173 



]i:h1 liiiii i<llr diiriiii; the siiiiiiik-i-. :i s]»;ii'(' oI' 10 feci hciii^- Idl ImIwccii 

 llic two liahcs. I-'crtili/cis coiisisl iiii; (»r l\;iiiiil, acid |»li(»s|)liat«', and 

 cotton seed meal, used sillily or all three t(»;i('tli('i, wcic employed on 

 live of tlu' jdats, the other two reeeJN iiiji' no fertilizer. 'rhe])lats were 

 sown to wheat (a mixture of l"alt/, and h^iU'aster) at tlie rate of lA 

 l)ir><hels per acre. 1'he results showed an UA'craftC increased \ ield of 

 1(» Itushels of wlieat ])er a('re wliere ])ea vines had been jdowed in. 



I n lss;»-!l(» the same seven plats were treated as in the precedino- year, 

 with the only ditterence that the pea vines when phjwed in wen* well 

 matured. The winter "was severe on all winter i;rain," and the wheat 

 ji'rowinii' on the ])]ats w here no pea vines had been ])lowe(l ninler was 

 somewhat injured. '• The yields on the portion with peas were very 

 j?ood, althoujih not as good as the year before." The fertilizers applied 

 and the vields of wlieat are tabulated as follows: 



Yields ofivheatper acre (1890). 



Xo. 



AiJpliratiou of fertilizer per acre. 



None , 



^00 i)oiiii(ls kaiiiit 



:t()0 pounda acid pliospliate... 

 175 pounds acid i)liosphate. .. 

 7i pounds cottonseed meal 



~i pounds kainit 



None 



TOO pounds cotton-soed meal 

 :!.">() pounds acid pliospliate. 



% 



C :!.">() pounds acid pliospliate. . 

 < IT") pounds cotton-seed meal 

 ( 75 i)ounds kainit 



Average yield per acre . 



Cost. 



2.70 



3.60 



5.88 



Yield per acre Yield Iter aci 

 without pea -Willi ])ea 

 vines. vines. 



Stiih. Lbs. 



n HO 



10 



32i 



40 



52J 

 44 



Bti<ih. Lha. 



20 50 



21 40 

 25 50 



24 



50 

 42J 



25 



53 



"Especial attention is called to the yield on plat 3 with pea vines. 

 \{ Avas the largest yield of any plat, and the cost of fertilizer moderate. 

 This was the plat that produced the largest yield the year previous. 

 So far this experiment i)roves that acid ]»hosphate used with ])eas is 

 the eliea])est and bt^st fertilizer for wheat." 



North Carolina Station, Bulletin No. 77/> (Technical Bulletin No. 2), July 1, 



1891 (pp. 11). 



INVESTIGATIOXS of the ABSKNITES AVITH KEFERENCE TO 



INJURIES TO FOLIAGE, B. W. KiLGORE, B. S. — This is a report of 

 investigations from a chemical standpoint to determine the cause of 

 injury to foliage from tin' ai»itlication of arsenites, and to lind a means 

 for its pre^('ntion. The exix'iimeiits were made in July, 18!M). The 

 eonelusious readied agree in general with those obtained from inde- 

 ])eii(lent exi)eriments at the Iowa Station, an account of which was 

 ]»ublished in J5ulletin Xo. 10 of that station (see Experiment Station 

 llecord, vol. ii, p. 215). 



