Soil pH is an indicator of soil quality that is important to note because it  affects the balance of nutrients in the soil. This is important, especially to maintain the fertility of agricultural land. The purpose of this study was to analyze soil quality based on the soil pH of maize and chili plants. The research sample was taken on the agricultural land of Gemuhblanten Village, Gemuh District, Kendal Regency ins October 2022. Sampling was carried out at six points on each of the maize and chili field. The initial pH data obtained was then averaged. It was obtained that the average soil pH of maize plants was 7.75 which was in the "slightly alkaline" criteria. The average soil pH of chili plants is 7.08 which is a "neutral" criterion The soil pH value for maize plants is slightly higher than the good soil pH for maize plants. Meanwhile, the pH of the soil in chili plants meets a good soil pH value for chili plants.

Implementation The Independent Curriculum encourages teachers to plan learning that can direct participant educate For Study more broad and deep through environment surrounding areas . Teachers are required For Can develop device learning specifically teaching materials that can accommodate need Study participant educate . Based on results observations and interviews conducted , obtained data that science teachers in Tegal Regency still difficulty in compile teaching materials . This community service activity aims to provide structured training related to the development of teaching materials, integration of local wisdom, and the STEM approach to partners, namely the MGMP IPA Tegal Regency. The community service activity consistsof three stages, namely preparation, implementation, and evaluation. The results of the activity showed that the teachers were enthusiastic and provided positive feedback on the community service activities carried out. The teachers were helped by the training because it increased their knowledge related to local wisdom and the STEM approach, then gained direct experience in compiling teaching materials and LKPD.