Plantenziektenkundige vraagstukken in verband met de vlascultuur

Voordracht gehouden op de Landbouwweek, Juni'32, Wageningen     

Over den smaak van stoppelknollen in verband met den weerstand tegen knolvoet

Summary The method to determine the mustard oil content in turnips, by means of silver-ammonio nitrate (blackcolouring) is not reliable under dutch conditions. Nor does blackcolouring give any indication as to the sharpness of taste. A difference must be made between sharpness (probably localized in the shell) and the typical taste of turnips.The relation often suggested between sharpness of taste, resulting bij high mustard oil content and resistance against Club Root a relation unfavourable for selection, does apparently not exist.     

Verschijnselen bij diverse tuinbouwgewassen,die in verband staan met de droge en warme zomer

Summary Phenomenon on various crops due to drought, heat, sunscald, sudden rain after drought and strong temperature changes are described.     

De gezondheidstoestand van klaverzaad,in verband met de keuring van dit zaad en de invloed van ontsmetting op dezen toestand

Ohne Zusammenfassung Voordracht gehouden tijdens de landbouwweek te Wageningen 3 t/m 7 Juli 1933.     

Het blauw worden der aardappelen

European Journal of Plant Pathology -     

Iets over de bestrijding van kringerigheid bij aardappelen

Summary The effect of potassium permanganate on the control of sprain in potatoes was tested in field experiments.The experiments were conducted for 3 years with the varieties Eersteling (Duke of York) and Saskia, planted in light soil.The potassium permanganate was spread on the soil and than mixed with the soil. In these experiments a dose of 90 gr/m² distinctly decreased the percentage of tubers with sprain.