Groenekennis

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    Groenekennis - Informatie voor professionals in voedsel en groen

    Groenekennis bevat artikelen uit vaktijdschriften, rapporten, video’s, presentaties, posters en websites op het gebied van landbouw, visserij, groene ruimte en voeding. Groenekennis wordt dagelijks bijgewerkt en bevat ongeveer 500.000 bronnen.

    Groenekennis is de globale view over diverse deelbestanden. Groenekennis is gevuld met alle informatie uit Groen Kennisnet, de Hydrotheek, Tuinpad, IB archief, ARTIK, bioKennis, Kennisbank Plantaardige bronnen, Kennisbank Zeldzame landbouwhuisdieren en afgesloten documentatiebestanden zoals Land Bodem Water en Consumenten- en huishoudstudies.

    Groen Kennisnet is een zeer belangrijk onderdeel van Groenekennis. De doelstelling van Groen Kennisnet is kennis delen op het gebied van Voedsel en Groen te bevorderen en te faciliteren voor een breed publiek.

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Ogma formosum sp. n. and Radopholus antoni sp. n., with notes on Criconema sirgeli Van den Berg & Meyer, 1987 (Nemata: Tylenchina) from South Africa \ Journal of nematode morphology and systematics [Artikel]
Berg, E. van den \ Heyns, J. \ Tiedt, L.R. \ 2000
Two new species of tylenchid nematodes from South Africa are described and illustrated. Ogma formosum sp. nov. females are characterized by having one lip annulus, a 89-104 micro m-long stylet and 44 to 46 retrorse annuli with 24 to 30 contiguous pal ...
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Notes on some plant-parasitic nematodes from South America \ Nematologica : international journal of nematological research [Artikel]
Berg, E. van den \ Heyns, J. \ 1997
Measurements, new information on the morphology and illustrations consisting of drawings and SEM photos are given for Criconema annuliferum (from Chile, new record), Criconema orellanai (Chile) and Hoplolaimus diadematus (French Guiana). Tylenchorhyn ...
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New and known species of Xiphinema (Nematoda: Longidoridae) from Kenya \ Nematologica : international journal of nematological research [Artikel]
Coomans, A. \ Heyns, J. \ 1997
This first report on a collection of Xiphinema species from Kenya deals with 3 species. Xiphinema mwanzianum sp. nov. from sandy soil is closest to X. paritaliae but differs in vulva position, body length (L = 2.36 mm), stylet length (141-146 micro m ...
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A survey of Longidoridae in vineyards along the Berg river system \ Phytophylactica : plantbeskermingswetenskappe en mikrobiologie = Phytophylactica : plant protection sciences and microbiology [Artikel]
Reenen, E. van \ Heyns, J. \ 1986
A survey of Longidoridae was made on 61 soil samples collected from vineyards along the Berg River system, South Africa. 15 Xiphinema, 2 Longidorus and one Longidoroides species were found. The most common and widely distributed Xiphinema species fou ...
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Medalinema mopanicum n.sp. from Botswana (Nematoda: Thornenematidae) \ Phytophylactica : plantbeskermingswetenskappe en mikrobiologie = Phytophylactica : plant protection sciences and microbiology [Artikel]
Reenen, E. van \ Heyns, J. \ 1986
M. mopanicum n.sp., from the rhizosphere of Colaphospermum mopane, from Botswana is described and figured. It differs from the closely related M. coomansi in having strong labial and cephalic sclerotization, a longer tail (199 micro m), smaller c rat ...
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Three new species of the genus Thonus Thorne, 1974 and a redescription of Tylencholaimus dorae Kruger, 1965 (Nematoda: Dorylaimida) \ Phytophylactica : plantbeskermingswetenskappe en mikrobiologie = Phytophylactica : plant protection sciences and microbiology [Artikel]
Reenen, E. van \ Heyns, J. \ 1986
Thonus annae n.sp., T. surikae n.sp. and T. christiani n.sp. are described and illustrated from South Africa. They are distinguished from other Thonus species by the exceptionally long basal oesophageal bulb which occupies 56-69% of the total neck le ...
