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Pemanfaatan Residu Biomulsa Arachis pintoi dan Legum Lainnya pada Pola Tanam Rotasi Jagung-Tomat Fathurrahman Aziz Munawir; M. A. Chozin
Buletin Agrohorti Vol. 3 No. 1 (2015): Buletin Agrohorti
Publisher : Departemen Agronomi dan Hortikultura

Tujuan dari penelitian ini adalah untuk membandingkan pengaruh residu biomulsa Arachis pintoi dengan residu biomulsa lainnya pada budidaya tanaman tomat dengan pola tanam rotasi jagung-tomat. Percobaan ini dilaksanakan di Kebun Percobaan Cikabayan, Dramaga, Bogor pada bulan November 2014 sampai April 2015. Percobaan ini menggunakan rancangan kelompok lengkap teracak (RKLT) satu faktor yaitu residu jenis biomulsa dengan 6 taraf perlakuan dan 3 ulangan pada tanaman tomat varietas Permata F1. Hasil penelitian menunjukkan bahwa residu biomulsa meningkatkan status hara tanah, diameter batang, komponen hasil, produksi tomat, dan mempengaruhi pergeseran jenis gulma. Secara umum residu biomulsa Arachis pintoi dapat meningkatkan status hara tanah dan produksi tomat yang cenderung lebih baik daripada residubiomulsa legum lainnya.

Pengaruh Reduksi Pupuk NPK serta Aplikasi Pupuk Organik dan Hayati terhadap Pertumbuhan, Produksi dan Mutu Hasil Padi Sawah (Oryza sativa L.) Atikah Dyah Perwita; M. A. Chozin; . Sugiyanta
Buletin Agrohorti Vol. 5 No. 3 (2017): Buletin Agrohorti
Publisher : Departemen Agronomi dan Hortikultura

Tujuan dari penelitian ini adalah untuk mengetahui pengaruh pengurangan dan penerapan pupuk NPK dan pupuk bio-organik terhadap pertumbuhan, produksi dan kualitas hasil padi. Penelitian dilakukan di Karawang, Jawa Barat pada bulan Oktober 2010 sampai April 2011. Varietas padi yang digunakan adalah Ciherang. Rancangan percobaan yang digunakan Kelompok Lengkap terdiri dari 13 perlakuan. Perlakuan terdiri dari: P1 = jerami + ½ dosis NPK, P2 = jerami + ½ dosis NPK + Pupuk Granule Organik + Pupuk Organik Cair, P3 = jerami + ½ dosis pupuk NPK + Granule Pupuk Organik, P4 = jerami + ½ dosis NPK + Granule Pupuk Organik + Biofertilizer 1, P5 = jerami + ¾ dosis NPK + biofertilizer 2, P6 = jerami + ½ dosis NPK + kotoran, P7 = jerami + ½ dosis NPK + biofertilizer 1, P8 = jerami + ½ dosis NPK + biofertilizer 2, P9 = sedotan + 1 dosis NPK, P10 = 1 dosis NPK, P11 = jerami + ½ dosis NPK + biofertilizer 3, P12 = ½ dosis NPK + biofertilizer 3, P13 = tanpa pupuk. Pengamatan meliputi komponen pertumbuhan vegetatif, panen dan kualitas beras. Aplikasi kombinasi pupuk memiliki pengaruh yang nyata terhadap jumlah anak anjing, berat butir per bukit, dan tingkat butir kotor. Hasil penelitian menunjukkan bahwa penerapan pupuk organik dan pupuk hayati dapat mengurangi penggunaan NPK tanpa mengurangi produksi. Hasil biji tidak berbeda nyata di antara semua perlakuan.

