Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
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Produksi Kacang Tunggak (Vigna unguiculata [L.] Walp) dengan Input Pupuk Rendah
Get PDFKacang tunggak memiliki prospek sebagai pengganti kedelai, sebagai bahan baku tempe. Perlu dikaji pemupukan dosis rendah pada produksi kacang tunggak. Penelitian ini bertujuan untuk mengetahui pengaruh aplikasi pupuk kandang dan Nitrogen terhadap pertumbuhan dan produksi tanaman kacang tunggak. Penelitian dilakukan di Kebun Percobaan Cikabayan, Institut Pertanian Bogor, pada bulan Novemeber 2018-Maret 2019, dengan menggunakan rancangan split plot. Petak utama aplikasi pupuk kandang kambing terdiri dari tiga taraf yaitu 0, 2.5, dan 5 ton ha-1. Anak petak terdiri atas empat taraf yaitu 0, 15, 30, dan 45 kg pupuk N ha-1. Hasil penelitian menunjukkan pemberian pupuk kandang meningkatkan bobot segar daun, jumlah tandan bunga, pada 5 minggu setelah tanam (MST). Pemberian nitrogen meningkatkan bobot segar daun, indeks luas daun, bobot segar akar dan jumlah bunga pada 5 MST. Kombinasi pemberian pupuk organik dengan dosis 2.5 ton ha-1 dan pupuk nitrogen 45 kg ha-1 memberikan pertumbuhan dan produksi yang cenderung lebih baik daripada tanpa pemupukan. Dengan demikian kacang tunggak dapat diproduksi dengan input pupuk kandang dan N yang rendah.
Kata kunci: bobot segar daun, indeks luas daun, tandan bungaCowpea is prospective as a substitute for soybeans, as raw material for tempeh. In this study, low inputs of cowpea production is proposed. This study aimed to determine the effect of manure and nitrogen fertilizer on the growth and production of cowpea. The study was conducted at the Cikabayan Experimental Station, IPB, Bogor, Indonesia, from November 2018 to March 2019, using a split-plot design. As the main plot was goat manure rates consisted of 0, 2.5, and 5 tons ha-1. The subplots consisted of four rates of nitrogen, namely 0, 15, 30, and 45 kg N ha-1. The results showed that the application of manure increased the fresh weight of the leaf, the number of flower bunches, and the number of flowers. The application of N fertilizer increased leaf fresh weight, leaf area index, dry root weight, and shoot/root ratio at five weeks after planting. The combination of organic fertilizer with a dose of 2.5 tons ha-1 combined with 45 kg ha-1 nitrogen fertilizer tends to give better productivity than without fertilizer. Thus, cowpea can be produced using low input of manure and N.
Keywords: leaf area index, leaf weight, flower bunche
Kelimpahan Vegetasi dan Simpanan Biji Gulma pada Pertanaman Jagung Berbeda Sejarah Pola Tanam di Lahan Kering
Get PDFWeed management is an important aspect in the dry land; however, weed resides in dry land like East Nusa Tenggara is rarely reported. The study aimed to evaluate weed species and its seed bank on maize fields from the different history of cropping patterns in order to develop effective weed control. The research was conducted in April-June 2019 at farmer fields at Kupang District, East Nusa Tenggara, Indonesia. Weeds were evaluated from four maize fields experienced a different history of cropping pattern (L1, L2, L3, and L4), and its seed bank from the depth of 0-10, 11-20, 21-30, and 31-40 cm were evaluated using seedling emergence method. The evaluation revealed 13 species at which 4 species exclusively were found in vegetation analysis, 2 species in the seed bank and 7 species in both vegetation and seed bank analysis. Dominant weed at podzolic L2 and L3 that experienced fallow for two months was Chloris barbata, while without fallow of podzolic L1 and grumusol L4 were Digitaria adscendens and Mazus japonicus, respectively. Cropping history and soil depths affected weed density, but depths of 0-20 cm had the highest density irrespective preceding the cropping pattern. Research implies both vegetation and seed bank analysis should be addressed and integrated in weed management.
