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Exploration and characterization of germplasm is an important stage in plant breeding activities. The present research was about exploration and morphological characterization of cacao (Theobroma cacao L.) in smallholder plantations in Koto Salak Sub-district, Dharmasraya Distric. It was carried out on July until October 2021. The objectives of this study were to characterize the morphology of cacao crops in Koto Salak Sub-district, Dharmasraya District and to determine the diversity level of cacao crops in that area. This research was by a survey method, with purposive sampling. The technique for data collection was by observe the morphology of the plants in each sample. The obtained data were analyzed descriptively, and for the similarity analysis, statistical calculation was by the NTSYS Ver 2.02 program. The research results obtained 4 variants of cacao plants which collected from 5 villages namely Padukuan, Pulau Mainan, Simalidu, Koto Salak, and Ampalu. Researcher obtained 30 samples of cacao plants which characterized by 16 characters, characters were wide variability and 14 other characters narrow variability with the level of diversity ranging from 39-77%.

West Sumatra is one producing coffee area in Indonesia a significant contribution to economy in Indonesian, because production coffee in West Sumatra unstable, it is necessary to expand the area. The propagation plants coffee is carried out in generative manner and needs be optimized with treating gibberellin hormone and water temperature to germination stage of coffee seeds.This research was conducted at the Seed Technology Laboratory of the Faculty of Agriculture, Andalas University from May to August 2021. The parameters observed were initial seed weight (g), seed weight after treatment (g), initial seed moisture content (%), seed moisture content after treatment (%). The results showed that the observation of initial seed weight and initial seed moisture content showed no significant effect. While the data had a significant effect on the observation of seed weight after treatment with the concentration of gibberellin hormone and seed moisture content after treatment in the treatment of water types, where the observation of seed weight after the highest treatment was in the treatment of gibberellin hormone concentration of 400 ppm with aquadest (G4J1) of 4.23 g and on the observation of the water content of the seeds after the highest treatment, namely the treatment with the concentration of the hormone gibberellin 300 ppm with aquadest (G3J1), which is 46.32%. Key words: Seed Weight, Moisture Content, Aquadest

Cacao (Theobroma cacao L.) is one of the plantation crop that has high economic value. Therefore it is important to carry out cacao cultivation as recommended. The objective of this study was to collect data on the cultivation characteristics on smallholder cacao plantations where located in Panti Sub-district, Pasaman District. This research was conducted from August until November 2021 in Panti Sub district, Pasaman District the present research was carried out using a survey method by purposive sampling, with the criteria that cacao crops have produced and the sample includes 10% of the smallholder cacao crops area in Panti Sub-district, pasaman District. The aspects that are included in the characteristics of cacao cultivation are in terms of land preparation, crop maintenance, the techniques for pest and disease control, as well as aspects of harvest and yield. The results showed that 80% of cacao farmers in Panti Sub-district had carried out cacao cultivation according to Puslitkoka standards, but its 20% have not carried out cacao cultivation according to the recommendations, including the aspects of land preparation, crops maintenance, and harvestthat were not appropriate the origin of planting material was unclear, unknown of the clone types, pest and disease attacks are still high and sanitation activitie. Are irregular.

Nagari Sungai Dareh Kecamatan Pulau Punjung Kabupaten Dharmasraya merupakan kawasan yang terletak di tepi Sungai Batang Hari. Sungai harus dilindungi dan dipelihara kelestariannya serta ditingkatkan fungsi dan manfaatnya guna kesehatan dan keberlanjutan ekosistem. Penanaman aren di bantaran sungai merupakan salah satu cara yang dapat dilakukan untuk menjaga kelestarian sungai. Selain bermanfaat untuk konservasi, aren juga memiliki nilai ekonomis yang tinggi. Kegiatan ini bertujuan untuk pemberdayaan masyarakat dengan cara: 1) Kegiatan konservasi di bantaran sungai Batang Hari, dan 2) Pengenalan tanaman aren serta meningkatkan pengetahuan dan keterampilan masyarakat dalam hal budidaya aren. Kegiatan ini dilaksanakan di Jorong Sungai Kilangan Nagari Sungai Dareh Kabupaten Dharmasraya dengan metode ceramah, diskusi dan demonstrasi penanaman aren di bantaran sungai. Jumlah mahasiswa yang dilibatkan adalah sebanyak lima orang. Masyarakat Nagari Sungai Dareh sangat antusias mendengarkan dan berdiskusi tentang budidaya aren dan pentingnya melakukan konservasi sungai. Kebanyakan peserta sangat tertarik dan akan langsung menanam aren pada lahan mereka masing-masing, namun masih ada beberapa yang masih akan mempelajari lebih lanjut. Sebagai bentuk harapan kami agar penanaman aren di bantaran sungai dapat sukses, maka kami memberikan bantuan ±200 bibit aren untuk masyarakat Nagari Sungai Dareh. Pemberdayaan masyarakat melalui budidaya aren telah mampu meningkatkan pengetahuan dan keterampilan masyarakat tentang pentingnya menjaga kelestarian sungai serta prospek dan tantangan budidaya tanaman aren

