Effects of Different Formulations of Chlorfenapyr on Photosynthetic Characteristics and Quality of Mulberry Leaves
In order to exploit usage of chlorfenapyr in controlling pests safely and efficiently in mulberry fields, different formulations of chlorfenapyr, namely emulsifiable concentrate, water emulsion, microemulsion and suspension concentrate, were used to spray onto mulberry trees, and the effects on photosynthetic characteristics and quality of the mulberry leaves were studied. The results showed that the net photosynthetic rate, stomatal conductance, transpiration rate and the protein and soluble sugar contents increased in various degrees over the control after spraying with chlorfenapyr. The order of increment on the net photosynthetic rate was microemulsion > suspension concentrate > emulsifiable concentrate > water emulsion, and the effects of microemulsion on increasing protein and soluble sugar contents were also better than other treatments. The fat contents of mulberry leaves decreased slightly first and recovered to the level of the control after day 6. The changes of intercellular CO2 concentration did not show obvious regularity. The results also indicated that there were no adverse effects on the photosynthetic characteristics and quality of mulberry leaves among the 4 formulations of chlorfenapyr. This study provides useful information for reasonable selection of chlorfenapyr formulation to control pests in mulberry fields.
NETL
NSTL
万方数据
维普
