Garuda - Garba Rujukan Digital

Produksi dan Kualitas Beras Dua Varietas Padi Akibat Rebah dan Terendam . Dulbari; Edi Santosa; Eko Sulistyono; Herdhata Agusta; Dwi Guntoro; Sofyan Zaman; Yonny Koesmaryono
Jurnal Ilmu Pertanian Indonesia Vol. 23 No. 1 (2018): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Rice lodging followed by flooding has negatively detriment on the production, however, scientific evident is still rare. As the incident tends to escalate as the impact of extreme weather, hence, research was conducted in order to evaluate rice production and its quality of two rice genotypes treated with lodging-flooding. The experiment was conducted at Leuwikopo Farm IPB Bogor in July-October 2016 using randomized complete block design using two factors, i.e., variety (Way Seputih and Way Apo Buru) and lodging (no lodged [bending 0-18°], lodged [lodged 38-56°], and lodged with flooded [lodged 76-90°]). Rice hill aged 85 days after transplanting was lodged for 15 days. Results showed that lodged with flooded treatment did not increase yield loss although the plant tended to have sterility 5.59-22.00% higher, grain weight 2.05-35.26% lower, and 0.88-10.66% lower value of rice to unhusked ratio. Grains from the lodged-flooded plant had a number of head rice 13.38-15.78% lower, broken rice 0-24.84% higher, and stimulated germination on 1.33-3.40% grains than lodged-without-flooded. It is important to use rice varieties with stable on milling quality to address the lodged-flooded incident.

Strength assessment of rice hills from different planting distance by loading simulation Edi Santosa; Herdhata Agusta; Dwi Guntoro; Sofyan Zaman
Jurnal Ilmu Pertanian Vol 5, No 3 (2020): December
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.31895

Plant spacing arrangement might benefit hill strength from the impact of strong wind velocity during extreme weather situations. Here, a loading test to evaluate rice hill strength was performed on Ciherang variety grown in square and double row spacing 2:1. The research was conducted at Cilubang village, Dramaga, Bogor, West Java, Indonesia from March to May 2017. Weight holding capacity was evaluated in 85 days after transplanting on four levels of hill height, i.e., 80 cm, 60 cm, 40 cm, and 20 cm above soil level with three-time replication. The results showed that double-spaced hills had 66.0 % ± 3.1 % stronger than those of square spacing at all height measurement. To lodge a hill into 20 cm to 40 cm from soil level, it required 346.7 g to 741.7 g in square spacing, and 555.2 g to 1149.2 g in double row spacing. Stronger hills in double row spacing seemed to correlate with a higher number of tiller and hills architecture; it requires further study in the role of both factors on the hill strength improvement. The present study recommends applying double row spacing to improve rice hill strength especially at a time with a high chance of lodging by strong wind incident.

Strength assessment of rice hills from different planting distance by loading simulation Edi Santosa; Herdhata Agusta; Dwi Guntoro; Sofyan Zaman
Jurnal Ilmu Pertanian Vol 5, No 3 (2020): December
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.31895

Plant spacing arrangement might benefit hill strength from the impact of strong wind velocity during extreme weather situations. Here, a loading test to evaluate rice hill strength was performed on Ciherang variety grown in square and double row spacing 2:1. The research was conducted at Cilubang village, Dramaga, Bogor, West Java, Indonesia from March to May 2017. Weight holding capacity was evaluated in 85 days after transplanting on four levels of hill height, i.e., 80 cm, 60 cm, 40 cm, and 20 cm above soil level with three-time replication. The results showed that double-spaced hills had 66.0 % ± 3.1 % stronger than those of square spacing at all height measurement. To lodge a hill into 20 cm to 40 cm from soil level, it required 346.7 g to 741.7 g in square spacing, and 555.2 g to 1149.2 g in double row spacing. Stronger hills in double row spacing seemed to correlate with a higher number of tiller and hills architecture; it requires further study in the role of both factors on the hill strength improvement. The present study recommends applying double row spacing to improve rice hill strength especially at a time with a high chance of lodging by strong wind incident.

