Pests
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.
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.
Medicago sativa L. · Alfalfa
Florimond Desprez Veuve et Fils, FR
Medicago sativa L. · Alfalfa
Dominique Noel
Medicago sativa L. · Alfalfa
AGROGEN, spol. s r.o. (CZ)
Medicago sativa L. · Alfalfa
Barenbrug Holland BV (NL)
Medicago sativa L. · Alfalfa
Florimond Desprez Veuve et Fils, FR
Medicago sativa L. · Alfalfa
NSW DEPARTMENT OF AGRICULTURE
Medicago sativa L. · Alfalfa
RAGT 2N S.A.S
Medicago sativa L. · Alfalfa
Florimond Desprez Veuve et Fils, FR
Medicago sativa L. · Alfalfa
Szarvasi Medicago (HU)
Medicago sativa L. · Alfalfa
Tombolan, I
Medicago sativa L. · Alfalfa
University of Georgia Research Foundation
Medicago sativa L. · Alfalfa
PLANT GENETICS
Medicago sativa L. · Alfalfa
CSIRO TROPICAL AGRICULTURE
Medicago sativa L. · Alfalfa
RAGT 2N S.A.S
Medicago sativa L. · Alfalfa
Tom Damin, Pasture Genetics Pty Ltd
Medicago sativa L. · Alfalfa
Forage Genetics International
Medicago sativa L. · Alfalfa
Amelioration Fourragere (FR)
Medicago sativa L. · Alfalfa
Medicago sativa L. · Alfalfa
Gie Grass
Medicago sativa L. · Alfalfa
ZOULIAMIS PAVLOS
Medicago sativa L. · Alfalfa
RAGT 2N S.A.S
Medicago sativa L. · Alfalfa
Pioneer Hi-Bred International (US)
Medicago sativa L. · Alfalfa
PIONEER HI-BRED INTERNATIONAL
Medicago sativa L. · Alfalfa
ABI Alfalfa Jim Moutray (US)