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Planta Tropika
Published by Universitas Muhammadiyah Yogyakarta
ISSN : 0216499X     EISSN : 25287079     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
PLANTA TROPIKA : Jurnal Agrosains (Journal of Agro Science) provides a forum for researchers on applied agricultural science to publish the original articles. PLANTA TROPIKA published two times a year (February and August) by Universitas Muhammadiyah Yogyakarta in collaboration with Indonesian Association of Agrotechnology / Agroecotechnology (PAGI). Planta Tropika focuses related to various themes, topics and aspects including (but not limited) to the following topics Agro-Biotechnology, Plant Breeding, Agriculture Waste Management, Plant Protection, Soil Science, Post Harvest Science and Technology, Horticulture.
Arjuna Subject : -
Articles 427 Documents
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Kajian Komposisi Jalur Hijau Jalan di Kota Yogyakarta Terhadap Penjerapan Polutan Timbal (Pb) Fadlhinsyah Damanik
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 2, No 2 (2014)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.2014.027.81-89

Abstract

This research aims to examine the composition of the green belt and its ability to adsorb particles of lead (Pb), determine the amount of particulate emissions of lead in the ambient air resulting from vehicle traffic activities and evaluate the composition of green belt some streets. The research was conducted using a survey method, the technical implementation is done by observation, questionnaires and secondary data collection. Sampling was done by purposive sampling is the selection of the sample with certain considerations deemed relevant according to the research objectives. Data were analyzed descriptively. The result showed that the green belt in three streets was dominated by Angsana trees (Pterocarpus indicus) form a line 1 (one) row crops. The composition of the green belt type, quantity, function, size, and distribution of plants available have not been able to reduce the concentration of lead (Pb) and thus require rearrangement. The roads planted with tree of Angsana (Pterocarpus indicus) and Tanjung (Mimusops elengi) had concentrations of lead (Pb) lower, as much as 1,39 µg/m3 at Urip Sumoharjo and as much as 1,11 µg/m3 at Laksda Adisucipto compared the road that only planted tree of Angsana (Pterocarpus indicus) is contained at Ahmad Dahlan with (Pb) concentration as much as 1,56 µg/m3. Concentrations of lead (Pb) in the third road was approaching the threshold value, but still below the quality standards specified.
Litterfall Production and Decomposition in Three Types of Land Use in Bengkulu Protection Forest Enggar Apriyanto; Fajrin Hidayat; Putranto BA Nugroho; Imanta Tarigan
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 9, No 1 (2021)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v9i1.4019

Abstract

Most of the social forestry program plantations in Bengkulu are in the form of mixed planting of coffee or rubber trees. The type of land use affects the production and decomposition of litterfall, which play an important role in nutrient cycle. The aim of the research was to determine the production and decomposition rate of litterfall in coffee (Coffee robusta) monoculture, coffee and Gliricidia sepium (gliricidia) agroforestry, and rubber (Hevea brasiliensis) monoculture. The research was arranged in a systematic design with three treatments and fifteen replications. The variables measured included production, composition, and decomposition rate of litterfall. The collected data were analyzed using T-test. According to the results, the litter production in coffee monoculture, agroforestry of coffee and gliricidia, and rubber monoculture was 1051.5, 1001.5, and 662.5 Kg ha-1 4 months-1 with the decomposition rate about 5.13, 4.25, and 5.28 gr m-2 4 months-1, consecutively.  The litterfall composition in the three types of land use consisted of leaf, twig, fruit, and flower. Leaf was the highest component of litterfall in coffee monoculture, agroforestry of coffee and gliricidia, and rubber monoculture, reaching 830.2 (78.99%), 646.7 (64.73%), and 391.0 (59.01%) kg ha-1, respectively. Nutrition analysis of leaf litterfall indicated that the highest content of C, N, P, and K was observed in agroforestry of coffee and gliricidia compared to other plantation types.
Evaluasi Lapang Rekomendasi Pemupukan Padi Sawah Berdasarkan Pemupukan Hara Spesifik Lokasi Berbasis Internet di Jawa Tengah Indonesia Samijan Samijan; Tri Reni Prastuti; Warsito Warsito
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 5, No 1 (2017)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.2017.068.23-33

