6 



>< 



/ 



To use the tool, place the tarred paper on the end of a section of a log or 

 piece of timber and first cnt the lower edge into notches, as indicated in fig. 4, 

 using onl.y one angle of the tool. Then commence at the left side, and place the 

 blade as indicated by the dotted lines, and strike at the end of the handle with 

 a light mallet, and a complete card is made. Continue in this manner across 

 the paper. The first cut of every alternate course will make an imperfect card, 

 and the last cut in any course may be imperfect, but the other cuts will make 

 perfect cards if the tool is correctly made and properly used. 



The cards should be placed about the plants at the time of transplanting. To 

 place the card, bend it slightly, to open the slit, then slip it on the center, the 

 stem entering the slit, after which spread the card out flat, and press the points 

 formed by the star-shaped cut snugly 

 around the stem. r N 



A Wisconsin grower protected 7,()IK) 

 plants and secured a splendid crop, while 

 unprotected plants nearby would have 

 been a complete failure if the maggots 

 had not been picked off by hand. Others 

 have reported similar success. One re- 

 ported having lost only 25 plants out of 

 10,000 to 15,000 that he protected with 

 the cards, where ordinarily he would 



have lost from 75 to 90 per cent of the 

 Fid. o.— Tarred paper card in 

 outline, one-lialf size (after <^^op. 



The tarred cards are applicable to 

 cabbage and cauliflower onl}-, but it is claimed hy those 



who have employed them 

 that they are cheaper, 

 more practicable, and 

 more efficient than any- 

 thing else yet devised for 

 preventing the ravages of 

 the c a b b a g e m aggot. 

 Success in using them is 

 dependent upon their be- 

 ing properly applied, io fii tigJitly, so that the fly is unable to obtain 

 access to the stem for the deposition of lier eggs. Cards must be re- 

 newed and their use continued for ea('h maggot year to be effective.^ 



Fio. 4.— Showing how tool is used, dotted line 

 indicating position of edge of tool (after 



(iolT). 



Fig. 5.-T00I 

 for cutting 

 cards, about 

 one-fourth 

 size (after 

 Goff). 



THE IMPORTED ONION MAGGOT. 



{I'efjODii/a ci'jteloriiiii Meade. )- 



The name "imported onion maggot" is used for this insect because 

 there are other onion-feeding maggots in addition to the seed-corn 



' A Wisconsin firm has used as many as 20,000 of these cards a year, and esti- 

 mates the cost of material and labor at about $1 for the protection of 1,000 

 plants. This shows its practicability on a large scale. 



2 This species is commonly referred to in literature as Anihouiyut and Pliorhia 

 ceparuin Bouch6. According to Mr. Coquillett, it is difiicult to decide, fioiu tiie 

 description of the adults, whether or not l'><)nch('''s and Meade's sjiecies are 

 identical. 