Keywords: dry land, fallow, weed management, East Nusa Tenggara, vegetation analysi
Analisis Stabilitas Parametrik Hasil Cabai Rawit (Capsicum fructescens L.) pada Empat Lokasi Dataran Rendah
Get PDFVarietas cabai yang stabil dan berdaya hasil tinggi diperlukan untuk peningkatan produksi cabai nasional. Penelitian ini bertujuan untuk mengevaluasi stabilitas hasil 16 genotipe cabai rawit (Capsicum fructescens L.) dengan menggunakan analisis stabilitas parametrik (Francis-Kannenberg, Wricke, Finlay-Wilkinson, AMMI dan GGE). Penelitian ini dilaksanakan pada bulan Agustus 2018 sampai September 2019 pada empat lokasi, yaitu Kolaka, Palembang, Aceh dan Bogor. Penelitian ini menggunakan rancangan kelompok lengkap teracak dengan tiga ulangan. Genotipe cabai rawit yang dievaluasi adalah F5285290-237-6-1, F6285290-6-10-1-1, F5285290-290-2-1, F5285290-290-9-1, F5285290-290-9-3, F5321290-40-2-1, F5285290-123-6-15, F6321290-252-10-8-4, F5285290-38-6-3, F6321290-252-10-8-23, F6321290-252-10-8-75, Bonita IPB, Inul (varietas lokal), Cakra putih (varietas komersial), Taruna (varietas komersial), dan Tobasco. Interaksi genotipe x lingkungan berpengaruh nyata terhadap hasil. genotipe F6321290-252-10-8-4 diidentifikasi sebagai genotipe stabil berdasarkan beberapa metode stabilitas parametrik, namun genotipe tersebut tidak memiliki rata-rata hasil tertinggi. Sedangkan analisis GGE mengidentifikasi Bonita IPB sebagai genotipe yang stabil dengan daya hasil tertinggi.
Kata kunci: AMMI, analisis stabilitas, cabai rawit, varietas
Stable and high yielding chili varieties are needed to increase national chili production. The objective of this study was to identify the stability of sixteen chili (Capsicum fructescens L.) genotypes using parametric stability analyses (Francis-Kannenberg, Wricke, Finlay-Wilkinson, AMMI, and GGE). The study was conducted from August 2018 to September 2019 in Kolaka, Palembang, Aceh, and Bogor. The experiment used a randomized complete block design with three replications. The chili genotypes evaluated were F5285290-237-6-1, F6285290-6-10-1-1, F5285290-290-2-1, F5285290-290-9-1, F5285290-290-9-3, F5321290-40-2-1, F5285290-123-6-15, F6321290-252-10-8-4, F5285290-38-6-3, F6321290-252-10-8-23, F6321290-252-10-8-75, Bonita IPB, Inul (loca1 variety), Cakra Putih (commercia1 variety), Taruna (commercia1 variety), and Tobasco. The genotype x environment interaction effect was significant on yield. Genotype F6321290-252-10-8-4 was identified as stable based on several parametric stability methods, but this genotype was not the highest yielding. Meanwhile, the GGE analysis revealed Bonita IPB as a stable genotype with the highest yield.
Keywords: AMMI, chili, stability analysis, variet
Respon Genotipe Talas Colocasia esculenta var esculenta dan var antiquorum pada Interval Pemberian Air Berbeda
Get PDFTalas dikenal sebagai tanaman yang adaptif terhadap tanah dengan kelembaban tinggi. Dalam rangka mitigasi dampak perubahan iklim, respon genotipe tanaman talas terhadap variasi ketersediaan air perlu diketahui. Penelitian bertujuan mengevaluasi pengaruh frekuensi pemberian air pada pertumbuhan dan hasil tanaman talas tipe eddoe dan dasheen. Penelitian dilaksanakan di rumah kaca Kebun Percobaan Cikabayan IPB pada bulan Januari sampai April 2020. Sepuluh genotipe talas dievaluasi yang terdiri atas dua tipe dasheen (Talas Sutra dan Talas Bentul) dan delapan tipe eddoe (S6, S20, S24, S26, S28, S34, S35, dan S36). Tanaman umur delapan minggu dalam polibag diberi air dengan frekuensi berbeda yakni 1, 3, 7, dan 15 hari sekali hingga jenuh air. Hasil penelitian menunjukkan pertumbuhan semua tipe talas lebih vigor pada interval pemberian air 1 dan 3 hari sekali seperti ditunjukkan oleh peubah tinggi, jumlah daun, jumlah anakan, dan diameter petiol. Bobot basah umbi semua tipe talas mencapai 2-3 kali lipat pada perlakuan interval pemberian air 1 dan 3 hari dibandingkan dengan interval 7 dan 15 hari sekali; maka talas termasuk sensitif terhadap rendahnya kelembaban tanah.
