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Identifikasi Karakter yang Berpengaruh terhadap Hasil Biji Beras Kopi Arabika di Kabupaten Garut Menggunakan Analisis Lintasan Bertahap Randriani, Enny; Dani, Dani; Sulistiyorini, Indah; Wardiana, Edi
Jurnal Tanaman Industri dan Penyegar Vol 1, No 3 (2014): Jurnal Tanaman Industri dan Penyegar
Publisher : Pusat Penelitian dan Pengembangan Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jtidp.v1n3.2014.p175-184

Abstract

Keterkaitan antara karakter vegetatif, komponen buah, komponen biji, dan hasil biji beras pada tanaman kopi merupakan hal penting dalam program pemuliaan dan seleksi. Model saling keterkaitan antar karakter tersebut adalah model sebab-akibat dan dapat dianalisis melalui analisis lintasan bertahap (ALB). Penelitian bertujuan mengidentifikasi karakter-karakter yang berpengaruh terhadap hasil biji beras kopi Arabika di daerah Garut, Jawa Barat melalui penggunaan analisis lintasan bertahap (ALB) dan model persamaan struktural (MPS). Penelitian dilaksanakan di Desa Marga Mulya, Kecamatan Cikajang, Kabupaten Garut, Jawa Barat, bulan Januari sampai Desember 2013 pada ketinggian tempat 1.300 m di atas permukaan laut dengan jenis tanah Andosol. Penelitian menggunakan metode survei dengan pengambilan contoh secara acak terhadap lima genotipe kopi Arabika, yaitu ABP-1, ABP-2, ABP-3, AGK-1, dan S 795. Hasil penelitian menunjukkan terdapat tiga karakter yang berpengaruh positif secara langsung, yaitu jumlah ruas pada batang, tebal buah, dan bobot 100 biji gabah. Karakter panjang cabang primer berpengaruh positif secara tidak langsung, sedangkan karakter jumlah cabang sekunder dan jumlah ruas cabang primer berpengaruh negatif secara tidak langsung. Karakter-karakter tersebut dapat digunakan sebagai kriteria seleksi pada populasi kopi Arabika di daerah Garut, Jawa Barat.Kata kunci: Kopi Arabika, seleksi karakter, analisis lintasan bertahap, model persamaan strukturalThe linkage between the vegetative characters, fruit components, production seeds component and rice seeds of the coffee plant is important in breeding and selection programs. Models of interrelations between these characters are causal models and can be analyzed through sequential path analysis (SPA). The objective of this study was to identify of several characters affecting on green bean yield of Arabica coffee in Garut, West Java by using sequential path analysis (SPA) and structural equation modeling (SEM). This research was conducted in the Marga Mulya Village, Cikajang District, Garut Regency, West Java, with altitude about 1300 m above sea level and Andosol type of soil, starting from January to December 2013. The research was conducted in survey method with random sampling method on the Arabica coffee genotypes such as ABP-1, ABP-2, ABP-3, AGK-1, and S795. The results showed that there are three characters having directly positive effect on green bean yield: number of internodes on stem, fruits thickness, and weight of 100 beans. On the other hand, length of primary branches has indirectly positive influence, while number of secondary branches and number of internodes on primary branches has indirectly negative influence. These characters can be used as selection criteria on the population of Arabica coffee in Garut, West Java. 
Evaluasi Tingkat Toleransi 35 Genotipe Kakao terhadap Periode Kering Towaha, Juniaty; Wardiana, Edi
Jurnal Tanaman Industri dan Penyegar Vol 2, No 3 (2015): Jurnal Tanaman Industri dan Penyegar
Publisher : Pusat Penelitian dan Pengembangan Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jtidp.v2n3.2015.p133-142

