New Zealand Journal of Crop and Horticultural Science
abstracts
Short communication
Evaluation of the occurrence of root rots on bean plants (Phaseolus vulgaris) using different sowing methods and with different techniques of pesticide application
J. B. Valenciano
P. A. Casquero
J. A. Boto
V. Marcelo
Department of Agrarian Engineering
University of León
Ave. Portugal 41
24071 León, Spain
email: diajva@unileon.es
Abstract Root rots are the main diseases caused by
soil fungi and their incidence can vary according to seed treatment and
sowing techniques used. They cause loss of plants, limit establishment,
and can lead to reduced plant development. There are negative
correlations between yield and the presence of root rots. This work was
carried out in 1998 and 1999 in the province of León, Spain. The
factors investigated were respectively - bean landrace (Phaseolus vulgaris),
pesticide application system, and sowing technique. Differences were
noticed in response to sowing techniques where the number of damaged
plants was higher with sowing in furrows (mean, 1.31% plants affected).
With regard to pesticide application differences were only observed at
Ribas in 1999, where there was reduced plant damage (83% with seed
treated and 97% with soil treated in the row). There was a significant
pesticide application by sowing technique interaction at Ribas 1999. Rhizoctonia solani was detected in 91.8% of affected plants.
Keywords damping-off; Phaseolus vulgaris; root rot; seed treatment; sowing technique; substrate e;
New Zealand Journal of Crop and Horticultural Science, 2006, Vol. 34: 291 - 298
0014 - 0671/06/3403 - 0291 © The Royal Society of New Zealand 2006
H06011; Online publication date 5 October 2006. Received 2 February 2006; accepted 17 August 2006
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