scholarly journals Inventarisasi Jenis Gulma di Areal Perkebunan Karet (Hevea brasiliensis) Pada Ketinggian Tempat Yang Berbeda di Negeri Liang Kecamatan Teluk Elpaputih Kabupaten Maluku Tengah

2019 ◽  
Vol 15 (2) ◽  
pp. 80-91
Author(s):  
Dilyan N Ramlan ◽  
Johan Riry ◽  
Vilma L Tanasale
Keyword(s):  
Sea Level ◽  
Direct Observation ◽  
Hevea Brasiliensis ◽  
Survey Method ◽  
Rubber Plantation ◽  
Sample Plot ◽  
Weed Species ◽  
Purposive Sampling ◽  
Plot Size ◽  
Weed Survey

The purpose of this study was to analyze the types of dominant weeds in rubber plantation areas at altitudes of 4 m above sea level (asl) and 104 m asl and to find differences in the types of weeds in the rubber plantation areas at an altitude of 4 m asl and 104 m asl. This research conducted in Negeri Liang, Teluk Elpaputih District, Central Maluku Regency. This research used a "weed survey" method to collect data by direct observation in the field. This research was conducted by analyzing weed types using the quadratic method by purposive sampling with a sample plot size of 1 m × 1 m. From this study, it was found that there were 20 weed species from 14 families, with details of 11 species of full leaf weeds, 3 species of grasses, 3 species of sedges, in rubber plantation habitat in Liang Village, Teluk Elpaputih District, Central Maluku Regency. Keywords: plantation altitude, rubber plants, weeds   ABSTRAK Tujuan penelitian ini adalah untuk menganalisis jenis-jenis gulma dominan di areal perkebunan karet pada ketinggian 4 m dpl dan 104 m dpl dan untuk menemukan perbedaan jenis-jenis gulma di areal perkebunan karet pada ketinggian 4 m dpl dan 104 m dpl. Penelitian ini dilaksanakan di Negeri Liang Kecamatan Teluk Elpaputih Kabupaten Maluku Tengah. Dengan menggunakan metode “survey gulma” untuk mengumpulkan data dengan pengamatan langsung di lapangan. Dengan melakukan analisis jenis gulma digunakan metode kuadrat secara purposive sampling dengan petak sampel berukuran 1 m × 1 m. Penelitian ini di peroleh terdapat 20 jenis gulma 14 famili, dengan rincian gulma daun lebar 11 jenis, rerumputan 3 jenis, tekian 3 jenis, dan pakisan 3 jenis pada habitat perkebunan karet di Negeri Liang Kecamatan Teluk Elpaputih Kabupaten Maluku Tengah. Kata kunci: gulma, ketinggian tempat yang berbeda, tanaman karet

STUDI KOMUNITAS GULMA DI AREAL PERTANAMAN CENGKEH (Syzygium aromaticum L.) TANAMAN MENGHASILKAN PADA KETINGGIAN TEMPAT YANG BERBEDA DI NEGERI HATU KECAMATAN LEIHITU BARAT KABUPATEN MALUKU TENGAH

2017 ◽  
Vol 13 (2) ◽  
pp. 78-83
Author(s):  
Desti A I Hgairtety ◽  
Johan Riry ◽  
Vilma L Tanasale
Keyword(s):  
Weed Control ◽  
Survey Method ◽  
Syzygium Aromaticum ◽  
Sample Plot ◽  
Dominance Ratio ◽  
Plot Size ◽  
Weed Communities ◽  
Quadrat Method ◽  
Result Show ◽  
Weed Survey

