Effect of bottlegourd seedcoating with antagonists on seedlings, quantum of the pathogen inside the seedlings and population of the soil againstFusarium oxysporum
Bottlegourd seedlings raised from antagonists coated seeds did not show any wilting symptoms and remained completely healthy. The pathogen quantum inside the host tissue was found least. The pathogen propagules per gram of host tissue were restricted and the soil population of theFusarium oxysporum was reduced very much in antagonists introduced soil.
SOME RELATIONSHIP BETWEEN PLANT NUTRITION, FUNGAL POPULATIONS, AND INCIDENCE OF FUSARIUM WILT OF MUSKMELON.
The rate of muskmelon wilt was shown to be a function of the amount of nitrogen available to and absorbed by the plant. Since NH4NO3 nitrogen did not increase the size of the soil population of eit...
STUDIES ON FUSARIUM WILT OF BANANAS: I. THE BEHAVIOR OF F. OXYSPORUM f. CUBENSE IN DIFFERENT SOILS
The behavior in soil of Fusarium oxysporum f. cubense (E.F.S.) Sny. and Hans., the cause of Fusarium wilt or Panama disease of bananas, was studied, using soil dilution plates, soil plates, and buried slide techniques. Soil dilution plates were useful in detecting gross population changes above 500–1000 spores per gram of soil. After six to eight months, initially large populations of Fusarium in artificially infested soil had fallen to below 500 spores per gram of soil but could be detected after two years in or around infested glass cloth strips buried in banana plantations. Apparent differences between population counts in loam and sandy loam were attributed to some defect of the soil dilution plate technique.The soil plate technique consisted in adding 1 gm. of artificially infested soil to a culture dish, moistening the soil with a suitable nutrient, and observing growth and sporulation microscopically or by estimating colony increases on soil dilution plates. An external source of nutrient was essen...