Continuous Heavy Rainfall and Wind Velocity During Flowering Affect Rice Production Herdhata Agusta; Edi Santosa; Dulbari Dulbari; Dwi Guntoro; Sofyan Zaman
AGRIVITA, Journal of Agricultural Science Vol 44, No 2 (2022)
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.v44i2.2539

To mitigate the impact of extreme weather incidents, rice cultivars Way Seputih (WS) and Way Apo Buru (WAB) were evaluated under simulation of continuous wind and rainfall treatments. The research was conducted from July to October 2017 at Leuwikopo Experimental Farm, Bogor, Indonesia. For 15 days at day time, flowering rice hills were treated with about 100 mm/h water shower (Experiment-1), and with 0, 10-15, 20-25 and 35-40 km/h wind velocity (Experiment-2). Results showed that wind and rainfall treatments reduced rice production; the effect depended on the genotypes and flowering stage. Rain treatment from panicle emergence to 50%-emerged increased the number of unfilled grains by 154.6-182.3% and 55.7-101.9% in WS and WAB cultivars, respectively. Rain treatment at 100%-emerged had no effect on WS, but it increased unfilled grain (163.5%) and decreased grain index (12.9%) in the WAB cultivar. Wind speed at 35-40 km/h promoted a high percentage of grain drop (25.7%) and unfilled grains (77.3%), and low grain index (20.8 g) in WS genotype. WAB was more tolerant of wind stress than the WS. The present experiment showed that genotype had different responses to wind and rain treatments implying different mitigation strategies should be applied through genotype selection.

Manajemen Pemanenan Terong (Solanum melongena L.) di Rumah Kaca Kebun Steenbergen, Belanda Dwi Mei Setiawan; sofyan zaman; Juang Gema Kartika
Buletin Agrohorti Vol. 11 No. 2 (2023): Buletin Agrohorti
Publisher : Departemen Agronomi dan Hortikultura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrob.v11i2.46844

Produktivitas terong di daerah subtropis terkhusus Belanda mencapai 400 ton ha-1 sedangkan produktivitas terong di dunia hanya mencapai angka 28 ton ha-1. Produktivitas tinggi pertanaman terong di Belanda didapatkan melalui budidaya terong di dalam rumah kaca. Kegiatan penelitian di Kebun Steenbergen, Belanda bertujuan mempelajari manajemen pemanenan terong di rumah kaca untuk mengurangi kehilangan hasil panen (losses). Kegiatan dilakukan pada bulan Maret hingga Juni 2018 di rumah kaca kebun Steenbergen, Belanda. Percobaan disusun menggunakan uji t-student dengan membandingkan terong yang di tanam pada rumah kaca dengan ketinggian yang berbeda. Manajemen pemanenan yang dilakukan oleh perusahaan meliputi perencanaan panen, proses panen, hingga pascapanen sangat baik. Perusahaan dapat memenuhi permintaan pasar dengan persentase produksi terong kelas 1 yang mencapai 98.3% dengan menekan produksi panen terong kelas 2 (losses) yang tidak lebih dari 2%. Kata kunci: kehilangan panen, perencanaan panen, proses pemanenan

Identifikasi Keragaman dan Dominansi Gulma di Perkebunan Teh, Pusat Penelitian Teh dan Kina Nurul Afiyah; Yudiwanti Wahyu Endro Kusumo; Sofyan Zaman; Fani Fauziah
Jurnal Penelitian Teh dan Kina Vol 2 No 2 (2023): Jurnal Sains Teh dan Kina
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/pptk.jur.jstk.v2i2.183

Budidaya tanaman teh tidak lepas dari proses pemeliharaan yang salah satunya adalah pengendalian gulma. Gulma merupakan tumbuhan liar yang tumbuh di sekitar tanaman budidaya yang kehadirannya merugikan tanaman budidaya. Pengendalian gulma perlu dilakukan agar tanaman dapat dibudidayakan secara produktif dan efisien. Dominansi gulma dapat membantu mengidentifikasi gulma di suatu areal sehingga pengendalian gulma dapat dilakukan secara efektif dan efisien. Penelitian ini dilaksanakan di Pusat Penelitian Teh dan Kina (PPTK), Gambung pada bulan Januari hingga Mei 2022. Pengamatan metode analisis vegetasi yang digunakan adalah metode kuadran di masing-masing blok kebun berdasarkan tahun pangkas. Gulma yang teridentifikasi di perkebunan teh sebanyak 44 jenis yang terbagi berdasarkan 3 golongan yaitu 38 jenis gulma berdaun lebar, 2 jenis gulma teki, dan 4 jenis gulma rumput. Hasil pengamatan menunjukkan bahwa gulma yang tumbuh pada Tahun Pangkas 1 didominansi oleh Commelina benghalensis, Tahun Pangkas 2 didominansi oleh Mitracarpus hirtus, Tahun Pangks 3 dan 4 didominansi oleh Ageratum conyzoides. Nilai koefisien komunitas antar tahun pangkas < 70% yang artinya populasi gulma tersebut heterogen. Pengendalian gulma secara manual menggunakan parang dan secara kimiawi menggunakan herbisida yang disemprotkan dengan menggunakan knapsack sprayer. Herbisida yang digunakan berbahan aktif Isopropilamina glifosat dengan dosis berkisar 2 L/ha, konsentrasi 5–5,3 mL/L dan volume semprot 375–400 L/ha. Waktu aplikasi pengendalian gulma secara kimiawi di perkebunan teh dilakukan pada pagi hari.