Abstract

At the recent, guide of Site Specific of Nutrient Management (SSNM) was developed by International Rice Research Institute (IRRI) in collaboration with Indonesia Agency for Agriculture Research and Development (IAARD) through online media based on internet website. To establish this recommendation technology, field evaluation of SSNM online application based on NM-Rice website was conducted. The assessment was conducted in Trayu and Dukuh Village of Banyudono Sub District of Boyolali District of Central Java Indonesia on dry season 2013 (May-September 2013). The assessment result showed that SSNM rice yield of about 63,2% of farmers in Trayu Village higher than FFP. Yield gap difference of SSNM online varied about 1-20% higher than FFP, whereas the others are almost similar until lower than FFP yield, by variation about 1-11%. The assessment of fertilizer recommendation in Dukuh Village showed that only about 33,3% of farmers cooperator have SSNM yield higher than FFP. Whereas, the others have SSNM online yield lower than FFP which its involved about 10% of farmers have similar yield between SSNM and FFP. An average of NPK rate of SSNM online in Trayu Village is lower than FFP. SSNM online rate for N fertilizer recommendation in this location are about 133 kg/ha  (93,9% lower than FFP), P2O5 about 38 kg/ha (73,8% lower than FFP), and K2O about 38 kg/ha (14,5% lower than FFP). Whereas in Dukuh Village, N rate of SSNM online recommendation are about 131 kg/ha (109,7% lower than FFP), P2O5 about 31 kg/ha (29,3% higher than FFP) and K2O about 30 kg/ha (63,3% higher than FFP). Generally, fertilizer recommendation based on SSNM online have benefit about 4,43% from existing.
Pengaruh Macam Pupuk Organik Terhadap Pertumbuhan dan Hasil Jagung Manis (Zea mays-saccharata, Start) Sukuriyati Susilo Dewi; Bambang Heri Isnawan; Dwi Purwana
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 1, No 1 (2005)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v1i1.3105

Abstract

A field research to observe the effect of kinds of organic manure and on growth  and yield of sweet  corn  was  done  in Danguran   village,  Klaten  Regency  of Midle Java. The research was conducted during August to October 2003. The field experiment was arranged in a Randomized Complete Block Design, with 3 replications. The kinds of organic manure treatment consisted of 5 levels which are: no farm manure (PKO), chicken farm manure (PKl), vermicompost or Kascing (PK2), cow farm manure A (PK3), and cow farm  manure-B (PK4). Each organic matter given was 10 ton /ha. The result showed that the chicken farm manure gave the significantly higher growth and yield  of sweet  corn  than  the others.  The average sweet corn yield obtained in this research was 16,2 ton/ha.
Front Matter Planta Tropika: Jurnal Agrosains (Journal of Agro Science) Vol. 8 No. 1 Manager, Journal
PLANTA TROPIKA Vol 8, No 1 (2020)
Publisher : Department of Agrotechnology, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/planta tropika.v8i1.11291

Abstract

Penetapan Standar Warna Daun Sebagai Upaya Identifikasi Status Hara (N) Tanaman Jagung (Zea mays L.) pada Tanah Regosol Nugroho, Wisnu Sapto
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 3, No 1 (2015)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.2015.034.8-15

Abstract

A study aims to determine a standard of green color on corn leaves as marker of nitrogen adequacy. A study was conducted in the field of Universitas Muhammadiyah Yogyakarta. The experiment was arranged in a completely randomized design (CRD, which consisted of 7 treatments: 125 kg N/h (N1), 150 kg N/h (N2), 175 kg N/h (N3), 200 kg N/h (N4), 225 kg N/h (N5), 250 kg N/h (N6), and 275 kg N/h (N7). The result showed that the scale between 5GY 5/8 and 5GY 6/8 was the best Leaf color scale to identify Nitrogen condition on corn yield at range of 250 kg N/h and 275 kg N/h. The dose of 250 kg N/h resulted the highest plant height of corn. The dose of 275 kg N/h resulted the highest seed weight per ear and grain weight of 100 seeds at 14% moisture content.
Impacts of El Niño Climate Anomaly on Irrigation Scheduling of Maize Crop Using Budget Models under Tropical Climate Conditions Imanudin, Momon Sodik; Bakri, Bakri; Y, Karimuddin; Ratmini, P.
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 6, No 1 (2018)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.2018.080.49-61

