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EFEKTYWNOŚĆ UPRAWY ODMIAN BURAKA CUKROWEGO TOLERANCYJNYCH NA MĄTWIKA BURAKOWEGO (HETERODERA SCHACHTII SCHMIDT) W WARUNKACH NISKIEJ PRESJI SZKODNIKA

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Górski D. , Ulatowska A. , Piszczek J.

2017

nr 2(88)

129-135

One field trail was carried out in Żydowo in 2015-2016. The cultivation profitability of the five sugar beet varieties tolerant to pest compered to average profitability of three varieties without tolerance was assessed. The number of living eggs and larvae of Heterodera schachtii in field soil was below the harm threshold. The results showed that the cultivation of new tolerant sugar beet varieties on a bed of low pest pressure compared to varieties without tolerance was highly profitable. It was found that the additional cost incurred for the purchase of tolerant varieties in 2015 turned from 4.0 to 7.4 times depending on the variety, whereas in 2016 from 8.4 to 35.3 times, respectively.

OCENA STANU ZAGROŻENIA PLANTACJI BURAKA CUKROWEGO PRZEZ PRZĘDZIORKA CHMIELOWCA (TETRANYCHUS URTICAE KOCH) W WOJEWÓDZTWIE KUJAWSKO-POMORSKIM

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Ulatowska A. , Górski D. , Piszczek J.

nr 4(82)

125-132

Monitoring of the two-spotted spider mite occurrence were conducted on sugar beet crop in southern districts of Kuyavian-Pomeranian Voivodeship. Observations were carried out in 2014, from June to September. A total of 662 plantations were assessed. Monitoring results showed that 60% of sugar beet plantations were settled by two-spotted spider mite, 26,3 % of them severely.