Effect of defoliation levels on recovery of leaf area, on yield and agronomic traits of soybeans

Reference Report for SoyBase831981148

Title:	Effect of defoliation levels on recovery of leaf area, on yield and agronomic traits of soybeans
Authors:	Gazzoni, D.L., Moscardi, F.
Source:	Pesq. Agrop. 1998, 33(4):411-424
Abstract:	In field trials in Londrina, Paran√°, Brazil, soyabeans cv. Paran√° were subjected to 0, 33, 67 or 100% defoliation at growth stages V3, V8, R2 or R6. Measurement of leaf area 5 and 12 days after defoliation and mathematical simulations showed significant recovery of leaf area at low levels of defoliation, especially during the vegetative period. During the reproductive period defoliation reduced the rate of natural leaf loss. Seed yields were reduced only by 67 or 100% defoliation at R6, whilst date of maturity, lodging and plant height were unaffected by defoliation.

Funded by the USDA-ARS. Developed by the USDA-ARS SoyBase and Legume Clade Database group at the Iowa State University, Ames, IA

U.S. Public Domain