TY - JOUR AU - Griggs, W. H. TI - Defoliation for early pruning Bartlett: Pears defoliated without tree injury by application of caustic dust in tests on most efficient use as defoliant JF - California Agriculture JO - Calif Agr Y1 - 1958/09/01 VL - 12 IS - 9 SP - 12 EP - 15 PB - University of California Agriculture and Nature Resources SN - 0008-0845 UR - http://www.ucanr.edu/sites/calagjournal/archive/?article=ca.v012n09p12 AB - The principal ingredient of a lime nitrogen fertilizer—calcium cyanamide—has initial toxic or caustic properties, in the presence of moisture, that cause plant leaves to absciss.