• Publications
  • Influence
Response of Heterodera glycines and Soybean Cultivar to Tillage and Row Spacing.
TLDR
As expected, the susceptible cultivar Sturdy consistently supported higher nematode densities than did the resistant cultivar Bell in 1993 to 1995 and Freeborn in 1996, while yield of resistant and susceptible cultivars was negatively related to the SCN initial population density. Expand
Soybean Cyst Nematode Population Development and Associated Soybean Yields of Resistant and Susceptible Cultivars in Minnesota.
TLDR
The results suggest growing resistant cultivars is an effective method to manage SCN in Minnesota while minimizing yield loss due to SCN. Expand
Viability of Heterodera glycines Exposed to Fungal Filtrates.
TLDR
The effects of fungal filtrates on second-stage juveniles and eggs of Heterodera glycines were determined and fungal species isolated from cysts extracted from a soybean field in Florida were tested on J2 and on eggs in vitro. Expand
A Technique for Determining Live Second-stage Juveniles of Heterodera glycines.
TLDR
A quick and reliable technique to distinguish live and immobile Heterodera glycines second-stage juveniles (J2) following their treatment with microbial culture filtrates is developed, useful for the examination of a large number of samples in which one wants to determine the effects of microbial cultural filtrate on nematodes, or in similar tests. Expand
Pathogenicity of Fungi to Eggs of Heterodera glycines.
TLDR
A negative correlation was observed between hatch and fungal parasitism of eggs and the nematode population densities were correlated negatively with the EPI, but not with the percentage of cysts colonized by the fungi. Expand
Effects of soil treatments on the survival of soil microorganisms.
In biological control studies of plant-parasitic nematodes in field soil improved methods are needed for reducing or eliminating specific soil inhabiting microorganisms. Microwave heating of soilExpand
Plant-parasitic Nematode Communities and Their Associations with Soil Factors in Organically Farmed Fields in Minnesota.
TLDR
The densities of most plant-parasitic nematodes did not correlate with measured soil factors (organic matter, pH, texture), however, the density of Pratylenchus correlated negatively with % sand, and Xiphinema was correlated positively with soil pH. Expand
Effect of Rotation Crops on Heterodera glycines Population Density in a Greenhouse Screening Study.
TLDR
Legumes resulted in lower egg population densities than monocots, Brassica species, and other dicots as a group, and Sunn hemp most consistently showed the lowest numbers of eggs and cysts. Expand
Fungal Parasitism of Heterodera glycines Eggs as Influenced by Egg Age and Pre-colonization of Cysts by Other Fungi.
TLDR
In most cases, pre-colonization of cysts by an unidentified, saprophytic fungal isolate (A-1-24) did not affect parasitism of eggs in the cysts subsequently treated with other fungi, while in soil tests, fungi generally parasitized more eggs in early developmental stages than eggs containing a juvenile. Expand
Development and Use of Field Application Vectors To Express Nonadaptive Foreign Genes in Competitive Environments
TLDR
The results demonstrate the effectiveness of field application vectors for increasing the concentration of nonadaptive genes in competitive environments. Expand
...
1
2
3
...