These results show that virus and fungus are potential biological control agents for S. In 2001, the prevalence of fungal infection was negatively correlated with that of viral infection although prevalences of these two agents were positively correlated in both 19. Significant correlations between the environmental factors and the percentage of larvae infected by virus or by fungus, were only observed during 2001. Furthermore, the percentage of larvae that died due to virus contamination was generally higher than the percentage of larvae infected by fungus. The percentages of dead larvae infected by virus or fungus were significantly higher than the other causes of mortality, regardless of the year. Three different factors causing larval mortality were identified: one fungal pathogen, Furia virescens (Thaxter) Humber (Zygomycetes: Entomophthoraceae), two nucleopolyhedroviruses and one larval parasitoid, Meteorus communis (Cresson) (Hymenoptera: Braconidae). littoralis usually appeared in pastures after the third week of August, with higher abundances in September and the beginning of October. Mortality among larval developmental stages of Spodoptera littoralis (Boisduval) (Lepidoptera: Noctuidae), was determined by weekly sampling on weeds in a pasture on São Miguel Island (Azores, Portugal), from August to December, over a 3-year period (1999–2001). The grammar problems that found are fragment sentence, the errors of subject-verb agreement, and the errors in using coordinating conjunction. However, the essays are dominated by only one type of sentences, simple sentence. Generally, the essays had covered four types of the sentences simple sentence, compound sentence, complex sentence, and compound-complex sentence. Most of the paragraphs don't have concluding sentence. The developing paragraph of each essay is also poor. Only one essay has a complete organization. Based on finding and discussion of the research, the researcher concludes that the organization of the essays that developed by the research subjects is poor. The purposes of the study are to describe the organization of the essay developed by the students of Widyagama University and to know the grammar problems found in the sentences of the essay developed by the students of Widyagama University. There is an assumption that the writing ability of the forth semester students have been improved because the students have learned about how to develop paragraph in writing I, writing II, and writing III subject, so they are expected able to develop an essay.
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