Garuda - Garba Rujukan Digital

p-Index From 2021 - 2026

0.751

P-Index

This Author published in this journals

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

Claim Missing Document

Articles

1 2 3 4

PENGARUH PENGGUNAAN PUPUK HAYATI TERHADAP PERTUMBUHAN TANAMAN BELUM MENGHASlLKAN (TBM I) KOPI ROBUSTA (Coffea canephora Pierre ex Froehner) Junaedi, Ahmad; Wachjar, Ade; Rahman, Achirul
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 27 No. 2 (1999): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

This experiment was aimed to study the effect of biofertilizer on growth of young Robusta coffee. New planting of Robusta coffee BP 42 x BP 358 was used with Randomized Complete Block Design and 3 replications. Treatments were fertilization as follows : P1 (20 g EMAS + 50 % recognized dosage of inorganic fertilizer (d.a.p.a.)), P2 (10 ml EM 4 + 50 % d.a.p.a.), P3 j (25 g OST + 50 % d.a.p.a.), P4 (5 kg manure + 50 % d a.p.a.) and P5 (d.a.p.a., 23 g Urea, 28 g SP36 and 16 g KCI). The results showed that sum couple, length and sum node of plagiotrophic stems were significantly different from 2 till 6 month after treatment, but it were not significantly different for height and stem diameter: Manure + 50 % d.a.p.a. was the best responses for all variables. EMAS + 50 % d.a.p.a. and EM 4 + 50 % d.a.p.a. had responses as good as inorganic fertilizer: Whereas, OST+ 50 % d.a.p.a. had the lowest responses for all variables.

PENGARUH CARA DAN SIKLUS PETIK TERHADAP PRODUKSI DAN MUTU PUCUK TANAMAN THE (Camellia sinensis (L.) O. Kuntze) PRODUKTIF KLON RANCA BOLANG (RB) 3. Wachjar, Ade; Supiyatno, ,; Damayanty, Grace Prilensia
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 26 No. 3 (1998): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The objective of this experiment was to evaluate the effect of plucking method and cycle on shoot production and quality tea. The experiment was conducted at Gedeh Plantation, PTPN VIII, Cianjur, West Java from February to April 1997. The experiment was arranged in Randomized Block Design with 3 replications. The First factor was plucking method, consisted of hand plucking and scissor plucking. The second factor was cycle consisted of 3 levels: 3, 6, and 9 days. The result releaved that scissor plucking gave better production and better quality than hand plucking method, 9 days plucking cycle gave better production than 3 and 6 days plucking cycle, however 3 days plucking cycle gave better quality than 6 and 9 days plucking cycle. The highest production was obtained by combinations of 3 days plucking cycle with hand plucking

PENGARUH PUPUK BORON (B) DAN SENG (Zn) TERHADAP LAYU PENTIL DAN BUAH KAKAO (Theobroma cacao L.) YANG DAPAT DIPANEN Kurniawati, Ani; Wachjar, Ade; Sinaga, Anita Th.
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 26 No. 3 (1998): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The experiment was aimed to study the effect of B and Zn on Cherelle Wilt and cacao production. The experiment was conducted at Rajamandala Plantation from March to September 1997. Randomized Complete Block Design was used in this experiment with two factor and three replications. The first factor was 4 levels concentration of B fertilizer : 0 ppm Borax (BO), 3350 ppm Borax (B1), 6700 ppm Borax (B2), and 10050 ppm Borax (B3). The second factor was 4 levels concentration of Zn fertilizer : 0 ppm ZnSO4 (S0), 1250 ppm ZnSO4 (S0), 2500 ppm ZnSO4 (S0), and 3750 ppm ZnSO4 (S0). The result showed that B fertilizer decrease the cumulative numbers of new cherelle, cherelle wilt, good cherelle, and cacao production. Zn fertilizer did not influence all of the parameters. Interaction of B and Zn fertilizer increase the cumulative number of new cherelle and decrease the cumulative numbers of cherelle wilt.

PENGARUH DOSIS INOKULUM CENDAWAN MIKORIZA ARBUSKULA (GIGASPORA ROSEA) DAN PUPUK NITROGEN TERHADAP PERTUMBUHAN BIBIT KOPI ROBUSTA Wachjar, Ade; Setiadi, Yadi; Hastuti, Tirsa Rachma
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 26 No. 2 (1998): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The experiment was aimed to study the effect of Gigaspora rosea inoculant and nitrogen fertilizer on the growth of coffee Robusta seedling. Coffee seedling which were used came from seedling of hybrid variety from BP 42 and BP 358 crossing, age 1 month. Micorrhiza fungi inoculations which were used came from Gigaspora rosea species. The experiment was conducted at Sukamantri Experiment Station Bogor Agriculture University, from December 1996 to August 1997. The experiment was arranged in Randomized Block Design with three replications. The first factor was dosage of micorhiza inoculation, consisted of 0, 5, 10 and 15 g/seedling. The second factor was dosage of nitrogen consisted of 0, 1.5, 3.0 and 4.5 g/seedling. Fungi inoculation treatment in the dosage 15 g/seedling showed the highest infection percentage but can not increase the growth of coffee seedling. Fungi inoculant in the dosage 5 g/seedling gave the best growth level, showed by variety height of seedling, trunk diameter; leaves total and leaves area, shoot and root biomass, compare to the other fungi inoculation dosages. The highest level of nitrogen in leaf was found in the dosage 4.5 g/seedling. Fungi inoculation in the dosage 5 g/seedling and nitrogen fertilizer in the dosage 3 g/seedling gave the highest level of leaves area and shoot biomass, compare to the other treatment combinations.

