CHE REFERENCE LIBRARY - Pole Shift Survival Information

190 7’H-IR N IJRSER Y-M,4 N Ti.4 I,
long, twenty feet wide and tell feet high in the clear, will winter
about flt,,O()() three-year-ol(l apple trees, if the trees are corded,
as already described.
While vtntilution should be provided, the house may nevertheless
be kept c4ose in cold weather. If the temperature runs
but little above frecbzillg, there is little withering nor does mold
de\velop. SOW houstls art‘ provided with refrigeration. Keeping
houses too warm and allowing air to blow through are
likely to de&dim the stock.
IMPORTANT DISEASES AND INSECTS AFFECTING NURSERY STOCK
Prepared for tllis 3lanual by the late V. 13. Stewart, Bureau of Plant
Indu~tr~~, United States L)epzirtment of Agriculture, and of Cornell Univers1t
I \ , qxvialist ill nursery-t;tock diseases. Fumigation and inspection,
not dealing with the growing and perfecting of the stock, are not treated
here. (;rowm ivill (10 \\ell to rons1llt s11rli worlds as 14:. I?. Smith 0tI
“l!acteriul I)iwaw: of PlalltS” (Sanders, Phila.), awl t-lie Rural Manuals 1)~
lle5ler 8c 1Vlietzt4, l&nkiu, Slingerinncl & (‘roJq~.
The ilnpn~ti~nt problem coufronti1q uurseryrnen is the
productiorl r~f tht. grwtt~st C]UillltitJr of first-class stock to the
acre within thtl shortest period of tim. Sm4~ ~~onditio~~s as
WWtht!r, soil, cultiv&m, a~ltl presetm of certain destrucstive
diseases, are some of the factors that influence the development
of nurWqY plantings. Of particular importance is the
effect of y;triolls I)lullt (liseases and ins&s. The stock may
have deveh)prtl j.tqr rapidI>’ illltl bca perfectly healthy, whw
within a I’qV sllort time c~oll(litions Illil) (‘lliLll@ ;l,lltl the plants
become seriously injured or totirll>. milled I)>. a destructive
disease or il lsect .
The losst5 ill tlltl Ilursery C!iluSet~ 11)~ diseases are often veq
hC%V)‘. Some (liseilsfr’s, swll ilS fire-blight, completely de&o)
the stock attaclcecl urhss the disease is t~radicat,ed by cutting
out, the affec,ted parts. Otht~r diseases iifFWt 0111)~ the foliage
ad art: a m011acc to nursery stock by causing the leaves to