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Long bean production has decreased in Indonesia due to uncertain seasonal factors, such as long dry seasons and short rainy seasons. Long bean production has decreased due to inappropriate and optimal cultivation techniques. Several efforts can be made to overcome the problem of decreasing long bean productivity by fertilizing and applying growth regulators (ZPT). The aim of this research is to…
The growth and production of leeks is greatly influenced by the presence of plant pest organisms (OPT), one of which is purple spot disease caused by the fungus Alternaria porri. Control efforts by using a vegetable fungicide, namely citronella essential oil. The aim of this research is to determine the concentration of citronella essential oil as a vegetable fungicide that is effective in supp…