TY - JOUR AU - Knott, J. E. AU - Hanna, G. C. TI - Yield of broccoli strains: Investigations on the influence of summer planting dates on yield of four strains of broccoli JF - California Agriculture JO - Calif Agr Y1 - 1949/10/01 VL - 3 IS - 10 SP - 10 EP - 12 PB - University of California Agriculture and Nature Resources SN - 0008-0845 UR - http://www.ucanr.edu/sites/calagjournal/archive/?article=ca.v003n10p10 AB - Broccoli quality is best if the flower-bud clusters reach market maturity in cool weather, although the early growth may take place at high temperatures.