Keefektifan Konsentrasi dan Jenis Pelarut Tepung Umbi Teki (Cyperus rotundus L.) sebagai Bioherbisida Pratumbuh untuk Pengendalian Gulma Asystasia gangetica (L.) T. Anderson Dyana Chairannisa; M. A. Chozin
Buletin Agrohorti Vol. 6 No. 2 (2018): Buletin Agrohorti
Publisher : Departemen Agronomi dan Hortikultura

Cyperus rotundus merupakan salah satu jenis gulma yang berpotensi untuk digunakan sebagai bioherbisida pratumbuh. Kandungan metabolit gulma teki Cyperus rotundus terbanyak terdapat pada bagian umbi. Penelitian ini bertujuan mengetahui keefektifan umbi teki (Cyperus rotundus) sebagai bioherbisida dalam menekan perkecambahan gulma Asystasia gangetica dan mengetahui jenis pelarut dan konsentrasi yang tepat dalam menekan perkecambahan biji gulma Asystasia gangetica. Penelitian ini dilaksanakan pada bulan Mei hingga November 2016. Penelitian ini terdiri dari 2 percobaan. Percobaan pertama merupakan pengujian ekstrak tepung umbi Cyperus rotundus terhadap perkecambahan gulma Asystasia gangetica dengan menggunakan metode uji di atas kertas. Percobaan kedua merupakan pengujian ekstrak tepung umbi teki Cyperus rotundus terhadap perkecambahan gulma Asystasia gangetica menggunakan media tanah. Percobaan pertama dan kedua menggunakan Rancangan Acak Lengkap Faktorial. Perlakuan terdiri jenis pelarut metanol dan aquades, dan konsentrasi 50 g L-1, 100 g L-1, 150 g L-1, 200 g L-1, 250 g L-1 dengan 3 ulangan. Hasil penelitian menunjukkan bahwa tepung umbi teki Cyperus rotundus mampu menekan perkecambahan gulma Asystasia gangetica pada media kertas. Hasil percobaan ini menunjukkan kecenderungan makin tinggi konsentrasi makin menekan perkecambahan gulma Asystasia gangetica pada media kertas. Kedua jenis pelarut menunjukkan keefektifan yang sama dalam menekan perkecambahan pada media kertas. Tepung umbi teki yang diberikan belum efektif dalam menekan perkecambahan gulma Asystasia gangetica pada media tanah.

Penggunaan Kacang Hias (Arachis pintoi) sebagai Biomulsa pada Budidaya Tanaman Tomat (Lycopersicon esculentum M.) M. A. Chozin; uang G. Kartika; Raisa Baharudin
Jurnal Hortikultura Indonesia Vol. 5 No. 3 (2014): Jurnal Hortikultura Indonesia
Publisher : Indonesian Society for Horticulture / Department of Agronomy and Horticulture

ABSTRACTThe objective of this study was to determine the effect of Arachis pintoi planting as bio-mulch on growth and yield of tomato and weed growth. An experiment was conducted at Cikabayan, University Farm of IPB, from January to June 2010. The research was arranged in a randomized Complete Block Design with 3 replications. The results of this study showed the g rowth and speed of coverage of A. pintoi in this experiment was relatively slow. The use of mulch improved the growth, yield components and production of tomatoes. The best mulch was a plastic mulch. The best planting period of A. pintoi as bio-mulch was 7 and 10 weeks before planting.Key words: bio- mulch, growth, silver black plastic mulch, yield ABSTRAKPenelitian ini bertujuan untuk mengetahui pengaruh penanaman Arachis pintoi sebagai biomulsa dalam menghambat pertumbuhan gulma dan meningkatkan pertumbuhan dan produksi tanaman tomat. Penelitian dilaksanakan di kebun percobaan Cikabayan- UF IPB, Darmaga Bogor dari Januari sampai Juni 2010. Percobaan menggunakan Rancangan Kelompok Lengkap Teracak (RKLT) faktor tunggal, yaitu dengan 4 perlakuan waktu tanam A. pintoi dan 2 pembanding: M0 (m onokultur tanaman tomat tanpa mulsa), M1 (monukultur tanaman tomat dengan mulsa plastik hitam perak), M 2 ( 10 minggu A. pintoisebelum tomat ditanam), M3 (7 minggu A. pintoi sebelum tomat ditanam), M4 ( 4 minggu A. pintoi sebelumtomat ditanam), dan M5 ( 1 minggu A. pintoi sebelum tomat ditanam ). Hasil percobaan menunjukkan bahwa persentase tumbuh dan kecepatan penutupan A. pintoi relatif lambat. Tanaman tomat yang ditanam dengan biomulsa A. pintoi 10 dan 7 minggu sebelum tanam menunjukkan persentase tumbuh dan pertumbuhan yang lebih baik dibandingkan perlakuan mulsa plastik hitam perak (MPHP) maupun perlakuan tanpa mulsa. Perlakuan biomulsa A. pintoi 10 dan 7 minggu sebelum tanam (MSbT) serta perlakuan mulsa plastik hitam perak (MPHP) meningkatkan komponen pertumbuhan dan produksi buah tomat.Kata kunci: biomulsa, pertumbuhan, mulsa plastik hitam perak, produksi