Clove (Syzygium aromaticum L) is a spice to be cultivated in Mollucas, Recently the population of colve plant has be decressed as a result of weeds that impended the growth of clove, especially in the nursery phases. The identification of weeds is the first step in controlling weeds, however until now there has been no research on the influence of weed communities in important as the base of an accurate weed control. This research on weed composition in clove planting area is important as the base of an accurate is based on summed Dominance Ratio (SDR), the point was obtained from 100 m dpl, 200 m dpl and 300 m dpl at the productive plant in Hatu Vilagge, Village Central Mollucas District). This research using weed survey method type quadrat method with sample plot size 1 m × 1 m. The result show that 35 species of weed, 19 family, with details of weeds 23 broad leaves, 6 grasses, and 4 cyperaceae in the clove areal planting in Hatu village. Keywords: weed vegetation analiysis, clove plant, different altitude   ABSTRAK Tujuan penelitian ini adalah Untuk mengenal jenis-jenis gulma dominan di areal pertanaman cengkeh Tanaman Menghasilkan (TM) pada ketinggian 100 m dpl, 200 m dpl, 300 m dpl dan untuk mengenal perbedaan antara komunitas gulma di areal pertanaman cengkeh Tanaman Menghasilkan (TM) dengan ketinggian 100 m dpl, 200 m dpl, dan 300 m dpl. Penelitian ini di laksanakan di Negeri Hatu Kecamatan Leihitu Barat Kabupaten Maluku Tengah. Metode survei gulma digunakan untuk mengumpulkan data dengan pengamatan langsung di lapangan. Dengan melakukan analisis vegetasi digukan metode kuadrat dengan petak sampel berukuran 1 m × 1 m penelitian ini di peroleh terdapat 33 jenis gulma 19 famili, dengan rincian gulma daun lebar 23 jenis rerumputan 6 jenis 4 jenis tekian pada habitat pertanaman cengkeh di Negeri Hatu Kecamatan Leihitu Barat Kabupaten Maluku Tengah. Kata kunci: gulma, tanaman cengkeh, ketinggian yang berbeda

Weed Survey Associated in Tobacco (Nicotiana tabacum L.) in Bilatte Tobacco Farm, Ethiopia

2020 ◽  
Vol 1 (1) ◽  
pp. 29-33
Author(s):  
Daniel Abebe ◽  
Mekonnen Tadesse
Keyword(s):  
Relative Abundance ◽  
Cynodon Dactylon ◽  
Datura Stramonium ◽  
Survey Method ◽  
Cyperus Esculentus ◽  
Weed Species ◽  
Importance Value Index ◽  
Importance Value ◽  
Nicotiana Tabacum L ◽  
Weed Survey

An in-field weed survey method was conducted to estimate the most frequently, density and abundance weed species present in Bilatte tobacco farm, Ethiopia during 2014 totally covered approximately 145 hectares. During study period a total number of 14 weed species belonging to 06 monocot and 08 dicot families were recorded out of 7 families of weed reported form study site. The most predominate was shown by monocot Poaceae having 4 weed species followed by dicot family Composite having 3 weeds. The families Cyperaceous, Solanaceae and Amaranthaceous each having 2 weeds, and the family Papaverceae represented by 1 weed. Based on % of frequency Cyperus esculentus (sedges) family Cyperaceous was 99.30. The data showed that Cynodon dactylon and Digitaria abyssinica belong to family Poaceae and Cyperus esculentus family Cyperaceous were the most abundant weed with a density of 35.9, 14 and 12 of plant m-2 respectively. Relative abundance values quantify the overall weed problem posed by specie Cyperus esculentus that had higher relative abundance was 98.97. The importance value index indicated that Cyperaceous and Poaceae families can be considered the great potential to cause reduce tobacco production. Whereas, Solanium nigrum and Datura stramonium were observed with least population density 0.00 and 1.03 plant m-2, least frequently 2.7 and 13.51 %, least relative weed abundance, 0.07 and 1.03 with importance value index 2.8 and 14.8 occurring weed respectively.

scholarly journals ANALISIS VEGETASI GULMA PADA BEBERAPA KELAS UMUR ACACIA MANGIUM WILLD. DI HUTAN TANAMAN INDUSTRI (HTI)

2020 ◽  
Vol 8 (2) ◽  
pp. 185
Author(s):  
Widya Purnama Sari ◽  
Ardi Ardi ◽  
Siska Efendi
Keyword(s):  
Weed Control ◽  
Acacia Mangium ◽  
Survey Method ◽  
Weed Species ◽  
Age Classes ◽  
Main Road ◽  
Purposive Sampling ◽  
The Family ◽  
West Sumatra ◽  
Industrial Plantation