The tomato (Lycopersicum esculentum Mill.) has substantial scope for development due to its high economic value and large export potential. Ralstonia syzygii subsp. Indonesiensis (RSI) is the cause of bacterial wilt disease which attacks the vascular system in Solanaceae. It can cause large losses in yield and has caused global concern because of its widespread distribution and attack on many important crops. The aim of this research was to identifiy and characterize the ability of indigenous rhizobacterial isolates to control RSI and promote tomato growth. The PGPR traits studied were production of hydrogen cyanide, siderophores, biosurfactant, and ammonia, and protease activity. Bacterial identification was performed using 16S rRNA. Our findings revealed that the strains identified shared some similarities with Bacillus thuringiensis strain ATCC 10792 (IR.2.3.5), B. mycoides strain ATCC 6462 (IR.1.3.4), Bacillus thuringiensis strain IAM 12077 (IR.2.2. 1), Serratia ficaria strain DSM 4569 (IR.3.1.4), Enterobacter oryzendophyticus strain REICA_082 (IR.2.2.7), Cronobacter dublinensis subsp. lausannensis strain E515 (IR.2.2.5) and S. rubidaea strain DSM 4480 (IR.2.2.6). All of the isolates were tested for a variety of abilities related to growth promotion and biocontrol. Keywords: Ralstonia wilt; 16S rRNA identification; PGPR traits

umatera Barat merupakan provinsi penghasil kopi di Indonesia. Luas areal perkebunan kopi pada tahun 2016 sampai 2018 yakni 38.365 Ha; 33.276 Ha; dan 34.024 ha dengan produksi 22.721 ton; 17.553 ton; dan 18.026 ton. Buah kopi harus ditangani secara cepat menjadi bentuk yang lebih stabil agar aman untuk disimpan dalam jangka waktu tertentu. Kriteria mutu biji yang meliputi aspek fisik, cita rasa dan kebersihan serta aspek keseragaman dan konsistensi sangat ditentukan oleh perlakuan pada setiap tahapan proses produksinya. Penelitian ini dilaksanakan di Laboratorium Teknologi Benih Fakulltas Pertanian Universitas Andalas dari bulan Agustus 2020. Pelaksanaan penelitian ini digunakan bahan antara lain benih kopi robusta yang diambil di daerah solok, Alat yang digunakan dalam penelitian ini adalah meteran, botol-botol plastik, pisau, timbangan analitik, beaker glass, gunting, karung goni, ember, kamera, sarung tangan, masker dan alat tulis. Penelitian ini dilakukan secara deskriptif yakni mengambil beberapa sampel buah tanaman kopi robusta dan mengamati perubahan fisik dari buah yang diambil secara random disuatu areal perkebunan kopi robusta. Berdasarkan pengamatan yang dilakukan terkait dengan kondisi penyimpanan buah kopi selama sebulan didapatkan perubahannya yakni, waktu setelah dipanen didapatkan kondisi buah kopi merah terang, kulit segar mulus dan lunak, lalu disimpan selama 7 hari didapatkan kondisi merah gelap kulit sedikit keriput, disimpan selama 14 hari dengan kondisi merah gelap dan kulit keriput jelas, disimpan selama 21 hari didapat warna hitam kecoklatan, kulit kaku dan keras dan setelah disimpan selama 30 hari didapat warna kulit buah kopi hitam, kulit kaku dan keras. Kata Kunci: Respirasi, Kulit Buah, Warna Buah