Rancangbangun Aplikator Kompos untuk Tebu Lahan Kering Iqbal .; Tineke Mandang; E. Namaken Sembiring; M. A. Chozin
Jurnal Keteknikan Pertanian Vol. 2 No. 1 (2014): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.02.1.%p

AbstractThe widely sugarcane plantation area in Indonesia causes the management of sugarcane litter conducted by mechanization. To manage sugarcane litter into compost needed several machineries such as tractors,trash rakes, trailesr, choppers, trucks, composting turner, loaders, and compost applicators. The objective of this study was to design a compost applicator for sugarcane litter that can be used for a plant cane andratoon in dry land. The process of making a prototype applicators follow the design flowchart that begins with the calculation of the dimensions, design of engineering drawings, selection and material purchases. The result showed that the applicator prototype with belt conveyor metering device could function well and was able to apply the compost with a high dose (15 ton / ha).Keywords: mechanization, compost applicator, compost, sugarcane litter, sugarcaneAbstrakAreal perkebunan tebu di Indonesia yang luas menyebabkan kegiatan pengelolaan serasah tebu dilakukan dengan mekanisasi. Untuk mengelola serasah tebu menjadi kompos dibutuhkan beberapateknologi seperti traktor, trash rake, trailer, alat pencacah, truk, pengaduk, loader, dan aplikator kompos. Tujuan penelitian ini adalah merancang aplikator kompos serasah tebu yang dapat dioperasikan untuktanaman tebu baru (PC) dan tebu keprasan (ratoon) lahan kering. Proses pembuatan prototipe aplikator mengikuti alur perancangan alat yang diawali dengan perhitungan dimensi, disain gambar teknik dan pemilihan serta pembelian bahan. Hasil penelitian menunjukkan bahwa prototipe aplikator dengan penjatah tipe belt conveyor dapat berfungsi dengan baik dan mampu mengaplikasikan kompos dengan dosis tinggi (15 ton/ha).Kata kunci : mekanisasi,aplikator kompos, kompos, tebu, lahan keringDiterima: 27 November 2013; Disetujui: 19 Februari 2014

KERAGAMAN VERTIKAL PEKARANGAN DI DISTRIK ARGUNI BAWAH KAIMANA PROVINSI PAPUA BARAT Alfred Alfonso Antoh; Nurhayati HS Arifin; M. A. Chozin; HadiSusilo Arifin
NOVAE GUINEA Jurnal Biologi Vol. 7 No. 1 (2016)
Publisher : Universitas Cenderawasih