Cocoa Production Stability in Relation to Changing Rainfall and Temperature in East Java, Indonesia Edi Santosa; Ginanjar Pramudya Sakti; Muhamad Zainul Fattah; Sofyan Zaman; Ade Wahjar
Journal of Tropical Crop Science Vol. 5 No. 1 (2018): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Climate change as indicated by rising temperature and changing rainfall pattern has been known to affect cacao production in many production countries. However, studies on the effects of rainfall and temperature variability on the cacao production are rarely reported in Indonesia. Hence, the objective of this study is to evaluate the stability of cocoa production in relation to rainfall and temperature variability in order to develop sustainable production under climate change scenario. Research was conducted at a state owned company in Jember District, East Java, Indonesia from February to June 2015. Production and climatic data of 2010-2015 were evaluated using simple regression and correlation analysis. Results revealed that productivity fluctuated among months and among years. However, the fluctuation among months (s2 = 117.076) was lower than among years (s2 = 311.225). Rainfall and temperature showed variability among months and among years; and the fluctuation among months was lower in both rainfall and temperature. Rainfall at one to four months before harvest correlated with production (r=0.400-0.671; P= 0.000 to 0.001) and temperature at two to four months before harvest determined cocoa production (r=0.371-0.412; P=0.001-0.003). High monthly cocoa production coincided with decreasing temperature and rainfall for 4 to 5 months during pod development. The presented study implies that both short and long term strategies should be implemented under climatic variability to sustain cocoa production. It is recommended to apply production technology to stabilize micro climate temperature and to minimize the impact of high rainfall such as shade plant and canopy manipulation.

Manajemen Pengendalian Gulma Perkebunan Teh (Camellia Sinensis (L.) Kuntze) di Malang, Jawa Timur Rahayu, Christina Mey; zaman, sofyan; Ritonga, Arya Widura
Buletin Agrohorti Vol. 12 No. 3 (2024): Buletin Agrohorti
Publisher : Departemen Agronomi dan Hortikultura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrob.v12i3.59306

Gulma merupakan tumbuhan yang kehadirannya dapat mengganggu pertumbuhan tanaman, sebab gulma dapat menurunkan hasil produksi tanaman. Pengendalian gulma perlu dilakukan agar kerugian yang diakibatkan oleh gulma bisa diatasi. Penelitian bertujuan memahami dan mempelajari pengelolaan gulma serta menganalisis aspek pengendalian gulma yang dilakukan di kebun. Pengamatan yang dilakukan yaitu analisis vegetasi gulma menggunakan metode kuadrat yang berbentuk bujur sangkar dengan panjang 0.5 m x 0.5 m. Analisis vegetasi dilakukan pada area tanaman dengan tahun pangkas (TP) yang berbeda yaitu TP 0, TP 1, TP 2, dan TP 3. Data yang diperoleh dianalisis menggunakan uji t-student pada taraf 5%. Hasil pengamatan menunjukkan pengendalian gulma di Afdeling Wonosari dilakukan secara manual dan kimiawi. Pengendalian gulma manual dilakukan untuk mengendalikan gulma diatas bidang petik, gulma yang tingginya >30 cm, serta gulma berkayu. Pengendalian kimiawi dilakukan dengan alat knapsack sprayer dan herbisida yang digunakan berupa herbisida sistemik dengan bahan aktif isopropilamina glyphosat. Pengendalian gulma secara kimiawi lebih efektif dan efisien dari sisi tenaga kerja, biaya, serta hasil luasan yang dikerjakan. Kalibrasi semprot dilakukan sebelum dilakukan penyemprotan untuk mengetahui volume semprot yang diperlukan agar penyemprotan dapat dilakukan secara efektif. Keefektifan penyemprotan herbisida dipengaruhi oleh waktu pengaplikasian, waktu turunnya hujan, serta kemampuan penyemprot. Kata kunci: bidang petik, dominasi gulma, herbisida, koefisien komunitas