Kata kunci: cekaman kekeringan, perubahan iklim, satoimo, talas dasheen, talas eddoeTaro is known as a plant that is adaptive to high moisture soil. To mitigate the impact of climate change, the genotype response of taro genotypes to variations in water availability is important. The aim of this study was to evaluate the effect of the frequency of water application on the growth and yield of eddoe and dasheen taro types. The research was carried out in the greenhouses of the Cikabayan Experimental Station IPB, Bogor, Indonesia from January to April 2020. The ten taro genotypes were evaluated, consisting of two dasheen types (Talas Sutra and Talas Bentul) and eight eddoe types (S6, S20, S24, S26, S28, S34, S35, and S36). Plants of eight-week-old grown in polybags were treated with different watering frequencies, namely 1, 3, 7, and 15 days until they were saturated. The results showed that all taro genotypes grew more vigorous at watering intervals of 1 and 3 days as indicated by the variables of height, number of leaves, number of tillers, and diameter of the petiole. Fresh weight of yield reached 2-3 times higher in the 1- and 3-day water treatment intervals compared to the 7- and 15-day intervals, indicating the taro plants are sensitive to low soil moisture.
Keywords: climate change, dasheen taro, drought stress, eddoe taro, satoim
Penampilan Karakter Hortikultura Beberapa Varietas Tomat Hibrida di Rumah Kaca Dataran Rendah
Get PDFKegiatan urban farming diperlukan untuk mendukung ketahanan pangan, nutrisi serta vitamin bagi keluarga di wilayah urban. Informasi karakteristik varietas tomat untuk penanaman urban farming di dalam greenhouse masih terbatas. Penelitian ini bertujuan mengevaluasi karakteristik hortikultura beberapa varietas tomat hibrida yang ditanam di dalam greenhouse dataran rendah. Percobaan dilaksanakan dengan rancangan kelompok lengkap teracak (RKLT) terhadap 5 varietas tomat hibrida dengan 3 ulangan. Percobaan dilakukan di greenhouse percobaan Universitas Gunadarma di Wilayah Kota Depok, Jawa Barat, pada bulan Oktober 2018 hingga Januari 2019. Hasil penelitian menunjukkan bahwa kelima varietas yang diuji memiliki perbedaan pada semua karakter kuantitatif. Varietas Tymoti dan Tantyna menunjukkan penampilan yang baik di wilayah dataran rendah serta memiliki ukuran buah yang sesuai untuk tomat sayur. Varietas Agatha dan Ultima mengalami penurunan ukuran buah hingga 40% di greenhouse dataran rendah. Varietas Rewako tidak sesuai untuk penanaman di wilayah dataran rendah karena gugur bunga yang sangat tinggi dan pembentukan buah yang sangat rendah. Karakter kualitatif yang mencirikan masing-masing varietas adalah tipe tumbuh, warna pundak buah muda, bentuk buah, dan bentuk ujung buah.
Kata kunci: determinate, indeterminate, Solanum lycopersicum, urban farmingUrban farming activities are needed to support food security, nutrition, and vitamins for families in urban areas. Information on the characteristics of tomato varieties for urban farming in the greenhouse is still limited. The objective of this research was to evaluate the horticultural characteristics of several hybrid tomato varieties grown in the lowland greenhouse. The experiment was carried out using a randomized complete block design (RCBD) on 5 hybrid tomato varieties with 3 replications at Gunadarma University’s greenhouse, Depok City, West Java, from October 2018 to January 2019. There were significant differences for all quantitative characters among 5 varieties. Tymoti and Tantyna varieties showed good performance at lowland and had good size for vegetable tomato type. Agatha and Ultima varieties showed a fruit size decreasing to 40% in lowland greenhouse. Rewako variety was not suitable for lowland because of the highest flower dropping and lowest fruit setting. Plant growth, young fruit color, and fruit shape in the longitudinal section are important identification keys of tomato variety.