Show Abstract | Download Original | Original Source | Check in Google Scholar

Penelitian ini bertujuan untuk mengetahui luas, bentuk dan keragaman vertikal pekarangan guna meningkatkan peran dan fungsi bagi terpenuhinya kebutuhan masyarakat secara langsung dan tidak langsung guna memenuhi aspek keberlanjutan di Distrik Arguni Bawah Kabupaten Kaimana Provinsi Barat. Metode dalam peneltian adalah praktek agroforestri dengan mengukur luas pengukuran setiap kampung kampung sampel dimana 3 sampel rumah diambil dari 15 kampung yang tersebar di Distrik Arguni Bawah. Penelitian ini juga menginventarisasi jumlah dan jenis tanaman pekarangan masyarakat berdasarkan stratifikasi tanaman (ketinggian tanaman dan diameternya). Hasil penelitian menunjukan bahwa Sekitar 12 kampung dari 15 kampung sampel memiliki luas pekarangan besar (400-800 mÂ²) dan lainnya 2 kampung dengan luas pekarangan sangat luas serta 1 kampung luas pekarangan sedang. Lebih dominan jenis tanaman jenis herba atau rumput-rumputan sekitar 109 tanaman yang ditemukan di sekitar 15 kampung sampel adalah tanaman jenis bunga dan rempah-rempah atau tanaman obat. Kesimpulan mayoritas kampung dengan ukuran luas besar dan sangat didominansi oleh jenis tanaman herba.Â Kata kunci: Luas Pekarangan, Keragaman vertikal, Arguni Bawah

Pemanfaatan Cendawan Mikoriza Arbuskula dan Bakteri Azospirillum sp. untuk Meningkatkan Efisiensi Pemupukan pada Turfgrass Dwi Guntoro; M. A. Chozin; Budi Tjahjono; Irdika Mansur
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 34 No. 1 (2006): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Introduction turfgrass varieties require fertilization with high dosage, but it can contaminate environment. The increasing efficiency of fertilizer absorbtion was expected to reduce fertilizer requirement. The experiment was conducted to study the effect of arbuscular mycorrhizae and Azospirillum sp. on nutrient uptake, fertilization efficiency, growth and visual quality of turfgrass. The experiment consisted of two factors, i.e. the dosages of fertilizer and inoculant types. The dosages of fertilizer were the relatif dosage from recommended dosage (RD) i.e 100%RD, 75%RD, 50%RD, and 25%RD. The recommended dosage was 0.5 kg N + 1.5 kg P2O5 + 0.5 kg K2O per 100 m2/month by compound fertilizer (15-15-15). The treatment of 100%RD without inoculant was used as control. The inoculant types were no inoculant, arbuscular mycorrhizal fungi (AMF), Azospirillum sp., and AMF+Azospirillum sp. Factorial experiment was arranged in Randomized Block Design with three replications. The results showed that interaction between inoculant type and dosage of fertilizer affected nutrient uptake, fertilizer efficiency, growth, and visual quality. AMF inoculation and 25%RD increased shoot N uptake and N fertilizer efficiency, compared with control. Azospirillum sp. inoculation at 75% RD increased shoot N concentration, but did not affect on shoot N uptake and N fertilizer efficiency compared with control. Inoculant did not affect shoot P concentration, shoot P uptake, and P fertilizer efficiency. Azospirillum and AMF+Azospirillum inoculation increased shoot K concentration. AMF+Azospirillum inoculation and 100%RD increased shoot N concentration and shoot N uptake, compared with control. Key words : Arbuscular mycorrhizal fungi, Azospirillum, fertilizer efficiency, nutrient uptake, turfgrass.

Evaluasi Pertumbuhan dan Produksi Padi Gogo Haploid Ganda Toleran Naungan dalam Sistem Tumpang sari Priatna Sasmita; Bambang S. Purwoko; S. Sujiprihati; I. Hanarida; I. S. Dewi; M. A. Chozin
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 34 No. 2 (2006): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Three doubled haploid (DH) upland rice lines obtained from anther culture having good agronomic and shade tolerant traits were planted in an intercropping with maize. Their monoculture systems were also included. Those lines were GI-8, IG-19, and IW-56. Jatiluhur was also treated similar as shade tolerant control cultivar. The experiment was arranged in randomized complete block design with three replications. The treatments consisted of eight intercropping systems, four monoculture systems of rice, and two monoculture systems of maize. The result showed that all of tested DH lines were consistently shade tolerant under intercropping condition. The characteristics was represented by similar growth and grain yield with Jatiluhur under intercroping system. The highest grain yield was 2.49 t/ha resulted by GI-8 and IG-19 lines at the time that Jatiluhur was 2.36 t/ha. The intercropping of DH lines with maize also showed the Land Equivalent Ratio (LER) =1.33-1.58, while Jatiluhur LER = 1.25-1.28, indicating that agronomically they were more advantageous than those in the monoculture system. Key words : Doubled haploid,, intercropping system, shade tolerant lines

