Articles

PERBAIKAN KUALITAS BUAH JAMBU BIJI (PSIDIUM GUAJAVA L.) KULTIVAR KRISTAL DENGAN BERBAGAI WARNA DAN BAHAN PEMBERONGSONG Romalasari, Atika; Susanto, Slamet; Melati, Maya; Junaedi, Ahmad
Jurnal Hortikultura Indonesia Vol. 8 No. 3 (2017): Jurnal Hortikultura Indonesia
Publisher : Indonesian Society for Horticulture / Department of Agronomy and Horticulture

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (164.451 KB) | DOI: 10.29244/jhi.8.3.155-161

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ABSTRACT Kristal guava is one of the popular guava cultivars nowadays. The guava has white flesh and not-perfectly-round shaped that resembles a crystal and seedless. However, during the growth period fruit undergoes several physical and chemical changes and susceptible to insect infestation and other damage, all of which can reduce their commercial value and thus cause significant yield and economic losses. The aim of this research was to evaluate the influence of different color and bagging materials on guava fruit development and quality. The research was conducted at farmer farm located in Cikarawang Dramaga, from November 2013 to April 2014. This research was arranged in a randomized block design with one factor, consisted of ten treatments and five replications. The treatments were red plastic, yellow plastic, green plastic, blue plastic, sponnet with red plastic, sponnet with yellow plastic, sponnet with green plastic, sponnet with blue plastic, sponnet with transparent plastic and unbagged. Fruit quality assesment was conducted in Postharvest Laboratory of Agronomy and Horticulture Department, Bogor Agricultural University and Center for Tropical Horticultural Studies. The result showed that bagging improved fruit size, external quality and accelerated fruit maturity. Sponnet with red plastic bagging resulted in the biggest fruit at harvest. Sponnet with yellow or with red plastic baggings were able to maintain fruit peel smoothness up to 85%. Sponnet and plastic bagging resulted in better external quality than bagging with plastic only. Bagging did not show any effect on internal fruit quality. Keywords: colored bag, guava cv. Kristal, soluble solids content, sponnet, titratable acidityABSTRAK Jambu ?Kristal? merupakan salah satu kultivar jambu biji yang sedang populer saat ini. Jambu Kristal memiliki daging buah berwarna putih, berbentuk bulat tidak beraturan serta berbiji sedikit. Selama pertumbuhan dan perkembangan buah mengalami berbagai perubahan fisik dan kimia dan rentan terhadap serangan hama, yang secara keseluruhan dapat mengurangi nilai komersial sehingga menyebabkan kehilangan yang signifikan dari segi hasil panen dan kerugian ekonomi. Tujuan dari penelitian ini adalah untuk menjelaskan pengaruh warna dan bahan pemberongsong terhadap perbaikan kualitas buah jambu ?Kristal?. Penelitian dilaksanakan pada November 2013 sampai April 2014, di kebun petani yang berlokasi di Cikarawang, Dramaga, Bogor. Penelitian menggunakan Rancangan Acak Kelompok dengan satu faktor yaitu pemberongsongan buah, dengan sepuluh taraf dan lima ulangan. Perlakuan pemberonsongan menggunakan plastik merah, plastik kuning, plastik hijau, plastik biru, sponnet dan plastik merah, sponnet dan plastik kuning, sponnet dan plastik hijau, sponnet dan plastik biru, sponnet dan plastik bening serta tanpa pemberongsong. Pengujian kualitas buah dilakukan di Laboratorium Pascapanen Departemen Agronomi dan Hortikultura, Fakultas Pertanian, Institut Pertanian Bogor dan Laboratorium Pusat Kajian Hortikultura Tropika (PKHT) IPB. Hasil penelitian menunjukkan bahwa pemberongsongan memperbaiki pertumbuhan, kualitas eksternal dan mempercepat pematangan buah. Pemberongsongan sponnet dan plastik merah menghasilkan buah dengan ukuran terbesar pada saat panen. Pemberongsongan menggunakan sponnet dengan plastik kuning atau merah mampu menjaga kemulusan buah hingga 85%. Pemberongsongan sponnet dan plastik menghasilkan kualitas eksternal yang cenderung lebih baik dibandingkan pemberongsongan hanya dengan plastik. Pembrongsongan tidak berpengaruh nyata terhadap kualitas internal buah.Kata kunci: asam tertitrasi total, jambu ?Kristal?, sponet, padatan terlarut total, pemberongsong berwarna
YIELD STABILITY AND ADAPTABILITY OF AROMATIC NEW PLANT TYPE (NPT) RICE LINES Lestari, Angelita Puji; Abdullah, Buang; Junaedi, Ahmad; Aswidinnoor, Hajrial
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 38 No. 3 (2010): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (120.637 KB) | DOI: 10.24831/jai.v38i3.14249

