cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kab. bantul,
Daerah istimewa yogyakarta
INDONESIA
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
 31   32   33   34   35 
Ulasan (Review) Pemasyarakatan Penggunaan Pestisida Nabati Dalam Mendukung Agribisnis E. W. Wiranti
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 1, No 2 (2005)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v1i2.3123

Abstract

Pestisida  sintetis  hingga  saat ini masih  menjadi  andalan  dalam  meminimalkan kehilangan hasil  akibat  serangan organisme pengganggu tanarnan (OPT).   Meskipun dampak negatif dari penggunaan pestisida sintetis banyak ditimbulkan, namun petani  masih  sangat membutuhkannya. Oleh karena itu media media diperlukan alternatif lain, yaitu penggunaan pestisida  yang ramah lingkungan agar aman bagi manusia  dan lingkungan, salah satunya adalah  dengan  menggunakan pestisida  nabati  yang bahan dasarnya  berasal  dari tumbuhan. Di Indonesia penggunaan   pestisida nabati  mempunyai  prospek yang baik, selain menghemat devisa  juga  mendukung   agribisnis  dan kelestarian lingkungan. Oleh karena itu pemasyarakatan  penggunaan pestisida nabati perlu dilakukan.
Comparison of destructive and non destructive method in maturity index of Garcia mangostana Indira Prabasari
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 6, No 2 (2018)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.2018.086.100-105

Abstract

Postharvest maturity index for mangosteen (Garcinia mangostana L) is very important for picking and grading during postharvest processing. Skin color change is the primary maturity index for mangosteen. However, determination using human eyes needs many skilled labours and is inconsistent. Therefore, new method in image processing technology using SVM (Support Vector Machine) was employed in this study. Chemical analysis of mangosteen was performed and used as a reference of SVM method. The chemical analysis of mangosteen showed that anthocyanin content increased from 126.20 ppm at stage 1 to 213.98 ppm at stage 6. Reducing sugar content increased from 3.17% at stage 1 to 7.92% at stage 6. The same pattern was found for total soluble solid, an increase from 3.86% at stage 1 to 7.81% at stage 6. Whereas for total acid content and hardness the pattern was the opposite. Total acid content was decreased from 1.78% at stage 1 to 1.06% at stage 6 and the fruit hardness of mangosteen was also declined, showing the number from 4.30 N at stage 1 to 0.69 N at stage 6. For SVM method, image aquisition was conducted for mangosteen images from stage 1 to stage 6, followed by color feature extraction for each stages. The result was trained and tested using SVM and resulted accuracy level of 83.3%. 
Identification of Changes in Water Catchment Areas in Kulon Progo District Using Geographic Information Systems Lis Noer Aini; Ratri Sekarsari; Bambang Heri Isnawan
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 8, No 2 (2020)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.2020.120.103-113

Abstract

Water is the basic needs of living things in this world. Infrastructure development that increased would cause the needs of water. Therefore, it has to be balanced with manage the good plan of water absorption region in an area. This research has been done in Kulon Progo districts that aimed at made maps and map the potential of water absorption region in Kulon Progo districts. The method used in this research was the tiered quantitative analysis survey with Geography Information System (SIG) software with the weighting parameter categorize model using overlap techniques in each parameter. The parameters were kind of rocks, rainfall, used land, and slope of the land. The data of the research was secondary data. Those were administration map, Topographical map, land used map, rainfall data, Shuttle Radar Topography Mission (SRTM), and soil map. The result of this research showed that water absorption region in Kulon Progo with dominated suitability condition in unsuitable class as wide as 32.804 ha followed by class as wide as 17.124 ha, and the smallest was class condition quite appropriate as wide as 7.976 ha.
Pengaruh Pupuk NPK Pelet dari Kotoran Ayam terhadap Pertumbuhan dan Hasil Tanaman Kedelai (Glycine max l.) di Tanah Regosol Anggi Aprian Murselindo
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.2014.026.74-80

