98 research outputs found
Penghambatan Perkecambahan Akibat Aplikasi Ekstrak dari Tanaman Utama dan Ratun Sorgum (Sorghum bicolor L.) yang Diproduksi di Lahan Rawa
Full text linkSusilo E, Setyowati N, Nurjannah U, Riwandi, Muktamar Z. 2021. Inhibition of germination due to application of extracts from main plants and ratoon sorghum (Sorghum bicolor L.) produced in swamplands. In: Herlinda S et al. (Eds.), Prosiding Seminar Nasional Lahan Suboptimal ke-9 Tahun 2021, Palembang 20 Oktober 2021. pp. 426-434. Palembang: Penerbit & Percetakan Universitas Sriwijaya (UNSRI).Sorghum is one of the plants that produces allelopathic chemicals with bioherbicide potential. Water extract can be used to suppress weeds around planted plants. The water extract material's source has the potential to be used as a variety of bioherbicides. The goal of the study was to see if water extract of sorghum obtained from the main plant and ratoon growing in swampland with different test plants could hinder germination. A randomized block design was adopted in this investigation. The first factor is the extract's source, which is made up of the primary plant and ratoon. The second component was the test plants, which were Numbu and Suri 3 types. Experiments on Petri dishes used the bioassay method. Each petri dish received 10 mL of aqueous extract, 25 sorghum seeds, and was cultured for five days. The main plant had the largest germination inhibition, as evidenced by normal germination (33.78%), shorter radicle length (5.55 cm), and a higher number of non-growing seeds (47.12%). Furthermore, the Suri 3 variety had the maximum germination inhibition, with normal sprouts (34.65%), radicle length (5.10 cm), sprout wet weight (0.118 g), and radicle dry weight (0.118 g) in the test plant (0.0012 g). low, and seeds did not develop any faster (43.57 percent). These data suggest that the most allelopathic chemicals are produced by sorghum extract taken from the primary plant. Furthermore, the maximum inhibition was achieved using sorghum extract from the Numbu variety in combination with the Suri 3 test plant. As a result, the primary crop has the greatest potential as a bioherbicide source
Soil Quality Improvement Using Compost and Its Effects on Organic-Corn Production
Full text linkIntensive agriculture has been well known to cause decline in soil organic matter and nutrient content of the soils. Therefore, efforts should be taken to avoid this from happening. Addition of organic fertilizers like compost has been increasingly become more important in Indonesian agriculture in the last couple of decades. The objectives of this study were to produce high quality compost using Indore method and to investigate its effects on organic-corn production. The study was conducted in the Integrated Agriculture Zone (IAZ), University of Bengkulu for two years (2012 and 2013). The study consisted of three steps: (i) soil fertility identification, (ii) compost production, and (iii) organic-corn field production. Soil fertility identification involved physical, chemical, biological analysis of soil samples collected from less fertile and moderately fertile soils. A randomized completely block design was employed in the field study which involved five rates of compost and two levels of soil fertility with three replications. In 2012, high quality compost was black, had pH 8, fine, odorless, and sufficiently high in NPK contents. Organic-corn yielded 2.94 and 5.69 Mg ha-1 of dried kernels on less fertile and moderately fertile soils, respectively at 20 Mg ha-1 compost. Similarly, in 2013 high quality compost was black, had pH 8, moderate, odorless, and high in NPK contents. The corn yields were 3.75 and 1.93 Mg ha-1 on less fertile and moderately fertile soils, respectively at 22.50 Mg ha-1 compost. [How to Cite: Riwandi, M Handajaningsih, Hasanudin, and A Munawar. 2015. Soil Quality Improvement Using Compost and its Effects on Organic-Corn Production. J Trop Soils 19: 11-19. Doi: 10.5400/jts.2015.20.1.11][Permalink/DOI: www.dx.doi.org/10.5400/jts.2015.20.1.11
Soil Quality Improvement Using Compost and its Effects on Organic-Corn Production
