Legume Bacteria Research Articles

Methods of Counting the Number of Legume Bacteria in the Soil1

Methods of Counting the Number of Legume Bacteria in the Soil¹

Legume Bacteria Population of the Soil 1

Agronomy JournalVolume 18, Issue 10 p. 911-919 Article Legume Bacteria Population of the Soil 1 J. K. Wilson, Professor of Soil Technology.Search for more papers by this author J. K. Wilson, Professor of Soil Technology.Search for more papers by this author First published: 01 October 1926 https://doi.org/10.2134/agronj1926.00021962001800100007xCitations: 16 1 Contribution from the Department of Agronomy, Cornell University, Ithaca, N. Y. AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinked InRedditWechat Citing Literature Volume18, Issue10October 1926Pages 911-919 RelatedInformation

Viable Legume Bacteria in Sun‐Dried Soil1

Viable Legume Bacteria in Sun‐Dried Soil¹

Some Conditions Affecting the Growth and Activities of Azotobacter chroococcum

INTRODUCTION The problem of soil biology is concerned to a considerable extent with studies of the activities of the oligocarbophilous and of the oligonitrophilous bacteria. Representatives of both the groups appear to be very widely distributed, and the inference is that they are more or less active in all normal arable soils. Of the former group the Nitrosomonas, Nitrosococcus, and the Nitrobacter of Winogradsky (the nitrifying bacteria) are the most widely known, while of the latter group the Azotobacter and the Bacillus radicicola or legume bacteria (the nitrogen-fixing bacteria) are the most familiar examples. All of these and related forms have been the subjects of extended research, and consequently an immense and growing literature exists on this general subject. Although the physiological powers and the presence in ordinary soil of these organisms can be readily proven by suitable incubation experiments with soils or impure culture, attempts to isolate and grow these organisms, especially the Azotobacter and the nitrifiers, in synthetic media of entirely known composition lead to very great difficulties. Pure cultures are not readily isolated, and when obtained their growth on media of entirely known composition is so slow that inves-

Effect of Drying Upon Legume Bacteria

Effect of Drying Upon Legume Bacteria