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PEMBERIAN STIMULAN PADA BIDANG SADAP DALAM MEMPENGARUHI PRODUKSI DAN KUALITAS LATEKS TANAMAN KARET (Hevea brasiliensis (Muell. Arg.) Hayata Hayata; Yulistiati Nengsih; Rahmanto Wibowo
Jurnal Media Pertanian Vol 4, No 1 (2019): April
Publisher : Universitas Batanghari

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (828.705 KB) | DOI: 10.33087/jagro.v4i1.79

Abstract

Production increasing of latex on rubber plants can be increased by using a stimulants. One of it  is Vicar 10 SL. The purpose of this study was to find out the effect of Vicar 10 SL on the production and quality of latex. This research was carried out in the Kasang Parit Village, Sekernan District, Muaro Jambi Regency, and the Goods Quality Control and Certification Center on Industry and trade department   in Jambi Province. The study was conducted in July to August 2017. The design used was a completely randomized design with one treatment factor as the Vicar 10 SL application with four levels of treatment, namely; Without treatment (V0/control), 1 ml/Tree (V1), 2 ml/tree (V2), 3 ml/tree (V3). There were 4 times  repeatation on each treatment. Using  fingers, a Vicar 10 SL solution was applied to the tapping groove which was adjusted to the treatment, and allowed to keep it 24 hours. Tapping is done in the next morning, by following the grooves and be stored in a cup and left until the latex stoped dripping. Vicar was given once a week during 30 days. Tapping was done 3 times a week. The variables observed were latex production (gram/tree/day), dry rubber content (%), latex ash content (%), and latex dirt content (%). Vicar giving 10 SL in the tapping site with a dose of 2 ml / tree gave the highest yield of latex production (93.38 grams / tree / day) and dry rubber content (75.50%) and was significantly different compared to the other treatments. Vicar giving 10 SL in tapping site had no significant effect on latex dirt content and latex ash contentKeywords: Latex, stimulant, product and quality Abstrak Peningkatan produksi lateks pada tanaman karet dapat ditingkatkan dengan menggunakan stimulan. Salah satu pemakaian yang digunakan adalah Vikar 10 SL. Tujuan penelitian ini adalah untuk megetahui penggunaan stimulan pada bidang sadap dalam mempengaruhi produksi dan kualitas lateks. Penelitian ini dilakukan di Desa kasang Parit Kecamatan Sekernan Kabupaten Muaro Jambi, dan Balai Pengujian dan Sertifikasi Mutu Barang (BPSMB) Disperindag Propinsi Jambi. Penelitian dilakukan pada bulan Juli sampai dengan Agustus 2017. Rancangan yang digunakan adalah Rancangan Acak Lengkap dengan satu faktor perlakuan pemberian stimulan (Vikar 10 SL) dengan empat taraf perlakuan  yaitu; Tanpa perlakuan (V0/kontrol),  1 ml/ Pohon (V1),  2 ml/pohon (V2), 3 ml/pohon  (V3). Setiap perlakuan diulang sebanyak 4 kali. Dengan menggunakan jari dioleskan larutan Vikar 10 SL pada alur sadap  yang disesuaikan dengan perlakuan, dan didiamkan selama 24 jam. Penyadapan dilakukan pada pagi hari esoknya, dengan mengikuti alur torehan dan ditampung dalam cawan dan dibiarkan sampai lateks berhenti menetes. Pemberian Vikar dilakukan sekali 7 hari selama 30 hari. Penyadapan dilakukan  3 kali dalam seminggu. Peubah yang diamati adalah produksi lateks (gram/pohon/hari)), kadar karet kering (%), kadar abu lateks (%), kadar kotoran lateks (%). Pemberian stimulan (Vikar 10 SL) pada bidang sadap dengan dosis 2 ml/pohon memberikan hasil yang tertinggi terhadap produksi lateks 93,38 gram/pohon/hari dan kadar karet kering 75,50 % dan berbeda nyata bila dibandingkan dengan perlakuan lainnya. Pemberian stimulan (Vikar 10 SL) pada bidang sadap berpengaruh tidak nyata terhadap kotoran lateks dan kadar abu lateksKata kunci :Lateks, stimulan, produksi dan kualitas
PENGGUNAAN JAMUR ENTOMOPATHOGEN (Beauveria bassiana ) UNTUK MENEKAN TINGKAT SERANGAN HAMA PENGGEREK BUAH KAKAO (Conopomorpha cramerella Snell.) DI KEBUN RAKYAT DESA BETUNG KABUPATEN MUARO JAMBI Hayata Hayata
Jurnal Media Pertanian Vol 3, No 2 (2018): Oktober
Publisher : Universitas Batanghari