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Skibbenema constrictum n.gen., n.sp. (Nematoda: Qudsianematidae) from the Transvaal, with a note on the female reproductive system \ Phytophylactica : plantbeskermingswetenskappe en mikrobiologie = Phytophylactica : plant protection sciences and microbiology [Artikel]
Reenen, E. van \ Heyns, J. \ 1986
Skibbenema n.g. is described from the Transvaal, South Africa. It is separated from the genera of the Qudsianematidae by the presence of a constriction between the anterior slender oesophagus and the basal bulb. The oesophagus is very long (b=3.6-4) ...
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The genus Xiphinema in southern Africa. XII. Description of Xiphinema loteni n.sp. from Natal (Nematoda: Dorylaimida) \ Phytophylactica : plantbeskermingswetenskappe en mikrobiologie = Phytophylactica : plant protection sciences and microbiology [Artikel]
Heyns, J. \ 1986
X. loteni n.sp. found in soil samples under grasses and Crassula sp. in virgin veld in the Loteni Nature Reserve, Natal, and under grasses and other vegetation in the Umkomaas valley, South Africa, is described and figured. It is characterized by the ...
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Occurrence of Xiphinema in South African plant improvement vineyards \ Phytophylactica : plantbeskermingswetenskappe en mikrobiologie = Phytophylactica : plant protection sciences and microbiology [Artikel]
Barbercheck, M. \ Heyns, J. \ 1986
Xiphinema spp. were found in 102 of 156 vineyards in south Africa surveyed between 1982 and 1984. X. meridianum was the most common of the 13 spp. found. X. index, a vector of grapevine fanleaf virus, was found in one sample from the Worcester distri ...
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Two new Elaphonema species from the Cape Province (Nematoda: Rhabditida) \ Phytophylactica : plantbeskermingswetenskappe en mikrobiologie = Phytophylactica : plant protection sciences and microbiology [Artikel]
Berg, E. van den \ Meyer, A.J. \ Heyns, J. \ 1986
E. karooense n.sp. and E. proteae n.sp. from grasses in South Africa are described and illustrated. E. karooense is characterized by a greater body length (717-730 micro m), a vulval area which stretches over 20-23 annules and spicules which appear t ...
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Oncholaimus jessicae n.sp. (Nematoda: Oncholaimidae) from fresh water in the Transvaal \ South African Journal of Zoology [Artikel]
Coomans, A. \ Heyns, J. \ 1986
O. jessicae n.sp. is described from several sites on the Blyde River system in the eastern Transvaal, South Africa. It closely resembles O. deconincki but differs from it in the absence of males and details of the demanian system: the ductus entericu ...
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Cuticularised spirals in the anterior body wall of Longidoroides hooperi (Heyns, 1966) (Nematoda: Longidoridae) \ Phytophylactica : plantbeskermingswetenskappe en mikrobiologie = Phytophylactica : plant protection sciences and microbiology [Artikel]
Jacobs, P.J.F. \ Heyns, J. \ Loots, G.C. \ Tiedt, L. \ 1986
TEM studies show that the cuticularised spirals in the anterior body wall of L. hooperi are located between the 3rd fibrous layer and the basal layer of the cuticle. It is thought that these spirals provide elasticity to the body wall and play a role ...
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The genus Xiphinema in south Africa. XIII. description of X. coomansi n.sp. and X. magaliesmontanum n.sp. from Transvaal (Nematoda: Dorylaimida) \ Phytophylactica : plantbeskermingswetenskappe en mikrobiologie = Phytophylactica : plant protection sciences and microbiology [Artikel]
Kruger, J.C.D. \ Heyns, J. \ 1986
X. coomansi n.sp., collected from soil around the roots of grasses in Hoedspruit, eastern Transvaal Lowveld, South Africa, is most closely related to X. louisi. It can be distinguished from it by the shorter basal bulb (78-94 micro m), the shape of t ...