Penapisan Galur Haploid Ganda Padi Gogo Hasil Kultur Antera untuk Toleransi terhadap Cekaman Aluminium , Bakhtiar; Bambang S. Purwoko; , Trikoesoemaningtyas; M. A. Chozin
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 35 No. 1 (2007): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Aluminum (Al) toxicity is one of the most important yield-limiting factors for upland rice grown on acid soils. Since many small farmers may have difficulty in soil liming, the genotypes tolerant to soil acidity and aluminum toxicity should be developed. Anther culture can substantially speed up new variety development through recombination of parental characters in early generations and immediately homozygous lines were upon chromosome doubling. The Doubled haploid (DH) rice lines were screened under both nutrient solution containing either 0 or 45 ppm Al and acid soils containing either low or high-Al saturation. The relative root length (RRL) was determined at 14-day-old stage to characterize genotypes for Al-tolerance in nutrient solution. The relative grain weight (RGW) was determined to characterize genotypes for Al-tolerance in soils conditions. The results of this study indicated that Al reduced root elongation. The differential tolerance for Al among genotypes was found to be highly significant for RRL. Of the 120 genotypes tested, 16, 77 and 27 genotypes were found to be Al-tolerance, moderate and sensitive in term of RRL respectively. KRGM4, JTGR13, JTGR17, JTGR18, JTKR1, JTKR5, GRGM4, GRGM6, GRGM9, GRGM14, GRGM25, GRJT11 and SGJT27 lines were consitently Al-tolerance under both nutrient solution and acid soils. The RRL of doubled haploid upland rice lines in nutrient solutions were strongly correlated with RGW in acid soils. Key words: Rice, doubled haploid, aluminum tolerance, relative root length, relative grain weight

Studi Serapan Hara N, P, K dan Potensi Hasil Lima Varietas Padi Sawah (Oryza sativa L.) pada Pemupukan Anorganik dan Organik , Sugiyanta; Fred Rumawas; M. A. Chozin; Wahju Qamara Mugnisyah; Munif Ghulamahdi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 36 No. 3 (2008): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The objective of the research was to study the nutrition uptake (nitrogen, phosphorus, and potassium,) and the grain production of five rice varieties representing modern, new plant type and local varieties under application of inorganic, organic and combined inorganic-organic fertilization. Five rice varieties were Way Apoburu and IR-64 (modern varieties), Midun and Sarinah (local varieties from Sukabumi and Garut, respectively), and Fatmawati (new plant type variety). Five fertilizer treatments were (1) full recommendation dosage of inorganic fertilizer (250 kg urea/ha, 100 kg SP-36/ha, and 100 kg KCl/ha), (2) ¼ recommendation dose of inorganic fertilizer + rice straw, (3) ½ recommended dose of inorganic fertilizer + rice straw, (4) rice straw, and (5) green manure from Crotalaria juncea biomass. The results showed that there was no specific response of rice varieties to the fertilization treatments, even though there was specific nutrient uptake pattern and yield of each variety, and there was significant effect of fertilizer treatment to nutrient uptake and rice yield. Nutrient uptake and grain yield indicated that nutrient imobilisation occurred at 1stseason, however the availability of N, P, K nutrients increased at 2nd and 3rdseason on rice straw and green manure treatments. Rice straw application caused lower nutrient uptake and grain yield than full dosage inorganic fertilizer at 1st season but both were not significantly different at 2nd and 3rdseason. Application of rice straw with ½ dosage of inorganic fertilizers was not significantly different from full dosage of inorganic fertilizers in nutrient uptake and grain yield. Modern varieties showed higher level of N absorption than that of new type variety although it was not significantly different with that of local varieties, whereas the P and K uptake of modern varieties was lower than that of local and new plant type varieties. The modern varieties also showed higher level of dry grain per hill than that of local and new plant type varieties. However yield per ha of all varieties tended to be similar. Key words: uptake, efficiency, mineral nutrition, variety, lowland rice

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