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All Journal HAYATI Journal of Biosciences Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Buletin Agrohorti Jurnal Silvikultur Tropika (JST) Jurnal Hortikultura Pelita Perkebunan Planta Tropika Journal of Tropical Crop Science

Ade Wachjar

Departemen Agronomi Dan Hortikultura, Fakultas Pertanian, Institut Pertanian Bogor (Bogor Agricultural University), Jl. Meranti Kampus IPB Darmaga, Bogor 16680, Indonesia

Author-ID : 410379

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Economics, Econometrics & Finance Energy Environmental Science Social Sciences

Published : 33 Documents Claim Missing Document

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Humic Acid and Biofertilizer Applications Enhanced Pod and Cocoa Bean Production during the Dry Season at Kaliwining Plantation, Jember, East Java, Indonesia Rohman, Fadil; Wachjar, Ade; Santosa, Edi; Abdoellah, Soetanto
Journal of Tropical Crop Science Vol 6 No 03 (2019): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Cocoa (Theobroma cacao L.) is an important crop in Indonesia, but many farmers still face problem in improving bean production. This research aimed to evaluate the effect of humic acid and biofertilizer applications on pod growth and yield of cocoa. The research was conducted at Kaliwining Plantation managed by Indonesian Coffee and Cocoa Research Institute at Jember District, East Java, Indonesia from June 2017 to February 2018. The experiment used mature tree of Sulawesi from one clone. Treatment used were humic acid at level of 0, 1000, 2000, 3000 and 4000 ppm in combination with biofertilizer at level of 0, 500, 1000, 1500 and 2000 ppm that were applied through soil and foliar respectively. Results of this experiment showed that there was an interaction between humic acid and biofertilizer on beans number per plant and photosynthesis rate. Plants treated with 1000 ppm humic acid produced the highest number of small cherelle. Biofertilizer applied at 1500 ppm increased cherelle number, healthy cherelle, number of young pods, number of harvested pods, bean weight per plant and bean yield. The combination of 1000 ppm humic acid and 1500 ppm biofertilizer increased bean production by 39.7%. The high bean production was in line with the high photosynthetic rate. Thus, humic acid and biofertilizer applications could be a way to increase cocoa bean production in this area.

Study of Intercropping System and In Situ Organic Matter Application on Coffee Agroforestry at Citarum Watershed, West Java, Indonesia Kusnendi, Faizal Shofwan; Supijatno, Supijatno; Wachjar, Ade; Hidayat, Yayat; Suseno, Sugeng Heri
Journal of Tropical Crop Science Vol 7 No 02 (2020): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Agroforestry-based coffee is one of the conservation efforts to restore the damages at the Citarum watershed. Planting annual crops between coffee rows could potentially contribute income for the growers during the immature non-productive coffee growth. The aims of the research is to study the effect of various types of agroforestry models in the upstream Citarum watershed on the growth of coffee, and growth and yields of the intercrops. The research was conducted in September 2018 to June 2019 at the upstream Citarum watershed of Tarumajaya Subdistrict Kertasari, Bandung Regency, West Java, Indonesia. The research was arranged with a randomized block design with two factors. The first factor was the cropping system, i.e. coffee monoculture, coffee and corn, coffee and sweet corn, coffee and red beans, and coffee and habanero chili. The second factor was organic matter application, i.e. with and without application of in situ organic matter. The results of the research showed that coffee intercropped with habanero with application of in situ organic matter had the best vegetative growth, indicated by taller plants, more leaves, increased leaf P and Mg levels, and the maximum income from the intercrop. Coffee intercropped with corn with application of in situ organic matter had a maximum corn production but had the lowest income. Therefore, the model of coffee intercropped with habanero chili with application of in situ organic matter was the best model from several intercropping systems tested.

Plant Growth Performance of Top Grafted Young Cacao at Various Elevations in Indonesia Poleuleng, Andi Besse; Agusta, Herdhata; Yahya, Sudirman; Wachjar, Ade; Tjoa, Aiyen
Journal of Tropical Crop Science Vol 7 No 02 (2020): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

The purpose of this study was to evaluate the plant growth performance of top grafted young cacao cultivated in various elevations. This research was conducted from January-August 2019 in South Sulawesi and Central Sulawesi. A total of 54 plants were taken randomly from 6 locations with 3 altitudes (<300, 300-600, >600 meter above sea level, as.). The results showed that there was not significant different of plant height, stem circle, crown circle, the number of primary branches, the number of flowers, the length of horizontal and vertical roots in response to different elevations. However, the height of primary stem and leaves number of cacao from <300 m asl was significantly greater than those from either 300-600 m asl or > 600 m asl. The largest crown portion of actual biomass was found in the branches, then followed by the leaves and stem. While the highest actual root biomass was found at 10-20 cm soil depth.