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Aromatic new plant type (NPT) rice lines were selected to obtain high yielding and aromatic lines. The objectives of the research were to study the yield stability and adaptability of 35 NPTrice lines across different environment, with Ciherang and Sintanur as check varieties. The lines planted at two locations, Bogor and Pusakanagara in two seasons (2009 dry and wet seasons, DS-WS). The experiment used randomized complete block design (RCBD), with three replications. The 21-day-old seedlings were planted with spacing of 20 cm x 20 cm, with a plot size of 2 m x 5 m. Yield stability and adaptability were estimated by using coeffi cient regression (bi) and general mean of yield by Finlay-Wilkinson method. Combined analysis of variance showed that lines (G), environment (E), and the G x E interaction were signifi cantly different. Lines showed different stability and adaptability . Several lines yielded higher than Ciherang variety . Nine lines were classifi edasstable and widely adapted at the marginal environment, i.e IPB 116-F-3-1, IPB 117-F-4-1, IPB-117-F-14-2, IPB-117-F-15-2, IPB-117-F-17-5, IPB 140-F-1-1, 140-F-IPB, 2-1, IPB 140-F-3, and IPB 149-F-2. Lines IPB 113-F-2, IPB 140-F-4, IPB 140-F-6, IPB 140-F-7, and B11738-MR-Si-1-2-1-2 were not stable and adapted only in optimum environmental condition (bi > 1) while IPB 116-F-46-1, IPB-117-F 17-4, IPB-117-F 18-3 and B11955-MR-84-1-4 has the value of bi < 1 or adaptable to marginal environments.Keywords: aromatic rice, NPT rice, yield stability
MANAJEMEN PEMANENAN KELAPA SAWIT (ELAEIS GUINEENSIS JACQ.) DI KEBUN RAMBUTAN, SERDANG BEDAGAI, SUMATERA UTARA Fackrurrozi, .; Junaedi, Ahmad; Derajat Matra , Deden
Buletin Agrohorti Vol. 7 No. 3 (2019): Buletin Agrohorti
Publisher : Departemen Agronomi dan Hortikultura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrob.v7i3.30259

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Teknik budidaya hidroponik merupakan salah satu cara untuk meningkatkan hasil dan kualitas tanaman tomat. Kegiatan magang di PT Amazing Farm dilakukan bulan Maret hingga Juli 2018. Tujuan umum dari kegiatan magang ini adalah untuk mempelajari dan meningkatkan kemampuan dalam aspek teknis dan aspek manajerial dalam budidaya sayuran, khususnya tanaman tomat. Tujuan khusus dari magang ini adalah untuk menentukan laju pertumbuhan dua varietas tomat berbeda yang ditanam di rumah kaca yang sama. Metode langsung diterapkan untuk mendapatkan data yang terkait dengan aspek teknis dan manajemen. Aspek teknis terdiri dari beberapa kegiatan yaitu: persiapan lahan, persiapan bahan tanam, persiapan penanaman dan penanaman, pemeliharaan, panen, dan pascapanen. Untuk mempelajari aspek manajerial, penulis telah aktif terlibat sebagai karyawan harian lepas, asisten mandor, dan pengawas. Metode tidak langsung dilakukan dengan mengumpulkan data sekunder dan data pendukung dari perusahaan seperti informasi umum perusahaan, arsip taman dan studi literatur. Secara umum, PT Agrikultura Amazing Farm telah menerapkan praktik pertanian yang baik. Uji coba melibatkan dua varietas yaitu varietas umagna dan levanso. Percobaan dilakukan dengan 3 ulangan dan unit pengamatan terdiri dari 5 sampel tanaman. Praktek budidaya yang diberikan terdiri dari penyiraman tanaman sebanyak 5 kali setiap hari dengan dosis setiap penyiraman pada 1 - 2 MST dengan larutan nutrisi 100 ml AB mix dan kadar EC 2 ms / cm, pada 3 - 4 MST dengan 150 ml AB mix dan kadar EC 2 ms / cm, pada 5 -7 MST dengan 200 ml AB mix dan kadar EC2,2 ms / cm, dan pada 8-24 MST dengan 300 ml AB mix dengan kadar EC 2,2 ms / cm. Hasil menunjukkan bahwa teknik budidaya tunggal dapat diterapkan untuk dua varietas yang berbeda dan menghasilkan hasil yang sama baiknya.
GROWTH PERFORMANCE OF THREE NATIVE TREE SPECIES FOR PULPWOOD PLANTATION IN DRAINED PEATLAND OF PELALAWAN DISTRICT, RIAU Junaedi, Ahmad
Indonesian Journal of Forestry Research Vol 5, No 2 (2018): Indonesian Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2018.5.2.119-132