This This study aims to determine the best dose of KCl Fertilizer and Liquid Organic Fertilizer of coconut coir on the growth of sweet corn (zea mays saccaharata Sturt) in peat soils. This study used a non factorial randomized block design with 6 treatments and 4 replications. The treatments used were 100 kg KCl fertilizer, POC Coconut Fiber 30 ml / liter, 100 kg KCl + POC coconut coir fertilizer, 75 kg KCl + POC coconut coir fertilizer, 50 kg KCl + POC coconut coir fertilizer, 25 kg KCl + POC fertilizer coconut fiber. The parameters observed were plant height, number of leaves / plants, leaf area index, stem diameter, emergence, male and female flowers, observational data were analyzed using analysis of variance (ANOVA) and continued with HSD tukey test at 5% confidence level. Based on the results of research that has been carried out, all treatments did not show a real effect on all parameters. Provision of coconut milk POC 30 ml / water gives the best results on the growth of sweet corn. Keywords: KCl fertilizer, liquid organic fertilizer, sweet corn

Rosela (Hibiscus sabdariffa L.) is a medicinal plant. Rosela has a chemical compound that can provide many benefits. Efficacy of rosella to prevent disease, treat disorders of various diseases with gossiptin anthocyanin content and gluciside hibiscin contained in it. This research was conducted at the Laboratory of College of Agricultural Sciences of Labuhan Batu University Foundation, North Sumatera Province. This research was started in March 2017. This research used Non-Factorial Randomized Block Design (RAK) with the harvesting period (P) P0: Control, P1: 1, Clock P2: 2 Hours, P3: 3 Hours P4: 4 Hours P5: 5 Hours P6: 6 Hours P: 7 Hours. The highest rate of germination was found in P7 treatment of 3.22 days. The highest normal germination percentage was found in P5 and P7 treatment of 66.67%. Than highest abnormal germination percentege was found in P3, P4 and P6 treatment of 33.33 %. Keywords : Rosela, Old Immersion

Nagari Sungai Talang is one of the villages in Payakumbuh District, Lima Puluh Kota Regency which seeks to cultivate ginger plants. Ginger (Zingiber officinale Rosc.) is a spice plant native to Indonesia. Ginger has long been cultivated and consumed by the community. The part of the ginger plant that is consumed is the rhizome. One of the problems in ginger cultivation in Indonesia is the low productivity and quality of ginger. Ginger seeds in the form of rhizomes must be processed and stored as well as possible so that their quality can be maintained longer by inhibiting the rate of seedling decline. The purpose of this service activity is to invite farmers, especially the Innovation farmer group in order to sort ginger seeds with government assistance (selection of good and healthy ginger seeds) so that the production of ginger plants can increase even better than the previous cultivation. The method of implementing this service is Community Education. Community education in this activity by carrying out socialization and counseling aimed at increasing knowledge and understanding of the community, especially ginger farmers about good and healthy ginger to be used as seeds for the implementation of further cultivation in the field. The results obtained from this empowerment activity are that the farmer group understands the type of rhizome that is chosen to be used as the next seed. The selection of the type of rhizome can be seen from the number of good buds, uniform shoot height, age of rhizome, and appearance of ginger rhizome. Abstrak. Nagari Sungai Talang merupakan salah satu nagari di Kecamatan Payakumbuh, Kabupaten Lima Puluh Kota yang mengupayakan budidaya tanaman jahe. Jahe (Zingiber officinale Rosc.) merupakan salah satu tanaman rempah asli Indonesia. Jahe sudah lama dibudidayakan dan dikonsumsi oleh masyarakat. Bagian tanaman jahe yang dikonsumsi adalah bagian rimpangnya. Salah satu permasalahan dalam budidaya jahe di Indonesia adalah masih rendahnya produktivitas dan mutu jahe. Bibit jahe berupa rimpang harus diproses dan disimpan sebaik mungkin agar mutunya dapat dipertahankan lebih lama dengan menghambat laju kemunduran bibit. Tujuan kegiatan pengabdian ini yaitu untuk mengajak para petani khususnya kelompok tani Inovasi dalam rangka penyortiran bibit jahe bantuan pemerintah (pemilihan bibit jahe yang baik dan sehat) sehingga hasil produksi dari tanaman jahe dapat meningkat lebih baik lagi dari budidaya sebelumnya. Metode pelaksanaan pengabdian ini adalah Pendidikan Masyarakat. Pendidikan masyarakat dalam kegiatan ini dengan melaksanakan sosialisasi dan penyuluhan yang bertujuan meningkatkan pengetahuan dan pemahaman masyarakat khususnya petani jahe tentang jahe yang bagus dan sehat yang baik untuk dijadikan sebagai bibit untuk pelaksanaan budidaya selanjutnya dilapangan. Hasil yang diperoleh dari kegiatan pemberdayaan ini adalah kelompok tani memahami jenis rimpang yang dipilih untuk dijadikan bakal benih selanjutnya. Pemilihan jenis rimpang dapat dilihat dari jumlah bakal mata tunas yang baik, tinggi tunas yang seragam, umur rimpang, serta penampilan rimpang jahe.

