It has as its objectives more conven- 

 ient pruning, spraying, and picking. 

 A. F. Yeager 



Hay Mulch Proves to be Superior 

 to Sawdust or Seaiveed for Apple 

 Trees. Trees of similar diameter 

 yielded more fruit with hay mulch 

 than they did when mulched with 



sawdust or when unmulched. Sea- 

 weed resulted in poor fruit color. 

 All the mulch treatments increased 

 fruit size in a similar manner. The 

 nitrogen relationships in connection 

 with the use of sawdust need further 

 study. 



L. P. Latimer, G. P. Percival, 



and S. Dunn 



Plant Pathology 



Leaf-Roll Symptoms May not Ap- 

 pear on Foliage of Potatoes Grown 

 in the Greenhouse. The leaf-roll 

 virus affects the food-conducting ele- 

 ment in the potato stem and tuber 

 so that food materials manufactured 

 in the leaves cannot be translocated 

 from the leaves to the tubers. Starch, 

 therefore, accumulates in the leaves 

 and causes the rolling of the leaves 

 which is the typical symptom of leaf- 

 roll in potatoes. 



Under greenhouse conditions of 

 low light intensities and moderate 

 levels of nitrogen in the soil, starch 

 accumulation does not occur and the 

 leaf-roll symptom is not evident even 

 though the plant has been inoculated 

 with the virus. 



In order to have the visual symp- 

 toms appear under greenhouse condi- 

 tions, the nitrogen level of the soil 



should be rather low and adequate 

 water should be supplied. The addi- 

 tion of small amounts of phosphatic 

 fertilizer also intensifies the leaf- 



rolling symptoms. 



M. C. Richards 



New Fungicides Prove Effective in 

 Controlling Apple Scab. Of about 

 eight new fungicides that were tested 

 last year, Phygon, Puratized, and 

 Magnetic sulfur gave the best con- 

 trol of apple scab. Phygon, %-100, 

 produced some foliage injury but 

 gave the best control of scab on both 

 fruit and foliage. All materials 

 tested gave reasonably good control 

 which goes to prove that proper tim- 

 ing, adequate dosage, and good cov- 

 erage are highly important. 

 M. C. Richards 



Poultry Husbandry 



A Better Meat Type Bird is Being 

 Developed From a Dark Cornish- 

 New Hampshire Cross. The Dark 

 Cornish-New Hampshire cross that 

 was made here eight years ago has 

 produced some excellent progeny 

 The carcasses of these meat cross 

 chickens are very plump and broad 

 breasted. (See Fig. 8.) The live 

 birds greatly resemble the "New 

 Hampshire", except that they are 

 close feathered, have a very broad 



breast (See Fig. 9), deep, long body, 

 and a long keel (See Fig. 10). 



During the past year, 61 of these 

 meat-cross females were used in four 

 special mating pens. A total of six 

 males were used, each hen being 

 mated to two different males during 

 the hatching season. Over a hatch- 

 ing period of eight weeks, 1795 eggs 

 were set from these hens. A fertil- 

 ity of 90.1 per cent and a hatchabil- 

 ity of 76.75 per cent of all fertile 



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