New Zealand Journal of Crop and Horticultural Science abstracts
Soil solarisation: a cultural practice to reduce viability of sclerotia of
Sclerotinia sclerotiorum in New Zealand soils
J. SWAMINATHAN
K. L. MCLEAN
J. M. PAY
A. STEWART
Soil, Plant and Ecological Sciences Division
P. O. Box 84
Lincoln University
Canterbury, New Zealand
email: stewarta@lincoln.ac.nz
Abstract Soil solarisation reduced the viability of sclerotia
of
Sclerotinia sclerotiorum which were buried in the soil at a depth of
10 cm in three field trials (Lincoln 1997, 1998; Blenheim 1998).
Solarisation for 8 weeks (Lincoln and Blenheim 1998) had a greater effect than
for 4 weeks (Lincoln 1997). Sclerotial viabilities in solarised plots were
reduced to 52% (Lincoln 1997), 8% (Lincoln 1998), and 0% (Blenheim 1998)
compared to 95, 53, and 89% for non-solarised plots, respectively. Average
maximum temperatures recorded for solarised plots over the trial periods ranged
from 33 to 35deg.C, temperatures were c. 8-10deg.C lower in non-solarised
plots. The potential for using soil solarisation to reduce levels of
S.
sclerotiorum sclerotia in New Zealand horticultural soil is discussed.
Keywords Sclerotinia sclerotiorum; soil solarisation;
sclerotia; viability; temperature
H99021
Received 9 June 1999; accepted 21 September 1999
Short communication
PDF file of entire paper: medium quality (349K); (scanned from paper original: notes about this process)
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