Curah hujan yang tinggi di Nagari Bukik Sileh telah menimbulkan dampak negatif seperti banjir, bencana ini terjadi juga karena kebiasaan masyarakatnya yang dominan masih suka membuang sampai di sungai. Lubang Resapan Biopori (LRB) memungkinkan sampah organik dapat dikelola langsung oleh petani di sumbernya dengan hasil berupa kompos. Kegiatan ini bertujuan untuk pemberdayaan masyarakat dengan cara: 1) memberikan peningkatan pemahaman dan pengetahuan kepada kelompok tani Banda Sampie tentang pengolahan limbah pertanian dan manfaat Lubang Resapan Biopori 2) peningkatan keterampilan petani untuk membuat Lubang Resapan Biopori 3) memberikan teknologi berupa alat pembuatan Lubang Resapan Biopori. Kegiatan pengabdian masyarakat ini dilaksanakan di Kelompok Tani Banda Sampie Nagari Bukik Sileh dengan metode ceramah, diskusi dan demonstrasi aplikasi penerapan lubang resapan biopori. Jumlah mahasiswa yang dilibatkan adalah sebanyak 2 orang. Masyarakat Nagari Bukik Sileh sangat antusias mendengarkan dan berdiskusi tentang Teknologi lubang resapan biopori. Anggota kelompok tani banda sampie telah paham mengenai manfaat teknologi LRB dan 95% petani akan segera mengaplikasikannya pada lahan mereka masing-masing. Hal ini sangat baik bagi 75% petani nagari bukik sileh yang memang belum memanfaatkan limbah pertanian dan sampah rumah tangga mereka. Kemudian, LRB juga diharapkan dapat menanggulangi banjir yang kadangkala terjadi di Nagari bukik sileh.

Oil palm plants are the belle of the community in the Dharmasraya Regency today. One of the causes of the low productivity of community plantations is caused by the production technology that is applied relatively simple, starting from seeding to harvesting. With the application of appropriate cultivation technology, it will be directed to increase palm oil production. The activity objectives are to 1) increase the understanding and knowledge of the Nagari Silago community about oil palm production technology, 2) improve the community's knowledge and skills in processing agricultural waste to be more useful 3) encourage the enthusiasm of farmers so that they can better utilize Nagari Silago's agricultural potential. This community service activity was carried out in Nagari Silago District IX Koto Dharmasraya Regency on 26-27 October 2019. This community service activity was carried out using the lecture, discussion method. The number of students involved numbered 150 people. Previously, the community service participants only followed the coconut cultivation technique, which was carried out by the farmers before, even though the cultivation technique was not correct. The Nagari Silago community is very enthusiastic about welcoming and discussing about the technology of oil palm cultivation. Many people ask questions, and good discussions are starting from the origin of seedlings and oil palm nursery techniques, land clearing, fertilizing, castration, pest control, and diseases of oil palm plants. Farmers can consider the concept of 5 T, which is the right way, the proper dosage, the right time, the right type and the right quality that is important in providing that which is not suitable enough for vegetative and generative growth of oil palm.