Full text linkIntensive agriculture has been well known to cause decline in soil organic matter and nutrient content of the soils. Therefore, efforts should be taken to avoid this from happening. Addition of organic fertilizers like compost has been increasingly become more important in Indonesian agriculture in the last couple of decades. The objectives of this study were to produce high quality compost using Indore method and to investigate its effects on organic-corn production. The study was conducted in the Integrated Agriculture Zone (IAZ), University of Bengkulu for two years (2012 and 2013). The study consisted of three steps: (i) soil fertility identification, (ii) compost production, and (iii) organic-corn field production. Soil fertility identification involved physical, chemical, biological analysis of soil samples collected from less fertile and moderately fertile soils. A randomized completely block design was employed in the field study which involved five rates of compost and two levels of soil fertility with three replications. In 2012, high quality compost was black, had pH 8, fine, odorless, and sufficiently high in NPK contents. Organic-corn yielded 2.94 and 5.69 Mg ha-1 of dried kernels on less fertile and moderately fertile soils, respectively at 20 Mg ha-1 compost. Similarly, in 2013 high quality compost was black, had pH 8, moderate, odorless, and high in NPK contents. The corn yields were 3.75 and 1.93 Mg ha-1 on less fertile and moderately fertile soils, respectively at 22.50 Mg ha-1 compost. [How to Cite: Riwandi, M Handajaningsih, Hasanudin, and A Munawar. 2015. Soil Quality Improvement Using Compost and its Effects on Organic-Corn Production. J Trop Soils 19: 11-19. Doi: 10.5400/jts.2015.20.1.11][Permalink/DOI: www.dx.doi.org/10.5400/jts.2015.20.1.11
MAFIA PUPUK ADALAH KEJAHATAN SISTEMIK DAN TEROR
No full textPupuk ialah bahan anorganik dan/atau bahan organik berasal dari pabrik atau sisa tanaman pertanian berguna untuk meningkatkan produksi pertanian. Produksi pertanian dapat ditingkatkan dengan memberikan pupuk, penggunaan bibit unggul, tersedianya tanah yang subur dan air, serta pengelolaan tanah yang baik. Pupuk pabrik seperti Urea, TSP, SP36, ZA, NPK, KCl, K2SO4, MgSO, dan kapur dolomit. Pupuk organik berasal dari bahan organik lokal (sisa tanaman legum/non legum, pupuk kompos, pupuk hijau, pupuk kandang, dan pupuk cair. Keuntungan pupuk pabrik adalah ketersediaan nutrisi tanaman sangat cepat karena mudah larut, mudah memperolehnya, mudah mengaplikasikannya, mudah diangkut karena kadar nutrisi dalam pupuk pabrik sangat tinggi. Tidak heran kalau pupuk pabrik dicari oleh petani untuk meningkatkan produksi tanaman secara cepat. Kelemahan pupuk pabrik adalah residu pupuk yang tidak diserap tanaman akan larut di dalam air dan mencemari lingkungan tanah, air, dan tanaman
MAKNA MENULIS ARTIKEL DI JURNAL ILMIAH
No full textKita terkejut dengan berita di koran kompas tanggal 6 Februari 2012 mengenai Direktorat Jenderal Pendidikan Tinggi (Dikti) mewajibkan semua karya ilmiah program sarjana, magister, dan doktor lulusan setelah Agustus 2012 dimuat di jurnal ilmiah. Kebijakan tersebut dinilai sejumlah rektor tidak jelas dan membingungkan. Alasan yang dikemukakan oleh beberapa rektor di Indonesia bahwa daya tampung jurnal ilmiah tidak memadai bila dibandingkan dengan kelulusan sarjana setiap tahunnya. Hal ini dapat menghambat dan menyulitkan kelulusan sarjana. Direktur Jenderal Dikti Kemdikbud Djoko Santosa menjelaskan bahwa perlunya persyaratan itu karena jumlah karya ilmiah Indonesia dinilai secara total masih rendah dibandingkan dengan Malaysia adalah sepertujuhnya
IDENTIFIKASI DAN INTERPRETASI INDIKATOR KESEHATAN TANAH
No full textThe purposes of the research were to identify soil health based on soil indicator performances, and interprete soil health classes from Padang Betuah area of Bengkulu. Soil, consisted of mineral and peat soils, were sampled using soil random sampling technique. The soil variables for field evaluation included color, moisture content, texture, structure, compaction, land slope, organic matter, pH, amount of earthworm, erosion level, LCC (Legume Cover Crop), and vegetation performance. Variables for soil laboratory evaluation were pH, electrical conductivity (EC), total Carbon and Nitrogen, available-Posphorous, cation exchangeable capacity, base saturation, and aluminum saturation. The result of field and laboratory evaluation showed that soil health categories were indicated as healthy soil and moderate healthy soil both for mineral and peat soils