Keywords: determinate, indeterminate, Solanum lycopersicum, urban farmin
Studi Degreening, Kesegaran, dan Daya Simpan Buah Naga Merah (Hylocereus polyrhizus (Weber) Britton & Rose) untuk Menentukan Kriteria Panen Optimum
Get PDFBuah naga merah adalah buah non klimakterik dengan lintasan fotosintesis crassulacean acid metabolism. Kematangan optimum ditandai dengan warna kulit buah merah 100%. Tujuan percobaan adalah mempelajari perubahan warna kulit terkait dengan kesegaran dan daya simpan buah naga merah untuk menentukan kriteria panen optimum. Bahan percobaan disiapkan di kebun Sabisa Farm, Sindang Barang, Bogor (60 35’ 16” LS, 1060 46’ BT; elevasi 219 m di atas permukaan laut). Percobaan menggunakan rancangan kelompok lengkap teracak dengan perlakuan 5 taraf umur panen, yaitu 30, 32, 34, 36, dan 38 hari setelah antesis (HSA) dengan 5 ulangan. Hasil percobaan menunjukkan bahwa kulit buah naga merah 30 HSA memiliki skala warna 2 (1-25% merah), buah 32 HSA memiliki skala warna 4 (26-50% merah), dan buah 34, 36, dan 38 HSA telah mencapai skala warna 6 (100% merah) ketika dipanen. Kulit buah 30 HSA memerlukan waktu 6 hari setelah panen (HSP) dan buah 32 HSA memerlukan waktu 3 HSP untuk mencapai warna merah 100%. Pada saat warna merah 100%, buah 30 - 38 HSA memiliki kandungan padatan terlarut total 11.7 hingga 13.5 oBrix yang masih memenuhi standard pemasaran buah naga sebesar 11.0 oBrix. Kandungan asam tertitrasi total menurun, tetapi kandungan vitamin C meningkat dengan meningkatnya umur panen.
Kata kunci: CAM, kematangan pascapanen, kesegaran buah, satuan panas, tanaman hari-panjangRed dragon fruit is a non-climacteric fruit with a photosynthetic crassulacean acid metabolism pathway. The optimum maturity is characterized by a 100% red skin color. The aim of the experiment was to study the changes in color, freshness, and shelf life of red dragon fruit to determine the optimum harvest criteria. The fruits were harvested from Sabisa Farm, Sindang Barang, Bogor (60 35 ‘16“ S, 1,060 46” E; elevation 219 m above sea level). The experiment used a complete randomized block design with 5 levels of harvesting age, namely 30, 32, 34, 36, and 38 days after anthesis (DAA) with 5 replications. The results showed that the skin of 30 DAA fruit has a color scale of 2 (1-25% red) and 32 DAA fruit has a color scale of 4 (26-50% red). Fruit 34, 36, and 38 DAA had reached a color scale of 6 (100% red) when harvested. The skin of 30 DAA fruit takes 6 days after harvest (DAH) and 32 DAA fruit takes 3 DAH to reach a color scale of 6 (100% red). On the 6 color scale, the fruits of 30 to 38 DAA had a total soluble solids content of 11.7 to 13.5 oBrix which still meets the dragon fruit marketing standard of 11.0 oBrix. The total titrated acid content decreased, but the vitamin C content increased with increasing harvest age.
Keywords: CAM, fruit freshness, heat unit, long-day plant, postharvest ripenes
Seleksi Simultan Karakter Daun Mengering dan Produktivitas pada Galur-galur Padi
Get PDFDrought is an important constraint for rice production in rainfed lowland and shallow freshwater swamp. The area often experiences drought stress at the generative stage of the plants. This study aimed at selecting adaptive lines to terminal drought and formulating a multiple regression model to estimate the productivity under drought stress conditions at the generative stage. The experiment was conducted in a greenhouse of the Indonesian Center for Rice Research, Subang, West Java, using an augmented design with five blocks. The genetic material used was ninety-nine lines and four checks varieties, namely Inpari 30, Limboto, Salumpikit, and IR 20. The model was formulated using stepwise regression analysis. Based on this study, ten lines were adapted to drought stress at the generative stage, namely B13983E-KA-12-2, B13926E-KA-13, B13507E-MR-19, B14366E-KY-50, B14366E-KY-37, IR86384- 46-3-1-B, BP20452e-PWK-0-SKI-1-1, BP20452e-PWK-0-SKI-2-4, BP20452e-PWK-0-SKI-3-3, and BP29790d-PWK-3 -SKI-1-5. The B13507E-MR-19 had the highest productivity (4.02 ton ha-1) under drought stress conditions. Yield under drought stress in the greenhouse could be predicted using a linear regression model involving plant height at early vegetative stage, plant height up to the panicle, tiller number at early vegetative stage, tiller number at late vegetative stage, tiller number at flowering, heading time, number of filled grain, and panicle exsertion length. This model was able to explain 75.92% of yield variation. Potential rice lines and the regression model obtained are expected to contribute to the development of rice varieties adaptive to drought.