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (337.221 KB) | DOI: 10.33087/jagro.v3i2.66

Abstract

ABSTRACTOne of the barriers in the cacao caltivation is attacking of hama penggerek Buah Kakao (PBK) that caused by conopomorpha cramerella.Inflicted Damage caused by PBK larvae was look like broken and wrinkled seeds, and there was a dark color on its skin that caused the decreasing of products weight and its quality.To control this BPK pests of cocoa could C Cramerella, generally farmers used chemical insecticide. The continously use of this insecticide was feared a bigger trouble such as pest resistance, environmental pollution, and product refusing caused by the pesticide leftover over the standard. Biological control using entomopatogen was one of PHT. Concept. The useness of entomopatogen such as beauveria bassiana fungi as a controller agent is one way to avoid the negative impacts of chemicals toward to the environment .B. bassiana Fungi possess the high reproductive capacity, easily produced and it is able to produce a long surviving spores on a unfavorable condition. B. bassiana has a high potential in controlling various types of pest. Beside, this fungi shows easily obtained, it also easy propagated so that it can be reduces the control cost.The useness of B. bassiana fungi as a cacao pest control that will be conducted in small cocoa plantations in the Kebun Sembilan village will show how its ability in reducing the cacao pest population.The research uses completly randomsed block design which rice media with B. bassiana as a treatment factor. The result should has relation with cacao quality.Key word: Conopomorpha cramerella , beauveria bassiana , attacking intensitas.ABSTRAKSalah satu kendala dalam pengembangan tanaman kakao adalah serangan hama penggerek buah kakao (PBK) yang disebabkan oleh Conopomorpha cramerella. Kerusakan yang ditimbulkan oleh larva PBK berupa rusak dan mengeriputnya biji, timbulnya warna gelap pada kulit biji yang mengakibatkan turunnya berat dan mutu produk. Untuk mengendalikan hama penggerak buah kakao C. cramerella tersebut umumnya petani menggunakan insektisida kimia. Penggunaan insektisida secara terus-menerus dikhawatirkan menimbulkan masalah yang lebih berat, antara lain terjadinya resistensi hama, pencemaran lingkungan, dan ditolaknya produk akibat residu pestisida yang melebihi ambang toleransi.Pengendalian hayati dengan menggunakan entomopatogen merupakan salah satu dari konsep PHT. Penggunaan entomopatogen jamur Beauveria bassiana sebagai agen pengendali merupakan salah satu cara untuk menghindari dampak negatif dari bahan kimia terhadap lingkungan. Jamur B. bassiana mempunyai kapasitas reproduksi yang tinggi, mudah diproduksi dan pada kondisi yang kurang menguntungkan dapat membentuk spora yang mampu bertahan lama di alam. B. bassiana memiliki potensi yang besar dalam mengendalikan berbagai jenis hama. Selain mudah didapat, jamur ini mudah diperbanyak sehingga dapat menurunkan biaya pengendalian. Pengunaan jamur B. bassiana untuk pengendalian penggerek buah kakao yang akan dilakukan di perkebunan kakao rakyat di desa kebun sembilan akan memperlihatkan bagaimana kemampuan jamur tersebut dalam menekan populasi penggerek buah kakao. Penelitian menggunakan rancangan acak kelompok dengan faktor perlakuan berat media beras nasi yang terkandung B. bassiana. hasil akhirnya adalah kualitas buah kakao.Kata kunci : Conopomorpha cramerella, Beauveria bassiana, Intensitas serangan,
RESPON TANAMAN KAKAO (Theobroma cacao L.) TERHADAP PEMBERIAN PUPUK KASCING Irhantoro Adi Wibowo; Yulistiati Nengsih; Hayata Hayata
Jurnal Media Pertanian Vol 5, No 2 (2020): Oktober
Publisher : Universitas Batanghari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/jagro.v5i2.100

