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EXPERIMENTS with Nursery STooK. 653 
as stated in a previous publications the insignificant quantity of 
leafblight present offered no opportunity to test the fungicides in 
a satisfactory manner. 
1892.— The same row of cuttings as employed in 1891 was 
treated this season, but one-half or more of each section had been 
budded in the fall previous,,as noted below, p. 666. The 
treatments were identical with those made pon the pear 
stock; see pp. 670, 671. As early as July 7 the leaves on the 
untreated section left without budding showed the disease plainly, 
while the. foliage of those sections treated with Bordeaux and 
ammmoniacal solution remained free from the disease. By August 
30 two-thirds of the foliage of the unbudded, untreated por- 
tion had fallen to the ground, while the treated sections standing in 
the same row, as shown in the plan, p. 664. Row V, remained 
intact. Plates 23 and 24 show the appearance of the treated and 
untreated sections. 
On September 29 the difference manifested by these 
stocks, was not one of foliage only. ‘The twigs of the 
treated, upon close examination, were apparently a tritle more 
robust, and the caliper of the cuttings at the base showed a con- 
siderable increase not to be attributed to differences in soil. 
Below are given the data secured from a careful calipering of the 
unbudded stocks at the collar, made October 15. ‘The figures 
given are in thirty-seconds of an inch and represent the average 
diameter of stocks in each section: 
Table 6—Showing average caliper of treated and untreated 
unbudded quince stocks. 
an SEE | 






7 x Average 
Section. NUMBER AND TREATMENT OF STOCKS. diarieter! 
ABER slaw 16 stocks treated five times with ammoniacal Solution .........ccceesececes 25.8 
BAL eas 16 stocks treated five times with ammoniacal solution .............0.e0000- 26.2 
Caters. 16 stocks treated five times with ammoniacal solution .............0e.e000: 26.3 
JE Bi ee 15 stocks treated six times with ammoniacal solution...........ceceecceees ‘ 25.0 
Baz... 16 stocks treated six times with ammoniacal solution....... Bar IN elaleinlen 27.0 
Ca2 .....| 15 stocks treated six times with ammoniacal solution,................2000 24.0 
ADL 2 15 stocks treated five times with Bordeaux mixture ...........cccceecceees 27.0 
i) oy ee 16 stocks treated five times with Bord~aux mixture.......csecccccesssscees 25.2 
Cb1 .....| 16 stocks treated five times with Bordeaux MiXture.....cccescecsece ceeees 25.2 
ABee sh). 17 stocks treated six times with Bordeaux mixture ......... ccc ccereecceces 29.2 
124 0 SRR 17 stocks treated six times with Bordeaux mixture ........... a ita i peah erat rane, 26.4 
PED Miles eeO BLOCKS MINILPCA LER: cjcicicln scl aie eil lols aisratein ela scie'erele te 9 ais slor am atle nels iaihoren ie ape 20.6 
§ Bull. 3, op. cit., pp. 58-59. 
* Unfortunately a section, Cb2, was not staked off in planning the experiment. 
