734 EXPERIMENT STATION RECORD. ' [Vol. 43 



(lid not pay for the time and labor expended. With supplemental irrigation, 

 katir, Freed soi'^^huni, Sudan grass, cowpeas, and sweet clover made reasonable 

 yields. 



Hegari and milo gave excellent grain yields in limited sorghum tests at Yuma. 

 Honey Drip, the best of the sweet sorghums, made a very heavy growth of 

 forage. Flax and tepary beans were of considerable promise, while buckwheat 

 varieties, root crops, and vetch did not prove satisfactory. 



Acre yields of potatoes at Yuma were 10,976 lbs. for White Rose, 10,192 lbs. 

 for Irish Cobbler, and 9,800 lbs. for Triumph. In a comparison of storage 

 methods, the practice of spreading potatoes out thinly in ventilated bins proved 

 equally effective as storage in a ventilated dugout, bbth methods preserving 

 a high percentage of sound potatoes. In case of potatoes coated with paraffin, 

 all were rotted at the end of ff>ur weeks. This was held to emphasize the 

 detrimental effect of excluding air and the value of thorough ventilation during 

 storage. 



Japanese kudzu vine (Fueraria liirsuta) made a vigorous growth in the in- 

 troduction garden at Tucson, some of the vines attaining a length of 50 ft. in 

 a season. Its culture as a forage crop, along irrigation ditches or in areas not 

 readily accessible to cultivation, is recommended. 



[Report of plant breeding work in Arizona], W. E. Bryan and C. O. Bond 

 (Arizona Sta. Rpt. 1918, pp. 31-^-321). — This reports the continuation of work 

 previously noted (E. S. R., 41, p. 332). * 



In the wheat breeding plats at Yuma, several hybrids produced from 50 to 

 60 bu. per acre, about 20 bu. more than Early Baart. The quality of the high 

 yielders was*fair, but neither grain nor plants were deemed to be sufficiently 

 uniform for bread wheat plantings, and required further selection. Selection 

 39A-5 with 45.7 bu. per acre outyielded Pearly Baart by approximately 10 bu. 

 in trials of pure selections at the Salt River Valley farm. This variety, as 

 well as all others tested, proved inferior to Early Baart in comparative baking 

 tests. 



Studies of the heat resistance of individual selections of alfalfa at Tucson 

 indicated that practically all plants were reduced in yield as the summer 

 advanced. The yield of the fourth cutting was said to be less than one-fourth 

 that of the first cutting in practically every case. A French variety was the 

 highest summer yielder of all alfalfas tested in field plats at the Salt River 

 Valley farm, producing 9,098 lbs. per acre as compared with 7,128 lbs. for 

 Algerian and 6,649 lbs. for Peruvian. Although the French variety gave a 

 more vigorous summer growth, it was not expected to flourish in the winter 

 as well as the Peruvian. 



Thirty-four milo heads selected from plants producing neither suckers or 

 branches, but with single upright heads, were planted in individual rows at 

 the Mesa farm. Of the 5,270 plants in the 34 rows, 80 were found coming 

 true to the single head type, and about one-half of the heads of these plants 

 were upright. Some of the plants appeared to be pure for the type selected, 

 while others were the result of abnormal field conditions. 



Breeding work with beans is also briefly noted. 



[Field crops work on the Canada Experimental Farms in 1918], J. H. 

 Grisdale et al. {Canada Expt. Farms Rpt. 1919, pp. 9-13, 24-27, 29, SO, 37-42, 

 .{//, 45, J,9, 52-55, 60. 61-63, 65-79, 84, 90, 91, 92, 96-98, 102-104, 116-121, 129, 130, 

 136, .137, 142, 143, 148-150, 152, 153, 155, 156, 159-161, 165, 166, 169, 170, 172, 173, 

 181-185, 189, 190, 193-195). — This reports variety, fertilizer and cultural tests.' 

 and breeding work with cereals, forage crops, i-oot crops, potatoes, and tobacco 

 in continuation of similar work previously noted (E. S. R., 41, p. 528). 



