Introduction: This research was conducted to determine the effect of several types of local microorganism solutions and manures on the growth and yield of peanut and their impact on the physical properties of ultisols. Materials and Methods: The researches was conducted in Simalingkar B, Medan using Factorial Randomized Block Design within three replications. The first factor was types of microbe sources of local microbial solutions, include un-treated waste (M0), pineapple (M1), orange (M2), and tamarillo (M3) wastes. The second factor was manure types, inluce un-treated manure (P0), chicken (P1), cow (P2), and goat (P3) manures. The parameters were: soil physical characteristics (bulk density, water content and total of pore space), plant height, stem diameter, number of pods, and dry seeds yield. Results: The types of local microorganism solutions only affect to plant height of peanut, but has insignificant effect on the physical properties of ultisols, and stem diameter, the number of filled pods.plant-1, and the dry seeds yield.ha-1 of peanut. The types of manure had significantly effected on plant height and number of filled pods.plant-1, but had insignificant effect on stem diameter, dry seeds yield.ha-1 and the physical properties of ultisols. The interaction of MOL sources and manure did not significantly affect the growth and yield of peanut as well as the physical properties of ultisols. Orange MOL and chicken manure could be increase the plant height of peanut by 18.61% and 6.75%, respectively, compared to un-treated. Goat manure showed the highest number of pods.plant-1 by 6.32% compared to un-treated.

The COVID-19 pandemic has caused various negative impacts on people, both those living in urban areas and farmers in rural areas. This study aims to determine the socio-economic impact of the COVID-19 pandemic on farmers and to find alternative approaches to recovering the socio-economic conditions of farmers in the District of Deli Serdang, North Sumatra Province. The research was conducted from June to November 2021 in the District of Deli Serdang. The data used in this research are primary and secondary data, which were analyzed by descriptive methods with qualitative and quantitative approaches to determine the pandemic's impact on social and economic conditions. Statistical tests were carried out to compare the socio-economic conditions of farmers before and during the pandemic with the t-test. Based on the study's findings, it was determined that the COVID-19 pandemic had negatively impacted farmers' socio-economic conditions, which are demonstrated by a decline in their frequency of social interactions, frequency of community visits, family income, and level of savings during the pandemic. Moreover, the recovery of the social-economic conditions of farmers during the COVID-19 pandemic has been achieved through farmer empowerment activities, market development, and institutional and capital sources aspects. Based on the research results, there are three recommendations. Restoration of the socio-economic conditions of farmers will be optimal if carried out collaboratively between the government, the private sector, and the farmers themselves. The government must optimize the empowerment of farmers through training, counseling, and innovation in farming technology. Private institutions are expected to participate in socialization and counseling about optimal farming development during the COVID-19 pandemic.

A study consisted of two growing seasons of lettuce was held to observe the residual effect of eco enzyme and chicken manure on the growth and yield of lettuce on the second growing season.  The research was held in Medan and was done using factorial randomized block design, with two treatments and three replications.  The first factor was the concentration of eco enzyme, with three levels of 0, 1 and 2 ml/L.  The second one was the dose of chicken manure, with three levels of 0, 15 and 30 tons/hectare.  The application of the eco enzyme and chicken manure was done only on the first growing season. The parameters were: number of leaves, root volume, fresh weight and the total yield of lettuce. The result showed that there was a residual effect of eco enzyme and chicken manure application on the growth and production of lettuce.  The concentration of eco enzyme had a very significant effect on the number of leaves at 14 DAP, but there was no significant effect on other parameters. The relationship between eco enzyme concentration and the number of leaves at 14 DAP was linear.  The dose of chicken manure had a very significant effect on all variables at each time of observation. The relationship between the dose of chicken manure and the number of leaves at 14, 21 and 35 DAP, the fresh and total yield was also linear. The relationship between the dose of chicken manure and the number of leaves at 28 DAP and the root volume was quadratic, with the optimum doses of chicken manure were: 27.05 and 22.5 tons/ha, respectively.  No interaction was observed between the concentration of eco enzyme and the dose of chicken manure on all variables at each time of observation.