146 EXPERIMENT STATION RECORD. [Vol. 41 



nate vine was decidedly prepotent in stamping good qualities of fruit char- 

 acters on practically all of its progeny. A certain type of foliage variation 

 was found to be closely correlated with sweetness of fruit. Four new 

 varieties of muscadine hybrids were introduced in 1917, and named by the 

 Georgie State Horticultural Society. Efforts to cross Vitis rotundifolia and 

 v. vinifera failed. 



Report of the horticultural division, J. E. Higgins (Hawaii Sta. Rpt. 1918, 

 pp. 13-21, pis. 2).. — A brief report on extension activities, experimental work, 

 and distribution of plants. 



In the fall of 1917 a variety test of garden beans was conducted by J. H. 

 Cowan. It was found that an important factor in successful bean production 

 lies in the susceptibility of the different varieties to the attacks of the melon 

 fly. Twenty-one per cent of the Stringless Green Pod was stung, and varying 

 degi'ees of susceptibility were shown by the other varieties. Early Refugee 

 and Refugee Wax received no injury whatever from the fly, and the Stringless 

 Refugee and Ventura Wonder Wax suffered less than 1 per cent injury. 

 There was imiformly a very much higher percentage of infestation in the 

 first picking than in the second. After careful tests of cooking qualities, 

 flavor, texture, and absence of strings, it was concluded that the Stringless 

 Green Pod, the Early Refugee, and the Stringless Refugee beans were of most 

 promise both for canning and for table use under the conditions existing at the 

 station. 



Tomato crosses were made by J. H. Cowan, with special reference to de- 

 veloping the fly-resistant character of certain small-fruited sorts with the 

 greater size of some of the standard kinds. Flowers of the Earliana were 

 crossed with pollen from the small wild form. Fi fruits were variable and 

 intermediate in size between the two parents, but they all appeared to be free 

 from infestation, except where otherwise injured. The second generation also 

 is recorded as having been free from attack at the station and many thousands 

 of seeds and seedlings were distributed for further trial. In a cross between 

 Red Pear and John Baer the first generation was practically free from at- 

 tack of the melon fly, but the second has shown some degree of infestation. 

 Observations thus far made indicate that any tomato to be bred for resistance 

 to the fly must combine both evenness and smoothness of surface. The skin 

 must be tough, with a degree of smoothness amounting almost to slipperiness. 

 A tomato with a slight depression about the stem end is subject to attack, 

 especially if the circle protected by a tightly fitting calyx is not greater in 

 diameter than the length of the ovipositor. 



The work with seedling pineapples (E. S. R., 38, p. 841) was continued dur- 

 ing the year. 



[Report on horticultural investig'ations in Illinois] (Illinois Sta. Rpt. 1918, 

 pp. 17-19). — Brief statements are given of progress made in various lines of 

 work. 



The orchard fertilizer experiments have shown a progressively increasing 

 yield in nitrogen-fertilized plats over plats not thus fertilized. 



Apple blotch was effectively controlled by making applications of either lime- 

 sulphur or Bordeaux three weeks and five weeks after the fall of the petals. 

 Dusting controlled codling moth and curculio as effectively as spraying, but 

 failed to control the fungus diseases. Calcium arsenate was satisfactory as a 

 stomach poison, and did not injure fruit or foliage. Nicotin sulphate was only 

 of value in controlling aphids. Acid or hydrogen lead arsenate reduced scab 

 infection from 30 to 60 per cent when used without the usual fungicides. Stand- 

 ard commercial lime-sulphur diluted 1 : oO was as effective as a 1 : 40 dilution. 