This study was conducted to determine the composition of weed vegetation in Acacia mangium plants and to see differences in the composition of weed vegetation in several age classes of Acacia mangium plants in industrial plantations (HTI). This research was conducted in June to August 2018 in the industrial plantation of PT. Bukit Raya Mudisa (BRM) main road Km 13.7, Jorong Lubuk Mansagu, Kenagarian Koto Nan IV Di Bawah, Sub-district IX Koto, Regency Dharmasraya, Province of West Sumatra. The method used in this research is survey method by laying out the plot by purposive sampling in A. mangium gardens that are 2, 3 and 4 years old. At each age of the plant 2 observation plots were made measuring 40m × 40m in the plot. There were observational sub-plots measuring 1m ×1m in 10 plots of observation on a diagonal line with a total of 60 plots of observation. Based on the results of the analysis, there were 15 species belonging to 10 families. The number of weed species found in class 2, 3 and 4 respectively were 11, 9 and 11 species. The family of weeds that have the most species is the family Poaceae. Weeds are dominant under A. mangim plantations age 2, namely A. gangetica (38.26%), P. crinitum (14.81%) and I. cylindica (14.37%), almost the same as weeds under A.mangium plantations age 3 years namely A. gangetica (31.54%), A. compressus (20.49%), A.sessilis (19.50%), and P. crinitum (14.41%). The dominant age of 4 years weeds are A.gangetica (43.11%), A. sessilis (15.50%), and P. crinitum (15.36%). Weeds that dominate the A.mangium plantations are included in the group of broad-leaved weeds, so weed control is recommended in A. mangium plantations against broadleaf weeds.

scholarly journals Productivity of Pangi (Pangium edule Reinw.) and biodiversity of agroforestry systems at various altitudes in Toraja Regency, South Sulawesi

2021 ◽  
Vol 886 (1) ◽  
pp. 012062
Author(s):  
Syamsuddin Millang
Keyword(s):  
Sea Level ◽  
Plant Species ◽  
Plant Density ◽  
Fruit Production ◽  
Agroforestry System ◽  
Agroforestry Systems ◽  
Survey Method ◽  
Average Height ◽  
Sample Plot ◽  
Different Altitudes

Abstract There are two important things that farmers consider in selecting and developing plant species in their agroforestry system, namely productivity and suitability to the site. This study aims to determine the productivity of the pangi crop and the biodiversity of the agroforestry system at different altitudes. This research was conducted from June to November 2018 at three different altitudes, namely in Lembang Palesan (Rembon District) which represents an altitude of <600 m above sea level, Lembang Turunan (Sangalla District) which represents an altitude of 800-850 m above sea level, and Lembang Gasing (Mengkendek District) which represents an altitude of > 1000 m above sea level. The research method used is a survey method with the placement of sample plots by Purposive Sampling. The sample plot size is 20m x 50m or 0.1 ha. At each different altitude, 10 sample plots were made, so the number of sample plots was 30. The parameters measured were pangi fruit production, tree diameter and height and recorded all plant species in the sample plot. Data analysis was carried out quantitatively and descriptively, while agroforestry system plant species diversity was identified using vegetation analysis methods. The results showed that the fruit production of the pangi plant, density, LBDS and diameter of the pangi tree were significantly different at each different altitude and the largest was at an altitude of 800-850 m above sea level, but the number of plant species and the diversity of plant species at each altitude were relatively the same in the medium category, as well as the density of all types of plants, and the average height of pangi trees were not significantly different at each different altitude. Thus, it is not recommended that pangi crop be developed at an altitude above 850 m above sea level.

scholarly journals Weeds distribution and abundance in irrigated fields of White Nile State

2015 ◽  
Vol 4 (4) ◽  
pp. 45-61
Author(s):  
Mohamed Elkhawad ◽  
Amna Abdalla ◽  
Abosofian Osman
Keyword(s):  
Weed Management ◽  
Field Survey ◽  
Management Strategies ◽  
Mean Field ◽  
Survey Method ◽  
Weed Species ◽  
Field Frequency ◽  
Weed Communities ◽  
White Nile ◽  
Weed Survey

