1022.] 



Trials of Spring Cabbage. 



1121 



war times multiplied to an enormous extent, notably the winter 

 and March moths. 



The most efficacious remedy for all the leaf-eating caterpillars 

 is spraying with arsenates of lead and zinc before the bloom 

 opens and after it has set at the rate of about 1 lb. to 16-20 

 gallons of water.* 



It is also of importance that the trees should be washed with 

 a cleansing wash during the resting period. Many good washes 

 are obtainable, such as standard lime-sulphur, caustic soda and 

 pure lime wash. 



The last has many advantages to recommend it. Tt is readily 

 obtainable and easily made up, the operator can always see where 

 he has sprayed, and there is little danger of missing portions 

 of the trees and bushes. Observations and experiments seem 

 to prove that the later the pure lime spraying is deferred the 

 better the results. Information on spraying is given in the 

 Ministry's Leaflet No. 352 (The Control of Rests' of Fruit Trees 

 in Gardens and small Orchards). 



The lime is washed off by rain later in the season but in many 

 districts it is a valuable addition to the soil and must have a 

 beneficial effect as affording a base wbere soils are already very 

 acid and in need of lime. 



One of the worst enemies of the apple grower of to-day is the 

 capsid bug,! an insect which punctures the fruit at an early 

 stage rendering it unsightly and unsaleable when mature. This 

 insect has already appeared in the north. The only wash which 

 has yet been found of any service against this pest is nicotine 

 and soap and the spray must strike the insect to kill. In the 

 south much harm is being done and the pest is spreading. Suc- 

 cessive broods appear and several sprayings are necessary where 

 the pest has once got established. 



****** 



TRIALS OF SPRING CABBAGE. 



J. C. Wallace, 

 Agricultural Institute, Kirton, Boston. 

 The growing of spring cabbage for market is a very impor- 

 tant industry in the county of Holland (Lines). The crop is 

 frequently a very profitable one, but occasionally there is a 

 slump in the market, as in the spring of 1920, when many 

 acres were ploughed under in this district. 



* See Leaflets Xos. 263. 264. 

 t See Leaflet No. 319. 



E 



