| Show LLY APHIS ARE TWO INJURIOUS R TO TREES rd ests H has resulted in great be used to plant only clean tive stive treatment known rown among those affected with a rown gall should have the roots dip od in bordeaux mixture as aa a pro pre aution before setting thorn them in the tha woolly aphis seems to be ovar ovary hero era present on tile the roots of 0 tar or hard trees tree ast as well as very commod 11 ur or y kotock young or old troea trees badly affected y woolly aphis are apt to bear a oble appearance tho the loaves leaves will pear palo pale and yellowish the th in pet ct la Is especially injurious to young rees ees it tho the tree lives a few years lioy boy will likely manage to got along notty roots boota caused by woolly aphis the tha smaller trees tract are one year trees the larger are ara two year trees a spite of the injury caused by the ln in hect most moat of tho the insects confine heir attention to the roots where bey will commonly be dowid at all eacona on roots to a depth of a toot ir r more but some come of them infest the tha ark of tho the trunk or branches and hoota coming from the roots they tre ire often seen about tho the margins ot of or at the forks of branches chere while finding food they ara nore or lose less protected thero thera to la ix lowny cotton lilke hike secretion from the tha ody ot of the insect which gives IL nass of them the appearance of blu ash ah white mold the insect insect multiplies throughout the milder parts of tho the year by the birth of living young which are produced aWa from wingless females so the soil becomes mirly fairly lousy with them in time the insect spreads rapidly toward tho the approach of winter by the appe appearance aranco of at a generation of winged females which fly about assisted in their travels by tho the winds the result to Is a wide vide distribution of the insect cheso in turn bring forth a go generation lon ot of mates males and females A winter egg la in soon deposited on the tha bark of the tha tree in id some crevice it hatches in the following spring and a new col ony Is soon started particular caro care should be used to plant only clean stock nursery trees showing much injury by woolly aphis should not be planted trees from among infested stock should bo be treated by dipping tho ho roots in iverc kerosene emu emulsion lelon containing about ton ten per cent of ke he after dilution dipping the roots tor for a few seconds in water maintained at a temp temperature of degrees fahrenheit is an ef simple treatment when it can conveniently be done special cared care should be taken to protect trees the first few years buyers of nursery stock should insist upon having a proper official cari certificate of inspect inspection on with all trees purchased as a safeguard against diseased trees j |
