The aim of this study was to determine the effect of Pandanus (Pandanus amaryllifolius 20 Roxb.) and Neem (Azadirachta indica) leaves powder on the repellency, mortality, and weight loss 21 of grains due to Sitophilus oryzae. The methodes of this study used a completely randomized design 22 (CRD) with 7 treatments and 4 replications. The results of this study indicate that the best treat- 23 ment in terms of causing repellency was the treatment of 10 grams of pandanus with a percentage 24 of 87.5%, while the best treatment in terms of causing pest mortality and was also able to reduce 25 the risk of rice weight loss due to Sitophilus oryzae was treatment 10 gram of neem with a mortality 26 percentage of 76.25% and weight loss of rice 3.14%. This research showed that neem leaf com- 27 pounds are better in terms of causing mortality, while Pandanus compounds are better in terms of 28 causing mortality of Sitophilus oryzae.

Plant-parasitic nematodes are costly burdens of crop production. Ubiquitous in nature, phytoparasitic nematodes are associated with nearly every important agricultural crop and represent a significant constraint on global food security. This study aimed to determine the effect of magnetic field exposure on plant-parasitic nematodes, namely Meloidogyne sp. This research was carried out in October 2019 in the laboratory of agriculture, University of Jember. The study used a completely randomized design using four treatments, namely exposure to the N polar magnetic field, S polar magnetic field, toroidal magnetic field (N to S), and reverse toroidal magnetic field (S to N) with a magnetic strength of 1,5 Mt and the number of nematodes was 50 J2 per treatment. The results showed that the magnetic field affects the nematode’s motion, which is increasingly greening the magnetic field within 60 seconds, 90 seconds, and 120 seconds. Nematodes experience the most rapid movement and move further away from the magnetic field within 60 seconds and 120 seconds in the treatment of reverse toroidal magnetic field exposure (S to N) equal to 13 mm and 24.5 mm. Hereby, this study provides new information about changes in nematode motion to exposure to magnetic fields.

Situbondo is one of the best mango producer city with a distinctive mango taste compared to other regions in East Java. Mango production in Situbondo in 2015 reached 222,471 quintals. One of the damage to post-harvest mango products is due to anthracnose disease. The purpose of this study was to determine the effect of hot water treatment in inhibiting anthracnose disease and maintaining the quality of mangoes. The study was conducted at the Plant Clinical Laboratory in January 2019 at the Faculty of Agriculture, University of Jember. The study design used was a completely randomized design with two factors, namely washing temperature (59 ± 1 ° C, 53 ± 1 °C, normal water temperature) and storage temperature (15.1 ± 1 ° C and 18.1 ± 1 ° C). Washing with a temperature of 53 ± 1 ° C can be used to clean fruit. Treatment with low temperature (15.1 ± 1 ° C and 18.1 ± 1 ° C) resulted in inhibiting changes in weight loss, fruit hardness, acid content (total titrated acid), and total dissolved solids while another treatment, 53 ± 1 ° C washing temperature with storage temperature 15.1 ± 1 ° C gives a good appearance that suppress the development of anthracnose, and inhibit fruit discoloration.

COVID-19 pandemic had several detrimental effects on the world’s economy and people around the world. Ginger farmers in Genteng Kulon village, Banyuwangi Regency, are one of the communities affected by COVID-19. Since COVID-19 came, the price of chemical fertilizers has remained expensive, and the price of ginger is very high, up to IDR 90.000 per kg, so ginger farmers need a new affordable alternative fertilizer. Fostering the manufacture of liquid organic fertilizer from banana stem waste is the right option to help ginger farmers meet their fertilizer needs and make it efficient in using available waste. The method used in this community development was through the Community Service Program consisting of various activities: training on the production of liquid organic fertilizer; packaging; labeling; and application to ginger plants. The success of this program was evidenced by the level of farmers’ understanding of the procedure being taught, which was assessed using a questionnaire. The results showed that the farmers’ understanding of the material being taught significantly increased as compared with that before they were educated. The percentages of average understanding of the training material for liquid organic fertilizer, packaging, labeling, and application were 75%, 80%, 80%, and 85% respectively. These numbers were very different from those representing the farmers’ knowledge before the training. These average percentages were 15.5%, 14%, 16.5%, and 11.5%. Therefore, this program was successful in providing new knowledge to farmers in the production of liquid organic fertilizer.