FREE BOOKS

Author's List




PREV.   NEXT  
|<   173   174   175   176   177   178   179   180   181   182   183   184   185   186   187   188   189   190   191   192   193   194   195   196   197  
198   199   200   201   202   203   204   205   206   207   208   209   210   211   212   213   214   215   216   217   218   219   220   221   222   >>   >|  
e next step is to bind together the parts being grafted, winding strong, cotton string firmly around the cut with its scion enclosed, covering practically all of the vertical cut of the inverted T. Finally, melted paraffin--not too hot--is applied to the union, every part being carefully covered in order to exclude air and thus prevent drying out. We use Clarke's melter which, with adjustment of the flame, will keep the paraffin at a temperature slightly above the melting point and thus will not get too hot. Grafting wax may also be used instead of paraffin. The best time to perform the operation in Connecticut is during April or early May. Our first scions or inarches, grafted in 1937, are now 6 inches in diameter at ground level and constitute the main tree. If they become blighted, other suckers are inarched into them, and so on. The purpose of the inarching is to restore the communication between leaves and roots, which is so essential to the life and health of the tree, and which the diseased bark of the blight lesion interrupts, eventually causing girdling and death of the trunk or branch attacked. A series of these inarchings of different ages is shown herewith. (Fig. 2.) On our plantations we no longer dread the chestnut blight, since we can usually circumvent it by this method. However, with the American chestnut, because the fungus advances rapidly in this species, the girdling is often completed before the scions can take hold. Therefore, with that species or with the least resistant hybrids the method is often though not always ineffectual. This method of grafting is not new. It is similar to bridge grafting and has been known and practiced for centuries. The only credit we can claim is for its application to the chestnut blight as a method of control. MR. CHASE: We will now hear from Mr. George Salzer, Rochester, New York, "Experiences with Chestnuts in Nursery and Orchard in Western New York." Mr. Salzer. Experiences with Chestnuts in Nursery and Orchard in Western New York GEORGE SALZER, Rochester, New York My work with Chinese chestnut trees during the past ten years has been most interesting. The first trees were grown in our back-yard garden; then, when more seed was available locally, a building lot was purchased for use as a nursery. Seed is planted in the spring because when fall planting was tried, the rodents took most of the nuts. Up until last year, chestnut seed was stra
PREV.   NEXT  
|<   173   174   175   176   177   178   179   180   181   182   183   184   185   186   187   188   189   190   191   192   193   194   195   196   197  
198   199   200   201   202   203   204   205   206   207   208   209   210   211   212   213   214   215   216   217   218   219   220   221   222   >>   >|  



Top keywords:

chestnut

 

method

 

paraffin

 

blight

 

Western

 

Salzer

 
Experiences
 

Nursery

 

Chestnuts

 

Orchard


scions
 

species

 

girdling

 

grafting

 

Rochester

 

grafted

 

completed

 

fungus

 
advances
 

rapidly


rodents

 
ineffectual
 

hybrids

 

resistant

 

planting

 
Therefore
 

longer

 
plantations
 

However

 

circumvent


American

 

spring

 

George

 

control

 

GEORGE

 

interesting

 

garden

 
locally
 

application

 

Chinese


practiced
 
bridge
 

SALZER

 
similar
 
planted
 
credit
 

building

 

nursery

 

centuries

 

purchased