.\Kizr)N.\ AcRicri/rru \i. I'.xi'Kui mi:xt Station 457 



Beginning on the west side of Border E 68, ten rows of com- 

 mon alfalfa extending the entire length of the border were planted; 

 next, ten rows of Hairy Peruvian with seed coming from a field in 

 the Yuma Valley certified as commercially pure ; next, one row 

 each of No. 41 (French), Siberian (35), Turkestan (27), Algerian 

 (24), Arabian (22), Common (17), Variegated (H). one selection 

 from Hairy Peruvian (39), and one row of Baltic. The remaining 

 four rows of the border were planted to Hairy Peruvian from the 

 same source as the ten rows mentioned above. 



Work with these alfalfas has been planned as follows : ICach 

 variety will be thinned to one typical plant in a place, with two feet 

 of space between the plants in the row. Some of the plants of 

 each variety will be covered with screen wire cages during the 

 flowering stage in order to secure self-pollinated seed. Seeds wdl 

 also be taken from plants of each variety which have grown in the 

 open and been exposed to cross-fertilization by insects. The seed 

 grown from self-pollinated plants under cages and seed from plants 

 grown in the open from each of the above varieties will be planted 

 in adjacent rows for the purpose of studying the variation of plants 

 grown from self-pollinated seed and that of plants from seed grown 

 in the open. This comparative study will be made through at least 

 three seed generations. In addition to furnishing data for the 

 determination of the extent of cross-pollination by insects in an 

 open field of alfalfa, those pure races from self-pollinated plants 

 will furnish good material for the study of variation within the 

 same pure lines of alfalfa. It is believed that pure lines may be 

 established by the time three successive seed generations have 

 been taken from self-pollinated plants. 



BEANS 



Work \vith beans during the past year was confined to testing a 

 number of varieties introduced by the Department of Agriculture. 

 Eighty-nine varieties from foreign countries having climatic condi- 

 tions more or less like those of Arizona were planted. Owing to the 

 small space available for these plantings, only a single short row 

 could be planted to each variety. Along with these foreign intro- 

 ductions were planted the Pink, Bates, Bayou, Hansen, and Pinto 

 beans. The entire lot was planted in the early spring and came 

 into bearing about mid-summer. The yield from each of the native 

 beans was very low, and in the case of the Bayou and Hansen no 

 pods at all were set. On the other hand, some of the introductions 

 set numerous pods which were well filled. 'Eleven varieties from 

 these introductions were selected for further testing. 



