Catkin killing was very severe in both orchards and only those varieties which had a few live catkins are listed. In Orchard 6 the catkin killing on five trees of Italian Red ranged from 20 to 50 percent and on six trees of Red Lambert from 10 to 20 percent. A few catkins on Alpha also survived. The remaining 35 filbert varieties in this orchard lost all their catkins. Several Jones hybrids in this orchard fared somewhat better. A few catkins survived on Bixby. Jones 269 lost 10 percent, Jones 310 lost 30 percent, and Jones 207 lost none of its catkins. All the catkins were killed on Jones 83.
In Orchard 16, the story is soon told. Not a single live catkin was found in the spring on the 66 filbert varieties in this orchard. Of the native hazels Bush lost all its catkins, and Winkler none. All catkins were dead on the Corylus rostrata from Rhode Island.
As stated earlier, the pistillate flowers were hardier than the catkins and nearly all varieties in both orchards had at least an occasional female flower. However, only those in which the number of pistillate flowers was described as medium or numerous will be recorded here. In Orchard 6 these varieties were Alpha, Cosford, Fichtwerdersche, Gubener Zeller, Gunzlebener Zeller, Gustav's Zeller, Longe Landsberger, Noce Lunghe, Italian Red, Medium Long, Bollwiller, White Lambert, Gasaway, Gubener Barcelloner, Blumberger Zeller, and Unknown. Five Jones hybrids including Bixby had a full pistillate bloom. Due to wood injury and possibly to a scarcity of pollen only a few of these varieties bore more than a few nuts. Varieties bearing a medium crop are Cosford, Italian Red, Medium Long, Gubener Zeller, Gunzlebener Zeller, Bollwiller, and Unknown. Four of Jones hybrids including Bixby, are bearing fair crops. The other varieties in this orchard are bearing only an occasional nut or none.
In Orchard 16 the pistillate flowers were described as medium or numerous on the following varieties: Barr's Zellernuss and the Winkler hazel. The other 65 varieties bore only an occasional flower. No filbert pollen was available in this orchard, consequently Winkler is the only variety fruiting.
In Orchard 16 were 534 two-year-old trees from crosses between Rush and various filbert varieties. The cross was made by Mr. Reed and the seedlings were sent to Geneva by the late Mr. Bixby. Of these 534 seedlings, 62 bore catkins. The catkins on 14 of these were uninjured, 19 had varying amounts of injury, and 29 suffered 100 percent killing. Three hundred and ninety-two bore pistillate flowers and 74 of these would probably have had full crops had they been pollinated. In view of the complete loss of catkins on the filbert varieties in this orchard, the survival of catkins on about half of the blooming seedlings is of considerable interest to the filbert breeder. In addition, none of these hybrids experienced any wood killing.
If the list of varieties which passed through the very severe winter of 1933-34 is compared with the list of varieties which were not seriously injured by the very mild winter of 1932-33, only two sorts, Italian Red and Red Lambert are found to be satisfactorily hardy in wood and catkin. Red Lambert is too unproductive to be used except as a pollenizer. Italian Red may therefore be considered the most promising variety now available for western New York conditions. The nut is satisfactory and the tree is one of the most productive. Cosford and Medium Long may also be considered among the hardiest in spite of the complete loss of catkins last winter. In all previous winters they have been among the hardiest in wood and catkins. No variety should be eliminated because of a lack of hardiness during the coldest winter on record in the region where it is being grown, if it possesses other desirable characters.
I think considerable encouragement may be derived from the previous winter's experience. We are at last down to rock bottom and know what is hardy and what is not. It is evident from the behavior of the Jones hybrids and Mr. Reed's hybrids involving a similar parentage that sufficiently hardy varieties will result from this line of breeding work to make filbert culture possible in those sections of the country that are not too cold for peaches.
[A] Approved by the Director of the New York State Agricultural Experiment Station for publication as Journal Paper No. 49.