PENGARUH JUMLAH AJIR DAN JUMLAH DAUN PADA AJIR TERHADAP PERTUMBUHAN TUNAS DAN SAAT MANJING PETIK PERTAMA PADA PEMANGKASAN AJIR TANAMAN TEH (Camellia sinensis L.) DI DATARAN TINGGI Wachjar, Ade; Supijatno, ,; Nasution, Riswan Basyri
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 23 No. 1 (1995): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The experiment was aimed to study the effect of number of lungs and leaves at lung to growth of shoots and first time harvest at lung pruning of height land tea (Camellia sinensis). The experiment carried out at Gedeh Tea Plantation, PTPN XII, Cianjur, West Java, from December 1993 to March 1994. In this case we used tea Clone TRI 2025. The experiment was arranged in Randomized Block Design with 3 replications. The first factor, number of lungs, consisted of 3 different level : 2, 3, 4 lungs per tea. The second factor, number of leaves at lung, consisted of 3 different levels : 25, 50, and 75 leaves per lung. The Experiment showed that number of shoots and first time harvest affected by number of lungs, but number of lungs didn't affect to height of shoot, percentage of banji, wet weight shoots on tipping and first pluck production were not affected. The tea with 4 lungs had significantly greater number of shoots than 2 or 3 lungs. The earliest first harvest time was achieved by 2 lungs tea (3 to 9 days earlier), but was significant with 3 lungs tea.

PENGARUH PUPUK FOSFOR DAN KALIUM TERHADAP PERTUMBUHAN DAN HASIL BENIH KENAF (Hibiscus cannabinus L.) PADA TANAH LATOSOL Wachjar, Ade; Sutidjo, Donathus; Bahri, Syaiful
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 22 No. 1 (1994): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The experiment was aimed to study the effects of phosphorous and potassium fertilizers on growth and seed yield of kenaf on Latosol. The experiment was carried out at Tajur Experimental Station, IPB Bogor, from January 1991 to July 1991. The seed germination test was held in the Laboratory of Seed Science and Technology IPB, Bogor. Kenaf variety Hc-48 was used in this experiment. The two factor factorial experiment was arranged in Randomized Block Design with 3 replications. The first factor was 4 levels of phosphorous fertilizer: 0, 30, 60 and 90 kg P2O5/ha. The second factor was 3 levels of potassium fertilizer: 0, 60 and 120 kg K2O/ha. Phosphorous and potassium fertilization each increased significantly plant height, stem diameter, the number of mature and total fruit per plant, seed yield per hectar: however there were no significant effect on percentage of mature fruit, number of seeds per fruit, weight of 1,000 seeds and seed germination. The dosage of phosphorous fertilizer until 90 kg P2O5/ha still increased yield linearly, otherwise the optimum dosage of potassium fertilizer was reached on 69.31 kg K2O/ha with seed yield 2,036.48 kg/ha. There was no interaction effect between P and K fertilization.

Optimasi Dosis Pupuk Majemuk NPK dan Kalsium pada Bibit Kelapa Sawit (Elaeis guineensis Jacq.) di Pembibitan Utama Ramadhaini, Rizki Fauziah; ., Sudradjat; Wachjar, Ade
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 42 No. 1 (2014): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

ABSTRACTThis research was aimed to evaluate the rates of NPK and calcium fertilizers for the growth of oil palm seedling at main nursery. It was conducted in IPB Experimental Station, Cikabayan, Darmaga, Bogor from December 2011 to November 2012. The two factors, NPK and calcium, were arranged in a randomized block design with three replications. The rates of NPK fertilizer (15-15-15) were 0, 115, 230 and 460 g seedling-1. The rates of calcium fertilizer were 0, 5, 10 and 20 g seedling-1. There was no interaction effect observed between NPK and calcium fertilizer. NPK fertilizer, however had the significant quadratic effect on plant height, leaf number, stem diameter and chlorophyll content. Based on morphology variables, recommended optimum rate of NPK 15-15-15 fertilizer was 333 g seedling-1 for eight months. Thus, NPK rates were 7.00, 7.00, 19.45, 59.25, 66.3, 61.55, 58.97 and 54.16 g seedling-1 from first to eight month respectively. The optimum rate of calcium fertilizer was not determined in this experiment.Keywords: NPK 15-15-15, nutrient, optimum rates, recommendation