Abstract

The research was conducted to determine the appropiate dose of NPK chicken manure pellets to increase the growth and yield of soybean crops in the regosol soil. The method of this research was used experimental research with single factor which is arranged in Completaly Randomized Design (CRD). The treatments were 50 kg/h Ure + SP-36 150 g/h + KCI 100 kg/h (KO), NPK of chicken manure pellets 500 kg/h (K1), NPK of chiken manure pellets 1tons/h (K2), NPK of chicken manure pellets 1.5 ton/h (K3) NPK of chicken manure pellets 2 tons/h (K4), NPK chicken manure pellets of 2,5 tons/h (K5). The results of this research showed that NPK fertilization with chicken manure pellets can replace urea fertilizer recommendation simultaneously Multitusting as much as 80% SP36 53,3% and KC160% in soybean cultivation on Regosol soil and a dose of 500 kg/h NPK chicken manure pellets was more efective to growth and yield of soybean.
Response of Black Madras Purple Rice to Pruning and Application of Unitas Super Liquid Organic Fertilizer Jamilah Jamilah; Widodo Haryoko; Weki Akriweldi
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.2019.090.26-32

Abstract

Indonesian rice yields are still relatively low. One of the efforts to increase the yield of rice plants is to trim the foliages before flowering, in addition to the application of ‘Unitas Super’ liquid organic fertilizer (LOF). The study was carried out in the Lubuk Lintah Village, Padang City in May - September 2017. The aim of the study was to investigate the effectiveness of pruning, as a source of forage, and the concentration of ‘Unitas Super’ liquid organic fertilizer in improving rice yields. The experiment was arranged in split plot design with main plots consisting of 2 levels, namely pruning at 45 days and without pruning. The subplots consisted of 3 concentrations of ‘Unitas Super’ liquid organic fertilizer, namely 0 ml L-1, 50 ml L-1, and100 ml L-1. All treatments were replicated 3 times. Data were analyzed statistically using the F test at 5% and tested using LSD at 5%. According to the results of the observations, it can be concluded that pruning reduced the weight of 1000 seeds and panicle length, but did not reduce the yield of harvested dry grain and harvest index. Application of ‘Unitas Super’ liquid organic fertilizer did not significantly increase the growth and yield of Black Madras purple rice. The highest dry grain yield was 4.04 t ha-1 observed in plants sprayed with 50 ml L-1 ‘Unitas Super’ liquid organic fertilizer without pruning treatment.
Pengaruh Cairan Pembersih Lumut dan Pupuk Anorganik terhadap Pertumbuhan Tanaman Teh (Camellia Sinensis (L.) O. Kuntze) Asal Biji Setelah Dipangkas Intan Ratna Dewi Anjarsari
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 3, No 2 (2015)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.2015.043.78-86

Abstract

A study examines the effect of moss removal and inorganic fertilizers on the growth of the tea (Camellia sinensis (L.) O.Kuntze) derived from seed after pruning. This research was conducted at the Research Center of Tea and Quinine in Gambung, Ciwidey.The research was managed using factorial experiment that arranged in Completely Randomized Design 4 x 4 with three replications. The first factor was the concentration of moss removal i.e. 0%, 1%, 2% and 3%. The second factor was the dose of inorganic fertilizer i.e. 100%, 80%, 60% and 40%. The result showed that there was no interaction between moss removal and inorganic fertilizer. In 2 % of moss removal showed the better result than 1% and 3% of moss removal in shoot numbers, shoot fresh weight, shoot dry weight. Inorganic fertilizer with 80% doses showed better result than doses 100%, 60% and 40% in shoot numbers, shoot fresh weight, shoot dry weight.
Susceptibility of Sorghum Cultivars to Sitophilus oryzae L. (Coleoptera: Curculionidae) During Storage Hendrival Hendrival; Rengga Laksamana Putra; Dewi Sartika Aryani
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 7, No 2 (2019)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.2019.100.110-116

Abstract

Sitophilus oryzae L. is a primary pest that causes damage to stored sorghum. The aim of this study was to evaluate the susceptibility of some sorghum cultivars to S. oryzae infestations and the damage resulted during storage period. The research was carried out at Plant Pest and Disease Laboratory, Department Agroecotechnology, Faculty of Agriculture, Malikussaleh University from February to June 2017. Nine cultivars of sorghum were screened for their susceptibility to S. oryzae attacks and the damage resulted. The Dobie sesceptibility indexwas used to classify the susceptibility of sorghum cultivars. Susceptibility experiment of several sorghum cultivars to S. oryzae was done by no choice assay. The results exhibited that sorghum cv. Suri 3, Suri 4, Kawali, and Numbu was categorized as moderate. Cv. Samurai 1 was included in moderate to susceptible, and cv. Super 1, Super 2, Samurai 2, and Pahat were categorized as susceptible to S. oryzae. The susceptibility of sorghum cultivars was determined by high number of F1 progeny, the high percentage of seed weight loss, damaged seeds, low median development time and low width of sorghum seeds.
Kajian Penggunaan Pupuk Organik pada Sistem Usahatani Bawang Merah di Serang Banten Resmayeti Purba
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 4, No 1 (2016)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.2016.049.1-6

