,|2S 



.•/,\ lAOXiKMIC i:\/ (KMOI.OCV. 



prolilahlc, ;iii(l ;ii c ;il\v;i vs to he piclciicd li i dccomposinj';' vej>;e- 

 taljlc mailer, lioiii llic insccl slaiul-pdinl. The details of the 

 ap[)li( at ii )iis lo ln' made arc loiiiid wIk re llic iiiscc is themselves 

 art- Ire. lied. Where harn-yard manure niiist he used, it i^ always 

 a tjd'iid plan Im mix it with air-slai ked lime, laud plaster, or kainit, 

 and this can he done as List as it is made in the slahle. It v\ill 

 add to its value, will hold the .umnonia, and will make the mixture 

 an imdesirahle one lor insects to live in. 



< Irass laud may he kept loler.ihly (rec liom uude^uahle pc-sts 

 infesting the I'oots l)\' usiui; ;is lertili/er a mixture ol oni- hun- 

 di ed I lu diels ol lime and one ton ol kaiml slaked loL;ethei". This 

 n>ay he ap|)lied in the spring, .nid will a< I as a stiumlant as well 

 as destroy many of the insects inhaliiline die soil. 



Theic arc yet other ways iu uliii h we c;m head oil insects ; for 

 iuslauce, in llu; seleclion of ihe time ot |)lantint;. It happens 

 rre(|ueutlv that iuseds make iheir appearance at a very deliuite 

 time, and iu the or(liu,u\' (ourse ol nature have only a few days 

 within which they umst lav their eiji^s and provide for the con- 

 tinuance of their kind. If the\' do not find the ( ulti\ated food- 

 plant, they are compelled to make use of some suhstitute wild 

 pi ml, on which ihey do not thrive as well ; or ihcy may not he 

 aide to oviposit at all, and a lari^c proportion will perish without 

 hriui; ahle to reproduce their kind. 



When the lile histor\- ol a seiiouslv injurious insect is known, 

 it will often pa\' to a(la|)l our larm practice so as to ])re\-ent injury. 

 I'Or instance, experience has provetl that the I lcssiandl\- apjiears, 

 ready to lay cil^l^s lor a late lall hrood, durme the earl\' days of 

 Septemher. I'>v dela\in;4 planting until aller the middle of that 

 month, or e\'eu later where the lalit ude makes this feasihie, the 

 insects are compelled to la\' then c^i^s in grasses other than 

 wheat, or m the xoluutcer i^rain that the\' imd in fields or ah^ntj 

 the roads. 



Crauherry growers take ad\autae(' ol their knowledi^c of the 

 lile history ol the I'lras inlestine that crop hy keeping the l)Otj;;s 

 covert'd with water until after the middle of May, thus compelliiitj' 

 the moths to lay their en'^s on other plants helon^iii!^ to the same 

 natuial l;uuil\'. 



In a similar \\a\' we can sometimes induce the inserts to ovi- 

 posit in a trap crop i)lanted es])ecially to attract them and pro- 



