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Komposisi Gulma pada Berbagai Jarak Tanam Padi Secara IPAT–BO dan Konvensional Antralina, Merry; Yuwariah, Yuyun; Simarmata, Tualar
Jurnal Agro Vol 1, No 1 (2014)
Publisher : Jurusan Agroteknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/77

Abstract

Penelitian yang bertujuan mempelajari komposisi gulma tanaman padi sawah pada sistem bertanam secara IPAT-BO dan konvensional  telah dilaksanakan pada bulan April 2013 sampai bulan Juli 2013 di Kelompok Tani Sadang Mukti, Kampung Sadang Sari, Kabupaten Bandung Jawa Barat yang terletak pada ketinggian 668 m di atas permukaan laut. Penelitian menggunakan metode eksperimen, dengan Rancangan Petak Terpisah, 3 kali ulangan, sebagai petak utama  yaitu faktor metode pengairan (M), yang terdiri dari pengairan secara IPAT-BO dan konvensional, sedangkan anak petak adalah jarak tanam (J), yang terdiri dari : 30 x 35 cm, 30 x 25 cm, 35 x 35 cm,dan 30 x 30 cm. Hasil penelitian menunjukkan bahwa terjadi interaksi antara metode pengairan dan jarak tanam terhadap nilai jumlah dominasi gulma, dan bobot kering gulma.Gulma yang dominan pada perlakuan IPAT-BO lebih banyak dibanding perlakuan konvensional, sedangkan bobot kering gulma terberat terjadi pada metode IPAT-BO dengan jarak tanam 35 cm x 35 cm. The research was aimed to assess the effect of different plant spacing to weed composition and lowland rice yield in SOBARI and conventional irrigation methods. The experiment had been conducted in Farmers Groups Sadang Mukti, Sadang Sari Village, Bandung District, West Java at 668 m above sea level, from April 2013 to July 2013. It was arranged in split plot design, consisted of two factor, irrigation methods factor (M) as main plot, namely: irrigation methods in SOBARI (m1) and conventional (m2),subplot was plant spacing factor (J), which consisted of four levels of factors, namely: 30 x 35 cm, 30 x 25 cm, 35 x 35 cm, and 30 x 30 cm. The results showed that there was interaction between irrigation method and plant spacing on the value of domination number of weeds, and weed dry weight. Dominantweeds in SOBARI method were more than conventional treatment, weed dry weight in SOBARI method with spacing of 35 cm x 35 cm had greater than the other treatments.
KEMAMPUAN BEBERAPA SPESIES JAMUR TANAH DALAM MENGENDALIKAN GLOBODERA ROSTOCHIENSIS (WOLL.) PADA TANAMAN KENTANG Kalay, Agusthin Marthin; Natasasmita, Sadeli; Suganda, Tarkus; Simarmata, Tualar
Jurnal Natur Indonesia Vol 13, No 3 (2011)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (57.202 KB) | DOI: 10.31258/jnat.13.3.214-219

Abstract

Potatos cyst nematode (Globodera rostochiensis Woll.) in Indonesia has been find for the first time in Malang EastJava. This nematode suppress potato growth and caused yield looses up to 70.63%. Examination the ability of soilfungus Fusarium oxysporum TR1, F. solani TR2, F. oxysporum KT1, F. chlamydosporum KT2, F. oxysporum SM1,Paecilomyces lilacinus SM3, and F. chlamydosporum SM4 dalam pengendalian G. rostochiensis againsit G.rostochiensis on susceptible potato has been carried in out the green house, using Randomized Block Design withfour replication. Results showed that all of the seven fungi had the capacity to parasite G. rostochiensis. Inoculationof P. lilacinus SM3, F. chlamydosporum SM4, F. oxysporum KT1, and F. oxysporum SM1 decreased female populationto 58.56%, 59.09%, 60.76%, and 61.01% respectively compared to that without inoculation. While the other fungionly decrease female population up to 50%. The impact of male population reduction was the enhancement oftuber weight of potato. Adult male nematode was not found in this experiment.
APPLICATION OF BIOAMELIORANT AND BIOFERTILIZERS TO INCREASE THE SOIL HEALTH AND RICE PRODUCTIVITY Simarmata, Tualar; Hersanti, .; Turmuktini, Tien; Fitriatin, Betty N.; Setiawati, Mieke R.; Purwanto, .
HAYATI Journal of Biosciences Vol. 23 No. 4 (2016): October 2016
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (304.97 KB) | DOI: 10.4308/hjb.23.4.181

