Wyniki wyszukiwania

1

Movement of invasive larvae of Steinernema feltiae (Filipjev) in soil

100%

Sander H.

Annals of Warsaw Agricultural University. Animal Science

|

1986

|

tom 20

2

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The Dunkeld larch (Larix x marschlinsii Coaz) in Estonia

63%

Sander H., Laanelaid A.

Dendrobiology

|

2007

|

tom 57

73-80

It is commonly known that Japanese larch, Larix kaempferi was first introduced in Europe in Great Britain in 1861. In the presence of European larches, L. decidua it was not long before the first hybrids between these species, called Dunkeld larches (Larix × marschlinsii), emerged there. It was found that there were several hybrid larch trees in Estonia that sprouted before one of their parent species was introduced in Europe. One of the oldest Dunkeld larches growing in Tallinn is about 210 years old. The radial growth of three Dunkeld larches in Estonia (in the cities of Pärnu and Tallinn and in the manor park of Suure-Kambja) and the determination of their age by cumulative growth graphs are discussed, with consideration given to the available knowledge on the introduction of Japanese larch. The conclusion is that there may have existed earlier alternative introduction routes of Japanese larch into northern Europe via Russia.

3

Sympozjum Nematologiczne w Hamburgu, 5-7.IX.1957

63%

Sander H.

Wiadomości Parazytologiczne

|

1958

|

tom 04

|

nr 1

4

Badania nad nicieniami pasożytami owadów

51%

Sander H., Fedorko A., Stanuszek S., Wisniewska E.

Wiadomości Parazytologiczne

|

1968

|

tom 14

|

nr 1

In Poland, investigations of nematode parasites of insects had not been carried out at all. The present study is aimed at gaining information on the parasitic nematofauna of the most common insect pests and on its influence on the abundance of the latter. We have taken the term parasitic nematofauna to mean nematodes living in the body of insects - whatever the type of relation with the host. More than 10000 examinations of insect pests, carried out in the years 1965-1966 have disclosed the existence of nematodes in their bodies. Analyses of grubs Melotontha sp.) and of adult forms of Colorado beetle were of greatest interest. It was found that some of the grubs were greatly infested with nematodes, chiefly with Cephalobellus papilliger Cobb (Thelastomatidae) although no harm was inflicted on the hostes by the nematodes. Several examinations of adult hibernating Colorado beetles revealed that most of them were infested with nematodes belonging to the Diplogasteridae family. All infested Colorado beetles perished in a short time. We have worked out a method for culturing this species of nematodes on artificial media. Moreover attempts at biological control of Colorado beetle were made by spraying the beetles with a water suspension of nematodes. The results were successful and this method may prove of use in insect control. Numerous summertime post-mortem examinations of larvae and adult forms of Colorado beetle have revealed that in the southern regions of Poland nematodes belonging to the Mermithidae family, play an essential role in reducing the abundance of Colorado beetle.

5

Sympozja na temat patogenów owadów i ich wykorzystania (Moskwa: 19-21 XI 1980 i 23-28 III 1981)

51%

Sander H.

Wiadomości Entomologiczne

|

1981

|

tom 02

|

nr 3-4

6

Zagadnienie stonki ziemniaczanej w Polsce

20%

Alwin S., Sander H.

Wszechświat

|

1955

|

nr 03

Ograniczanie wyników

2 Wiadomości Parazytologiczne

1 Annals of Warsaw Agricultural University. Animal Science

1 Dendrobiology

1 Wiadomości Entomologiczne

1 Wszechświat

6 Sander H.

1 Alwin S.

1 Fedorko A.

1 Laanelaid A.

1 Stanuszek S.

1 Wisniewska E.

1 2007

1 1986

1 1981

1 1968

1 1958

1 1955

Movement of invasive larvae of Steinernema feltiae (Filipjev) in soil

The Dunkeld larch (Larix x marschlinsii Coaz) in Estonia

Sympozjum Nematologiczne w Hamburgu, 5-7.IX.1957

Badania nad nicieniami pasożytami owadów

Sympozja na temat patogenów owadów i ich wykorzystania (Moskwa: 19-21 XI 1980 i 23-28 III 1981)

Zagadnienie stonki ziemniaczanej w Polsce