Abstract

The growth of cocoa seedlings is influenced by the application of vermicompost fertilizer to the planting medium. The use of vermicompost in various doses of planting media can support the growth of cocoa plants. This study aims to determine the effect of giving several doses of vermicompost fertilizer on the growth of cocoa (Theobroma cacao L.). The research was conducted at Nursery Citraland NGK Jambi which is located at Jl. Ismail Malik RT 046, Mayang Mangurai Village, Alam Barajo District, Jambi from January 2020 to May 2020. This research was conducted using a Completely Randomized Design Environment (CRD) with a vermicompost fertilizer treatment design consisting of 4 doses, namely k0 (Not given vermicompost fertilizer), k1 (vermicompost fertilizer 300 g polybag-1), k2 (vermicompost fertilizer 600 g polybag-1), k3 (vermicompost fertilizer 900 g polybag-1). The results showed that there was a significant effect of vermicompost fertilizer in several doses on plant height parameters (cm), but the parameters of stem diameter (mm), shoot dry weight, root dry weight, and root canopy ratio showed no significant effect.Key words: cocoa, dosage, vermicompost fertilizer.  ABSTRAKPertumbuhan bibit kakao dipengaruhi oleh pemberian pupuk kascing pada media tanam. Penggunaan kascing pada media tanam dengan berbagai dosis mampu menunjang petumbuhan tanaman kakao. Penelitian ini bertujuan Penelitian ini bertujuan untuk mengetahui pengaruh pemberian beberapa dosis pupuk kascing pada pertumbuhan tanaman kakao (Theobroma cacao L.). Penelitian dilakukan di Nursery Citraland NGK Jambi yang beralamat di Jl. Ismail Malik RT 046, Kelurahan Mayang Mangurai Kecamatan Alam Barajo, Jambi pada bulan Januari 2020 sampai dengan Mei 2020. Penelitian ini dilakukan dengan menggunakan Rancangan Lingkungan Rancangan Acak Lengkap (RAL) dengan rancangan perlakuan pupuk kascing yang terdiri dari 4 dosis yaitu k0 (Tidak diberi pupuk kascing), k1 (Pupuk kascing 300 g polybag-1), k2 (Pupuk kascing 600 g polybag-1), k3 (Pupuk kascing 900 g polybag-1). Hasil penelitian menunjukkan terdapat pengaruh nyata pemberian pupuk kascing dalam beberapa dosis terhadap parameter tinggi tanaman (cm), namun pada parameter diameter batang (mm), bobot kering tajuk, bobot kering akar, dan nisbah tajuk akar menunjukkan pengaruh tidak nyata. Kata kunci : dosis, kakao, pupuk kascing.
INTENSITAS SERANGAN HAMA TIKUS BELUKAR (Rattus sp) PADA TANAMAN KELAPA SAWIT (Elaeis guineensis Jacq.) MENGHASILKAN DI KEBUN RAKYAT DESA SUKO AWIN JAYA KABUPATEN MUARO JAMBI Hayata Hayata; Nasamsir Nasamsir; Robi Aldinardo
Jurnal Media Pertanian Vol 6, No 2 (2021): Oktober
Publisher : Universitas Batanghari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/jagro.v6i2.126

Abstract

Cultivation of oil palm is inseparable from pests. One of the main pests that attack oil palm plants is  the rat class which can cause  oil palm plantations get a high losses. The aim of this study was to determine the attacktion  intensity of  the bush rat (Rattus sp) in   Oil Palm smallholder at  Suko Awin Jaya Village, Muaro Jambi Regency. The research was carried out from February to April 2021 at the oil palm smallholder specifically  farmer group“Ridho Ilahi”. The experimental design was  unformated trials, and the location was purposively  chosen. The location determination of the sample was based on to  the initial survey that there was found     rats attacktion in this place. Sampling was carried out concurrently at the time  fresh fruit bunches harvesting,   fruit counting in the bunch, counting the number of fruits eaten by rats, counting good fruit (free from rat pest attacks), and weighing the weight of fresh fruit bunches. Parameters observed were the attacktion  level in the land, attacktion  intensity, production per hectare, environmental sanitation conditions. The rats attacktion  rate of  100%, means that all sample  in one stretch of   plantation  have been   attackted by rats, it was indicated by a bite scars on the harvested fresh fruit bunches. The attacktion intensity of the bush rat pest was 23%. The average production was 21.6 tons/hectare/year. The sanitation conditions on the land was partially overgrown with weeds and there were piles of midrib in the area between the certain two path of oil palm tree.
UJI EFEKTIFITAS PENGENDALIAN GULMA SECARA KIMIAWI dan MANUAL pada LAHAN REPLANTING KARET (Hevea brasiliensis Muell.Arg.) di DUSUN SUKA DAMAI DESA PONDOK MEJA KABUPATEN MUARO JAMBI Hayata Hayata; Araz Meilin; Tari Rahayu
Jurnal Media Pertanian Vol 1, No 1 (2016): April
Publisher : Universitas Batanghari

