the two 

 clover crops that were harvested and recorded. 



Potato Measurements, Jackson Farm 



During the 1936 season, measurements were taken of pf)tatoes grown 

 under different fertilizer treatments. In this study measurements were 

 made of the maximum length and width of relatively large numbers of 

 tubers to see what differences might be found. The results are expressed 

 in the ratio of length to width in Table XIX. 



TABLE XIX. Ratio of length to width of potato tubers grown on 



Jackson farm in 1936. 



Treatment Xn. tubers nieasun il Ratio. ltiiL;tli to widtli 



1 1 . 4-8-7 check 479 1.305 



1 T. 4-16-7 239 1.34 



1 T. 4-S-14 249 1.23 



1 'I". 4-16-14 268 1.27 



2 T. lime 1 T. 4-8-OL 640 1.435 



The data show that increasing pDtasii tends to make a shorter, block- 

 ier i)f)tato. and increasing the phosphoric acid reverses this trend. Leav- 

 ing the potash out of the fertilizer accentuates the length of the tubers 

 prf)duced. 



