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Pests

Alfalfa nematodes

Medicago sativa L.

The primary alfalfa pathogens are the stem nematode (Ditylenchus dipsaci) and the alfalfa cyst nematode (Heterodera medicaginis). They cause tissue deformation, growth retardation, and a decline in crop productivity.

In the reference 62 varieties crop Alfalfa, where this is mentioned in the description.

The stem nematode Ditylenchus dipsaci is a migratory endoparasite represented by a complex of specialized races. Alfalfa infestation is characterized by the twisting and thickening of stems, as well as the appearance of characteristic spongy areas in the tissues where cell separation occurs due to nematode feeding.

The alfalfa cyst nematode Heterodera medicaginis is a highly specialized parasite that causes heteroderoz. The harmfulness of this species depends directly on the population density of larvae in the soil, with the economic threshold ranging from 330 to 890 larvae per 100 cm³ of soil.

General information about the subject — on the page Nematodes.

Sources8

Varieties of Alfalfa mentioned in the description

Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.

ML 99

Active

Medicago sativa L. · Alfalfa

PASTURE GENETICS

GR
6 records

Cigale

Active

Medicago sativa L. · Alfalfa

Florimond Desprez Veuve et Fils, FR

AT CZ DE EE FR NL +1
14 records

Artemis

Active

Medicago sativa L. · Alfalfa

Barenbrug Holland BV (NL)

AT DE FR PL
11 records

Galaxie

Active

Medicago sativa L. · Alfalfa

Vincent Beguier

AT FR UA
11 records

Vertus

Protection expired

Medicago sativa L. · Alfalfa

Wirén, Gunnar /Lundin, Per

AT DK ES FR SE
13 records

Symphonie

Active

Medicago sativa L. · Alfalfa

S. A. FLORIMOND DESPREZ VEUVE ET FILS

AT DE FR PL SK
9 records

Occitane

Active

Medicago sativa L. · Alfalfa

Vincent Beguier

FR PT UA
10 records

Alpha

Active

Medicago sativa L. · Alfalfa

Barenbrug Holland BV (NL)

AT CZ DE FR PL
11 records

Sverre

Terminated

Medicago sativa L. · Alfalfa

Svalof Weibull AB

AT DK FR HR SE
10 records

Milky Max

Active

Medicago sativa L. · Alfalfa

Vincent Beguier

AT FR PL UA
10 records

Mezzo

Active

Medicago sativa L. · Alfalfa

Klaus K. Nielsen

CZ FR NL UA
10 records

Mercedes

Active

Medicago sativa L. · Alfalfa

Limagrain Genetics Grandes Cultures SA (FR)

AT FR NL
9 records

Vlasta

Active

Medicago sativa L. · Alfalfa

Agrogen spol. s.r.o.

AT CZ SK UA
8 records

Verdor

Active

Medicago sativa L. · Alfalfa

Barenbrug Holland BV (NL)

ES FR
11 records

Catera

Active

Medicago sativa L. · Alfalfa

SAATZUCHT STEINACH GmbH & Co KG (DE)

AT DE FR
8 records

Farandole

Active

Medicago sativa L. · Alfalfa

DLF Seeds A-S, DK

FR HR NL
7 records

Aquarius

Active

Medicago sativa L. · Alfalfa

NEW SOUTH WALES DEP.OF AGRIC.

IT
12 records

Salsa

Active

Medicago sativa L. · Alfalfa

Florimond Desprez Veuve et Fils, FR

FR PL
8 records

Sibemol

Active

Medicago sativa L. · Alfalfa

Florimond Desprez Veuve et Fils, FR

DE FR
9 records

Alexis

Active

Medicago sativa L. · Alfalfa

Barenbrug Holland BV (NL)

FR HR PL
6 records

RGT Dentelle

Active

Medicago sativa L. · Alfalfa

RAGT 2N S.A.S

DE FR
9 records

Pr54v09

Active

Medicago sativa L. · Alfalfa

Pioneer Hi-Bred International (US)

BG RO
6 records

Pr55v48

Active

Medicago sativa L. · Alfalfa

Tomasich Josef

BG RO UA
8 records