70 SPRAYING AND FUMIGATING 



72 deg. Fahr. than have to take in a direct cold current, 

 however small. 



SPRAYING AND FUMIGATING 



Each of these operations is as important as any of the 

 others. On all bright days from the time the plants are 

 through the soil, spraying may be done, but as in all else 

 in Sweet Pea culture, wise judgment is necessary. No one 

 would surely spray a line of Peas in full bloom; that is to 

 say, the flowers themselves. These should be kept dry. 

 But from the time the seedlings appear above the soil, 

 dewing and spraying may be done, weather permitting. 

 With the earliest July and August sown crop, a good wetting 

 spray should be given several times a day during hot spells. 

 The surface of the paths or alleys between the rows, also 

 the soil, walls and woodwork must be sprayed, all with 

 the object of lowering the temperature. But while a moist 

 atmosphere is detrimental to red spider, strive above all 

 to prevent anything in the nature of sappy growth. At 

 times this can scarcely be prevented. 



In dull, gloomy weather the spraying may be dis- 

 pensed with, and if the air should become overdry, the 

 sprayer or mistifier must be brought into action. When 

 only a slight dewing over is necessary, the automatic air 

 pressure sprayers are employed and the work can be 

 quickly accomplished. 



No insect pest ought to be able to gain a hold. Green 

 aphis, red spider and thrips are the most common and 

 persistent enemies, and the best means of combating these 

 under glass is spraying with Aphine or fumigation with 

 Nico-fume. Twenty sheets of Nico-fume are sufficient 

 for a house 100 ft. long by 30 ft. wide; but directions for 

 the use of these accompany each package or container. 