Abstract

The major rice intensity of diseases in Indonesia was increased significantly and has caused a yield loss of up to 20?30%. The experiments had been conducted to investigate the effect of bioameliorant or composted straw (CS) combined with consortia of biofertilizers (CB) and biocontrol agent to restore the soil health and promote the induced systemic resistance (ISR) for increasing the rice productivity. The experiment arranged as randomized block design consisted of 12 treatments (0, 2.5, 5.0 and 7.5 ton of CS per ha combined with 400 g of CB and 200 g inoculant of CB + 200 g inoculant of Trichoderma sp and was provided with three replications. The experimental results revealed that application of 2.5?7.5 ton per ha of bioameliorant combined with 400 g per ha of CB and 400 g Trichoderma sp has increased the ISR and enhanced the rice productivity significantly. The brown spot, sheath rice blightand bacterial leaf blight diseases were reduced from 16.7% to 3.3?8.0%, 20% to 4?10%, 24% to 2.7?4.7% and 20.7% to 8?14.0%, respectively at 7 weeks after transplanting. In addition, the rice grain yield was increased from about 7.1 ton ha?1 to 7.9?10.1 ton per ha.
Preferensi petani terhadap keragaan padi (Oryza sativa) unggul untuk lahan sawah di wilayah Pangandaran dan Cilacap Prayoga, Muhamad Khais; Rostini, Neni; Setiawati, Mieke Rochimi; Simarmata, Tualar; Stoeber, Silke; Adinata, Kustiwa
Kultivasi Vol 17, No 1 (2018)
Publisher : Fakultas Pertanian UNPAD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (303.772 KB)

Abstract

Abstract The object that conducted in this study is farmers preferences of rice plant charac-teristics. This study was taken in 3 villages which are village Ciganjeng, village Pamotan, and village Rawaapu. The method used in this study was quantitative design with descriptive analysis. The respondents were 64 rice plant farmers. Measuring instrument used was questionnaire and interview. The result of this study showed that farmers has its own preference for the character of rice plants. Conclution of this study is farmers preferred rice plants which has an average height of plants, wide leaves, leaves surface, leaves angle, and rice straws type; rice straw that has many branches; strong braches; has a lot rice grains; maturity of rice plants; lenght and wide grains size; non-aromatic; and tender texture. The farmers thought that leaves surface isnt an important character of a rice plants;  high of plants, leaves lenght and wide, leaves angle, rice straws type, grains lenght and wide, and rices scent are quite important characteristics; branchs strenght, grains quantity, and plants maturity are an important characteristics; resistance to pests, disease resistance, drought resistance, resistance to inundation, salinity resistance, productivity, and rice texture are the most important characteristics. Keywords : preferences, farmer, superior varietiesObjek yang dikaji dalam penilitian ini adalah preferensi petani terhadap karakter tanaman padi. Tempat penelitian dilaksanakan di 3 desa (Desa Ciganjeng, Desa Pamotan dan Desa Rawaapu). Desain penelitian menggunakan desain kuantitatif dengan pendekatan analisis data secara deskriptif. Metode yang diperunakan adalah survey untuk mengumpulkan data dengan mengedarkan kuisioner dan melakukan wawancara. Jumlah petani yang diwawancarai yaitu 64 orang. Hasil dari penelitian ini adalah petani lebih menyukai tanaman padi yang memiliki tinggi tanaman, panjang daun, lebar daun, permukaan daun, sudut daun dan tioe malai yang sedang, cabang malai sekunder yang banyak, ketegaran batang yang kuat, jumlah anakan yang banyak, umur yang genjah, ukuran gabah yang panjang dan lebar, aroma yang tidak wangi, serta tekstur nasi yang pulen. Petani beranggapan bahwa karakter permukaan daun merupakan karakter yang tidak penting; karakter tinggi tanaman, panjang daun, lebar daun, sudut daun, tipe malai, panjnag gabah, lebar gabah, dan aroma tergolong karakter cukup penting; karakter ketegaran batang, jumlah anakan, dan umur tanaman merupakan karekter yang penting; karakter ketahanan terhadap hama, ketahanan terhadap penyakit, ketahanan terhadap kekeringan, ketahanan terhadap genangan, ketahanan terhadap salinitas, produktivitas, dan karakter tekstur nasi merupakan karakter yang sangat penting.Kata kunci : preferensi, petani, varietas unggul
Nitrogenase Activity and IAA Production of Indigenous Diazotroph and Its Effect on Rice Seedling Growth Purwanto, Purwanto; Yuwariah, Yuyun; Sumadi, Sumadi; Simarmata, Tualar
AGRIVITA, Journal of Agricultural Science Vol 39, No 1 (2017): FEBRUARY
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v39i1.653

