Sakir et al, 2018. Utilization of Refugia in Increasing Rice Production Based on Local Wisdom. JLSO 7(1): The use of refugia as a habitat for natural enemies of rice pest organisms has not been widely used by farmers on an ongoing basis in preserving the environment.  Therefore, this research aimed to observe  the effect of utilizing refugia on rice production. Based on observations for 18 weeks in 3 hectares rice field, field with refugia harbored an abundance of natural enemies or predators including dome beetles (Micraspis sp.), Tomcat (Paederus littoralis), needle dragonflies (Zygoptera sp), praying grasshoppers (Stagmomantis carolina), spiders hunters (Oxyopes javanus), nets making spider (Tetragnatha maxillosa), and wasps (Polistes sp.). Insect pest infestations of white pest/leaf roller (Nymphula depunctalis), fake white pest/leaf folding (Cnaphlacorosis medinalis), white rice stem borer (Tryporyza innotata), and walang sangit (Leptocorisa acuta) was low. The rice field with plant refugia in 2018 produced 8.13 tons compared to 5.4 tons of rice grain/ha of the preceding year (2017) of yield without refugia. Plant refugia can be applied to increase swamp rice yield.

This study aims to examine the floating rice nursery techniques as local wisdom of agricultural systems on wetland swamps, and the characteristics of wetland swamps. The research method used is ethnography, which aims to describe in detail the themes or perspectives that originate from the phenomenon and the interaction of individuals or groups in culture. The results showed that the Ogan ethnic in Pemulutan had carried out a wetland swamp farming system for generations. This agricultural technique utilizes wild plants such as swamp grass (berondong) and freshwater algae (reamon) as a medium for floating rice nurseries. The use of natural resources around agricultural land is a form of local wisdom in preserving the environment. Wetland swamp agro-ecosystem with local wisdom of floating rice nurseries can maintain a sustainable ecosystem and environment. The agricultural land of the Ogan community is dominated by swollen or shallow patches of around 6.289 hectares or 59,1 per cent, middle swamps of 3.309 hectares or 31 per cent, the remaining 9,9 per cent or 1.058 hectares are deep swampland. The potential land for farming which shallow land and middle land.

This service aims to determine the use of oyster mushrooms for food needs as local wisdom for urban communities. The method used with an ethnographic approach is to describe in detail the oyster mushroom cultivation technique for the community in Kalidoni District, Palembang City. The process of cultivating oyster mushrooms from start to harvest takes about one month. Baglog from sawdust used can last for 7 months, then it must be replaced with new planting media. The time interval for the first harvest and the next harvest takes 2-3 days. Mushroom yields will be maximized if you regularly water three times in one day. Production of oyster mushrooms for one baglog media, can produce 0.5 kg to 1 kg of mushrooms. The mushroom harvesting system is carried out from the base of the stem because the remaining stems can rot. Harvesting is done every day or every few days depending on the distance from which the polybags are opened. The one baglog produces about 1 kg of mushrooms at a price of Rp.25,000 to Rp.30,000/kg.