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The effect of growing resistant potatoes on a potato‐root eelworm population—a microplot experiment
Author(s) -
COLE C.S.,
HOWARD H.W.
Publication year - 1962
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1962.tb05993.x
Subject(s) - biology , heterodera , solanum tuberosum , loam , agronomy , population , host (biology) , resistance (ecology) , crop , horticulture , nematode , soil water , ecology , demography , sociology
SUMMARY The effect of growing resistant potatoes bred from Solanum tuberosum subsp. andigena and of non‐host crops on a potato‐root eelworm, Heterodera rostochiensis , population was studied for 4 years in microplots of a sandy loam. The reduction in the egg population from growing resistant potatoes was about 80% per year, a higher value than had been obtained previously for a black fen soil but agreeing with Dutch and German results. After 4 years of resistant potatoes the egg population was only about 1% of the initial value, and no increase in the frequency of ‘resistance‐breaking’ (biotype B) eelworms was detectable. Reductions in the egg populations from growing non‐host crops were about 60% in the first year but very much smaller in the second to fourth years. After 4 years of non‐host crops the egg population was still about 25% of the initial value.