Abstract

The diazotroph bacteria as ecofriendly biofer-tilizers play an important role in improving the N status and availability of paddy soil. Laboratory experiment to study nitrogenase activity and IAA production of diazotroph from rice rhizosphere and to assess its effect on the growth of rice seedling has been conducted from September to October 2014 in Agronomy and Horticulture Laboratory Faculty of Agriculture Jenderal Soedirman University, Purwokerto. The experiment was arranged as a completely randomized design and consisted of seven treatments and provided with 4 replications. The treatments were the isolates of indegenous diazotroph (T1 = A11003, T2 = A230041, T3 = A24001, T4 = A230022, T5 = A230021, T6 = A230042 and T7 = without inoculation). The nitrogenase activity measured by acetylene reduction assay method and IAA production was measured by HPLC method. Plant height, leaf greeness, leaf area, total dry weight and total root length were determined on 21 days after sowing. The experimental results showed that the isolat A230021 was identified as Rhizobium sp. LM-5 and have the highest nitrogenase activity at 0.07 µM C2H4 ml-1 h-1 and IAA production reached 19.01 ppm. Inoculation with strains of diazotroph enhanced chlorophyl content, total root length, and biomass production.
Growth of Rice (Oryza sativa) Varieties: Mendawak, Inpari 34, Ciherang, and Bangir in Ciganjeng Village, Pangandaran District Prayoga, Muhamad Khais; Rostini, Neni; Simarmata, Tualar; Setiawati, Mieke Rochimi; Stoeber, Silke; Adinata, Kustiwa
Jurnal Biodjati Vol 3, No 2 (2018): November
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/biodjati.v3i2.3232

Abstract

Type of rice varieties is one of the important factors that affecting rice production. For countries, rice breeders of Indonesia can take advantage of specific environmental potential in determining the distribution policy of superior varieties. The purpose of this study was to observe the appearance of plant height and the number of tillers of four rice varieties in Ciganjeng Village, namely Mendawak, Inpari 34, Ciherang, and Bangir. The design used completely randomized block design and repeated three times. Observations were carried out eight times in the vegetative phase, started from 14 days to 63 days after planting. This research was participatory and involved farmers. Farmers roled as observers to measure and record observation. All data analyzed by ANOVA with tukey’s HSD test as post hoc test. The results showed that both Inpari 34 and Bangir variety had the highest average plant height growth while Mendawak and Bangir has the highest average number of tillers.
INOKULASI FUNGI MIKORIZA ARBUSKULA (FMA) MENINGKATKAN POPULASI BAKTERI PELARUT FOSFAT DAN SERAPAN HARA P TANAMAN CABAI (Capsicum Annuum L.) PADA INCEPTISOLS Aldino Rahman, Muhammad; Nurbaity, Anne; Simarmata, Tualar; Haryantini, Baiq Azizah
Jurnal Agrotek Indonesia Vol 4, No 1 (2019): Jurnal Agrotek Indonesia
Publisher : Faculty of Agriculture University of Singaperbangsa Karawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (250.318 KB) | DOI: 10.33661/jai.v4i1.1270

