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1
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Wazniejsze choroby grzybowe, bakteryjne oraz niepatogeniczne, wystepujace na plantacjach nasiennych

100%
Kapsa J.
Ziemniak Polski
|
1996
|
nr 4
37-45
2

Zaraza [Phytophthora infestans] wystepujaca na lodygach - nowy problem na plantacjach ziemniaka

80%
Kapsa J.
Acta Agrobotanica
|
2002
|
tom 55
|
nr 1
127-136
In recent years changes in the occurrence of the first potato late blight (Phytophthora infestans) symptoms have been noted. Observations of potato crops have showed that occurrence of the blight symptoms is sometimes on the stem instead on the leaves. The aim of the study carried out in 1995-2001 was to determine occurrence and harmfulness of the stem late blight infections. Survey of many potato crops: 490 potato fields) made in 1997-2001, around Poland enabled assessment of the incidence of stem blight. Average 69,1% of observed crops were affected with m blight. The stem blight incidence was not connected with the rate of the leaf of late blight developing on the foliage. Stem form of the disease has appeared are often in the years with less rainfall during June and July. Its occurrence was influenced by micro climate inside potato canopy. Glasshouse experiments confirmed the importance of stem lesions in decreasing yield (11,2-42,9%) and increasing tuber infections. Results have shown that s contaminated with spores were the least probable source of the stem form of late blight.
3

Grzyby stanowiace potencjalne zagrozenie dla przechowywanych owocow zurawiny wielkoowocowej [Vaccinium macrocarpon Aiton]

80%
Bryk H.
Progress in Plant Protection
|
2007
|
tom 47
|
nr 2
66-68
4

Porownanie toksycznego dzialania litu na niektore gatunki roslin

80%
Jurkowska H., Rogoz A., Wojciechowicz T.
Acta Agraria et Silvestria. Series Agraria
|
1997
|
tom 35
45-50
The influence of a big dose of lithium (25 mg x kg-1) on the development, appearance and crop yield of some plant species was investigated in a pot experiment. The plants reaction was higly diversified. Spinach and maize showed resistance to the applied lithium dose, whereas other species revealed disease symptoms and their yield decreased to lesser or greater degree.
5

A comparison of nucleic acid content in Balantidium coli trophozoites from different isolates

80%
Skotarczak B., Zielinski R.
Folia Biologica
|
1997
|
tom 45
|
nr 3-4
6

Wplyw wybranych czynnikow na wystepowanie chwoscika marchwi [Cercospora carotae [Pass.] Kasnov.]

71%
Weber Z., Przygodzinski P.
Progress in Plant Protection
|
2005
|
tom 45
|
nr 2
1190-1193
7

Zwalczanie bakteriozy pierscieniowej ziemniaka - zalecenia praktyczne

71%
Pawlak A.
Ziemniak Polski
|
2006
|
tom 16
|
nr 2
26-31
8

Zgnilizna rzepaku (Typhula spp.)

61%
Korbas M., Wos H.
Progress in Plant Protection
|
2010
|
tom 50
|
nr 3
Numerous fungi occurring on oilseed rape cause losses of the seed yield. Causal agents of the incited disease are associated with plants for the whole season, but some of them can be observed only in specific phases of growth. In 2009 and 2010 in the spring time symptoms of infestation of oilseed rape by Typhula species were observed. The aim of the study was to define and identify the causal agents of snow mould of oilseed rape and its harmfulness to plants. It was the first attempt of describing Typhula genus on oilseed rape in Poland. Varieties of oil seed rape infected with Typhula spp. were examined. Field experiments were carried out in Wielkopolska region, Plants Breeding Station Borowo, Department Borowo Ltd., IHAR Group, and the Experimental Station of Testing Varieties Chrząstowo. The occurrence and harmfulness of the disease was strictly connected with the length of time of remaining snow cover on examined fields. The disease can be dangerous only locally and its occurrence is related to specific periods. It is possible that different varieties of oilseed rape are much more resistant to this pathogen than others.
9
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Wystepowanie symptomow chorobowych i wybranych czynnikow biotycznych zwiazanych ze zjawiskiem zamierania buka [Fagus sylvatica L.] w drzewostanach Magurskiego Parku Narodowego

