020 



tulxTs of Mio same varieties planted after storagre in a root cellar. 

 Wlieic tiie sprouts were 2 iiioiitiis old before planting the results 

 showed an increase in yield and in earliness. 



Ohio Station, Bulletin Vol. IV, No. 9 (Second Series), December, 1891 (pp. 35). 



Apple scab, F, Detm?:rs, li. S. (pp. I87-11H', plates 3). — An illus- 

 trated account of Fuskladium dendritkum^ which was very jirevalent 

 in Ohio in 1891. 



The spraying of orchards, W. J. (Jreex (pp. 19.3-21S. plates 0). — 

 This includes an account of experiments in si)raying to prevent ai>ple 

 ocab, the plum curculio, and the "shot hole" fungus of the phim; 

 directions for the preparation of fungicides; and a list of manufacturers 

 and dealers in .spraying apparatus. 



iSprai/ing to prerent apph- scab (pp. 19.3-213). — With a view to making 

 spraying experiments on a commercial basis an orchard of about 3(» 

 acres in the vicinity of tlie station w as leased. One third of this orchard 

 contained Xewtown Pii)pin ap]»h's. the (tther varieties being Northern 

 Si)y, Kliode Island Greening, Baldwin, .Jonathan, Westheld Seekno- 

 further. Smith Cider, BellHower, and Uoxbnry Russet. Similar experi- 

 ments werecarried on nnder the direction of the station in two other 

 localities. About 1,(KK> Itnshels of apples were gathered from the trees 

 inclnded in the ex[>eriment near the station, and more than loo bushels 

 were as.sortetl and count^'d in nniking up the lecord. In tlu' (»tlier jilaces 

 the work was nearly as extensive. 



In that ]»art of the orchard containing Newtown I'i]»pins the follow- 

 ing mixturi'S were conii)ared: Ammoniacal carbonate of c«)pper, modi- 

 hed eau celeste, dilute Bordeaux mixture (cojipei- sulphate 4 pounds, 

 lime 4 ponnds, water ."»n gallons), in<'cipitated carbonate of copi)er, and 

 aniuinniacopper sulntion. These w«'re a]>plied April S, May 7 an<l :.'(•. 

 . I line 1.3 and 1!>. and .lnl\ Kl. iMning May and June the weathei- wa-- 

 very rainy. 'I'he relative efliciemy of th«' dilferent compounds is shown 

 in the following table: 



Hiliitiri ifftiutictj of Hpray'utii iiiiiijioiiniln. 



C<ini|Hiiiiiil iiscil. 



Irte 

 from scali 



Ai-i-L-s 



.s<iiiii-\vli:il 



Hraldiy. 



I Per cent. 



Aiiniioniiiciil fjirlioimtc of copper 5 



Mnditifil eau ffli-sU- 1'.' 



UiliiU' Borilt'aiix niixtiirc l-'> 



I'recipitatt'il ciirbuiiatt' of copi>er 14 



AiiiDU)iiia-('<ip|>i-r .toliitioii 1 



I'lisprayi'tl 



Per ernt. 



Apples 

 very Mcaliliv 

 mill iininiir 



ket4ibl<:. 



Per cent. 



Calculations of material and labor are given which indicate that the 

 dilute Bordeaux mixture is the cheapest of the eomi»onnds used, whether 

 applied alone or in combination with Paris green or Loudon puriile. 



