This activity is expected to be a solution to prevent the spread of Corona Virus Disease (Covid-19), which is becoming a global pandemic. This effort is expected to provide additional knowledge to the community about how to make, function, and component, the practice of making and using hand sanitizers made from natural non-alcoholic, and non-toxic ingredients from local plants that are easy to obtain. This activity was carried out in September 2022. Counseling begins with the presentation of material through interactive presentations and discussions with the target subject. Then the counseling continued with the practice of making and using hand sanitizers made from local plants: lime, mint leaves, and aloe vera gel. The activity's success can be said to be successful because it is seen from the participation of the target audience, namely 75% of the targeted minimum of 60%, and the implementation of all community service procedures thoroughly and adequately by the implementing committee of community service activities.
Mustard consumption increases due to population growth, therefore it is necessary to increase its yield. One of the cultivation techniques to increase the growth and yield of green mustard can be done by the right plant spacing. This study aims to examine several plant spacings in two planting periods on the growth and yield of green mustard. The research was carried out from April to June 2020, at the Experimental Field of Agriculture Faculty Papua University, Manokwari, West Papua. This study was laid in a Randomized Block Design (RAK), with 3 spacing treatments, namely 25 cm x 15 cm, 25 cm x 20 cm and 25 cm x 30 cm. Each treatment was repeated 5 times. The data was analyzed using analysis of variance at the 95% confidence level, and if it had a significant effect, it was continued with the Least Significant Difference Test (BNT) at the 95% level. To see the comparison of mustard yield between the first and second studies, tabulated analysis was used. The results of the first and second studies showed that the three treatments tested had a significant and very significant effect on the character of plant weight per plant, per plot, and yield per hectare. The 25 cm x 15 cm plant spacing resulted in the highest yield per plot or per hectare. Plant spacing of 25 cm x 15 cm was 12 tons/ha produced the highet yield. On the other hand, a spacing of 25 cm x 30 cm produced the highest yield per plant. The growth and yield components decreased in the second study, except at a spacing of 25 cm x 15 cm which capable of producing 10 tons/ha.
Salak or Salacca fruit is a seasonal fruit; in some cases, this fruit easy rotten due to a lack of handling during the harvesting process or wet or humid storage. This condition will promote much waste because the fruit cannot be eaten. To minimize the waste, the seed of salak fruit can be converted to biochar. This study aimed to determine the chemical properties of biochar derived from the seeds of salacca (Salacca zalacca). The biochar is produced by burning the seeds using a furnace with a temperature of 350°C and 450°C, then ground and sieved with a size of 355 micrometers carried out at the Research Center for Limnology and Water Resources. Chemical property analysis using X-Ray Fluorescence Spectrometer (XRF) at the Lampung Advanced Characterization Laboratory- BRIN. The results show that most composition is Potassium (K). Potassium (67-70%) is the most abundant element in Salacca seed biochar, followed by chlorine. Biochar burned at 350 °C has a potassium content of 70.25%, while biochar burned at 450 °C has a potassium content of 67.86%. Biochar burned at 350 °C has a chlorine content of 25.35%, while biochar burned at 450 °C has a chlorine content of 24.66%. The percentage of potassium and chlorine decreases as the temperature rises. Furthermore, the phosphorus (P) and calcium (Ca) content of biochar appear at biochar burned at 450 °C.
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