METODE CEPAT PENILAIAN KESEHATAN TANAH DENGAN INDIKATOR KINERJA TANAH
No full textKesehatan tanah adalah integrasi dan optimasi sifat tanah yang bermanfaat untuk meningkatkan produktivitas dan kualitas tanah, tanaman, dan lingkungan. Tujuan penelitian ini untuk mengukur sifat-sifat tanah yang berpengaruh terhadap kesehatan tanah di lapangan dan mengkelaskan kesehatan tanahnya. Metode penelitian berupa survei tanah, cuplikan tanah, pemberian skor setiap indikator tanah, dan pengkelasan kesehatan tanah. Indikator tanah yang digunakan berjumlah 12, terdiri atas warna tanah, kadar air, kemiringan lereng, tekstur, struktur, bahan organik, pH, populasi cacing, tanaman penutup tanah (LCC), erosi tanah, padatan tanah, dan kenampakan vegetasi. Hasil yang diperoleh bahwa tanah di kabupaten Muko-Muko, provinsi Bengkulu termasuk tanah Tidak Sehat, tanah Kurang Sehat, tanah Cukup Sehat, dan tanah Sehat. Kesimpulan yang diperoleh bahwa kesehatan tanah di Muko-Muko sangat beragam, bergantung pada indikator kinerja tanah yang dipakai
OPTIMASI PEMANFAATAN LAHAN LEBAK UNTUK MENYANGGA PRODUKSI TANAMAN PANGAN: KARAKTERISTIK BIOFISIK LAHAN LEBAK
No full textTujuan penelitian ini untuk memperoleh data dasar keadaan lingkungan, sifat-sifat tanah dan air, dan indeks kesuburan tanah di lahan lebak. Metode yang digunakan adalah survei dan analisis contoh tanah di laboratorium. Survei tanah meliputi pengukuran situasi detail lahan lebak dengan menggunakan Teodolit dan GPS, pengambilan contoh tanah dengan pengeboran. Lokasi survei terdiri atas 3 kabupaten (Muko-Muko, Bengkulu Utara, dan Seluma) dengan 8 desa yang tersebar 3 desa di Muko-Muko, 3 desa di Bengkulu Utara, dan 2 desa di Seluma. Contoh tanah dianalisis sifat-sifatnya di laboratorium, kemudian hasilnya digunakan untuk membuat indeks kesuburan tanah dan rekomendasi pupuk. Output survei ini adalah data, informasi, indeks kesuburan tanah, dan peta situasi detail dan peta tanah lahan lebak. Hasil yang diperoleh bahwa jenis tanah terdiri atas tanah mineral dan tanah gambut. Jenis tanah mineral dikelompokkan ke dalam jenis tanah Aquent dan Aquept (Subordo) dengan variasi pirit yang berbeda (bebas pirit, pirit potensial, pirit aktual). Penentuan pirit secara kualitatif dengan pH (Hidrogen Peroksida). Kedalaman pirit dijumpai pada lapisan tanah sampai dengan 60 cm. Jenis tanah gambut terdiri atas Saprist dan Fibrist (Subordo). Ketebalan tanah gambut bervariasi dari dangkal (200 cm). Luas tanah gambut hanya 30% dan sisanya tanah mineral. Indeks kesuburan tanahdi lahan lebak sangat bervariasi mulai dengan Sangat Rendah (SR) sampai dengan Tinggi (T).Hasil analisis air menunjukkan bahwa air irigasi untuk semua lokasi yang diambil layakdigunakan untuk irigasi, kecuali di Padang Bakung (Seluma), karena ada pengaruh air lautyang dominan. Kendala utama yang dijumpai di lapangan adalah ketebalan lapisan gambuttebal (>250 cm); ketebalan tanah mineral yang minimal (10 cm) di bawahnya ditemukan pasir (contoh di Padang Bakung); kondisi tanah yang lembek; belum seluruh lahan lebakdigarap dengan baik, masih banyak dijumpai semak belukar dan lahan lebak yang tidur (tidakdigarap)
PEMBANDINGAN PENILAIAN KESEHATAN TANAH ANTARA INDIKATOR KINERJA TANAH DENGAN INDIKATOR PERTUMBUHAN TANAMAN SELADA
No full textTERAK BAJA : BAHAN AMELIORAN DUA MATA PISAU PERTANIAN
No full textBahan amelioran merupakan bahan pembenah tanah baik sebagai bahan untuk memperbaiki sifat fisik, kimia, dan biologi tanah maupun sebagai pupuk untuk meningkatkan hasil pertanian. Kandungan terak baja yang dominan berupa logam berat, kalsium, dan silikat. Logam berat sebagian berguna sebagai unsur mikro dan makro bagi tanaman, tetapi sebagian lagi berupa racun bagi tanaman, hewan dan manusia. Persoalannya adalah bagaimana menanggulangi toksitas logam berat terhadap tanaman, hewan, dan manusia. Penelitian menunjukkan bahwa dengan kondisi pH tanah sampai dengan pH mendekati 7 kelarutan logam berat seperti Al, Fe, Mn, Cd, Pb, dan Cr sangat kecil sehingga tidak menimbulkan bahaya bagi tanaman, hewan, dan manusia. Terak baja dicampur dengan kompos (bahan organik matang) meningkatkan hasil tanaman pertania
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