61%
Rojek P.
Acta Agrobotanica
|
2005
|
tom 58
|
nr 2
441-452
The studies were carried out in 12 beech stands, growing on mountain fresh forest site in Magurski National Park. Stands differed in respect of exposition (northern and southern) and age - lower age classes (21-60 years old) and higher age classes (81-120 years old). This paper presents evaluation of frequency of disease symptoms occurrence in the crowns and on the trunks of beeches. The presence and the place of occurrence of fungus Ascodichaena rugosa and insects Cryptococcus fagisuga and Ectoedemia liebwerdella, which could be connected with beech bark necrosis on the trunks were noted down. In each stand 50 trees, growing side by side in center of the stand, were analyzed. Among 600 analyzed trees of Fagus sylvatica, 2.6% had a dead top. Crown thinning were present on 51.8% of trees. It appeared frequently in higher age class stands and didn’t cover more than ¼ of the crown. Moreover, in crowns of 4.1% of trees the leaf chlorosis appeared. The most frequent symptom on trunks of beeches were local necroses (98% of trees), that were sometimes connected with slime fluxing (3.3%). Necroses were the most number in stands growing on the southern exposition and on south parts of the trunks. Cryptococcus fagisuga appeared mostly in high age class stands. Intensity of its appearance was similar on the trees growing on the southern and northern exposition (respectively, 48.3% and 53.3%). Particular parts of the trunks were colonized with similar frequency by C. fagisuga irrespective of cardinal points (N-29.3%; S-21.7%; W-22.7%; E-26.2%) and number of necroses on the trunks. Ascodichaena rugosa appeared on 8.6% of trees, more frequently on their north parts of the trunks (7.3%). In the places colonized by fungi A. rugosa, insect C. fagisuga was absent. Occurrence of larvae of Ectoedemia liebwerdella was mostly found on trunks of beeches growing on the southern exposition (43.0%), on 35.3% of trees they colonized south parts of trunks. There wasn’t observed any connection between the occurrence of these larvae and symptoms of local necroses.
10

Wplyw antybiotykow na wystepowanie objawow karlowatosci magnolii

61%
Kaminska M., Sliwa H.
Acta Agrobotanica
|
2002
|
tom 55
|
nr 1
107-117
Treatment of diseased magnolia plants with oxytetracycline, baytril and tylan did not reduce the number of symptomatic plants. However, the sprays with antibiotics promoted the shoot growth, development of symptomless leaves and flower buds. The most efficient were baytril at the concentration of 500 ppm, tylan 200 ppm and oxytetracycline at the concentration of 500 or 1000 ppm. Lower concentrations of baytril and oxytetracycline were not so much effective; higher 'concentration of tylan decreased the magnolia shoot growth. The effect of antibiotics lasted one season. Ali the antibiotic treated and control plants, randomly sted by PCR-RFLP, showed the presence of A Y (16SrI) phytoplasma and some f them were affected with phytoplasma related with apple proliferation hytoplasma group (16SrX). The obtained results indicated that l) magnolia is a natural host plant of phytoplasmas belonging to aster yellows phytoplasma group d apple proliferation group and 2) they support the suggestion that phytoplasmas the casual agents of magnolia stunting disease.
11

Szkodliwosc i mozliwosci zwalczania niektorych maczniakow rzekomych na roslinach ozdobnych w Polsce

51%
Skrzypczak C.
Progress in Plant Protection
|
2006
|
tom 46
|
nr 1
121-126
12

Zarazki zoonotyczne - potencjalne zagrozenie bezpieczenstwa zywnosci

51%
Molenda J., Bystron J., Bania J.
Acta Scientiarum Polonorum. Medicina Veterinaria
|
2008
|
tom 07
|
nr 3
49-58
13
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Badania nad zamieraniem jesionu [Fraxinus excelsior L.] w drzewostanach Nadlesnictwa Wloszczowa

51%
Kowalski T., Lukomska A.
Acta Agrobotanica
|
2005
|
tom 58
|
nr 2
429-439
The studies were carried out in the Włoszczowa Forest Unit, in 9 ash stands differing in respect of age, origin (natural, artificial), site and in the nursery on 3 quarters differing due to a silvicultural method (transplanted and not transplanted) and seedlings age. In each stand an analysis of disease symptoms was carried out on 100 trees (2 - 20 years old stands) or 50 trees (21 - 80 years old stands) growing side by side in central part of the stand, while in the nursery in each block 200 seedlings were analyzed (4 sectors with 50 seedlings each). From the infected seedlings and trees 120 fragments of dead branches, living branches with cankers, and dead roots were taken. Identification of fungi was made on the basis of fructification and over 300 isolations of fungi on malt agar medium. The most frequent disease symptoms in ash stands were: the dead top (34.7% trees), the dying of whole branches (83.5%), the dying of the top of branches (20.1%), the occurrence of healed (36.0%) and unhealed cankers (18.9%) and the slime flux (23.7%) on the trunk, also the chlorosis of leaves (7.5%) and their atrophy (11.2%). Most of the types of disease symptoms appeared irrespectively of the tree age, origin and site, sometimes showing only a difference in the frequency of occurrence. On the seedlings in the nursery the shoot discolouration, healed and unhealed cankers on shoots and necrosis of a part of leaves were recorded most frequently. Disease symptoms occurred more frequently on 4-year-old seedlings in comparison with 3-year-old. In respect of transplanted seedlings the leaves dying was more frequent. Within cankers and on dead tops of shoots the most frequent were: Alternaria alternata, Chalara sp., Cytospora ambiens, Diplodia mutila, Fusarium lateritium, Gloeosporidiella turgida, Phomopsis controversa and Phomopsis scobina. In sparsely found dead roots of living trees appeared mostly: Cryptosporiopsis radicicola, Cylindrocarpon destructans and Phialocephala sp.
14

Choroby Amaranthus hybridus L. i mozliwosci ich zwalczania

41%
Korbas M.
Progress in Plant Protection
|
2006
|
tom 46
|
nr 1
127-131
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