Abstract

A prolong dry periods could have a negative impact on growth and yield of cocoa. The objectives of this study were to evaluate the tolerance levels of 35 cocoa genotypes to dry periods. The study was conducted at the Pakuwon Experimental Station, Indonesian Industrial and Beverages Crops Research Institute, Sukabumi, West Java; 450 m above sea level; Latosol soil type; and B type of climate; started from August 2014 until October 2015. Thirty five cacao genotypes consisted of two released variety  (i.e Sulawesi 1 and SCA 6) and 33 other genotypes were used in this research.  The cacao plants were three-years old, cultivated at a 3 x 3 m spacing distance under the 26 years old Salak Dwarf coconut trees.  Ten plant samples were determined randomly and the fruits were harvested in February 2015 (wet period) and October 2015 (dry period). A bulk of 10–30 pods per genotype were randomly selected for each harvest periods. The variable observed were fresh weigth per pod,  number of beans per pod, fresh and dry weight of beans per pod, and fresh weight of pod husks + pulps per pod. The tolerance level to dry periods was determined base on the dry weight of bean/pod.  The result showed that a continueous six months dry periods prior to harvesting significantly reduced yield components from 4.92%-42.54%.  Based on the dry weight of beans per pod, three genotypes, namely KW 162, KW 165, and KW 215, were classified as tolerant, while the other were moderately tolerant and susceptible to drought. The result implies the important of further research to obtain superior cocoa clones resistance to drought.
Pengaruh Pupuk Kandang dengan Penambahan Mikrob Pelarut Fosfat terhadap Pertumbuhan dan Hasil Kopi Robusta Sobari, Iing; Pranowo, Dibyo; Wardiana, Edi
Jurnal Tanaman Industri dan Penyegar Vol 5, No 2 (2018): Jurnal Tanaman Industri dan Penyegar
Publisher : Pusat Penelitian dan Pengembangan Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jtidp.v5n2.2018.p59-66

Abstract

Farmyard manure and biofertilizer is able to substitute chemical fertilizers in improving the plants growth and production. The manure acts as the  energy source for soil microbes, while biofertilizer with phosphate solubilizing microbes (PSM) can increase phosphate (P) availability for plants.  The research aimed to investigate the effect of farmyard manure added with PSM on growth and yield of 5 Robusta coffee clones, conducted at Pakuwon Experimental Station, Indonesian Industrial and Beverage Crops Research Institute (IIBCRI), Sukabumi, from January 2014 to June 2017. A split plot design was used with 3 replications. The main plot factors were 5 Robusta coffee clones (BP 308, SA 237, BP 42, BP 358, and BGN 371), whereas the subplot  factors were types of fertilizers (chicken, sheep, and cow manure added with PMS), and NPK fertilizers as control. Variables observed were components of vegetative growth, percentage of flowering plants, and weight of fresh berries. The results showed that 5 Robusta coffee clones used exhibited similar responses to the PMS-added farmyard manure application. Chicken manure added with PMS enhanced P-available and improved vegetative growth of coffee plants better than other farmyard manure, similar with the effect of NPK fertilizers. Up to 4 years old plants, the PM-added farmyard manure application did not affect the weight of fresh berries.
Atribut Mutu Empat Kultivar Kopi Arabika pada Ketinggian Tempat Tumbuh dan Metode Pengolahan yang Berbeda Randriani, Enny; Dani, Dani; Wardiana, Edi
Jurnal Tanaman Industri dan Penyegar Vol 5, No 1 (2018): Jurnal Tanaman Industri dan Penyegar
Publisher : Pusat Penelitian dan Pengembangan Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jtidp.v5n1.2018.p21-30

Abstract

Mutu seduhan kopi Arabika, selain dipengaruhi oleh kultivar, juga dipengaruhi oleh ketinggian tempat tumbuh dan teknik pengolahan biji. Namun demikian, pengaruh interaksi antara ketiga faktor tersebut belum banyak dilaporkan. Tujuan penelitian adalah  menganalisis atribut mutu citarasa empat kultivar kopi Arabika pada ketinggian tempat tumbuh dan metode pengolahan yang berbeda. Penelitian dilaksanakan di Kampung Legok Gede dengan ketinggan 1.400 m dpl (di atas permukaan laut) dan Pasir Geulis (1.700 m dpl), Desa Margamulya, Kecamatan Cikajang, Kabupaten Garut, Jawa Barat;  Balai Penelitian Tanaman Industri dan Penyegar (Balittri), Sukabumi; dan  Pusat Penelitian Kopi dan Kakao, Jember, mulai bulan April sampai November 2017. Penelitian menggunakan rancangan acak lengkap faktorial 3 faktor dengan 2 ulangan. Faktor pertama adalah  kultivar (AGK-1, Sigarar Utang, S795, dan Buhun), faktor kedua  ketinggian tempat (1.400 dan 1.700 m dpl), dan faktor ketiga  metode pengolahan (basah, kering-honey, dan kering-natural). Di samping itu, dilakukan juga analisis korelasi dan analisis lintasan. Hasil penelitian menunjukkan pengaruh interaksi yang nyata antara ketiga faktor yang diuji terhadap atribut aftertaste dan body. Faktor kultivar berpengaruh nyata terhadap skor total, atribut balance, dan overall. Ketinggian tempat nyata berpegaruh terhadap skor total dan atribut flavor, sedangkan metode pengolahan nyata berpengaruh terhadap skor total, atribut aroma, dan flavor. Seluruh atribut mutu kopi berkorelasi sangat nyata dengan skor total, tetapi atribut overall memiliki pengaruh langsung yang paling kuat.