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (696.924 KB) | DOI: 10.33087/jagro.v1i1.14

Abstract

AbstractThe purpose of this research was to know: 1) weed dominancy in rubber replanting plantations before controlling, 2) weed control effectiveness both is chemically and manualy, 3) difference weed SDR value after the chemically and manualy. This research was conducted in comunity control have been done Plantation area eg. Suka Damai  Pondok Meja village, Mestong district, Muaro Jambi Regency, Jambi province. . Research conducted for ± 2 months ( December 2014 to January 2015). Experiment using a completely randomized design with  four treatment, namely : P0: control(without treatment), P1: parakuat dichloride  dose of 6 ml 2400 ml-1 water for treatment plots, P2: glyphosate isopropyl amine  dose of 6 ml 2400 ml water-1 for treatment plots, P3: manualy control by pulling. Each treatment has four times replication. Dominant weed acreage replanting of rubber Suka damai before treatment weed control is Euphorbia hirta (SDR 29.02%), Cleome rutidospermae (SDR 19.70 %), Paspalum conjugatum (SDR 12.82%), Cyperus pilosus (SDR 7.99%), and Clidemia hirta (SDR 6.49%). Chemically weed control treatment with the herbicide paraquat and glyphosate herbicides are more effective in suppressing the growth of new weed than manually treatment. There is a difference SDR value after being given by chemically and manually weeds controling treatment the most dominant weed, Euphorbia hirta has increased from 29.02% to 45.80%, Cleome rutidospermae weed has decreased the SDR value from 19.70% to 15.26%. Keywords : herbicides, dominant weeds, rubber tree, SDR AbstrakPenelitian ini bertujuan untuk mengetahui : 1) dominansi gulma di perkebunan replanting karet sebelum pengendalian, 2) efektifitas pengendalian gulma secara kimiawi dan manual, 3) perbedaan nilai SDR gulma yang tumbuh setelah dilakukan pengendalian secara kimiawi dan manual. Penelitian dilakukan di areal perkebunan rakyat replanting berumur 3 tahun dusun Suka damai desa Pondok Meja, kecamatan Mestong, kabupaten Muaro Jambi, provinsi Jambi.. Penelitian dilakukan selama ± 2 bulan mulai bulan Desember 2014 sampai bulan Januari 2015. Percobaan dirancang menggunakan rancangan acak lengkap satu faktor dengan empat perlakuan, terdiri dari : P0: kontrol (tanpa perlakuan), P1: parakuat diklorida 6 ml 2400 ml-1 air per petak perlakuan, P2: isopropyl amina glifosat 6 ml 2400 ml air-1 per petak perlakuan, P3: pengendalian manual dengan cara dicabut. Masing-masing perlakuan diulang 4 kali Gulma dominan pada areal replanting karet dusun Suka damai sebelum perlakuan pengendalian gulma adalah Euphorbia hirta (SDR 29,02%), Cleome rutidospermae (SDR 19,70%),  Paspalum conjugatum (SDR 12,82%), Cyperus pilosus (SDR 7,99%), dan Clidemia hirta (SDR 6,49%). Pengendalian gulma secara kimiawi dengan herbisida paraquat dan herbisida glifosat lebih efektif menekan pertumbuhan gulma baru dibanding pengendalian gulma secara manual. Terdapat perbedaan nilai SDR setelah perlakuan pengendalian gulma secara kimiawi dan manual pada gulma yang paling dominan, Euphorbia hirta mengalami peningkatan dari 29,02% menjadi 45,80%, gulma Cleome rutidospermae mengalami penurunan nilai SDR dari 19,70% menjadi 15,26%. Kata kunci ; herbisida, gulma dominan, tanaman karet, SDR
POPULASI KUMBANG TANDUK (Oryctes rhinoceros L.) PADA KEBUN KELAPA SAWIT PEREMAJAAN SISTEM SISIPAN DAN TUMBANG SEREMPAK DI KECAMATAN BAHAR UTARA KABUPATEN MUARO JAMBI Hayata Hayata; Nasamsir Nasamsir; Beni Afriansyah
Jurnal Media Pertanian Vol 6, No 1 (2021): April
Publisher : Universitas Batanghari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/jagro.v6i1.115

