Control of Globodera rostochiensis on potato with fumigant and non fumigant nematicides
AbstractThe potato cyst nematode, Globodera rostochiensis (Woll.), is widespread and economically important on potato (Solanum tuberosum L.) in Italy. The tolerance limit of potato varieties susceptible to G. rostochiensis is 1.9 eggs and juveniles per g of soil (Greco et al., 1982c). Resistant potato cultivars offer promise in controlling the nematode, but more than one G. rostochiensis pathotype may occur in the same field. Several investigators (Giunchi and Tacconi, 1973; Moss et ai., 1975; Tacconi and Ugolini, 1971; Trudgill et aI., 1978) have demonstrated that nematicides are useful for the control of G. rostochiensis when included in an integrated pest management programme. However, in Italy, information is lacking on the effect of nematicides on the viability of the eggs within the nematode cysts under field conditions. Therefore, an experiment was conducted in 1982 in the Fucino area of central Italy, to study the effect of several nematicides on G. rostochiensis and potato yield.