Keywords: drought tolerant, freshwater swamp, rainfed, regression model
 
Efisiensi Penggunaan Pupuk pada Sistem Pertanian Terpadu Minapadi
Get PDFMinapadi adalah suatu model yang dianggap sesuai untuk diterapkan di sawah, baik pada lahan yang luas ataupun terbatas selama ketersediaan air mencukupi kebutuhan padi dan ikan untuk tumbuh. Pada minapadi terdapat pengintegrasian antara perikanan dan pertanian yang mana pengintegrasian tersebut dapat meningkatkan ketersediaan pupuk dan pakan. Penelitian ini bertujuan untuk mengetahui pengurangan pupuk anorganik pada pertanian terpadu padi-ikan dengan sistem minapadi sehingga dapat meningkatkan efisiensi pemupukan. Rancangan penelitian menggunakan rancangan acak kelompok faktor tunggal dengan lima taraf perlakuan, yaitu: padi monokultur 100% pupuk anorganik, monokultur ikan, minapadi dengan 100% pupuk anorganik, minapadi dengan 60% pupuk anorganik, dan minapadi dengan 20% pupuk anorganik. Minapadi dapat mengurangi penggunaan pupuk anorganik melalui hubungan komplementer antara padi dan ikan. Pemberian pupuk anorganik 20% dosis anjuran pada minapadi menghasilkan produktivitas padi tidak berbeda nyata dengan minapadi 60% dan 100% dosis anjuran dan dengan padi monokultur 100% dosis anjuran. Minapadi dapat menghemat 80% pupuk anorganik sehingga meningkatkan efisiensi penggunaan pupuk anorganik. Kelangsungan hidup ikan dan berat ikan pada minapadi tidak berbeda nyata dengan monokultur ikan.
Kata kunci: monokultur, produktivitas, pupuk anorganik, unsur haraRice-fish farming is a model that is considered suitable to be applied in rice fields, both on a large or limited land as long as water availability is sufficient for rice and fish to grow. In rice-fish farming, there is integration between fisheries and agriculture where integration can improve the efficiency of the supply and use of fertilizer and feed. The research aimed to find the reduction of inorganic fertilizer in integrated rice-fish farming with the rice-fish system to increase fertilizer efficiency. The experiment used a single factor randomized block design with five levels of treatment, which are; rice monoculture with 100% inorganic fertilizer, fish monoculture, rice-fish farming with 100% inorganic fertilizer, rice-fish farming with 60% inorganic fertilizer, and rice-fish farming with 20% inorganic fertilizer. Rice-fish farming could reduce the application of inorganic fertilizers through complementary relationships between rice and fish. Applying inorganic fertilizer 20% of the reference dose in the rice-fish farming produced productivity that was not significantly different from the rice-fish farming fertilized with 60% and 100% of the reference dose, and the rice monoculture with 100% of the reference dose of inorganic fertilizer. Rice-fish farming could save 80% of inorganic fertilizers so that increasing the efficiency of using inorganic fertilizers. Fish survival and fish weight in rice-fish farming were not significantly different from fish monoculture.
Keywords: inorganic fertilizer, monoculture, productivity, soil nutrient
Seleksi Generasi Awal untuk Toleransi terhadap Suhu Tinggi pada Padi
Get PDFDampak suhu tinggi pada pertumbuhan dan produktivitas padi dapat dikurangi dengan menanam varietas toleran. Tujuan penelitian ini adalah memperoleh informasi tentang kendali genetik karakter hasil populasi bersegregasi padi pada dua tingkat stress suhu tinggi serta mengidentifikasi genotipe toleran. Penelitian dilakukan dari Agustus 2016 hingga Februari 2017. Saat fase vegetatif maksimum tetua dan populasi F3 diperlakukan di bawah dua kondisi suhu, yaitu di lantai jemur dan rumah kaca dengan suhu maksimum dan minimum rata-rata masing-masing 38.89/22,67 °C dan 41.62/23.32 °C. Karakter yang diamati adalah hasil dan komponen hasil. Hasil penelitian menunjukkan bahwa kondisi suhu tinggi mempengaruhi pertumbuhan dan hasil pada tetua dan populasi F3. Terdapat keragaman karakter agronomi padi pada kondisi cekaman suhu tinggi. Jumlah gabah isi per malai adalah satu-satunya karakter yang dikendalikan oleh aksi gen aditif dengan nilai heritabilitas tergolong tinggi pada cekaman suhu di lantai jemur dan dalam rumah kaca sehingga karakter ini dapat digunakan untuk mengidentifikasi individu toleran pada generasi awal. Terdapat 13 individu yang toleran terhadap cekaman suhu tinggi berdasarkan nilai SSI. Karakter bobot gabah isi dikendalikan oleh gen-gen non aditif sehingga dianjurkan seleksi untuk peningkatan bobot gabah isi dilakukan pada generasi lanjut. Metode SSD direkomendasikan sebagai metode untuk perbaikan toleransi terhadap suhu tinggi dikombinasikan dengan metode shuttle breeeding.
