EXPERIMENT STATION BULLETINS. 349 



GENERAL TREATMENT FOR PEARS. 



Inspect for scale insects and if present, spray before the buds start 

 with strong lime-sulphur. The Pear Blister Mite (a mite that causes 

 thickened red and broAvn spots on the leaves) and the Pear Psylla may 

 also be partially controlled by this spraying for scale. If these pests 

 were serious last year, make the strong lime-sulphur spraying even if 

 not needed for the San Jose scale. 



Apply the Same General Treatment to Pears as is given for apples. 

 If the dilute lime-sulphur is used, it should not be as strong as for apples 

 (see dilution table on i>ago oG.").) 



Pear Blight or Fire Blight was very serious last season in many 

 parts of the state. It is easily noticed; a lu-anch dies back from the tip, 

 leaves turn brown, wither, but do not drop. Is caused by a germ that 

 works within the twig and hence spraying is not a preventative. It 

 usually is more serious in rapidly growing trees and for this reason, many 

 j)ear orchards are left in sod. Cut out the diseased twigs and branches. 

 Make a frequent and systematic inspection of every tree and cut out 

 cverv diseased twig and branch found. Cut several inches below where 

 the wood appears to be dead. Carry the dead portion out of the orchard 

 and bury or burn. After every cut, wiiie off the wound with a cloth 

 or sponge moistened \vith a 5% carbolic acid solution. 



If slugs appear, spray with an arsenical, if not too near ripening of 

 fruit to be dangerous. In case of early pears fresh hydrated lime may 

 be dusted on. 



GENERAL TREATMENT FOR PLUMS. 



Plum trees may be infested with the San Jose or by the European fruit 

 scale. The treatment for them is the same as recommended for scale 

 on apples. (Page 345.) 



Just Before the Buds Swell^ spray with the dilute lime sulphur (or 

 the Bordeaux mixture) and arsenate of lead, 2i/2 to 3 lbs. to a barrel. 

 This is to prevent leaf-spot, fruit rot, black knot and curculio. 



Arsenate of lead is preferable to Paris green on all stone fruits, owing 

 to tenderness of foliage in such fruits. 



Immediately Aeter the Blossoms Fall^ it is very essential to make 

 another spraying using the dilute lime-sulphur or Bordeaux mixlure or 

 self-hoilcd lime-sulphur, and two pounds of arsenate of lead to every 

 50 gallons. (For the Japanese varieties use the self-boiled lime-sulphur 

 or dilute the Bordeaux one half.) This spraying is to prevent the leaf 

 diseases, fruit rot and curculio. Be sure it is made iinmcdiatelij after 

 blossoms fall. Our experiments last year showed that dilute lime- 

 sulphur was very satisfactory on plums and it is easier to prepare and 

 spray than Bordeaux or sclf-hoiled lime-sulphur. 