Mengatasi Cemaran Getah Kuning pada Buah Manggis (Garcinia mangostana) dengan Aplikasi Kalsium dan Teknologi Lubang Resapan Biopori Kurniadinata, Odit Ferry; Poerwanto, Roedhy; Efendi, Darda; Wachjar, Ade
Jurnal Hortikultura Vol 26, No 1 (2016): Juni 2016
Publisher : Indonesian Center for Horticulture Research and Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jhort.v26n1.2016.p59-66

[The Effect of Calcium and Bio-Pores Absorption Holes Technology to Reduce Yellow Sap Contamination in Mangosteen (Garcinia mangostana)]Cemaran getah kuning pada buah manggis akan menurunkan kualitas buah. Cemaran getah kuning terjadi pada saat getah mencemari permukaan kulit buah atau aril akibat pecahnya saluran getah kuning. Pecahnya saluran getah kuning berkaitan dengan keberadaan kalsium dalam pericarp buah. Penelitian ini bertujuan untuk (1) mendapatkan dosis dan sumber kalsium terbaik dan efisien dalam menurunkan cemaran getah kuning pada buah manggis, (2) mengetahui pengaruh lubang resapan biopori di dalam usaha mengatasi cemaran getah kuning pada buah manggis, dan (3) mengetahui kombinasi terbaik dari aplikasi kalsium dan lubang resapan biopori untuk meningkatkan serapan dan translokasi kalsium ke buah dan dapat menanggulangi cemaran getah kuning pada buah manggis. Hasil penelitian ini menunjukkan: (1) pemberian kalsium, baik bersumber dari dolomit maupun kalsit, mampu menurunkan cemaran getah kuning pada aril maupun kulit buah manggis, (2) berdasarkan efisiensi dan efektifitas maka dosis pupuk kalsium sebesar 1,6 kg kalsium kalsit/pohon/tahun menjadi dosis terbaik dalam mengatasi cemaran getah kuning, (3) teknologi lubang resapan biopori dapat meningkatkan pertumbuhan dan perkembangan akar muda yang selanjutnya dapat meningkatkan serapan kalsium dan menurunkan cemaran getah kuning setelah 2 tahun aplikasi, (4) kombinasi 1,6 kg kalsium kalsit/pohon/tahun dengan teknologi lubang resapan biopori (LRB) merupakan teknik yang efektif dan mampu meningkatkan persentase produksi buah manggis berkualitas bebas cemaran getah kuning.KeywordsGetah kuning; Manggis; Kalsium; Xylem; Pita kaspari; Biopori; AkarAbstractThe yellow sap contamination caused poor quality of mangosteen fruit. Yellow sap will be an issue when the sap is contaminating the surface of the fruit or aryl caused by the break of yellow sap channels. The break of yellow sap channel is associated with the low concentration of calcium in the fruit pericarp. The study was aimed to: (1) obtain the optimum dose and source of calcium, (2) determine the effect of biopore on efforts to increase the abundance of calcium uptake and translocation to the optimization of calcium in the mangosteen fruit, and (3) determine the best combination of application calcium and biopore to increase the uptake and translocation of calcium to fruit and can cope with yellow sap contamination in the mangosteen fruit. The results show that calcium sources, both of dolomite and calcite, are able to reduce contamination of yellow sap on aryl or mangosteen rind. Based on efficiency and effectiveness, 1.6 kg calcium calcite/tree/year is the best dose to reduce yellow sap contamination. Biopore affects the increase in calcium uptake into fruit pericarp tissues indirectly. The application of 1.6 kg calcium calcite/tree/year and biopore is an effective and easy to apply and is able to increase the percentage of the mangosteen fruit with yellow sap contaminant free.

