Universitas Pembangunan Nasional Veteran Yogyakarta
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Biological Characteristics of Diaphorina citri Kuwayama (Homoptera: Psyllidae) on Healthy Siem Citrus and lnfected by CVPD
Full text linkThe impact of citrus vein phloem degeneration (CVPD) on
biological characteristics of Diaphorina citri on Siem citrus was studied in the laboratory. Cohorts of the psytlid consisted of 100 eggs were cultured in the laboratory on both healthy and CVPD infected Siem citrus,and 150 nymphs of fourth instar in the field cages. CVPD affected significantly reproduction rate, age, survivorship
and sex ratio of the psyllid. It significantly shortened the age of female (18-61 days on healthy citrus, 14-35 days on infected citrus), decreased fecundity (457.8 eggs/female on healthy citrus, 201.8 eggs/ female on infected citrus), decreased survivorship of second instar nymph (48%
on healthy citrus, 32% on infected citrus), increased the ratio of male/female (0.868 on healthy citrus, 1.355 on infected citrus), and decreased the intrinsic rate of increase (r = -0.009 on healthy citrus, r = -0.021 on
infected citrus)
PENGARUH CORPORATE SOCIAL RESPONSIBILITY DISCLOSURE TERHADAP PERTUMBUHAN PERUSAHAAN
No full textThis study is a case study on PT. Indorama Synthetics Tbk. The aim of this research is to know about Corporate Social Responsibility Disclosure, the fi rm growth at PT. Indorama Synthetics, Tbk and also to know how is the infl uence of Corporate Social Responsibility Disclosure to the fi rm growth. In this research, the author uses descriptive analytical method with case study approach where the data are collected through the interviewing techniques, data collection and practices directly into the fi eld, as well as literature studies. And for the data analysis used Principal Component Analysis for dependent variable and then analyzed the infl uence with independent variable used parametric statistical method. This research also used the data from fi nancial report yearly from PT. Indorama Synthetics, Tbk with Desember 2004 – Desember 2009 periode as a sample. Based on the results of research and the results of data processing done by the author, showed that there is an infl uence but not signifi cant between Corporate Social Responsibility Disclosure to the fi rm growth.
Keyword : Corporate Social Responsibility Disclosure, The Firm Growth
