Rice is a staple food source for most of the population of Indonesia and Asia. However, rice production has decreased over time due to the conversion of agriculture into industrial or residential areas. One strategy to increase production is to use high-yielding varieties and improve the cultivation system. Liquid smoke is one solution to neutralize acidity and maintain soil quality. This study aimed to test the effect of liquid smoke concentration on the growth and production of several rice varieties. This research was conducted in Plangwot village, Laren sub-district, Lamongan regency, in March - June 2021. The data analysis method used factorial randomized block design (RAK). The first factor is the variety of rice and the second factor is the concentration of liquid smoke. The results showed that each variety gave the best results at different concentrations of liquid smoke. The best treatment was found in the Inari 42 variety with a concentration of 2% liquid smoke, the Inari 32 variety with a 4% concentration, and the Ciherang varieties with a concentration of 2% and 4%. There is a tendency that increasing the concentration of liquid smoke to 4% results in a decrease in the growth and production of rice plants.
The integrated agricultural system is one form of a sustainable agricultural system. This system is a combination of agriculture, animal husbandry, fisheries, forestry and other sciences which are still related to agriculture in a land. By combining these several fields, it is expected to be able to increase land productivity, agricultural development programs and environmental conversion as well as efforts to improve the welfare of rural farmers. In the context of utilizing livestock waste as agricultural fertilizer, and agricultural waste as animal feed. This activity will lead to mutual benefits for each other, on the one hand the livestock is able to produce fertilizer needs and agriculture provides animal feed. This is able to add additional value to business actors so as to reduce the number of losses for each other. This activity begins with socialization to the community, then field practice and mentoring.
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