Morpho-Agronomical Diversity of Forest Clove in Moluccas, Indonesia Asri Subkhan Mahulette; Hariyadi Hariyadi; Sudirman Yahya; Ade Wachjar; Ilyas Marzuki
HAYATI Journal of Biosciences Vol. 26 No. 4 (2019): October 2019
Publisher : Bogor Agricultural University, Indonesia

Forest clove (Zyzygium aromaticum) is a type of wild clove found in Moluccas. The increasing interest of farmers in cultivating this plant leads to complete their information of morpho-agronomical characteristics which could provide diversity reflecting morpho-agronomical their distribution areas. This study aimed to characterize the morpho-agronomical traits of Forest clove plants in Moluccas. By survey, Forest clove more than 15 year old tree totalling of 50 populations were observed their 54 morpho-agronomical characteristics in two areas (Ambon and Seram) from March to June 2018. Two aromatic cloves, namely Tuni and Zanzibar were used for comparative analysis. The results showed that Forest cloves had a similarity of 78% among the population and grouped into 3 groups with a morpho-agronomical variation of 22%. On the contrary, Forest cloves and comparators (Tuni and Zanzibar) had morpho-agronomical differences of 58%. Based on the main component analysis, there were 11 most influential characters of Forest cloves (leaf size index, leaf length, leaf width, leaf area, petiole length, flower length, diameter of flower tube, ripe flower weight, fruit length, fruit width, and fruit weight) which could be descriptors for this plant species.

Peningkatan Produktivitas dan Efisiensi Konsumsi Air Tanaman Bayam (Amaranthus tricolorL.) pada Teknik Hidroponik melalui Pengaturan Populasi Tanaman Ade Wachjar; Rizkiana Anggayuhlin
Buletin Agrohorti Vol. 1 No. 1 (2013): Januari 2013
Publisher : Departemen Agronomi dan Hortikultura

The purpose of the research was to study the effect of plant population on productivity and water consumption of amaranth in hydroponic technique. Research was conducted in Parung Farm, Bogor, from April to May 2011. The research used Nutrient Film Technique (NFT) hydroponic system that modificated with gravel as its planting medium. The research was arranged in Randomized Complete Block Design with one factor, i.e. , 1, 2, 3, or 4 seedling numbers per hole. The research was divided into two experiment. The first was experiment to study the effect of plant population on plant productivity, and the second was experiment to study the effect of plant population on water consumption of plant. The result showed that plant with one seedling in the planting hole gave the best response on growth of amaranth (plant height, leaves numbers), but for plant productivity, the best result was obtained from plant with three seedlings in the planting hole. Water consumption was highest in plants with one seed per planting hole. Apparently, the more the population, the less consumption of water is needed. This is due to poor root conditions in densely populated. Plant roots will adversely affect the absorption of water.Keywords : gravel, hydroponic kit, seedling numbers, the planting hole

Pengelolaan Pemangkasan Tanaman Kopi Arabika (Coffea arabica L.) di Kebun Blawan, Bondowoso, Jawa Timur Vinsensia Febrina Sianturi; Ade Wachjar
Buletin Agrohorti Vol. 4 No. 3 (2016): Buletin Agrohorti
Publisher : Departemen Agronomi dan Hortikultura

Kopi merupakan salah satu komoditas perkebunan yang memiliki nilai ekonomi yang cukup tinggi. Kegiatan magang bertujuan mempelajari teknik budidaya tanaman dan pengelolaan perkebunan kopi, mempelajari dan menganalisis permasalahan yang dihadapi di lapangan mengenai pengelolaan pemangkasan serta solusi mengatasinya. Pemangkasan bertujuan agar pohon tetap rendah sehingga mudah perawatannya, dan membentuk cabang-cabang produksi yang baru. Kegiatan magang dilaksanakan di Kebun Blawan, Bondowoso, Jawa Timur, mulai bulan Februari sampai dengan Juni 2014. Pengumpulan data primer diperoleh melalui pengamatan dan praktik kerja secara langsung meliputi kegiatan pemeliharaan tanaman yaitu pemangkasan lepas panen (pengamatan cabang-cabang tanaman, tinggi tanaman, jumlah tunas yang tumbuh), sedangkan data sekunder diperoleh melalui laporan manajemen perusahaan. Analisis data yang dilakukan secara deskriptif, rata-rata dan persentase. Pemangkasan yang dilakukan termasuk dalam kategori pemangkasan ringan. Tanaman kopi yang memiliki kondisi cabang yang merata dan seimbang sangat mempengaruhi hasil taksasi produksi. Banyak cabang harus dipangkas karena cabang-cabang yang sudah tua dan terserang penyakit. Setelah melakukan pemangkasan, tanaman menghasilkan tunas-tunas baru.

