Dampak Interferensi Gulma terhadap Kualitas dan Hasil Bawang Merah (Allium cepa L. Aggregatum Group)

Produktivitas bawang merah nasional masih di bawah potensi hasil yang diharapkan. Tidak optimalnya produktivitas bawang merah disebabkan interferensi gulma. Interferensi gulma dapat menjadi penyebab kehilangan hasil pada proses budidaya karena adanya kompetisi dan dampak dari alelopati. Penelitian ini bertujuan untuk melihat dampak interferensi gulma terhadap kualitas dan hasil bawang bawang merah. Penelitian menggunakan Rancangan Acak Kelompok Lengkap (RAKL) dengan tiga blok sebagai ulangan. Perlakuan yang diujikan adalah pengendalian gulma dan tanpa pengendalian. Hasil penelitian menunjukkan pengendalian gulma pada lahan pertanian menyebabkan perubahan kelimpahan dan keragaman komunitas gulma. Pengendalian gulma pada saat 3 dan 6 minggu setelah tanam (mst) menyebabkan perbedaan kelimpahan gulma dan perubahan  dominasi gulma yaitu dari rumputan menjadi daun lebar yang terjadi pada pengamatan 6 mst dan 9 mst. Kelimpahan dan dominansi gulma berdampak pada penurunan diameter umbi, bobot segar umbi dan bobot umbi bawang merah kering jemur (susut bobot). Pengendalian gulma pada lahan pertanian dapat mencegah kehilangan hasil bawang merah dengan rerata 3 ton/ha dibandingkan lahan tanpa pengendalian

Pekarangan Pinggir Kota untuk Menyangga Ekosistem Perkotaan: Pemanfaatan dan Keanekaragaman Tanaman

Home garden “pekarangan” plays an important role in conserving plant diversity in urban and suburban area. The suburban area including of pekarangan is a buffer area to preserve the quality of the urban environment. This study aimed to determine the utilization and plant diversity in suburban pekarangan of Yogyakarta. This research was carried out in Maguwoharjo using a survey method for 105 samples of home garden. Data were collected by observation using purposive sampling based on size of yard area. The results showed that the utilization of pekarangan in Maguwoharjo was dominated by ornamental plants, consist of sri rejeki (Aglaonema sp., Araceae), orchids (Dendrobium, Orchidaceae) and frangipani trees (Plumeria sp., Apocynaceae). Other functions of home garden were fruit plant and ground cover/grass. There was found 90 species of plants from 49 families, 27 species of trees, 60 species of shrubs, and three species of ground cover. The Shannon Wienner plant diversity index (H') was above 3 indicating the high category and the Evenness species evenness index (E) was close to 1 indicating a stable ecosystem condition. The H’ and E index based on size of yard area showed 3.74 and 0.88 (very small, <20 m2), 3.90 and 0,.89 (small, 20–50 m2), 3.44 and 0.88 (medium, 50–100 m2), 3.52 and 0.93 (big, 100–200 m2), 3.06 and 0.94 (very big, >200 m2). The results showed that suburban home garden “pekarangan” can support  quality of urban ecosystem and  its preservation.   Keywords: evenness index, Maguwoharjo Sleman, shannon wienner index, suburban pekarangan, Yogyakart

Effects of paclobutrazol concentrations and watering frequencies on the flowering ratio of cucumber plants (Cucumis sativus L.)

Generally, cucumber plants have more male flowers than female flowers. The fewer number of female flowers is one of the problems of cucumber production. Flowering regulation can be performed by applying growth regulators and water management. The study aims to determine the effects of paclobutrazol concentrations and watering frequencies on the flowering ratio of cucumber plants. The experiment was arranged in a factorial Randomized Completely Block Design at the Agricultural, Food, and Fishery Extension Center, Seyegan, Yogyakarta. The first factor was the paclobutrazol concentrations consisting of four levels (a control, 0.187 mL.L-1, 0.375 mL.L-1, and 0.562 mL.L-1). Meanwhile, the second factor was the watering frequency consisting of three levels (once a day, once every two days, and once every three days). The observed data were performed using the analysis of variance (ANOVA) and followed with Duncan’s Multiple Range Test at α= 5 %. The paclobutrazol concentrations resulted in a significant effect on all of the observed variables. Meanwhile, watering frequencies showed no significant effect on the male flowers, female flowers and ratio of male to female flowers in cucumber. There was an interaction effect of paclobutrazol concentration and watering frequency on the plant height and flowering age of cucumber plants. The treatment of paclobutrazol at a concentration of 0.375 mL.L-1, decreased of male flowers and increased of female flowers, reducing the ratio of male and female flowers of cucumber plants at various watering frequencies.-

An Information and Marketing System for Agrocomplex Sector Based on Reliable Digital Technology as a Supporting Capacity for Food Security in a Force Majeure Event

