Dormant oils have been found to be effective mite controls if 

 applied properly. Since they are effective against the overwinter- 

 ing mite and aphid eggs, they should be an effective part of an in- 

 tegrated control program. 



In Canada, work was conducted to determine the fluctuations of 

 herbivorous and predator mites in apple orchards during 1955-1957. 

 It was found that herbivorous mites were more numerous in plots 

 treated only with fungicides than in plots treated with insecticides 

 and fungicides. The predators were found to be Inversely propor- 

 tional to the herbivorous mites in the latter plots. 



I 

 h e r b i V 

 materi 

 mi nd , 

 bar of 

 orchar 

 harml e 

 were h 

 ci des 

 i n g eg 

 wi th t 

 popula 

 duced 

 treate 



I 

 daceou 

 c i d e s , 

 were a 

 trol 

 chemi c 

 practi 

 Japan 

 worked 

 part 



t is w 

 orous 

 al s ar 

 certai 

 spray 

 ds. T 

 ss to 

 armful 

 showed 

 gs tha 

 he har 

 t i n 

 this n 

 d with 



n Wash 

 s mite 



fungi 

 ble to 

 f i n s e 

 al s wh 

 ces (d 

 found 



for r 

 f the 



ell k 

 mi tes 

 e use 

 n wor 



chem 

 hey w 

 benef 

 . A 



a mu 

 n i n 

 mf ul 

 f her 

 umber 



broa 



i ngto 

 s wer 

 cides 

 esta 

 cts w 

 i ch c 

 osage 

 that 

 educi 

 seaso 



nown that 

 will rem 

 d that ar 

 kers proc 

 icals on 

 ere able 

 i c i a 1 ins 

 compari so 

 ch lower 

 either th 

 material s 

 bi vorous 

 well be! 

 d spectru 



1 n mos 

 a i n b e 1 

 e toxic 

 eeded t 

 the pre 

 to show 

 ects an 

 n of or 

 level 

 e untre 

 . Tha 

 mi tes , 

 ow the 

 m pesti 



t appl 

 ow an 



to na 

 inve 

 daceou 



that 

 d pred 

 chards 

 f herb 

 ated c 

 untrea 

 but th 

 number 

 cides . 



e grow 

 econom 

 tural 

 stigat 

 s mite 

 certai 

 aceous 

 treat 

 i vorou 

 heck , 

 ted ch 

 e natu 

 s f oun 



ing a 

 ic le 

 enemi 

 e the 

 s i n 

 n spr 

 mi te 

 ed wi 

 s ml t 

 or th 

 eck h 

 ral e 

 d in 



reas of 

 vel unl 

 es . Wi 

 effect 

 Nova Sc 

 ay mate 

 s , whi 1 

 th inno 

 es and 

 e orcha 

 ad a hi 

 nemles 

 the ore 



the world 

 ess spray 

 th this in 

 s of a num- 

 otia apple 

 rials were 

 e others 

 cuous pesti- 

 overwi nter- 

 rds treated 

 g h initial 

 soon re- 

 hards 



n , wor 

 e able 

 , and 

 blish 

 ith th 

 onserv 

 s , tim 

 an int 

 ng pes 

 n, due 



kers f 

 to su 

 hortic 

 a prog 

 e biol 

 ed the 

 ing an 

 egrate 

 t popu 

 to th 



ound a sim 

 rvive appl 

 ultural sp 

 ram which 

 oglcal con 

 predatory 

 d method o 

 d control 

 lations, e 

 e conserva 



liar situation, In which pre- 

 ications of several insecti- 

 rays used on apples. They 

 integrated the chemical con- 

 trol of mites by selecting 

 mites and by altering spray 

 f application). Workers in 

 program on apple pests also 

 specially during the latter 

 tion of predator complexes. 



wi th 

 been 

 1 1 V e . 

 rate 

 duced 



The effects of applications of microbial preparations together 

 sublethal insecticide doses on insect populations has also 

 investigated. Such a combination was found to be very effec- 

 The pest population density was not only decreased, but its 

 of reproduction and the survival of its progeny were also re- 



The experimental miticide Plictran was found to control the 

 European red mite on apples and pears in Italy without adversely 

 affecting an important predator, hence a reduction in the number 

 of spray applications could be used since the predators were not 

 interfered with. 



An integrated control program in Swiss orchards over a 6-year 

 period permitted a reduction of about half of the insecticide and 

 acaracide treatments normally needed 4n a chemical spray program. 