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A study of Xiphinema brevicolle sensu Heyns, 1974 (Nematoda) \ Phytophylactica : plantbeskermingswetenskappe en mikrobiologie = Phytophylactica : plant protection sciences and microbiology [Artikel]
Kruger, J.C.deW. \ Heyns, J. \ 1986
A thorough morphometrical and morphological study of all the available material of X. brevicolle from South Africa led to the conclusion that this species conforms more closely with X. diffusum than with X. brevicolle. However it is thought that the ...
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On the identity of Dorylaimellus montenegricus Andrassy, 1959, D. Monticolus Clark, 1963 and D. directus Heyns, 1963 (Nematoda: Belondiroidea) \ Phytophylactica : plantbeskermingswetenskappe en mikrobiologie = Phytophylactica : plant protection sciences and microbiology [Artikel]
Heyns, J. \ Jordaan, R. \ 1985
A brief outline is given of the taxonomic history of the 3 closely related species D. montenegricus, D. monticolus and D. directus. Measurements are given for new populations of D. directus from South Africa. Type specimens of D. directus and D. mont ...
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Elaphonema messinae sp.n. from the northern Transvaal (Nematoda: Rhabditida) \ Phytophylactica : plantbeskermingswetenskappe en mikrobiologie = Phytophylactica : plant protection sciences and microbiology [Artikel]
Berg, E. van den \ Swart, A. \ Heyns, J. \ 1985
E. messinae n.sp. from a dry river bed in Transvaal, South Africa is described and figured. It differs from the only other described species in the genus, E. mirabile, by having a differently structured spermatheca and vulval area as well as a shorte ...
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The genus Xiphinema in South Africa. X. Species of the X. meridianum group (Nematoda: Dorylaimida) \ Phytophylactica : plantbeskermingswetenskappe en mikrobiologie = Phytophylactica : plant protection sciences and microbiology [Artikel]
Coomans, A. \ Heyns, J. \ 1985
X. barbercheckae n.sp., X. capense, n.sp. and X. bolandium n.sp. from vineyards in South Africa are described and illustrated. X. barbercheckae is distinguished from other members of the X. meridianum group by the presence of spines in the uterus. X. ...
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The Genus Xiphinema in Southern Africa. XI. Description of Xiphinema stockeri n. sp. from Botswana (Nematoda: Dorylaimida) \ S. Afri. J. Zool. [Artikel]
Kruger, J.C.D. \ Heyns, J. \ 1985
X. stockeri n.sp. (12 females, 14 males and 46 larvae) from sandy soil around Colophospermum mopane near Letlakane, Botswana, is described and illustrated. X. stockeri is characterized by an exceptionally long and conspicuous peg on the tail. It most ...
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The genus Xiphinema in South Africa. IX. Description of Xiphinema xenovariabile n.sp. from Transvaal (Nematoda: Dorylaimida) \ Phytophylactica : plantbeskermingswetenskappe en mikrobiologie = Phytophylactica : plant protection sciences and microbiology [Artikel]
Kruger, J.C.deW. \ Heyns, J. \ 1985
X. xenovariabile n.sp. from soil around roots of grass and maize from Transvaal, South Africa is described and figured. It is most closely related to X. variabile from which it can be distinguished by body posture and diameter, vulva position, odonto ...
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A study of Xiphinema americanum sensu Heyns, 1974 (Nematoda) \ Phytophylactica : plantbeskermingswetenskappe en mikrobiologie = Phytophylactica : plant protection sciences and microbiology [Artikel]
Loots, G.C. \ Heyns, J. \ 1985
A brief historial review of the taxonomic position of X. americanum Cobb, is given together with an indication of the existing confusion concerning the delimitation of the species concept and the position of the specimens collected from South Africa ...
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