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The Guardian -The Evening Patriot

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if gNo potato resists {all field diseases

G. W. AYERS Research Branch, Experimental Farm Potato varieties differ widely in their resistance to diseases foncountered in the field and in .warehouses and private storag- ~es. No high quality potato has ;sver been developed with high .gesistance to all diseases found In potato growing areas of Ca- jnada. Growers have found that ,special methods of treatment and culture are required for each named variety if success is to be achieved in the production of .. profitable crop.

' Reactions to certain plant dis- eases are herein cited for some

commonly grown varieties. - The Irish Cobbler is suscep- tible to mosa'c leaf roli_ spindle tuber, blackleg. common scab and Verticillium wilt. Fusarium 'gtorage rot is not a problem

with this variety.

een Mountain is sus- ceptible to mosaic. leaf roll and mon scab but shows resis- hnce to verticiiltum wilt, black- seed - piece decay caus-

ed by bacteria and fungi. . The Sebago variety is suscep- Cble to blackieg and fusariurn storage rot but shows resistance .0 late blight. tuber rot. com- mon scab. leaf roll and mosaic. ebec variety is sus-

. is a resistant to Inaarinm seed»

’Iece decay. »' The new variety Hunter is

moderately susceptible to led and plant stands may be re- by lead pieces widen fail

‘ Moss t. sues, so!!! hum“

cillium wilt. It is not particu- larly subject to bruising and tab- le quality is excellent.

Weaknesses h varieties such as susceptibility to disease or to bruising can be partially oven- comc through such measures as:

(I) tuber unit planting to sli- minate d so.

(2) pro-planting care to ensure good sprouting of seed.

ate disease organisms from seed - piecs surfaces,

(4) cars in eating and grading to minimize tuber -

Jury.

The Chulottetown Farm scnaeos all new potato varieties and unnamed s for rs- si ance to several diseases. Knowledge gained through these tests aids in the formulation of methods

“Helium-ﬁver“-

each variety nuy be most suitably bandied.

(3) seed treatment to elimln-l

Plowman display skills at Island Plowing matches

~ immediately and then compared

. g g

. and scored. on color.

.' Fredericton. NB.

Ch' '1 k'

ips 00

a a

Is nnportant Chip potatoes not only have to

be lood. they have to look good.

has alsown that the customer prefers a golden

wn s a k color when it comes to eating the tuber in this

form.

H. ’1‘. Davies of the Canada de- partment of sgrlculiure's re search station at Fredericton says the potato chipping indus- try could take a steady supply of suitable potatoes throughout t year. New varieties are be- ing tested to meet these needs.

Many v arities malts an ac- ceptable chip when dug and pro- cessed in July and August. But if stored at temperatures of so F. or lower they yield dark brown, undesirable chips with a bitter taste. The low temperatur- es cause sugars to accumulate in the tubers and the sugars re- act with certain amino acids to produce .‘ne dark-brown color. If transferred to storage at 70 to 75 F. for a few weeks before pro- cessing some potato varieties still make chips of the desirable golden brown color.

In assessing the value of new varieties. samples of potatoes from seedlings at Fredericton are dug in midsummer. chipped

with a standard set of chips cov- ering the color range from poor to excellent.

At harvest time in the {all more samples are stored at 40 F. for three months and then at

F. T h e s e are chipped at weekly intervals for four weeks Other samples are stored at 55 F. in the fall and chipped periodically during the winter with no recon- ditioning.

Thrips controlled with insecticides

Thrips in blueberry fields can be controlled by applying an in- secticide in the year the fields are burned. states C.W. Maxwell of the Canada Department of Agriculture, Research Station at

‘_ emerging from the soil.

A 21.6 per cent dieldrin dust at 20 pounds per acre is the most effective pesticide and should be applied when the sprouts are

Thrips Come out of the soil in early spring and lay eggs on the terminal leaves c s u sin g them to twist and roll. These leaves develop into galls from which the adult thrips emerge in July or August. In late August the adults enter the soil to pass the winter.

an)!” m V

SHEEP CLASS IS OBJECT 0F JUDGES CRITICAL EYE AT DUNDAS

It's Seeding Time Again

,; -- '. Farm helps to solve agricultural problems l

The function of the Experi- forage,

mental Farm with its research branch. formerly known as the science service. is to conduct research leading to the solution of agricultural problems pecul- iar to Prince Edward I s l a n d and the Atlantic region, and, in co - operation with other re- search stations to obtain re- search information that has a national application.

broad objective of the work at the farm here is to im- prove the iertility of Prince Ed- wa Island soils, an o in- crease the production of protec— tive cover crops. Emphasis is placed on soil and plant nutri- tion, breeding and management of forage crops. for improved livestock production and soil stability, breeding and man- agement of dairy cattle. breed- ing of cereal varieties for the Atlantic region, and control of insects and diseases of Prince Edward Island crops. Variety and cultural trials are conduct- ed with potato. cereal. tobacco,

. MIXTURES . TIMOTHY . CLOVERS

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vegetables and small fruit crops. PREPARES PAPERS

In addition to conducting no- search, the staff here has been active in preparing research papers, special reports. and presa articles. in assisting at c o n f e rences and committee meetings. and in meeting many farmers who visit the farm for information and advice. In ad-

ion to the many individual: visitors, 29 different farm or-i ganizafions used the facilitiesi at the Farm for meetings dur-

l ing the year. i

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YOU'LL GROW BIGGER YIELDS because you can match planting rate precisely to your soil's fertil- ity. There’s no guesswork—row spacing, seed spacing, depth of planting; and width, depth, and contour of coverage can be con- trolled exactly. Result? Maximum yields and conservation of both seed and fertilizer.

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