leoted male- fertile plants, to cross- 

 pollinate the flowers of the male 

 sterile plants. 



Some bee-pollinated hybrid crops 

 are cucumber, onion, and squash. To 

 produce these crops, every third to 

 fifth row is planted to the male 

 parent; the remaining rows 



are 



planted to the female parent. Simi- 

 lar methods are being developed for 

 producing hybrid seed of alfalfa, 

 cotton, melon, safflower, and some 

 other field crops. In general, the 

 bees are used on these crops the same 

 way they are used on the other crops 

 mentioned in this leaflet. 



For More Information 



Single copies of the following publications on bees and beekeeping — 

 prepared by the Agricultural Eesearch Service — can be obtained free 

 from your County Extension Agent or by writing to the Office of Com- 

 munication, U.S. Department of Agriculture, Washington, D.C. 

 20250. Send your request on a postcard. Be sure to include your ZIP 

 Code and your return address. 

 AIB 313 — Identifying Bee Diseases in the Apiary 

 AH 353 — Beekeeping in the United States 

 AH 496 — Insect Pollination of Cultivated Crop Plants 

 FB 2204 — Selecting and Operating Beekeeping Equipment 

 Leaflet 530 — Shade and Water for the Honey Bee Colony 

 HG 158 — Beekeeping for Beginners 



U. S. GOVERNMENT PRINTING OFFICE : 1977 O - 222-505 



