Intensity Of Pest And Pathogenic Attacks On Tobacco Seeds (Nicotiana tabaccum L.) In Marine Farming Service And The Fisheries Of The Langsa
Abstract
Tobacco is one of Indonesia's mainstay commodities which plays an important role in providing employment, a source of income for farmers, and a source of foreign exchange for the country. But lately productivity has experienced a decline caused by pests, pathogens, weeds, and environmental factors. The purpose of this study is to determine the types of pests and pathogens that attack the tobacco nursery phase, determine the percentage of pest and pathogen attacks and know how to control pests and pathogens in tobacco nurseries at the Department of Marine Agriculture and Fisheries of Langsa City. The method used in this study is a quantitative descriptive method by identifying and calculating the percentage and incidence of pest and pathogenic attacks that attack tobacco plants in the nursery of the Langsa City Fisheries and Maritime Agriculture Office. Based on the results of the study there are two types of pests and pathogens that attack tobacco plants in the nursery phase, namely leaf caterpillars (Spodoptera litura) and fungi (Phytophthora nicotianae). The highest intensity of pests and pathogens on the first day of observation was found in the first plot is 0.25% and 0, 56%, while the lowest on the fourth plot is 0.12 and 0.25%. However, on the 15th day after the application of nordox fungicide 70 ml / 14 liters of water and decis insecticide 2.5 gr / 15 the intensity of pests and pathogens decreased significantly. Thus the nordox fungicide and decis insecticide effectively control pests and pathogens that attack tobacco plants in the nursery phase
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