Abstract

Fungi mikoriza arbuskula (FMA) memegang peranan penting dalam produktivitas cabai melalui peningkatan kualitas tanah. Eksperimen untuk mengetahui pengaruh inokulan FMA populasi bakteri pelarut fosfat dan serapan P tanaman cabai pada Inceptisols dilaksanakan di rumah plastik dengan ketinggian ± 752 MDPL, Jatinangor. Percobaan menggunakan Rancangan Acak Kelompok yang terdiri atas empat perlakuan (kontrol, 100, 200, 300 spora FMA isolat dari tanah hutan alami). Hasil penelitian menunjukkan bahwa terdapat pengaruh nyata inokulan FMA terhadap populasi bakteri pelarut fosfat dan serapan P. Pemberian inokulan FMA isolat dengan kepadatan 100 spora/tanaman lebih efisien dalam meningkatkan populasi perlarut fosfat dan serapan P dibandingkan perlakuan lain
Aplikasi Amelioran Organik Terhadap Populasi Rhizobacteriadan Status Kecukupan Hara (N,P,K) Tanaman Jagung (Zea mays L.) pada Inceptisols Sinaga, Juli Enita; Sofyan, Emma Trinurani; Simarmata, Tualar
Jurnal Agrotek Indonesia Vol 3, No 2 (2018): Jurnal Agrotek Indonesia
Publisher : Faculty of Agriculture University of Singaperbangsa Karawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (361.19 KB) | DOI: 10.33661/jai.v3i2.1379

Abstract

Amelioran organik memegang peranan penting dalam meningkatkan kualitas tanah dan pertumbuhan tanaman. percobaan ini bertujuan untuk mengetahui pengaruh kombinasi amelioran organik dan pupuk N,P,K terhadap populasi Rhizobacteria dan status kecukupan hara tanaman jagung. Penelitian dilakukan dari Oktober 2017 sampai Januari 2018 di Lahan Percobaan Departemen Ilmu Tanah, Universitas Padjadjaran. Percobaan menggunakan metodeRancangan Acak Kelompok (RAK) yang terdiri dari sepuluh perlakuan dan tiga ulangan. Parameter yang diamati adalah populasi total bakteri, populasi bakteri pelarut fosfat (BPF), populasi bakteri penambat nitrogen (BPN), dan kadar N,P,K tanaman jagung. Hasil penelitian menunjukkan pengaruh yang nyata pada populasi Rhizobacteria dan kadar hara (N,P,K). Populasi tertinggi pada total bakteri, BPF, dan BPN secara berurutan terdapat pada perlakuan ¼ N,P,K + 1 amelioran organik (2,89 x 1010 cfu/g), ¼ N,P,K + 1 amelioran organic (8,02 x 109 cfu/g), dan ½ N,P,K + 1 amelioran organik (2,32 x 107 cfu/g).Perlakuan ½ N,P,K + 1 amelioran organik memberikan hasil tertinggi padakadar hara (N,P,K). Status hara tanaman dapat digolongkan menjadi sedang (N), sangat tinggi (P), dan rendah (K). Kata Kunci : amelioran organik, rhizobakteria, NPK, status hara, inceptisols
Efek Komposisi dan Dosis Amelioran terhadap Sifat Tanah dan Hasil Tanaman Cabai (Capsicum annuum L.) pada Inceptisols Situmorang, Yosef Edwin Gunawan; Nurbaity, Anne; Simarmata, Tualar
Jurnal Agrotek Indonesia Vol 4, No 1 (2019): Jurnal Agrotek Indonesia
Publisher : Faculty of Agriculture University of Singaperbangsa Karawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (336.841 KB) | DOI: 10.33661/jai.v4i1.1280

