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1

Harmfulness of European corn borer (Ostrinia nubilalis Hbn.) to maize (Zea mays L.) in south-eastern Poland in 1994–2011

100%
Beres P. K.
Progress in Plant Protection
|
2012
|
tom 52
|
nr 1
The European corn borer (Ostrinia nubilalis Hbn.) has been recorded in maize crops in the south-eastern Poland since 1994. During the first year of the research conducted, the pest caterpillars damaged 2.7% of maize plants. A quick increase in their harmfulness was observed in the subsequent years. The percentage of damaged plants exceeded 60 in 1998 and reached the highest level – 98.5 in 2003. In 2004–2011 the percentage of plants with signs of caterpillar feeding ranged from 62.5 to 94.0. With the increasing number of plants infested by O. nubilalis, the number of damaged cobs also increased. The pest damaged 1.8 to 91.5% of maize cobs during the period of conducted research. Apart from direct feeding of kernels, the caterpillars gnawed through the cob bases, and that often resulted in their breaking off and falling onto the ground. A percentage of cobs gnawed at their bases and fallen to the ground ranged from 0.2 to 1.2 in the years 2004–2011. Breaking of stalks below a cob was also regarded as a serious damage to maize plants caused by the caterpillars, and the percentage value of the damage ranged 0.5 to 33.7. A type of damage caused by O. nubilalis depended on the pest infestation. On average 1.7 to 4.7 caterpillars fed on one maize plant during 2002–2011.
2

Chemiczna ochrona kukurydzy przed omacnicą prosowianką - zalecenia na 2015 rok

100%
Beres P. K.
Nowoczesna Uprawa
|
2015
|
nr 06
3

Sygnal do walki

100%
Beres P. K.
Farmer
|
2010
|
nr 08
16-19
4

Modliszki - czy w Polsce zaczyna się era nowego owada pożytecznego?

100%
Beres P. K.
Hasło Ogrodnicze
|
2018
|
nr 11
5

Efekty chemicznego zwalczania przylżeńców (Thysanoptera) na kukurydzy w okolicach Przeworska w latach 2008–2009

100%
Beres P. K.
Progress in Plant Protection
|
2010
|
tom 50
|
nr 1
The research on results of chemical control of thrips (Thysanoptera) took place in Krzeczowice near Przeworsk in 2008–2009. The seed dressings used were: Gaucho 600 FS (imidacloprid), Mesurol 500 FS (methiocarb) and Poncho 600 FS (clothianidin). They effectively protected maize plants against thrips feeding for a period of about 10 weeks from sowing. Chemical control of European corn borer (Ostrinia nubilalis Hbn.), performed in the first and second decade of July using formulations Karate Zeon 050 CS (lambda-cyhalothrin) and Proteus 110 OD (thiacloprid + deltamethrin), also effectively limited the number of thrips in the period of their mass occurrence. The highest effectiveness was observed following two applications of tested insecticides.
6

Występowanie i szkodliwość urazka kukurydzianego (Glischrochilus quadrisignatus Say) na kukurydzy w południowo-wschodniej Polsce w latach 2005–2008

100%
Beres P. K.
Progress in Plant Protection
|
2009
|
tom 49
|
nr 1
7

Alternatywa dla omacnicy i stonki

100%
Beres P. K.
Hasło Ogrodnicze
|
2018
|
nr 08
8

Co podgryza kukurydzę\?

100%
Beres P. K.
Agrotechnika. Poradnik Rolnika
|
2016
|
nr 06
9

Czy należy obawiać się stonki kukurydzianej na Podlasiu

100%
Beres P. K.
Wiadomości Rolnicze. Podlaski Ośrodek Doradztwa Rolniczego w Szepietowie
|
2016
|
nr 09
10
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

The occurrence of aphids on sweet maize in south-eastern Poland

100%
Beres P. K.
Acta Scientiarum Polonorum. Hortorum Cultus
|
2015
|
tom 14
|
nr 6
In Poland sweet maize is a small-acreage crop, and because of this no complex plan for the protection of this plant against pests and other harmful organisms has been developed. Since the enforcement of integrated pest management (IPM) in the EU in 2014 the use of chemical control methods has to be supported by relevant data on the biology of the controlled pest. A very limited number of studies have been carried out in Poland on the harmful entomofauna of sweet maize, including aphids. Studies were carried out in 2009–2014 on a field of sweet maize (Zea mays L. var. saccharata), ‘Candle’ cultivar, in south-eastern Poland. In the study years the infestation with aphids was from very low to moderately high. Seven aphid species were identified on sweet maize. The above-ground plant parts were infested with Rhopalosiphum padi L., Metopolophium dirhodum Walk., Sitobion avenae F., Rhopalosiphum maidis Fitch., Aphis fabae Scop. and Myzus persicae Sulz. A small number of individuals representing Tetraunera ulmi L. were found on the root systems of plants. R. padi was the dominant aphid species in all study years.M. dir-hodum and S. aveane occurred in lower numbers, while other aphid species formed single colonies. Aphids began to infest maize plants from the last ten days of April or from May, and ended feeding at the end of September or in the first half of October. Two or three peaks of mixed-species aphid populations were observed on sweet maize plants, with the first peak being the most abundant. Individual aphid species had from one to three population peaks on plants, but the general dynamics of insect occurrence was affected mainly by the two most abundant species: R. padi and M. dirhodum.
11

