Purpose -This paper seeks to understand how users know when to stop searching for more information when the information space is so saturated that there is no certainty that the relevant information has been identified. Design/methodology/approach -Faculty, undergraduate and graduate students participated in focus group interviews to investigate what leads them to satisfice their information needs. Findings -Academic library users describe both qualitative and quantitative criteria, which lead them to make rational choices determining when "enough" information satisfices their need. The situational context of both the participants' specific information need and their role in academic society affects every stage of their search -from the selection of the first resource, to ongoing search strategies, to decisions on how much information is enough. Originality/value -These findings broaden the scope of earlier user research, which tends to focus on the more static views of habitual information-seeking and -searching behavior, by applying theoretical frameworks for a richer understanding of the users' experiences. IntroductionThe current information environment is rich, characterized by a proliferation of information sources and providers, a multiplicity of methods for accessing information, and a redundancy of content from multiple sources. In this "overloaded" information environment, many information users tend to experience a sense of information inadequacy and anxiety. How do individuals navigate this complex landscape of information? Furthermore, how do individuals assess the information they find as being enough to satisfy their specific need? In this complex information environment, understanding how individuals choose to satisfy their information needs takes on new urgency. Insight into information seeking can be gained by understanding how users seek information sources and how they choose content to meet their needs. Yet the library and information science literature has neglected to study how individuals decide what and how much information is enough to meet their needs or goals.Research on information-seeking and -searching behavior has paid ample attention to sources of information sources used. The process of seeking and searching for information also has received considerable attention from researchers, resulting in

This study addressed certain aspects of citation behavior: How many of the sources cited has the author really consulted? How many did the author consult specifically for the preparation of the citing paper? How many of the sources cited does the author consider essential to the development of his own theme? Nineteen members of the faculty from the Department of Business Administration, College of Commerce, University of Illinois, each of whom had published at least one periodical article in the preceding two years, were subjects of the study. Each was given a self‐administered questionnaire, along with the bibliography from one of his articles, and each participated in a follow up interview. Ninety‐six percent of the sources cited had been consulted by the authors, which indicates little evidence of secondhand citation. However, just 63% were consulted specifically in the preparation of the article; and only less than a third were judged essential raw material by those who cited them. If an item is of critical importance, it is likely to be owned by the author. Also, it is likely to have been consulted specifically in the preparation of the article, but criticality is no guarantee that it has been used heavily by the author.

Diazotrophic rhizobacteria, trigger and enhance plant growth as well as yield through various mechanisms, so their use can reduce the application frequency of chemical fertilizers. Indole-3-acetic acid (IAA), a most common natural auxin influences several physiological processes of the plant's health. The present study is aimed to optimize the conditions for IAA production, along with assay for plant growth promoting traits of Bacillus subtilis DR2 (KP455653), which is a diazotrophic Gram positive, rod bacterium, isolated from rhizosphere of road side weed, Eragrostis cynosuroides from Danapur, Patna, Bihar, India. The screening for IAA production was done in JNFbˉ broth with tryptophan (1 g.l-1) and without tryptophan at pH 5.8, 30±2 °C temperature and 48 h incubation. 137.81 µg.ml-1 and 100.26 µg.ml-1 IAA was produced in Trp + and Trpmedia, respectively. Under various optimized conditions, maximum IAA was produced at 96 h incubation (137.81 µg.ml-1), 35 °C temperature (141.92 µg.ml-1), pH 7 (158.79 µg.ml-1), mannitol as carbon (160.85 µg.ml-1) and ammonium sulfate as nitrogen (162.93 µg.ml-1) sources with tryptophan at final concentration of 1.2 µg.ml-1 (168.09 µg.ml-1), which enhanced the production by 1.2 fold. The findings suggest that B. subtilis DR2 is a potent organism to be used as biofertilizer. 

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