Optimasi Dosis Pupuk Nitrogen dan Fosfor pada Bibit Kelapa Sawit (Elaeis guineensis Jacq. ) di Pembibitan Utama ,, Sudradjat; Darwis, Anita; Wachjar, Ade
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 42 No. 3 (2014): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

ABSTRACTThe total area of oil palm plantation has grown rapidly in Indonesia since the last three decades. Oil palm extensification and replanting need high quality seedlings. Accurate rate of nitrogen and phosphor fertilizer are key factors to obtain high quality seedlings. The objective of this experiment was to determine the optimum rate of nitrogen and phosphorus fertilizers for oil palm seedling (Elaeis guineensis Jacq.) in main nursery and to obtain seedlings ready for field planting. This experiment was carried out at IPB Experimental Station, Cikabayan Dramaga, Bogor, from November 2011 to May 2012. The experiment was arranged in a factorial randomized block design with three replications. The first factor was N i.e. 0, 8.51, 17.02, and 34.04 g N plant-1 and the second was P i.e. 0, 2.28, 4.56, and 9.12 g P plant-1. The result of the experiment showed that vegetative growth increased with fertilizer application. The height of plant were affected by interaction between N and P significantly. The total leave number and stem diameter increased quadratically with fertilizer rate of N and were linearly increased with application of P. Application of N fertilizer influenced the chlorophyl content only at 5 months after planting, and did not significantly affect the stomatal density. The result of leaf analysis showed that nitrogen and phosphor content respectively were 3.43% and 0.28%, where both of them were above the critical level. The optimum rate of N for oil palm seedling during six months at the main nursery was 20.06 g plant-1, whereas P was 4.24 g plant-1.Keywords: fertilizer recommendation, physiological respons, vegetative growth

Pertumbuhan Mucuna bracteata DC. pada Berbagai Waktu Inokulasi dan Dosis Inokulan Laksono, Purwanti Budi; Wachjar, Ade; Supijatno, dan
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 44 No. 1 (2016): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

ABSTRACTMucuna bracteata DC. is a legume cover crop to prevent erosion and to suppress weed growth. M. bracteata can fix N2 from the air with the help of Rhizobium. M. bracteata get benefit from the symbiosis in the form of increased nodule weight, shoot dry weight, and leaf nitrogen content when the Rhizobium population in the soil is optimal. Application of inoculant is one method to increase the Rhizobium population in the soil. This study aimed to analyze the effects of inoculation times and inoculant rates on M. bracteata growth. The research was conducted in Boyolali, Central Jawa, from February to August 2014. The inoculant contained Bradyrhizobium japonicum and Aeromonas punctata. This experiment was arranged in a randomized block design with two factors and three replications. The first factor was two inoculation times, i.e at the nursery when the seedlings were 2 weeks old and in the field when the seedlings reached 5 weeks old. The second factor was 5 inoculant rates (0, 2, 4, 6, and 8 g per plant). The results showed that inoculation on 5-week-old seedlings was the best result compared to the 2-week-old seedlings. The recommended inoculant rate for Mucuna bracteata was 6.43 g per plant. Keywords: legume cover crop, nitrogenase activity, nodule, nutrient content, runner

Tree-based Water Footprint Assessment on Established Oil Palm Plantation in North Sumatera, Indonesia Santosa, Edi; Stefano, Indra Mario; Gani Tarigan, Abdul Gani; Wachjar, Ade; Zaman, Sofyan; Agusta, and Herdhata
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 46 No. 1 (2018): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

ABSTRACTIn a long life cycle of oil palm plantation, sustainable water management is mandatory because irrigation is rarely applied. In order to develop water management for sustainable palm oil production, tree-based water footprint of well-established oil palm plantation was assessed. Field data were collected from February to June 2016 in Dolok Ilir managed by PTPN IV, North Sumatera, Indonesia. Additional data were obtained from interviews on the site and the surrounding estates, reports and references. Results showed that water footprint (WF) for production of fresh fruit bunch (FFB) was 510.69 m3 tonne-1 and crude palm oil (CPO) was 517.79 m3 tonne-1. Green, blue and grey water contributed 94.78%, 0.71% and 4.50% in FFB, and 93.48%, 1.66% and 4.85% in CPO productions, respectively. All green WF was calculated basen on actual value of tree evapotranspiration, therefore, the value was mostly lower than other researchs. Low amount of blue water indicates that the oil palm tree in North Sumatera extracts low amount of ground water. On the other hand, grey water for pollution dilution of fertilizers, pesticides and herbicides were high, i.e., 15.15 m3, 4.77 m3, 3.07 m3 tonne-1 FFB, respectively. It implies that reduction of grey water should be implemented in the near future through precission farming.Keywords: CPO, Elaeis guineensis, precission farming, sustainable production, water footprint

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

Title

Found 33 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 33 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 33 Documents
Search