Ploniarka zagraża kukurydzy

100%
Beres P. K.
Top Agrar Polska
|
2011
|
nr 03
12

Harmfulness of Ostrinia nubilalis Hbn. on some non-Bt Versus genetically modified Bt maize [Zea mays L.] cultivars in Poland in 2006-2007

100%
Beres P. K.
Journal of Plant Protection Research
|
2010
|
tom 50
|
nr 1
110-116
European corn borer (ECB) (Ostrinia nubilalis Hbn.) is currently the most dangerous maize pest in Poland. During last five years the pest was recorded in 14 Polish voivodeships, covering over half of the country's area. The greatest harmful activity of the caterpillars was observed in warm southern regions of Poland. Field experiments carried out in southern Poland in the 2006-2007 growing seasons demonstrated that the average plant damage of non-Bt hybrids by O. nubilalis caterpillars varied between 40.0% and 44.0% in 5 locations and two seasons. Under the same pest pressure a high level of resistance of genetically modified (GM) Bt maize (MON 810) cultivars, expressing Cry1Ab toxic protein to infestation by ECB was noted. The average plant infestation of transgenic hybrids was equal to 0.5-0.7% in the same locations. Only some slight symptoms of injuries, such as small number of holes in stalks and gnawing of cobs was observed. Moreover, the tested transgenic hybrids demonstrated a high suitability for climate and soil conditions in Poland, providing early crops of high yield.
13
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

The occurrence and harmfulness of Oscinella frit L. (Diptera: Chloropidae) to maize cultivars cultivated for grain in South-Eastern Poland

100%
Beres P. K.
Acta Scientiarum Polonorum. Agricultura
|
2015
|
tom 14
|
nr 3
Long-term studies on the occurrence of frit fly (Oscinella frit) on maize were carried out in 2001-2014, in Krzeczowice, south-eastern Poland. In the analysed period, O. frit larvae damaged from 3.5 to 42.2% of plants of a medium-early maturing (FAO 240) maize cultivar (mean 25.2%), causing theoretical loss in grain yield from 0.4 to 8.1% (mean 4.5%). Studies on the susceptibility of maize to frit fly were carried out in 2009-2011 on 18 cultivars from three earliness categories: early (FAO 190-220), medium-early (FAO 230-250) and medium-late (FAO 260-290). In the analysed 3-year period larvae of O. frit damaged, on average, from 20.4 to 32.3% of plants of cultivars, causing a mean theoretical loss in grain yield from 2.9 to 4.7%. Statistically significant differences were found between the susceptibility of cultivars to damage caused by O. frit. Medium-late maturing maize cultivars were significantly more often damaged by frit fly than the early maturing cultivars.
14

Ochrona kukurydzy przed omacnicą prosowianką z wykorzystaniem tiachlorpydu i deltametryny

100%
Beres P. K.
Kukurydza
|
2014
|
nr 1
15

Szkodniki kukurydzy w okresie jesiennym - zapobieganie stratom przez nie powodowanym

100%
Beres P. K.
Kukurydza
|
2009
|
nr 2
39-41
16

Mniej znane gatunki z gromady owadów (Insecta) zasiedlające rośliny kukurydzy (Zea mays L.) w południowo-wschodniej Polsce w latach 2005–2010

100%
Beres P. K.
Progress in Plant Protection
|
2011
|
tom 51
|
nr 1
Studies conducted in the years 2005–2010 showed that maize plants (Zea mays L.) in the south-eastern part of Poland are damaged by a large number of harmful insects. In addition to the insect species occurring on maize for many years, the presence of new species, not recorded yet was also stated in the studied region. The conducted studies confirmed that maize is an attractive source of food for many harmful organisms, including those ones causing no serious damage to maize plants, and thus not directly affecting the yield.
17

Zaprawy nasienne kontra szkodniki kukurydzy

100%
Beres P. K.
Raport Rolny
|
2010
|
nr 01-02
35-37
18

Oko w oko

100%
Beres P. K.
Farmer
|
2010
|
nr 11
27-29
19

Zalecenia ochrony kukurydzy przed szkodnikami w 2010 roku

100%
Beres P. K.
Kukurydza
|
2010
|
nr 1
40
20
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Usefulness of selected seed dressing insecticides for integrated maize (Zea mays L.) protection against frit fly (Oscinella frit L.)

100%
Beres P. K.
Acta Scientiarum Polonorum. Agricultura
|
2011
|
tom 10
|
nr 4
Studies were carried out in years 2006-2010 in south-eastern Poland in Krzeczowice near Przeworsk (49°59’ N; 22°27’ E). In the experiment, insecticide formulations were used that contained imidacloprid (Gaucho 600 FS and Couraze 350 FS) and methiocarb (Mesurol 500 FS). During the years of the research, the percentage of plants damaged by frit fly larvae in the control plots varied from 13.5% to 38.2%. All insecticides in the studied doses showed high efficiency in limiting the harmfulness of the above species. By applying formulations that contained imidacloprid, the number of plants damaged by larvae was limited by 69.6%-98.1%, while in the case of the insecticide that contained methiocarb, by 65.1%-96.2%. The pre-sowing treatment of maize grain with the studied insecticides also resulted in higher grain yield. Following the application of imidacloprid, the increase in grain yield ranged from 3.1% to 17.3%, while in the case of methiocarb, from 1.5% to 10.4%.
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