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The productivity of exotic species developed in pulpwood plantations in Indonesia (HTI-pulp) has been continuously decreasing.  On the other side, there is a possibility to develop several promising native tree species in peatland HTI-pulp plantations. However, less information is available on the performance of those native tree species for planting in peatland pulpwood plantation. This study evaluates the performances (survival rate, growth and yield) of three native trees [mahang (Macaranga pruinosa), skubung (Macaranga gigantea) and geronggang (Cratoxylum arborescens)] in drained peatland, in terms of suitability for pulpwood plantation. An experiment plot was established by planting three native tree species and krasikarpa (Acacia crassicarpa) in drained peatland at Pelalawan District, Riau. Survival, growth and yield variables were monitored frequently until 5.5 years after planting (YAP) and then were analyzed. Geronggang (survival rate = 80.0%) and mahang (survival rate = 65.6%) showed good survival rates at 5.5 YAP which were significantly (p<0.05) higher than that of krassikarpa (22.4%). Geronggang and mahang are relatively promising growth and yield in which height, diameter and yield increment until 5.5 YAP were 1.96 m/year and 2.31 m/year; 2.08 cm/year and 2.59 cm/year; 13.1 m3/ha/year and 21.4 m3/ha/year, respectively. Yet, those growths and yields were still significantly (p<0.05) lower than those of krasikarpa, probably due to unequal  seedling quality. These results indicated the potential of mahang and geronggang to be developed in peatland pulpwood plantations. However, tree improvement program is necessarily required for mahang and geronggang to initiate the development.
Evaluation of Growth and Physiological Responses of Three Rice (Oryza sativa L.) Varieties to Elevated Temperatures Kurniawan, Dede Yudo; Junaedi, Ahmad; Lubis, Iskandar; Sunarti, Titi Candra
Journal of Tropical Crop Science Vol 6 No 01 (2019): Journal of Tropical Crop Science
Publisher : Journal of Tropical Crop Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (358.944 KB)

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Temperature is a primary factor that affects the rate of plant development and has great impacts on plant growth, metabolism, and yield. A study was conducted to analyze the effects of elevated temperature on rice morphological and the physiological growth. The research was arranged in a nested randomized block design consisting of two factors, temperatures and rice varieties. Elevated temperatures were provided through the uses of different materials of plastic roof and walls to have an average and maximum temperature of 27.6 °C and 41.6 °C (T1); 28.1°C and 43.8 °C (T2), and 29.5°C and 47.1 C (T3), respectively. The study used three varieties of rice, “Ciasem”, “Ciherang”, and “IR64”. All rice varieties showed signifi cant increases in tiller number per hill and shoot dry weight, but had a decrease in the stomatal conductance, transpiration rate, and SPAD values at grain fi lling stage with the increasing temperatures. The number of tiller per hill increased when temperature was elevated from 27.6 to 28.1 and 29.5°C by about 29.9 and 21.3%, respectively.
MANAJEMEN PANEN KELAPA SAWIT (ELAEIS GUINEENSIS JACQ.) BERDASARKAN KRITERIA ISPO DAN RSPO DI KEBUN SEI BATANG ULAK, KABUPATEN KAMPAR, RIAU Harahap, Yuanda Pangi; Junaedi, Ahmad
Buletin Agrohorti Vol. 5 No. 2 (2017): Buletin Agrohorti
Publisher : Departemen Agronomi dan Hortikultura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (688.7 KB) | DOI: 10.29244/agrob.v5i2.16796