West Sumatra is one producing coffee area in Indonesia a significant contribution to economy in Indonesian, because production coffee in West Sumatra unstable, it is necessary to expand the area. The propagation plants coffee is carried out in generative manner and needs be optimized with treating gibberellin hormone and water temperature to germination stage of coffee seeds.The research conducted at the Seed Technology Laboratory Faculty Agiculture, Andalas University from Mei to Agust 2021. Measurement parameters were germination rate (days), normal germination (%), abnormal germination (%) and dead seeds (%). The results of observations of germination rate (days), normal germination (%) and abnormal germination (%) showed a significant effect. While the data had no significant effect on the observation of dead seeds (%) in the treatment of gibberellin hormone concentration and treatment of water types, which in the observation of normal sprouts was the highest, namely in the treatment of 400 ppm gibberellin hormone concentration with coconut water (G4J3) of 86.67% and on seed observation. The highest death rate was treatment (G1J2), which was 33.33%.

West Sumatra is one producing coffee region in Indonesia that contributes to the economy in Indonesia because unstable need expand. Optimizing generative propagation of coffee plants with gibberellin hormone treatment and different water temperatures on coffee seed germination stage. The research was conducted at the Seed Technology Laboratory Faculty Agriculture, Andalas University from July to September 2020. Research methods used randomized block design [RBD] with 2 treatments namely concentration hormone gibberellin and immersion water temperature differences. Measurement parameters are maximum growth potential [%], First Count Test [FCT] [%], and Index Value Test [IVT] [days]. All parameter observation results showed a significant effect on the treatment of gibberellin hormone concentration and water temperature treatment. G4S1 sample [the combination of 200 ppm gibberellin hormone concentration and room water temperature treatments] has resulted as the best treatment for all parameters. Respectively, 0.79 days for index value test, 76.67% for the first count test, and 85% for the maximum growth potential parameters.

The propagation plants coffee is carried out in generative manner and needs be optimized with treating gibberellin hormone and water temperature in germination stage of coffee seeds. This research aimed to know the effects of changes in the physical condition of coffee seeds with concentration of gibberellin hormone (GA3) and different water temperatures. This research conducted at the Seed Technology Laboratory Faculty Agiculture, Andalas University from July to September 2020. The method used was Randomized Complete Design with 3 replications. The parameters observed were seed weight early (g), seed weight after treatment (g), seed moisture content early (%), moisture content seed after treatment (%) and membrane leakage (μmhos). Results showed that 200 ppm of gibberellin hormone concentration can increase weight of seed after treatment with 4.28 g. The best seed moisture content was at 90°C water immersion temperature with 48.28%.

Madduppa HH, Agus SB, Farhan AR, Suhendra D, Subhan B. 2012. Fish biodiversity in coral reefs and lagoon at the Maratua Island, East Kalimantan. Biodiversitas 13: 145-150. Fishes are one of the most important biotic components in the aquatic environment. They are filling different habitats, including coral reef and lagoon. This study aims to (1) assess biodiversity in coral reef and lagoon in Maratua Island, East Kalimantan, and (2) compare the fish community indices (Shannon-Wiener diversity, Evenness, and Dominance) between the coral reef and lagoon. A total of 159 fish species of belonging to 30 families were observed during five visual census of the study period. The number of species on coral reefs is higher (121 species) than in the lagoons (47 species). Relative abundance (%) of each species also varied and did not form a specific pattern. However, a clear cluster between the coral reef and lagoon habitats from fish relative abundance based on multivariate analysis and dendogram Bray-Curtis Similarity was revealed. The Evennes index value (E) ranged from 0.814 to 0.874, the dominance index (C) ranged from 0.023 to 0.184, and the Shannon-Wiener diversity index (ln base, H') ranged from 1.890 to 4.133. Fish biodiversity in coral reefs was higher (H'= 3.290±0.301) than in the lagoon (H' = 2.495±0.578).

Mangosteen is one of the most famous tropical fruits. In addition, mangosteen is also used as medicine, including as an anti inflammatory, antibacterial. Mangosteen is apomyxic so that plants that come from seeds will be genetically similar to their mother. Apomixis is an asexual method of reproduction through seeds where seeds are formed without reducing chromosome numbers and fertilization. Polyembrioni is the event that there are more than one embryo in one seed. Seed structure is a component of a seed that has different functions with the aim of breeding plants. The structure of the plant seeds that must be known is the seed as a reproduction tool, the spread, and the survival of a plant. In addition, for seed plants, seeds are the beginning of new plant life outside the parent.Results showed that mangosteen seeds had polyembryonic properties which had more than one embryo scattered around the embryo axis. The structure of the mangosteen seeds consists of testa, endosperm and embryo axis and after the seeds are planted for 7 days there appears a red line (Micropyle) from the shaft of the embryo to exit the seeds which will become buds. Mangosteen seed germination begins with the appearance of red colored buds that come out randomly around the surface of the mangosteen seeds sourced from the embryo axis, then after a few days red plumules appear and are followed by the appearance of radicles.

