Χρήση ανθεκτικών ποικιλιών για την αντιμετώπιση του κυστονηματώδη της πατάτας Globodera rostochiensis
Date Issued
2012
Author(s)
Abstract
Potato cyst nematodes (PCN), Globodera pallida (Stone) Behrens and G. rostochiensis
(Wollenweber) Behrens are considered to be responsible for major losses in several potato
growing areas of the eastern part of Cyprus. To alleviate losses, growers make excessive use
of nematicides having a negative impact on both the environment and human health.
Furthermore, growers attempt to use resistant varieties without knowing the level of
resistance or the target species or pathotypes.
The present study aims towards the integrated management of PCN through the utilisation of
potato varieties (Annabell, Arinda and Allians) resistant to G. rostochiensis pathootype Ro1
and the combined use of two nematicides, fosthiazate and oxamyl. Variety Spunta was used
as a control.
Resistant varieties showed a decrease in the population density of PCN in the soil whereas
the susceptible variety Spunta showed ten times increase on the population density. In all
treatments, nematicides showed a decrease in the population density in the soil. Resistant
varieties yielded well with the variety Arinda showing the highest yield among the three
resistant varieties. Similar resuslt were found with regard to tuber size. Variety Spunta
showed a significant reduction of yield and tuber size. Nematicides gave similar results in all
treatments and in all four varieties tested wheareas nematode population densities decreased
and yield remained at acceptable levels.
(Wollenweber) Behrens are considered to be responsible for major losses in several potato
growing areas of the eastern part of Cyprus. To alleviate losses, growers make excessive use
of nematicides having a negative impact on both the environment and human health.
Furthermore, growers attempt to use resistant varieties without knowing the level of
resistance or the target species or pathotypes.
The present study aims towards the integrated management of PCN through the utilisation of
potato varieties (Annabell, Arinda and Allians) resistant to G. rostochiensis pathootype Ro1
and the combined use of two nematicides, fosthiazate and oxamyl. Variety Spunta was used
as a control.
Resistant varieties showed a decrease in the population density of PCN in the soil whereas
the susceptible variety Spunta showed ten times increase on the population density. In all
treatments, nematicides showed a decrease in the population density in the soil. Resistant
varieties yielded well with the variety Arinda showing the highest yield among the three
resistant varieties. Similar resuslt were found with regard to tuber size. Variety Spunta
showed a significant reduction of yield and tuber size. Nematicides gave similar results in all
treatments and in all four varieties tested wheareas nematode population densities decreased
and yield remained at acceptable levels.
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