Abstract

It is necessary to carry out replanting  activities  to increase  the production and productivity of oil palm plants.  Rejuvenation of oil palm plantations can be done through an inserting system  and totally rejuvenation system. The population propagation of horn beetles  growed faster  in oil palm plantations with inserting rejuvenation system than in totally rejuvenation system. This study aimed to obtain an accurate information on the population of horn beetles in oil palm plantations. The research has been conducted on  July-August 2020  in Talang Bukit Village as an inserting system area Talang Datar Village as a totally rejuvenation area, Bahar Utara District, Muaro Jambi Regency, Jambi Province. An unformated trial was carried out as an experimental design and the location determination was purposively chosen  for there were plants under study and showed a uniform condition at that location.  the sampling locations based on oil palm plantation rejuvenation systems, namely: (1) inserting rejuvenation system, and (2) totally rejuvenation system. There were 15 / Ha population at oil palm plantation with inserting rejuvenation system,  while there were 3 horn beetles/Ha in totally rejuvenation system. The percentage of horn beetle attacking was 22,22 in  inserting rejuvenation system while it was only 3.70%. in the  totally rejuvenation system.Key words: population, horn beetle,  rejuvenation, oil palm
Populasi dan Keanekaragaman Serangga Penyerbuk di Kebun Kelapa Sawit Desa Rantau Kapas Bukit Paku Kabupaten Batanghari Hayata Hayata; Nasamsir Nasamsir; Prasetyo Hady Saputro
Jurnal Media Pertanian Vol 7, No 2 (2022): Oktober
Publisher : Universitas Batanghari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/jagro.v7i2.161

Abstract

The presence of pollinatting insect is an unseparated part in oil palm cultivation. The insect population and its diversity   will affect the pollination process that will produce a good   fruit. This study aimed to determine and study the population as well as the species diversity of pollinating insects on smallhoulder oil palm plantations in Rantau Kapas Bukit Paku Village, Batanghari Regency. Unformated Trials  was carried out  as the experimental design and the location was porpusively chosen because there were plants under study and were uniform in  that location.The method used was a descriptive survey method, which deal with  observing the types and numbers of pollinating insects caught at the sample locations in smallholder oil palm plantations aged 6 years. Catching pollinating insects used Kairomix pheromone traps. The results of the study showed that there were 18,301 species of E kamerunicus  and 478 species of Thrips hawaiiensis  pollinated insects were caught, while 378 non-pollinated insects were caught in the oil palm plantation area in the Bukit Paku area. The general morphology of the fruit was Tenera fruit type, with the average of Fresh Fruit Bunch (FFB) weight as 9.4 kg.
Characteristics of Peat with Different Depths in Supporting Growth and Productivity of Oil Palm Ida Nur Santi; Hayata Hayata; Bangun Bangun
JOURNAL OF TROPICAL SOILS Vol 28, No 1: January 2023
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2023.v28i1.17-22

Abstract

The potential for oil palm production on peatlands is very diverse; different types of peat, maturity, and depth significantly influence yields. This study aims to determine the characteristics of peat with different depths in supporting the growth and productivity of oil palm. The research was conducted at the PT Kaswari Unggul Palm Oil Plantation in Jambi Province using laboratory surveys and test methods. Observations done were Plant height, Number of Fresh Fruit Bunches (FFB), Stem Circumference, FFB Weight, Midrib Length, Palm Oil Productivity, Light Intensity. Soil analysis were available-P, total-Fe-, total N, organic-C and CEC, pH, Al-exchange, total-K, Soil Moisture, and Peat Maturity. In shallow peat, the soil is more completely decomposed and provides nutrients that can be absorbed by plants so that plants grow better. The results showed that the shallow peat has a maturity level of sapric peat (very ripe) and peat in hemic maturity (slightly mature). Also, the depth of peat will affect the value of total-N, pH, available-P, and K-exchange and does not affect organic-C, total-Fe, CEC, and Al-exchange. Moreover, the growth and production of oil palm on shallow peat were better than on deep peat.
Pengaruh Pemberian Pupuk Kompos Kotoran Sapi Pada Media Tanam Tanah Ultisol Terhadap Pertumbuhan Bibit Pinang Betara (Areca catechu L. var.Betara) Di Polibag Nasamsir Nasamsir; Ridawati Marpaung; Hayata Hayata; Fani Agustin
Jurnal Media Pertanian Vol 8, No 1 (2023): April
Publisher : Universitas Batanghari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/jagro.v8i1.186

