Open AccessThe effect of controlled temperature and humidity on the effectiveness of chemical defoliation of Ligustrum vulgare L. and Spiraea bumalda Burv. shrubs
Author(s) -
S. Marczyński,
Leszek S. Jankiewicz
Publication year - 2015
Publication title -
acta agrobotanica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 9
eISSN - 2300-357X
pISSN - 0065-0951
DOI - 10.5586/aa.1978.017
Subject(s) - phytotron , humidity , relative humidity , horticulture , botany , chemistry , biology , meteorology , geography
The influence of 3 temperatures: 4°, 13°, and 22°C and of 3 humidities 50% r.h., 77% r.h. and 95% r.h. on the effectiveness of two defolians KJ and Mg(ClO3)2•6H2O was investigated in a phytotron. By changing day and night temperature and humidity the weather conditions encountered in nurseries in autumn were simulated. The influence of environment on defoliation depended markedly on the species of plant and on the defoliant. In several cases defoliation started earliest at 13° but over a longer period of time the temperature 4° stimulated markedly leaf shedding