Pengelolaan Pemangkasan Teh (Camellia Sinensis (L.) O. Kuntze) Di Kabupaten Kendal, Jawa Tengah Ade Wachjar; . Supriadi
Buletin Agrohorti Vol. 3 No. 3 (2015): Buletin Agrohorti
Publisher : Departemen Agronomi dan Hortikultura

Penelitian ini dilakukan di Kendal, Jawa Tengah dari bulan Februari sampai Juni 2011. Kegiatan penelitian dilakukan dengan cara mengikuti semua kegiatan di kebun baik aspek teknis maupun aspek manajerial diantaranya menjadi seorang Karyawan Harian Lepas (KHL) selama satu bulan, pendamping mandor selama satu bulan, dan bekerja sebagai pendamping bagian kepala kebun selama dua bulan. Tujuan penelitian yaitu untuk mengembangkan pengetahuan, pengalaman kerja, dan pembelajaran terhadap aspek manajemen pemangkasan teh menurut aspek teknis dan manajerial. Pemangkasan merupakan kegiatan pemeliharaan untuk meremajakan tanaman teh untuk meningkatkan produksi pucuk. Kegiatan pemangkasan tanaman teh di Kendal, Jawa Tengah sudah cukup baik. Jenis pemangkasan yang dilaksanakan adalah pemangkasan produki setengah bersih,. Hasil pengamatan menunjukkan bahwa pemangkasan dilaksanakan dengan tinggi bidang petik 107 cm, diameter bidang petik 112 cm, tinggi pangkasan 61 cm dan diameter pangkas 60 cm, persentase pucuk burung telah mencapai 89 %. Meskipun ketentuan-ketentuan kebun mengenai pemangkasan tidak selalu dapat diterapkan secara menyeluruh dilapangan, tetapi pihak manajemen selalu mengusahakan agar pelaksanaan dilapangan mendekati standar operasional prosedur (SOP).

Manajemen Produksi Caisim Organik dengan Aspek Khusus Pemulsaan di Yayasan Bina Sarana Bakti, Cisarua, Bogor, Jawa Barat Delima Ragil Kartika; Anggi Nindita; Ade Wachjar
Buletin Agrohorti Vol. 7 No. 1 (2019): Buletin Agrohorti
Publisher : Departemen Agronomi dan Hortikultura

Caisim (Brassica juncea L.) merupakan salah satu jenis sayuran yang dikonsumsi untuk memenuhi kebuthan vitamin, mineral, serat, dan protein. Sayuran ini termasuk ke dalam sayuran yang paling sering dikonsumsi oleh masyarakat Indonesia. Budidaya caisim memerlukan teknik dan penanganan yang baik untuk mencukupi kuantitas maupun kualitasnya. Tujuan kegiatan penelitian adalah mempelajari dan mengetahui pengaruh pemulsaan terhadap produksi tanaman caisim secara organis di Yayasan Bina Sarana Bakti. Kegiatan penelitian dilaksanakan pada bulan Februari sampai dengan Juni 2017 di Yayasan Bina Sarana Bakti, Cisarua, Bogor, Jawa Barat. Data primer didapatkan melalui pengamatan peubah fase vegetatif meliputi tinggi tanaman, jumlah daun, panjang daun, dan lebar daun. Peubah yang diamati pada saat pasca panen meliputi bobot brangkasan, bobot akar, bobot per tanaman, jumlah daun rompesan, bobot daun rompesan, jumlah daun rusak mekanis, bobot daun rusak mekanis, jumlah daun rusak akibat OPT, bobot daun rusak akibat OPT, jumlah daun tua, bobot daun tua, dan populasi gulma yang diamati pada saat setelah panen terhadap sepuluh tanaman contoh pada masing-masing petak. Perlakuan pemberian mulsa Tithonia sp. cenderung menunjukkan hasil tertinggi dibandingkan dengan kontrol dan perlakuan mulsa lainnya terhadap peubah pada fase vegetatif. Pemberian mulsa baik mulsa rumput, mulsa gedebong pisang, maupun mulsa Tithonia sp., secara nyata mampu menekan populasi gulma dalam bedengan.

