Open AccessModelling fungal spore dispersal using Neonectria ditissima
Author(s) -
Monika Walter,
N.T. Amponsah,
D.R. Wallis,
T. Curnow,
R. Lamberts,
O.D. Stevenson,
A. J. Hall
Publication year - 2015
Publication title -
proceedings of the new zealand weed and pest control conference/new zealand plant protection/proceedings of the ... national weeds conference/proceedings of the new zealand weed control conference/proceedings of the new zealand plant protection conference
Language(s) - English
Resource type - Journals
eISSN - 0370-2804
pISSN - 0370-0968
DOI - 10.30843/nzpp.2015.68.5856
Subject(s) - splash , conidium , spore , biological dispersal , biology , canker , trap (plumbing) , horticulture , botany , hydrology (agriculture) , environmental science , meteorology , environmental engineering , geology , physics , geotechnical engineering , population , demography , sociology
Neonectria ditissima is the causal organism of European canker in apple Conidia are formed in sporodochia in canker lesions and released during rain The splash pattern of conidia was monitored in four directions from a central inoculum source held at approximately 17 m height using vertical and horizontal rain traps trap plants and petroleumjellycoated glass slides during simulated rain events Nonlinear models were fitted to the conidia count data to estimate the proportion of inoculum exceeding any distance from the inoculum source When fitted to horizontal rain trap data the model suggested that half of all spores splashed beyond 042 m from the inoculum source and 4 travelled over 2 m Conidia were observed at a greater distance from the inoculum source using rain traps than glass slides In a separate set of experiments water was dropped in single droplets from various heights onto either a sealed surface or bare soil and watersensitive paper was used to estimate droplet sizes and dispersal (height and distance) Water droplets were found to splash up to 120 cm outwards and 60 cm upwards Smaller droplets travelled further than larger droplets