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Kegiatan penelitian yang dilaksanakan di kebun Sei Batang Ulak (SBU), PT.Ciliandra Perkasa ini bertujuan untuk mempelajari aspek teknis dan manajerial dalam Pengelolaan perkebunan kelapa sawit, dan secara khusus mempelajari aspek pemanenan kelapa sawit. Aspek khusus pemanenan dipelajari dengan cara ikut melaksanakan kegiatan panen dan melaksanakan pengamatan pada beberapa komponen panen di kebun untuk mengetahui keefektifan dan keefisienan kegaitan panen di kebun SBU. Pengamatan yang dilakukan menunjukkan bahwa manajemen panen yang sudah ada cukup baik, akan tetapi perlu ditingkatkan agar didapatkan produksi tandan buah segar (TBS) yang optimal. Beberapa hal yang perlu dievaluasi meliputi tenaga kerja panen yang masih kurang, penggunaan alat pelindung diri yang masih minim, target panen yang belum terpenuhi, dan mutu buah yang kurang baik. Berdasarkan hasil pengamatan juga menunjukkan bahwa aspek  panen  belum  sesuai  dengan  prinsip  Indonesian  Sustainable  Palm  Oil (ISPO)  dan  Roundtable Sustainable Palm Oil (RSPO). Belum diterapkannya kriteria ISPO dan RSPO ditunjukkan dari kurangnya sosialisasi dan mewajibkan kepada tenaga kerja untuk menggunakan alat pelindung diri ketika bekerja, membawa anak-anak pada saat kerja di lapangan. Oleh karena itu, kebun SBU belum mendapat sertifikasi ISPO maupun RSPO.
PERFORMANCE OF GRAIN QUALITY AND AROMA OF AROMATIC NEW PLANT TYPE PROMISING RICE LINES Lestari, Angelita Puji; Abdullah, Buang; Junaedi, Ahmad; Aswidinnoor, Hajrial
Indonesian Journal of Agricultural Science Vol 12, No 2 (2011): October 2011
Publisher : Indonesian Agency for Agricultural Research and Development - MOA

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

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Grain quality and aroma are important characteristics of rice that affect consumer acceptance. This research was conducted to study the grain quality and aroma of aromatic new plant type (NPT) promising rice lines. Thirty five lines as well as Ciherang and Sintanur varieties were planted at Bogor and Pusakanagara, West Java in the dry season (DS) 2009 and wet season (WS) 2009. Three methods, i.e. leaf aroma tested with KOH, rice aroma tested in the test tube, and cooked rice aroma test, were used to evaluate the aroma of the lines. The results showed that line B11742-RS*2-3-MR-34-1-2-1 was aromatic identified using different methods. The line had long, slender, and small chalkiness grains, high percentage of head rice, high amylose, and hard texture. Lines IPB 140-F-6, B11249-9C-PN-3-3-2-2-MR-1, and B11955-MR-84-1-4 also had a high aroma score and grain yield. Testing leaf aroma with KOH can be used as early selection method in breeding program for aromatic lines. Lines derived from aromatic parents from highlands of South Sulawesi did not show consistent aroma under three testing methods. Those tested lines had good grain quality, both physical and cooked rice quality.
MANAJEMEN PENGENDALIAN GULMA KELAPA SAWIT BERDASARKAN KRITERIA ISPO DAN RSPO DI KEBUN RAMBUTAN SUMATERA UTARA Sormin, Fernando; Junaedi, Ahmad
Buletin Agrohorti Vol. 5 No. 1 (2017): Buletin Agrohorti
Publisher : Departemen Agronomi dan Hortikultura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (403.277 KB) | DOI: 10.29244/agrob.v5i1.15902