Abstract

Ultisol soils have several constraints, both physical and chemical properties of the soil such as acid to very acidic soil reactions, low to very low organic C, low total N, macronutrients such as low P, K, Ca and Mg, high Al saturation which are toxic to plants, cation exchange capacity (CEC) and base saturation (BS) are low to very low so that they can cause stunted plant growth. This study aims to examine the effect of cow dung compost on Ultisol soil planting media on the growth of Betara betel nut in polybags. This research will be carried out on campus II of Batanghari University Jambi (Pijoan) and soil analysis will be carried out at the Laboratory of the Environmental Service of Jambi Province, this research was carried out for 3 months from April to June 2022. The design used in this study was a completely randomized design (CRD). ) by one factor. The treatment that was tried was cow dung compost (k) with 4 levels of dosage as follows: k0, k1, k2 and k3. Parameters observed included plant height, seedling diameter, plant dry weight, root dry weight and soil chemical properties. To determine the effect of the treatment being tested, the data were analyzed using analysis of variance, then if the analysis of variance showed a significant difference, it was continued with the DNMRT test at a level of 5%. The results showed that the application of cow dung compost had a significantly different effect on plant height, stem diameter, plant dry weight and root dry weight of Betara betel nut. The highest betel nut plant height was found in k3 treatment of 87.41cm and there was an increase in plant height of 54.95% when compared to k0. The highest stem diameter growth was obtained from k3 of 1.17 mm, an increase of 67.14% compared to k0 treatment. The highest plant crown dry weight was obtained in the k3 treatment of 96.72 g and there was an increase of 202.72% compared to k0. The highest root dry weight was obtained in the k3 treatment of 41.02 g and there was an increase of 144.60% compared to k0.
PEMBERIAN ARANG SEKAM PADI PADA MEDIA TANAM UNTUK MENDUKUNG PERTUMBUHAN BIBIT KAKAO (Theobroma cacao L.) Ida Nursanti; Hayata Hayata; Agus Jufriyanto
Indonesian Journal of Thousand Literacies Vol. 1 No. 3 (2023): Indonesian Journal of a Thousand Literacy
Publisher : Nindikayla Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57254/ijtl.v1i3.48

Abstract

Ultisol soil has very low nutrients and organic matter, so it is necessary to provide input of organic matter to support the supply of nutrients for the growth of cocoa plants. This study aims to determine the effect of several doses of rice husk charcoal on the growing media for cocoa seedling. This study used a completely randomized design (CRD) and treatment design, namely rice husk charcoal with 4 levels of composition including; S0 : 3,000 g of ultisol soil without rice husk charcoal, S1: 2,400 g of ultisol soil + 600 g of husk charcoal, S2: 2,250 g of ultisol soil + 750 g of husk charcoal, S3 : 2,100 g of ultisol charcoal + 900 g of husk charcoal. Data were analyzed using analysis of variance, followed by Duncan's Multiple Distance Test (DNMRT) at the level of 5%. The results showed that the application of rice husk charcoal to cocoa plants had a significant effect and produced plant height S2 (45.21 cm), stem diameter S2 (27.06 mm), root dry weight S2 (15.18 g), weight S2 canopy dryness (32.09 g) and S2 quality index (2.52).
Co-Authors ., Nasamsir Afrozi Afrozi Agus Jufriyanto Annisa Berliana Putri Araz Meilin Armando, Aldi Bangun Bangun Bangun, Bangun Beni Afriansyah Fani Agustin Febryanti, Latipa Reza Hidayatullah Hidayatullah Holil Aswan Harahap Ida Nur Santi Ida Nursanti Ilham, Febil Nugraha Irhantoro Adi Wibowo Marwan, Edy Mayangsari, Serli Sapitri Muhammad Satibi Nasamsir Nasamsir Nasamsir Nasamsir Nasamsir Nasamsir Pandu Kriswibowo Prasetyo Hady Saputro Rahmana, Billy Aditia Rahmanto Wibowo Ramadhani, Rizky Fajriah Ridawati Marpaung Robi Aldinardo Rudi Hartawan Sandora, Amelia SANTI, IDA NUR Selly Febrina Situmorang, Leonardo Tamoko Susi Rahayu Tari Rahayu Wahyu Renaldi Yulistiati Nengsih Yuni Putri Ayu Yuza Defitri Yuza Defitri