Abstract

Yield of shallot bulbs in Banten still low because famers do not use organic fertilizers. This study aims to study the effectiveness of organic fertilizers combined with inorganic fertilizer on the growth and yield of shallot. This study was conducted in farmers’ fields in Sawahluhur village, district Kasemen, Serang. Studies used a randomized complete block design consisting of 5 treatments and 4 replications. The varieties used are Bima. The results showed that the use of organic fertilizers in combination with inorganic fertilizers provide a good influence on the growth and yield of shallots. The use of organic artificial fertilizer 5.000 kg//ha + Urea 100 kg/ha+ SP-36 200 kg/ha + 300 kg/ha NPK Phonska resulted in higher yield of tubers and profits than without organic fertilizer on shallots farming.
The Use of Biofilmed Biofertilizer to Improve Soil Chemical Fertility and Yield of Upland Kangkung (Ipomoea reptans) on Vertisol Sudadi Sudadi; Ega Yuana Putri; Suntoro Suntoro
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 8, No 2 (2020)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.2020.118.83-92

Abstract

The application of biofilm biofertilizer is potential to improve soil fertility and increase plant yield. The research aimed to assess the use of organic fertilizer decomposed with biofilm biofertilizer to improve soil fertility and yield of upland kale in Vertisol. The field experiment was conducted in Vertisol at Jaten, Karanganyar, Central Java, arranged in a Randomized Complete Block Design with a single factor, which was organic fertilizer dose consisting of 0, 3, 6, 9, 12, 15, 18, and 21 ton.ha-1 organic with NPK fertilizer as comparison treatment. Upland kale seeds were planted in 15 x 15 cm plant spacing. The variables observed were total nitrogen, available P, exchangeable K, soil organic matter, pH, cation exchange capacity, leaf number, plant height, fresh and dry weight. The data obtained were analyzed using F test followed by Duncan Multiple Range Test (DMRT) 95%. The result showed that the organic fertilizer dose had a significant effect on all of the observed variables. Optimal doses of organic fertilizer to improve soil fertility and upland kale yield was 15 - 18 ton.ha-1. The highest yield of upland kale was observed in the treatment of 21 ton.ha-1 organic fertilizer (76.5 ton.ha-1), which was increased by 176% compared to control (34.7 ton.ha-1) and by 108.8% (45.78 ton.ha-1) compared to NPK treatments. The application of 3 ton.ha-1 organic fertilizer gave better yield of upland kale than NPK fertilizer.
Planta Tropika: Jurnal Agrosains (Journal of Agro Science) Vol. 4 No. 1 planta tropika
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 4, No 1 (2016)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v4i1.2968

Abstract

Page 33 of 43 | Total Record : 427

 31   32   33   34   35 

Filter by Year

2005 2025


Reset
Filter By Issues
All Issue Vol. 13 No. 1 (2025) Vol 12, No 2 (2024) Vol 12, No 1 (2024) Vol 11, No 2 (2023) Vol 11, No 1 (2023) Vol. 10 No. 2 (2022) Vol 10, No 2 (2022) Vol 10, No 1 (2022) Vol 9, No 2 (2021) Vol 9, No 1 (2021) Vol 8, No 2 (2020) Vol 8, No 1 (2020) Vol 7, No 2 (2019) Vol 7, No 1 (2019) Vol 6, No 2 (2018) Vol 6, No 2 (2018) Vol 6, No 1 (2018) Vol 5, No 2 (2017) Vol 5, No 2 (2017) Vol 5, No 1 (2017) Vol 5, No 1 (2017) Vol 4, No 2 (2016) Vol 4, No 2 (2016) Vol 4, No 1 (2016) Vol 4, No 1 (2016) Vol 3, No 2 (2015) Vol 3, No 2 (2015) Vol 3, No 1 (2015) Vol 3, No 1 (2015) Vol 2, No 2 (2014) Vol 2, No 2 (2014) Vol 2, No 1 (2014) Vol 2, No 1 (2014) Vol 1, No 2 (2005) Vol 1, No 1 (2005) More Issue