Influence of Nitrogen and Rhizobium Japonicum On the Activity of Heteroidera Glycines 1)

Influence of Nitrogen and Rhizobium Japonicum On the Activity of Heteroidera Glycines 1) INFLUENCE OF NITROGEN AND RHIZOBIUM JAPONICUM ON THE ACTIVITY OF HETEROIDERA GLYCINES 1) BY K. R. BARKER, P. S. LEHMAN and D. HUISINGH Department of Plant Pathology, North Carolina State University, Raleigh, North Carolina 27607, U.S.A. Greenhouse experiments were conducted to determine the effects of source and concentration of nitrogen (N) as well as inoculation of soybean with Rhizobium japonicum (R) on the activity of Heterodera glycines (SCN). The application of NaNO3 or NH4NO3 at 56 to 896 ppm N to soil or silica sand reduced nematode hatch, penetration and "cyst" development of SCN on soybean. Inhibitory effects were positively correlated with concentration of N. Concentrations of > 112 ppm N also reduced numbers of eggs per cyst. High concentrations of NaCl also resulted in slight inhibition of nematode penetration of host roots as compared to demineralized water. Since most N concentrations used (56-225 ppm) were below those necessary to give an osmotic inhibitory effect on nematode activity and since R also interfered with nematode development, it was concluded that N has a direct inhibitory effect on SCN. Simultaneous inoculations of nodulating (Nod) and nonnodulating (Nonnod) isogenic lines of soybean with R and SCN (minus N), as compared http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nematologica Brill

Influence of Nitrogen and Rhizobium Japonicum On the Activity of Heteroidera Glycines 1)

Nematologica, Volume 17 (3): 377 – Jan 1, 1971

Loading next page...
 
/lp/brill/influence-of-nitrogen-and-rhizobium-japonicum-on-the-activity-of-Gk49GsoHJS
Publisher
Brill
Copyright
© 1971 Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0028-2596
eISSN
1875-2926
D.O.I.
10.1163/187529271X00602
Publisher site
See Article on Publisher Site

Abstract

INFLUENCE OF NITROGEN AND RHIZOBIUM JAPONICUM ON THE ACTIVITY OF HETEROIDERA GLYCINES 1) BY K. R. BARKER, P. S. LEHMAN and D. HUISINGH Department of Plant Pathology, North Carolina State University, Raleigh, North Carolina 27607, U.S.A. Greenhouse experiments were conducted to determine the effects of source and concentration of nitrogen (N) as well as inoculation of soybean with Rhizobium japonicum (R) on the activity of Heterodera glycines (SCN). The application of NaNO3 or NH4NO3 at 56 to 896 ppm N to soil or silica sand reduced nematode hatch, penetration and "cyst" development of SCN on soybean. Inhibitory effects were positively correlated with concentration of N. Concentrations of > 112 ppm N also reduced numbers of eggs per cyst. High concentrations of NaCl also resulted in slight inhibition of nematode penetration of host roots as compared to demineralized water. Since most N concentrations used (56-225 ppm) were below those necessary to give an osmotic inhibitory effect on nematode activity and since R also interfered with nematode development, it was concluded that N has a direct inhibitory effect on SCN. Simultaneous inoculations of nodulating (Nod) and nonnodulating (Nonnod) isogenic lines of soybean with R and SCN (minus N), as compared

Journal

NematologicaBrill

Published: Jan 1, 1971

There are no references for this article.

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off