A stochastic model to estimate the multiplication of Heterodera rostochiensis at low densities ('maximum' multiplication) in field experiments was developed. This was done to analyse the results of four trials performed to investigate the effect of some systemic nematicides on this multiplication.Varying effects were found using aldicarb in three years while methomyl and oxamyl did not do better. A comparison between phenamiphos and phensulfothion yielded no significant differences.
Major insect pest of okra viz., jassid (Amrasca bigutulla biguttula), whitefly (Bemisia tabaci), and shoot and fruit borer (Earias vittella) damaged heavily during the kharif. The incidence of leafhopper, whitefly, shoot and fruit borer and natural enemies show correlation with weather parameters, minimum temperature showed significantly positive correlation (r = 0.611* and 0.807**) with jassid incidence during both the year of study. Maximum temperature showed non-significant negative correlation with jassid incidence during 2018 and significantly positive correlation during 2019 and correlation values in respective years were (r= -0.234 and 0.836**). Relative humidity and rainfall showed negative nonsignificant correlation with Whitefly incidence during both the years and correlation values in respective years were (r= -0.323, -0.092 and r= -0.562, -0.580). Minimum temperature showed positive significant correlation (r= 0.757** and 0.835**) during both the years. Maximum temperature showed nonsignificant negative correlation with per cent shoot damage during 2018 and significantly positive correlation during 2019 and correlation values in respective years were (r= -0.138 and 0.810**). Whereas, wind speed and sunshine showed positive non-significant correlation (r= 0.040 and 0.171) during first year and negative non-significant correlation (r= -0.373 and -0.064) during second year. minimum temperature and Clubiona sp. showed positive significant correlation (r= 0.438 and 0.493) during both the years.
This paper focuses on the awareness, use, satisfaction and problems regarding the available library resources at Dronacharya College of Engineering. In this study, the perspectives of teachers and students were compared side by side. To collect data from 400 targeted samples (350 students and 50 teachers) with the help of a structured questionnaire designed to cover all possible aspects required to fulfil the study objectives using the descriptive survey method. Based on the responses of 236 valid respondents (59.00%), it can be inferred that although the library offers a sizable collection of print and electronic resources, it is somewhat short on valued and updated materials. Besides, students put the internet facility into serious question. Overall, the teachers are neutrally satisfied with the collection and the students are satisfied enough. Updated collection, demand driven acquisition, expanded internet access, and awareness campaigns are just a few suggested actions that could improve user satisfaction and the effective use of library resources.
Keywords: Library resources, Resource utilization, Library users, User satisfaction, User awareness, Dronacharya College of Engineering (DCE)
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