Pertumbuhan Bibit Cengkeh (Syzygium aromaticum (L.) Merr & Perr.) Zanzibar pada Berbagai Taraf Dosis Pupuk Majemuk NPK (15 : 15 : 15) dan Konsentrasi Auksin 2.4-D Wahyu Angga Direja; Ade Wachjar
Buletin Agrohorti Vol. 7 No. 2 (2019): Buletin Agrohorti
Publisher : Departemen Agronomi dan Hortikultura

Penelitian ini bertujuan untuk mencari kombinasi dosis pupuk NPK dan konsentrasi Auksin 2.4D yang optimum untuk pertumbuhan bibit cengkih. Penelitian dilakukan di Kebun Percobaan IPB, Cikabayan, Dramaga, Bogor, mulai bulan Oktober 2016 sampai Juni 2017. Rancangan percobaan yang digunakan adalah Rancangan Acak Kelompok (RAK). Perlakuan pertama adalah pemberian pupuk majemuk NPK (15:15:15) dengan empat taraf dosis yaitu 5 g per bibit (P0), 10 g per bibit (P1), 15 g per bibit (P2) dan 20 g per bibit (P3). Perlakuan kedua adalah pemberian Hydrasil dengan 4 taraf dosis yaitu 0 ml per liter air (Z0), 0.5 ml per liter air (Z1), 1 ml per liter air (Z2) dan 1.5 ml per liter air (Z3). Hasil penelitian menunjukkan pemberian Pupuk majemuk NPK cenderung berpengaruh nyata (Uji F pada α 0.1) terhadap rasio bobot akar, tetapi tidak memberikan pengaruh nyata pada peubah lainnya. Konsentrasi auksin memberikan pengaruh nyata terhadap tinggi tanaman pada 1 BST (Bulan Sesudah Perlakuan) dan cenderung berpengaruh nyata (Uji F pada α 0.1) terhadap tinggi bibit pada 4 dan 5 BSP, tetapi tidak memberikan pengaruh nyata terhadap peubah lainnya. Terdapat pengaruh nyata interaksi pupuk NPK dan auksin terhadap panjang akar dan cenderung berpengaruh nyata (Uji F pada α 0.1) terhadap Bobot Basah Tajuk. Tidak ditemukannya dosis optimum pada pupuk majemuk NPK untuk pertumbuhan bibit cengkih, tetapi terdapat konsentrasi optimum dalam pemberian auksin 2.4D yaitu sebesar 1.58 ml per liter air dalam pertumbuhan tinggi bibit cengkih.

Co-Authors , Supiyatno . Sobir . Supriadi . Supriadi, . Abdoellah, Soetanto Achirul Rahman Agung Wahyu Susilo Agung Wahyu Susilo Agung Wahyu Susuilo AHMAD JUNAEDI Aiyen Tjoa Andi Besse Poleuleng Ani Kurniawati Anita Darwis Anita Th. Sinaga Anugrah, Pangeran Teguh Atikah, Nurhati Delima Ragil Kartika Dianto, Fajar Direja, Wahyu Angga Donathus Sutidjo Dr.-Ing. Dina Rubiana Widarda Edi Santosa Efendi, Darda Eko Sulistyono Gani Tarigan, Abdul Gani Grace Prilensia Damayanty Hariyadi Hariyadi Herdhata Agusta Ilyas Marzuki Indah Anita-Sari Irdika Mansur Kartika, Delima Ragil Krisantini Kusnendi, Faizal Shofwan Laksono, Purwanti Budi Launuru, Syahdin Lies Wahyuni Mardhikanto Luga Kadarisman Lukita Devy Maera Zasari Mahulette, Asri Subkhan Miska, Moch. Ega Elman Nindita, Anggi Ninin Yunike Novie Pranata Erdiansyah Odit Ferry Kurniadinata Riswan Basyri Nasution Rizki Fauziah Ramadhaini Rizkiana Anggayuhlin Rizkiana Anggayuhlin Roedhy Poerwanto Rohmah, Naelatur Rohman, Fadil Saiful Akhyar Lubis Sari, Allice Fajri Chynthia Sianturi, Vinsensia Febrina Siregar, Midian Romeo Sofyan Zaman Stefano, Indra Mario Sudarsono Sudarsono Sudarsono Sudirman Yahya Sudradjat , Sugeng Heri Suseno Suhartanto, Muhammad Rahmad Sulistianingrum, Ratih Supijatno SYAIFUL BAHRI Tengku Imam Saputra Tirsa Rachma Hastuti Ugroseno, Rene Vinsensia Febrina Sianturi Wahyu Angga Direja Yadi Setiadi

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