摘要:

AbstractIn a study of the relationship between carbon dioxide assimilation in the light, respiration in the dark, and temperature, the carbon dioxide content of air drawn over dwarf beans treated with lime sulphur or sulphur dust in light or darkness was continuously monitored coulometrically.Sulphur dust had only a negligible effect on carbon dioxide assimilation in the light or on respiration in the dark. Lime sulphur at 15 and 22°c also produced only small differences but at 30°c there were marked changes in net assimilation.Those treatments which caused changes in carbon dioxide assimilation in the light or respiration in the dark were directly associated with the degree of damage estimated visually. The method may be valuable for the detection of phytotoxic effects of other fungicides and insecticide

ISSN:0031-613X    

DOI:10.1002/ps.2780020111

出版商:John Wiley&Sons, Ltd    

年代:1971

数据来源: WILEY

摘要:

AbstractThe application of partition data, derived by a gas‐liquid chromatographic (g.l.c.) technique, to the study of the activities of members of homologous 4‐(l‐substituted alkyl)‐2,6‐dinitrophenol series against cucurbit and apple powdery mildews (caused by Oidium sp. and Podosphaera leucotricha respectively) is discussed. The correlation between the possession of high protectant activity and a favourable πglc value for maximum ‘zonal’ movement within the leaf surface is stressed. This criterion is more important than vapour‐phase activity in this context; it may well rival in importance the possession of optimum conidial penetr

ISSN:0031-613X    

DOI:10.1002/ps.2780020112

出版商:John Wiley&Sons, Ltd    

年代:1971

数据来源: WILEY

摘要:

Abstract2‐Methyl‐5,6‐dihydro‐4‐H‐pyran‐3‐carboxylic acid anilide, a new systemic fungicide, proved to be highly effective against smut diseases of barley and oats (Ustilago nuda and U. avenae) in pot and field trials. The disease incidence could be prevented almost completely at rates of 50 g and 25 g respectively, of the active ingredient per

ISSN:0031-613X    

DOI:10.1002/ps.2780020113

出版商:John Wiley&Sons, Ltd    

年代:1971

数据来源: WILEY

摘要:

AbstractAn analytical method and results are given for the determination of triphenyltin residues in potatoes. Of the 44 samples analysed 35 contained residues of 0.001 ppm or less; residues in 6 of the samples were in the range 0.002–0.005 ppm and in 3 samples in the range 0.006–0.008

ISSN:0031-613X    

DOI:10.1002/ps.2780020114

出版商:John Wiley&Sons, Ltd    

年代:1971

数据来源: WILEY

ISSN:0031-613X    

DOI:10.1002/ps.2780020115

出版商:John Wiley&Sons, Ltd    

年代:1971

数据来源: WILEY

ISSN:0031-613X    

DOI:10.1002/ps.2780020116

出版商:John Wiley&Sons, Ltd    

年代:1971

数据来源: WILEY