TY - JOUR AU - Mann, J. D. AU - Storey, W. B. AU - Jordan, L. S. AU - Day, B. E. AU - Haid, H. TI - New evidence: Light dependency in seed germination JF - California Agriculture JO - Calif Agr Y1 - 1966/08/01 VL - 20 IS - 8 SP - 6 EP - 7 PB - University of California Agriculture and Nature Resources SN - 0008-0845 UR - http://www.ucanr.edu/sites/calagjournal/archive/?article=ca.v020n08p6 AB - When land is made weed-free by chemical control methods, particularly with contact herbicides, the weed-free condition is best maintained by not disturbing the soil. Such disturbance can lead to germination of a new crop of weed seeds that otherwise would remain dormant.