Abstract

Pupuk anorganik memiliki peranan yang penting dalam meningkatkan produktivitas tanaman cabai. Akan tetapi, penggunaannya terus-menerus dapat menyebabkan kualitas tanah menurun. Penggunaan amelioran atau bahan pembenah tanah diharapkan dapat meningkatkan kualitas tanah. Percobaan ini bertujuan untuk mengetahui pengaruh komposisi dan dosis amelioran terbaik terhadap sifat tanah dan hasil tanaman cabai pada Inceptisols dan dilaksanakan di Kebun Percobaan Fakultas Pertanian Universitas Padjadjaran. Rancangan yang digunakan adalah Rancangan Acak Kelompok (RAK) pola faktorial yang terdiri atas dua faktor yang diulang sebanyak tiga kali. Faktor pertama yaitu komposisi amelioran yang terdiri atas empat taraf (a1 = 80% Pupuk Kandang Sapi + 20% Biochar Tempurung Kelapa ; a2 = 95% Komposisi a1 + 5% Dolomit dan Guano ; a3 = 90% Komposisi a1 + 10% Dolomit dan Guano ; a4 = 85% Komposisi a1 + 15% Dolomit dan Guano), dan faktor kedua yaitu dosis amelioran yang terdiri atas empat taraf (t0 = 0 ton/ha ; t1 = 2 ton/ha ; t2 = 4 ton/ha ; t3= 6 ton/ha). Hasil penelitian menunjukkan bahwa tidak terdapat interaksi antara komposisi dan dosis amelioran terhadap sifat tanah dan hasil tanaman cabai pada Inceptisols. Pemberian dosis amelioran 4 ton/ha dapat memberikan peningkatan sifat tanah terbaik dan meningkatkan hasil tanaman cabai sebesar 44,9%.
Preferensi petani terhadap keragaan padi (Oryza sativa) unggul untuk lahan sawah di wilayah Pangandaran dan Cilacap Prayoga, Muhamad Khais; Rostini, Neni; Setiawati, Mieke Rochimi; Simarmata, Tualar; Stoeber, Silke; Adinata, Kustiwa
Kultivasi Vol 17, No 1 (2018)
Publisher : Fakultas Pertanian UNPAD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (303.772 KB)

Abstract

Abstract The object that conducted in this study is farmer's preferences of rice plant charac-teristics. This study was taken in 3 villages which are village Ciganjeng, village Pamotan, and village Rawaapu. The method used in this study was quantitative design with descriptive analysis. The respondents were 64 rice plant farmers. Measuring instrument used was questionnaire and interview. The result of this study showed that farmers has its own preference for the character of rice plants. Conclution of this study is farmers preferred rice plants which has an average height of plants, wide leaves, leave's surface, leave's angle, and rice straw's type; rice straw that has many branches; strong braches; has a lot rice grains; maturity of rice plants; lenght and wide grains size; non-aromatic; and tender texture. The farmers thought that leave's surface isn't an important character of a rice plants;  high of plants, leave's lenght and wide, leave's angle, rice straw's type, grain's lenght and wide, and rice's scent are quite important characteristics; branch's strenght, grain's quantity, and plant's maturity are an important characteristics; resistance to pests, disease resistance, drought resistance, resistance to inundation, salinity resistance, productivity, and rice texture are the most important characteristics. Keywords : preferences, farmer, superior varietiesObjek yang dikaji dalam penilitian ini adalah preferensi petani terhadap karakter tanaman padi. Tempat penelitian dilaksanakan di 3 desa (Desa Ciganjeng, Desa Pamotan dan Desa Rawaapu). Desain penelitian menggunakan desain kuantitatif dengan pendekatan analisis data secara deskriptif. Metode yang diperunakan adalah survey untuk mengumpulkan data dengan mengedarkan kuisioner dan melakukan wawancara. Jumlah petani yang diwawancarai yaitu 64 orang. Hasil dari penelitian ini adalah petani lebih menyukai tanaman padi yang memiliki tinggi tanaman, panjang daun, lebar daun, permukaan daun, sudut daun dan tioe malai yang sedang, cabang malai sekunder yang banyak, ketegaran batang yang kuat, jumlah anakan yang banyak, umur yang genjah, ukuran gabah yang panjang dan lebar, aroma yang tidak wangi, serta tekstur nasi yang pulen. Petani beranggapan bahwa karakter permukaan daun merupakan karakter yang tidak penting; karakter tinggi tanaman, panjang daun, lebar daun, sudut daun, tipe malai, panjnag gabah, lebar gabah, dan aroma tergolong karakter cukup penting; karakter ketegaran batang, jumlah anakan, dan umur tanaman merupakan karekter yang penting; karakter ketahanan terhadap hama, ketahanan terhadap penyakit, ketahanan terhadap kekeringan, ketahanan terhadap genangan, ketahanan terhadap salinitas, produktivitas, dan karakter tekstur nasi merupakan karakter yang sangat penting.Kata kunci : preferensi, petani, varietas unggul