Abstract

The research aims to calculate the water requirement and irrigation interval of maize crop as well as to design water-efficient irrigation application system. The study was conducted on dry land of Palembang city of South Sumatra. The indicator crop used in this study was maize. Daily climate data were taken from Sultan Mahmud Badarudin and Kenten station. The research applied survey method, laboratory analysis, computer simulation and irrigation design. The calculation of water crop deficiency was done using empirical approach by multiplying the potential evapotranspiration value by crop coefficient. Soil water retention characteristic was recorded based on the calculation of the length of water available to plants. Daily rainfall in the field was recorded as water input other than water from irrigation. The combination of soil, climate and plant physiological properties (Agro-pedo-climatic) will result in a water irrigation system in a region. Water balance analysis was developed by the help of computer model (BUDGET model). The result of computer model analysis shows that maize crop in rainy season does not require irrigation. While for the transition period (March-May), irrigation is required for the flowering phase with a total water requirement of 76.5 mm. During dry season (May-July), irrigation is required with water requirement of 198 mm. Irrigation scheduling is set up 9 times with intervals every 7 days at the beginning of growth and 10 days at the middle and end. While the testing under dry climate conditions (El Niño) using rainfall data in 2015 indicates irrigation should be given since March and during planting period (May-August 2015) the irrigation should be applied 12 times with intervals every 5 days at the initial stage and 10 days during vegetative stage.
Direction, Panel Height, and Tapping Frequency Affect The Daily Bark Consumption in Hevea Rubber Tapping Junaidi, Junaidi; Atminingsih, Atminingsih; Darojat, Muhammad Rizqi
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 7, No 1 (2019)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.2019.094.58-65

Abstract

Bark consumption is defined as the thickness of sliced bark per time unit. This research, aiming to identify the effects of direction, panel height, and tapping frequency on daily bark consumption, was carried out at Sungei Putih Research Center, North Sumatera and several estates in Lampung (Kedaton, Bergen, and Way Lima) from January to March 2018. The observations involved 15 tapping tasks consisting of GT 1, PB 260, and mixed clones. Bark samples were collected from 10 randomized trees in each task. Tapping direction was distinguished as downward tapping and upward tapping, while panel height was classified into 50 cm, 50 – 100 cm, and 100 – 130 cm in downward tapping and 130 – 150 cm, 150 – 170 cm, and 170 cm in upward tapping. Tapping frequency effect was investigated in a trial plot using frequency of once in three days (d3), once in four days (d4), once in five days (d5), once in six days (d6), and once in eight days (d8) on the basal panel (B0-2). Bark consumption was measured directly using a digital caliper. The observation result indicated that upward tapping had higher bark consumption than downward tapping. In downward tapping, the lower tapping position, the higher bark consumption would be, whilst in upward tapping, bark consumption increased along with the panel height. Low tapping frequency (d4, d5, d6, and d8) showed higher bark consumption per tapping than d3, yet they had lower cumulative bark consumption per year.
Pengaruh Kombinasi Pupuk Kandang Sapi dan Abu Sabut Kelapa sebagai Pupuk Utama dalam Budidaya Tanaman Brokoli (Brassica oleracia L.) Eko Binti Lestari
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 4, No 2 (2016)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.2016.061.95-100

Abstract

This research aims to study the effectiveness of coconut fibre ash as an additive nutrient for growth and yield of Broccoli (Brassica oleracia L.), and to determine the best combination between manure and coconut fibre ash in organic farming of Broccoli. This research conducted using single factor experiment that arranged in Randomized Completely Block Design (RCBD). The treatments are (1) Manure 0,75 kg + Coconut fire ash 24,3 g (2) Manure 0,75 kg + Coconut fibre ash12,15 g, (3) Manure 0,75 kg + without Coconut fibre ash, (4) Manure 1 kg + Coconut fibre ash 24,3 g, (5) Manure 1 kg + Coconut fibre ash 12,15  g, (6) Manure 1 kg + without coconut fibre ash, (7) Manure 1,25 kg + Coconut fibre ash 24,3 g, (8) Manure 1,25 kg + Coconut fibre ash 12,15 g, (9) Manure 1,25 kg + without coconut fibre ash. The result showed that the combination between manure and coconut fibre ash have not significantly different in number of leaves, flowering time, fresh weight, flower size, fresh weight of flower. However, the combination between manure 1,25 kg and coconut fibre ash 24,3 g is considered to be the most efficient in organic farming of Broccoli.
Front Matter Planta Tropika: Jurnal Agrosains (Journal of Agro Science) Vol. 8 No. 2 Manager, Journal
PLANTA TROPIKA Vol 8, No 2 (2020)
Publisher : Department of Agrotechnology, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v8i2.11295

Abstract

Page 29 of 43 | Total Record : 427

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