PEA THRIPS 241 



pounds of quassia chips in five gallons of water, after 

 steeping overnight, for half an hour, and dissolve in 

 it as it cools five pounds of soft soap, diluting to one 

 hundred gallons with hot water. Apply, when cool 

 enough, by means of a knapsack machine, coating 

 the plants in every part with the finest possible film 

 of the liquid, repeating at weekly intervals once or 

 twice. 



Dusting with tobacco powder whilst the Pea 

 plants are damp with dew has a good effect, repeating 

 the dose occasionally. In the case of dry weather it 

 will be advantageous to sprinkle the plants with water 

 before dusting with the tobacco powder. 



As Peas are most liable to thrips in hot and dry 

 positions, it is good practice to mulch the ground on 

 both sides of the Pea row with short partially decayed 

 manure, and water the Peas liberally in dry weather, 

 pouring the water on the mulching by the side of the 

 rows. After the pods are formed or the flowering 

 assured, a sprinkling of finely crushed nitrate of soda 

 on both sides of the Pea row will help the plants, 

 about an ounce being used per yard run of row. 

 Syringing the plants overhead in the evening of hot days 

 is very advantageous to the Peas, as though little will 

 remain on the foliage, the ground is made moist and 

 the atmosphere about by evaporation, water being 

 very hateful to thrips, many being washed off by the 

 syringing and not a few destroyed. 



After an attack of Pea Thrips, Peas should not 

 be sown the following year near the infected spot, and 



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