Reports to the Board of . 1 gricidtitrc. 35 



The only other phiu fouiul to be successful is the use (jf bisul- 

 phide of carl)on or c«rl)olic luid, the former iuject^Hl into the j^)un(l. 

 This treatment on a large scale would he costly in (treat Britain 

 and need not be refem-d to here. 



(tius-lime has l>eeu found of benefit, but to be so it has to be put 

 on stronj^ and may damaj^e the next year's crop to some extent ; at 

 other times it is a complete failure. Gas-lime to be of u.se muat l>e 

 put on so stronj? that the land often ro<iuires a yejir's rest. 



All cabbage stumps and other roots after an attack should bo 

 bunit. 



A dressing of su]>er])hospluite of lime has been found beneficial 

 on the Continent. 



Broad-casting soot and lime around the plants soon after planting 



Fio. 4. 



StaD o( pUnt puaing through curl dUc 

 Iring cliN« on the ground. 



A, StAr-kh*|>ad illt lo u to allow ■tern 

 to pM« through cant ; B, Silt to poali 

 ■tem up to A. 



out has also met with success in preventing the fly fn»m laying eggs, 

 but is by no means certain in action. 



By far the l)est plan is to give up growing caViKige for two years 

 on the land and phmgh deeply, or if hand cultivation dig two spits 

 deep. 



If it is necessary' to continue to grow rabl»age again and again on 

 land, attention should Ihj jwid to the methcKl of di.<*cing tlie phint-s 

 when Wing set. A small amount of soot and lime may ah»o bo put 

 in at dibbling time with the young jdants. 



Carbolic acid in soft sojtp and water as follows wa-s found tiie 

 next be,st ri'innly and preventative after the tarrecl discs in a large 

 series of exi>eriment« in America. 



I. 2 