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Penelitian ini dilaksanakan di kebun Rambutan Sumatera Utara dari Februari sampai Juni 2016. Tujuan kegiatan ini adalah menambah pemahaman, meningkatkan keterampilan dan kemampuan bekerja secara langsung mengenai budidaya kelapa sawit khususnya pada pengendalian gulma kelapa sawit. Pengamatan yang dilakukan meliputi gulma dominan di piringan dan pasar pikul dengan parameter pengamatan yang terdiri atas spesies, frekuensi, kerapatan dan bobot kering. Pengamatan lain adalah pengkajian kinerja pengendalian gulma berdasarkan kriteria ISPO dan RSPO. Data gulma dominan dianalisis dengan menggunakan analisis nisbah jumlah dominansi (NJD), sedangkan pengamatan lain dianalisis secara deskriptif. Gulma pada piringan dan pasar pikul di kebun Rambutan adalah Melastoma malabathricum, Ottochloa nodosa, Colocasia sp., Clidemia hirta dan Displazium esculentum. Pengendalian gulma yang dilakukan secara terpadu yaitu manual, kimiawi, kultur teknis, hayati dan mekanis. Pengendalian gulma dikelola sesuai dengan ketentuan dan kriteria ISPO dan RSPO tentang pemeliharaan kelapa sawit.
PEREMAJAAN KELAPA SAWIT (ELAEIS GUINEENSIS JACQ.) DI SERUYAN ESTATE, MINAMAS PLANTATION GROUP, SERUYAN, KALIMANTAN TENGAH Wibowo, Wisnu Hari; Junaedi, Ahmad
Buletin Agrohorti Vol. 5 No. 1 (2017): Buletin Agrohorti
Publisher : Departemen Agronomi dan Hortikultura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (589.002 KB) | DOI: 10.29244/agrob.v5i1.15899

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Kegiatan penelitian ini dilaksanakan di Seruyan Estate dari Februari hingga Juni 2016. Kegiatan magang ini bertujuan untuk mempelajari aspek teknis dan manajerial peremajaan kelapa sawit dan menganalisis kesesuaiannya dengan kriteria RSPO dan ISPO saat kegiatan replanting. Pengamatan yang dilakukan meliputi tahap-tahap peremajaan yang tepat berdasarkan standar yang telah ditetapkan perusahaan, prestasi kerja alat, dan prestasi kerja karyawan. Hasil pengamatan tersebut kemudian dianalisis secara deskriptif berdasarkan standar yang berlaku pada kegiatan peremajaan. Hasil pengamatan menunjukkan bahwa tahap peremajaan dibagi menjadi dua tahap, yaitu tahap persiapan lahan yang meliputi sensus pokok, pancang rumpuk, penumbangan, pencincangan, merumpuk pokok, deboling, tutup lubang deboling, pembuatan jalan kontur; dan tahap penanaman yang meliputi pemancangan titik tanam, penanaman kacangan penutup tanah, pembuatan lubang tanam, dan penanaman tanaman kelapa sawit. Seruyan Estate telah memenuhi kriteria RSPO dan ISPO dikarenakan adanya kewajiban mengelola area Nilai Konservasi Tinggi di dalam kebun. Selain itu, kegiatan peremajaan di Seruyan Estate juga tidak menggunakan api saat melakukan persiapan lahan.
PERAN BAKTERI PENAMBAT NITROGEN UNTUK MENGURANGI DOSIS PUPUK NITROGEN ANORGANIK PADA PADI SAWAH Widiyawati, Ida; ,, Sugiyanta; Junaedi, Ahmad; Widyastuti, Rahayu
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 42 No. 2 (2014): Jurnal agronomi indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (381.112 KB) | DOI: 10.24831/jai.v42i2.8424

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ABSTRACTThe availability of nitrogen in soil is one of the limiting factors to support growth and rice productivity. Nitrogen-fixing bacteria have ability to utilize air nitrogen so it becomes available in the soil. The use of nitrogen-fixing bacteria could potentially reduce application of nitrogen fertilizer. The aim of the experiment was to determine the role of nitrogen-fixing bacteria in reducing inorganic N fertilizer on lowland rice. The research was conducted in April-August 2012 at the plastic house of Babakan Sawah Baru Experimental Station, IPB. The experiment was arranged in randomized block design with two factors, namely nitrogen fertilizer and type of bacteria. The dosage of N fertilizer (urea), i.e. 0, 50, 75 and 100 kg N ha-1. The types of bacteria, i.e. without bacteria, Azotobacter-like, Azospirillum-like, and consortium. The result of the experiment showed that N fertilization significantly affected to all variables except the percentage of empty grains per panicle, 1,000 grain weight, and N content of plant. The types of bacteria significantly affected to root dry weight, number of filled grain per panicle, greenness of leaf, uptake and content of nitrogen (shoot and grain), grain weight per plot. Consortium of bacteria were capable to reduce 25% the use of inorganic N fertilizer from recommendation doses (100 kg N ha-1) that based on the value of agronomic effectiveness.Keywords: Azospirillum-like, Azotobacter-like, consortium of bacteria