Articles
EFFECT OF NURSERY MANAGEMENT ON SUBSEQUENT FUSARIUM DECLINE OF ASPARAGUS IN FIELD.
Article number
271_43
Pages
299 – 304
Language
Abstract
In a previously reported work (Di Lenna et al., 1988) the effect of seed disinfection (Benomyl 2.5 % in acetone) and soil disinfection (Prochloraz, Thiabendazole, Dazomet and Metham sodium) on Fusarium oxysporum population in soil and on morphological and sanitary characteristics of crowns produced in four typical asparagus-growing areas in the Veneto Region, was studied.
The experiment here described was planned to find out if the management of nursery might have an effect on the response of the culture to Fusarium decline in the years following the transplant.
With this aim, randomly chosen asparagus crowns from each of the nursery plots were used to set up a further trial on a soil where in the past asparagus crop suffered from important losses caused by Fusarium decline.
During the following three years, number of survived plants, number of stems per plant and their height, were recorded.
Among the studied factors (nurseries locality, seed treatment, soil disinfection), "locality" showed the higher positive correlation with the percentage of survived plant.
With or without seed treatment and whichever was the chemical disinfection of soil, crowns produced in the nurseries of Ceregnano and Zero Branco (presenting the lowest values of necrotic roots and Infection indexes at the transplanting time) at the end of 1988 season showed the highest percentages of survived plants.
The possible positive role of some biotic factor present into the nursery soil is briefly discussed.
The experiment here described was planned to find out if the management of nursery might have an effect on the response of the culture to Fusarium decline in the years following the transplant.
With this aim, randomly chosen asparagus crowns from each of the nursery plots were used to set up a further trial on a soil where in the past asparagus crop suffered from important losses caused by Fusarium decline.
During the following three years, number of survived plants, number of stems per plant and their height, were recorded.
Among the studied factors (nurseries locality, seed treatment, soil disinfection), "locality" showed the higher positive correlation with the percentage of survived plant.
With or without seed treatment and whichever was the chemical disinfection of soil, crowns produced in the nurseries of Ceregnano and Zero Branco (presenting the lowest values of necrotic roots and Infection indexes at the transplanting time) at the end of 1988 season showed the highest percentages of survived plants.
The possible positive role of some biotic factor present into the nursery soil is briefly discussed.
Publication
Authors
P. Di Lenna, B. Foletto
Keywords
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