Pengelolaan Pemangkasan Teh (Camellia sinensis (L.) O. Kuntze) di Unit Perkebunan Tambi, PT Tambi, Wonosobo, Jawa Tengah Zaman, Sofyan; Muhammad Afif Farkhan Rony
Educativo: Jurnal Pendidikan Vol 1 No 2 (2022): Jurnal Teknik, Komputer, Agroteknologi dan Sains (Marostek)
Publisher : PT. Marosk Zada Cemerlang

Peningkatan produktivitas teh serta mutu teh membutuhkan pengelolaan pemangkasan yang baik. Kegiatan magang bertujuan memperoleh pengalaman kerja dan keterampilan teknis mengenai pengelolaan budi daya tanaman perkebunan teh. Kegiatan magang telah dilaksanakan di Unit Perkebunan Tambi, PT Tambi, Wonosobo, Jawa Tengah pada bulan Januari sampai April 2020. Hasil magang yang diperoleh menunjukan bahwa Unit Perkebunan Tambi melaksanakan pemangkasan pada bulan Februari sampai Mei (Semester I) dan bulan Oktober sampai November (Semester II) dengan menggunakan tipe pangkas bersih sebagai pangkas produksi. Gilir pangkas yang ditetapkan adalah empat tahun berdasarkan ketinggian tempatnya. Rata-rata tinggi tanaman sebelum dipangkas adalah 95.03 cm dengan rata-rata diameter bidang petik yaitu 107.29 cm. Rata-rata persentase pucuk burung tanaman teh sebelum dipangkas adalah 82.67 %. Tinggi tanaman teh setelah dipangkas adalah 49.72 cm. Tinggi tersebut masih di bawah standar Unit Perkebunan Tambi yaitu 55 cm. Kerusakan cabang disebabkan beberapa faktor, yaitu pengalaman tenaga pemangkas, alat pangkas, lama kerja, dan klon tanaman.

Manajemen Persiapan dan Pelaksanaan Panen Kopi Arabika (Coffea arabica L.) di Kebun Kalisat Jampit, Jawa Timur Karyati; zaman, sofyan
Buletin Agrohorti Vol. 13 No. 1 (2025): Buletin Agrohorti
Publisher : Departemen Agronomi dan Hortikultura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrob.v13i1.61534

Manajemen panen dan pelaksanaan panen memegang peranan penting dalam menjamin kelancaran kegiatan serta pencapaian hasil yang optimal. Manajemen ini mencakup fungsi perencanaan (planning), pengorganisasian (organizing), pelaksanaan (actuating), pengawasan (controlling), dan evaluasi (evaluation). Penelitian dilaksanakan pada bulan Januari hingga Mei 2020 di Kebun Kalisat Jampit, Jawa Timur, dengan tujuan menganalisis dan mengevaluasi manajemen persiapan serta pelaksanaan panen kopi Arabika. Pengamatan yang dilakukan yaitu taksasi produksi, persiapan sarana dan prasarana, pemetaan rotasi panen, tenaga petik, kualitas dan kuantitas hasil petik, faktor kehilangan hasil dan tingkat kehilangannya, transportasi hasil, serta sistem upah. Data dianalisis menggunakan uji statistik t-student, rata-rata, dan persentase. Hasil penelitian menunjukkan bahwa jumlah tenaga kerja per Januari 2020 berjumlah 1,410 orang dengan luas panen 1,332.23 ha dengan rata-rata luas blok panen 1,617 ha. Setiap afdeling dibagi menjadi 15 blok petik, dengan rotasi panen setiap 8–12 hari. Penentuan luas areal panen didasarkan pada kondisi tanaman menghasilkan (TM) dan kondisi tanaman. Rata-rata kualitas petik pada awal panen mencapai 84.39% buah merah. Usia dan jenis kelamin tenaga pemetik tidak berpengaruh nyata terhadap hasil panen. Pengolahan kopi dilakukan dengan dua metode, yaitu pengolahan basah (wet process/WP) dan pengolahan kering (dry process/DP). Kata kunci: kriteria pemanenan, pengolahan kopi, perkebunan kopi, persiapan panen

Title

Found 36 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 36 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 36 Documents
Search