The pandemic situation experienced by the world are currently threatening food security in various regions including Indonesia. In these regions, the flow of traffic in the agricultural and fisheries sectors, from the means of production to the distribution of the harvest, is choked up due to social restrictions in various parts of the region. As a strategic step to reduce the impact on the agricultural sector, it is necessary to accelerate information to support the stability of production and also to distribute production results. Digital media in agriculture are needed to provide education with a variety of contents, such as technical production, marketing, and agricultural finance information. The Faculty of Agriculture of Universitas Gadjah Mada (UGM) has supported digital information dissemination through the Desa Apps application. Desa Apps aims to be an application platform that provides agricultural extension and develops digital farmer communities. The information that has been carried out by Desa Apps so far includes agrocomplex sector (agriculture, animal husbandry and fisheries) problems related to cultivation methods and obstacles faced in the land such as attack by plant pest and disease. As a digital media, the Desa Apps has educated farmer and aquaculturists. Optimization needs to be done to improve the performance of Desa Apps as a digital media, one of which is the marketing system that this application actually has. This study evaluates whether farmers and aquaculturists under the auspices of the Faculty of Agriculture are interested in being able to get education and at the same time be able to market their product directly to consumers with one application, the Desa Apps. The findings of the study showed that the pandemic period greatly affected the incomes of the assisted target community, and they required media that can help market their product. The decline in turnover due to pandemic conditions reached 70% with an average decrease of 39.2%. The method of selling products has changed from conventional to online sales by 20% of the total respondents. Changes in sales methods occurred due to distribution limitations due to regional and activity restrictions during the pandemic. Therefore, it is necessary to optimize the Desa Apps application as a digital media to support food security

日本におけるグリホサート抵抗性ネズミムギの総合的雑草管理

博士(農学)岐阜大学(Gifu University

Substituting Sargassum sp. Compost for Inorganic Fertilizer Improves the Growth and Yield of Shallot (Allium cepa L. Aggregatum Group)

Fertilizers derived from natural materials, such as Sargassum sp. (seaweed), are a promising technique to overcome the negative impact of overuse of inorganic fertilizers. Groundwater contamination, soil degradation, and changes in the soil microorganism community are problems related to overdosing on inorganic fertilizer during crop production. The use of Sargassum compost (SC) as a substitute inorganic fertilizer was tested by evaluating the growth and yield of shallot grown on sandy soil. The research was arranged in a randomized complete block design consisting of four treatments and three blocks of replications. The treatments involved substituting SC for inorganic fertilizer, which were 100 inorganic, 25 SC + 75 inorganic, 50 SC + 50 inorganic, and 75 SC + 25 inorganic, respectively. The compositions of nitrogen (N), phosphorus (P), potassium (K), sodium (Na), sulfur (S), auxin, gibberellin, cytokinin, and kinetin in SC, as well as the growth and yield of shallot, were analyzed by analysis of variance followed by the least significant difference test. The results showed that the SC contained high organic matter (45.78), nitrogen (4.1), phosphate (0.5), potassium (0.8), sodium (7.2), sulfur (0.2), and plant growth hormones, such as auxin (8.14 mg.g−1), gibberellin (15.97 mg.g−1), cytokinin (7.70 mg.g−1), and kinetin (2.78 mg.g−1). Interestingly, all substitution levels of the SC for inorganic fertilizer improved nutrient absorption in the leaves, roots, and bulbs. Moreover, the growth and yield of shallot were not significantly different among the treatments. Therefore, to provide sufficient nutrients and growth hormones, SC could be substituted for up to 75 of organic fertilizers for shallot plants. © Universiti Putra Malaysia Press

Proceedings of the 3rd International Conference on Community Engagement and Education for Sustainable Development

This proceeding contains articles on the various ideas of the academic community presented at The 3rd International Conference on Community Engagement and Education for Sustainable Development (ICCEESD 2022) organized by the Universitas Gadjah Mada, Indonesia on 7th-8th December 2022.  ICCEESD is a biannual forum for sharing, benchmarking, and discussing HEI’s activities in developing Education for Sustainable Development towards community engagement. Education for Sustainability as a teaching strategy for resolving community challenges through formal, informal, or non-formal education is expected to benefit from various community service best practices by academics, researchers, and students. The 3rd ICCEESD has “Strengthening Education for Sustainability Towards Better Community Engagement” as its theme this year. It is expected that the 3rd ICCEESD will provide a forum for the presenters and participants to exchange best practices, policies, and conceptual implementation of Education for Sustainability towards better community engagement and explore ideas to address community needs.  Conference Title: 3rd International Conference on Community Engagement and Education for Sustainable DevelopmentConference Theme: Strengthening Education for Sustainability Towards Better Community EngagementConference Acronyms: ICCEESD 2022Conference Date: 7th-8th December 2022Conference Location: Grand Rohan Jogja Yogyakarta, IndonesiaConference Organizer: Universitas Gadjah Mada, Indonesi