Kata kunci: fertilitas, indeks, perubahan iklim, toleranThe impacts of high-temperature stress on rice growth and productivity can be mitigated by growing tolerant varieties. This research was conducted to estimate the genetic parameters and to select the best genotypes based on the susceptibility stress index (SSI) values. This research was conducted from August 2016 to February 2017. Half of the five weeks seedling tiller of each F3 plant was transferred to new pot culture so that each genotype of the F3 rice population grown in two pots. At the maximum vegetative phase, the parental and F3 populations were treated under two different temperatures: in the open ground area and inside a greenhouse with daily mean temperatures of 38.89/22.67 °C dan 41.62/23.32 °C, respectively. The traits observed were yield and yield components. The results showed that the grain yield of the parents and the F3 population were lower when grown inside the greenhouse. The filled grain number per panicle was controlled by additive gene action in these two environments, and is suggested to be a selection character. Selection based on SSI index obtained 13 genotypes tolerant to heat stress and had higher yield compared to their parents. SSD method combined with shuttle breeding is recommended as a breeding method to produce tolerant and high yielding lines.
Keywords: heat stress, heritability, segregating population, SS
Uji Adaptasi dan Seleksi Varietas Partisipatif terhadap Galur-Galur Padi Toleran Rendaman dan Kekeringan di Lahan Rawa Lebak
Get PDFPeran varietas unggul bersama pemupukan dan tata air terhadap peningkatan produktivitas sangat tinggi. Oleh karena itu upaya peningkatan produktivitas padi di lahan rawa lebak tengahan dilakukan dengan mengintegrasikan varietas unggul dengan pemupukan dan tata kelola air. Percobaan induk berupa pengenalan 10 genotipe unggul padi, dengan pemupukan optimal serta tata kelola air memanfaatkan mini polder telah dilakukan di Kabupaten Hulu Sungai Utara, Provinsi Kalimantan Selatan. Rancangan yang digunakan adalah rancangan acak kelompok dengan tiga ulangan. Percobaan anak dilakukan di 10 lahan petani dengan teknik budidaya sesuai kebiasaan petani. Penilaian terhadap genotipe dilakukan menggunakan kuisioner dan metode seleksi partisipatif. Hasil penelitian menunjukkan bahwa komponen hasil dan bobot hasil genotipe yang ditanam di percobaan induk lebih baik dibandingkan di percobaan anak. Kedua metode penilaian genotipe, menghasilkan penilaian yang cukup konsisten. Tiga varietas disukai oleh sebagian besar responden, yaitu Inpara 3, Tapus, dan Inpara 8 Agritan. Beberapa aspek yang perlu diperhatikan dalam perakitan dan pengembangan varietas padi di lahan rawa lebak antara lain vigor tanaman, jumlah anakan produktif, bentuk dan warna gabah, umur tanaman dan ketahanan terhadap penyakit.
Kata kunci: preferensi, rawa lebak, seleksi partisipatif, varietas unggulT
The role of high yielding varieties along with fertilization and water management for increasing rice productivity is essential. Therefore, the efforts to increase productivity in the middle freshwater swamp are carried out using high yielding varieties with fertilization and water management called mini polder. The mother trial was conducted to introduce 10 rice genotypes, with optimal fertilizer and water management. It has been carried out in Hulu Sungai Utara District, South Kalimantan Province. The research was following a randomized block design with three replications. The baby trials were carried out in 10 farmer fields. Assessment of genotypes was carried out using questionnaires and participatory selection methods. The results showed that the yield and yield components of genotypes grown in the mother trial were better than baby trials. Both assessment of genotypes produced fairly consistent assessments. There were three varieties preferred by most respondents, namely Inpara 3, Tapus and Inpara 8 Agritan. Some characters such as plant vigor, number of productive tillers, grain shape and color, maturity, and disease resistance were important in the development of rice varieties in swamp land.
Keywords: high yielding varieties, freshwater swamp, preference, participatory selectio