Effect of the application of Puma before and after jointing on photosynthetic physiologies in the leaves of wheat
Year: 2012
Type: article
Abstract: Wheat is one of main grain crop,the harm of weeds on wheat production development is one of the important factors.Trial used a randomized block design,before and after applying in wheat jointing 5 concentrations of herbicide Puma(25,50,100,150,300 g per 667 m2) after spraying,determination of wheat leaf net photosynthetic rate(Pn),stomatal conductance(Gs),intercellular CO2 concentration(Ci),transpiration rate(Tr) indicators,designed for safety application of herbicides in wheat field to provide the theory basis and the technical support.The results showed that: before spraying after jointing,Puma,in wheat flag leaf stage pour two leaf transpiration rate with spray dose increased decreased,while heading stage and grain filling period is decreased with rising trend.In flagging stage,fall two leaf water use efficiency rise,heading stage and then decreased,while in the period of grain filling,pour two leaf water use efficiency decreased,as the Puma concentration increases and wheat growth period after pushing two,the wheat leaf water use efficiency was reduced gradually,and after jointing stage spraying water use efficiency was significantly lower jointing the front spraying.
Source: Guangdong nongye kexue
Author: Wang Xin
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: gold
Estimated APC paid: $726
OpenAlex ID: W2391177517