Effect Storage In Criopreservasi On Type And Old South Crioprotektan Different Conditions Of Seeds Against Viability of Mangosteen Seeds (Garcinia mangostana L.). The aim of the study was to determine the type, duration of soaking and the different conditions of mangosteen seeds and their interaction with the viability of mangosteen seeds (Garcinia mangostana L.). This research was carried out at the Laboratory of Applied Sciences in Seed Technology of Labuhanbatu College of Agricultural Sciences (STIPER), starting March to July 2018, using factorial randomized block design with 3 treatment factors namely cryoprotectant type, cryoprotectant immersion and mangosteen fruit flesh. Parameters observed were normal sprouts (%), abnormal sprouts (%), dead seeds (%). The results showed that the highest application of the parameters was the use of non-fruit flesh with cryoprotectant PVS2 and 180 minutes soaking time. The results of the research were used to develop mangosteen seed storage for the needs of the community, especially mangosteen farmers in Indonesia. Keywords : crioprotektan, criopreservasi, mangosteen seeds

Madduppa HH, Agus SB, Farhan AR, Suhendra D, Subhan B. 2012. Fish biodiversity in coral reefs and lagoon at the Maratua Island, East Kalimantan. Biodiversitas 13: 145-150. Fishes are one of the most important biotic components in the aquatic environment. They are filling different habitats, including coral reef and lagoon. This study aims to (i) assess biodiversity in coral reef and lagoon in Maratua Island, East Kalimantan, and (ii) compare the fish community indices (Shannon-Wiener diversity, Evenness, and Dominance) between the coral reef and lagoon. A total of 159 fish species of belonging to 30 families were observed during five visual census of the study period. The number of species on coral reefs is higher (121 species) than in the lagoons (47 species). Relative abundance (%) of each species also varied and did not form a specific pattern. However, a clear cluster between the coral reef and lagoon habitats fromfish relative abundance based on multivariate analysis and dendogram Bray-Curtis Similarity was revealed. The Evenness index value (E) ranged from 0.814 to 0.874, the dominance index (C) ranged from 0.023 to 0.184, and the Shannon-Wiener diversity index (ln base, H') ranged from 1.890 to 4.133. Fish biodiversity in coral reefs was higher (H'= 3.290±0.301) than in the lagoon (H' = 2.495±0.578).

Effect Storage In Criopreservasi On Type And Old South Crioprotektan Different Conditions Of Seeds Against Growth of Mangosteen Seeds (Garcinia mangostana L). The aim of the study was to determine the type, duration of soaking and the different conditions of mangosteen seeds and their interaction with the growth of mangosteen seeds (Garcinia mangostana L). This research was carried out at the Laboratory of Applied Sciences in Seed Technology of Labuhanbatu College of Agricultural Sciences (STIPER), starting March to July 2018, using factorial randomized block design with 3 treatment factors namely cryoprotectant type, cryoprotectant immersion and mangosteen fruit flesh. Parameters observed were number of shoots (fruit), shoot height (cm), root length (cm), and sprout dry weight (g). The results showed that the highest application of the parameters was the use of non-fruit flesh with cryoprotectant PVS2 and 180 minutes soaking time. The results of the research were used to develop mangosteen seed storage for the needs of the community, especially mangosteen farmers in Indonesia.

The purpose of this study is to determine the best number of seeds cuttings, gibberellin concentration and immersion time for the germination of mangosteen seeds. This research conducted at Laboratory of Seed Technology Faculty Agriculture, University of Sumatera Utara, Medan from December to March 2016. Experimental design used a factorial randomized block design with three factors, seed cutting, gibberellin concentrations and immersion time. Parameters measured were membrane leakage (μmhos), normal seedling (%), abnormal seedling (%), died seeds (%), germination rate (days), vigor Index (%). The results show that intact mangosteen seeds or without cutting, application of gibberellin at a concentration of 75 ppm and 24 hours time immersion are the best treatments to mangosteen seed germination.