Field survey was conducted during the summer season of 2011- 2012 to determine the weed flora and weed dominance at the irrigated sites of White Nile State. The State was divided into six irrigated sites from which a total of thirty- five fields were selected and ten quadrates (1m2) from each field were taken randomly. In each quadrate individual weed species were recorded. Field frequency, uniformity and mean field density were also determined for each weed. Fifty five weed species belonging to twenty- four families (three monocotyledonous and twenty- one dicotyledonous) were recorded. Brachiaria eruciformis, Brachiaria reptans, Thunbergia annua and Ipomoea cordofana were the most dominant weed species in most fields. The highest Abundance Index were recorded by Ipomoea cordofana at El Salam and El Dawium counties (208.16 and 116.35), Brachiaria eruciformis at Um Remta and El Gebalen counties (158.80 and 79.23), Brachiaria reptans at Kosti (116.54) and Momordica balsamina at Gezira Aba county (90.06). Brachiaria eruciformis showed the highest MFD and Uniformity at El Salam and Um Remta Counties (19.11 and 80.00), respectively, and highest frequency value was recorded by Ipomoea cordofana (142.86) at El Salam County. The AI which used as weed survey method is to evaluate the weed management strategies and the change of weed species in weed communities through years.International Journal of Environment Vol.4(4) 2015: 45-61

scholarly journals Dampak Pengalihan Lahan Mangrove Terhadap Keanekaragaman Benthos di Kecamatan Jaya Baru Kota Banda Aceh

2017 ◽  
Vol 4 (1) ◽  
pp. 41 ◽  
Author(s):  
Fitria Ulfa ◽  
Muhammad Ali Sarong ◽  
Abdullah Abdullah
Keyword(s):  
Direct Observation ◽  
Sampling Method ◽  
Diversity Index ◽  
Mangrove Ecosystem ◽  
Survey Method ◽  
Purposive Sampling ◽  
Land Transfer ◽  
Awareness Raising ◽  
The Impact ◽  
Banda Aceh

This study aims to determine the impact of the land transfer to the diversity of mangrove benthos in the district of Banda Aceh Jaya Baru. This research was conducted in September-November 2014 in an area of mangrove Jaya Baru sub-district of Banda Aceh. The method used survey method or direct observation. Stations were divided into four stations using purposive sampling method on the basis of the existence of mangrove. Benthos diversity analyzed by formula diversity index, while the impact of the transfer was analyzed with the description. The results obtained by analysis of benthos diversity on land that has been reclaimed 1.18 and on land that is not reclaimed 1,17. The conclusion is the diversity of benthos was proving that the land transfer mangrove in the district of Banda Aceh Jaya Baru impact on the benthos diversity that needs to be disseminated and awareness-raising so that the mangrove ecosystem is maintained.

scholarly journals Identification of Pathogenic Bacteria in Cyprinus carpio Reared in Floating Cages

2021 ◽  
Vol 26 (1) ◽  
pp. 26
Author(s):  
Erikson Sahala Pardamean ◽  
Henni Syawal ◽  
Morina Riauwaty
Keyword(s):  
Water Quality ◽  
Cyprinus Carpio ◽  
Pathogenic Bacteria ◽  
Survey Method ◽  
Fish Parasite ◽  
Pseudomonas Sp ◽  
Fish Sample ◽  
Purposive Sampling ◽  
Fish Samples ◽  
Cultured Fish

Pathogenic bacteria is disease causing microorganisms that can attack fish and can cause mass death in cultured fish. The purpose of this study was to identify the types of pathogenic bacteria Cyprinus carpio that were reared in floating cages. This study used a survey method that is purposive sampling and the fish sample were obtained from, PLTA Koto Panjang. the fishes were identified in the Fish Parasite and Disease Laboratory, Fish and Marine Faculty, University of Riau. Fish samples used were 15-20 cm goldfish totaling 12 tails with 3 times taken from 4 different cages. The kidneys organ were examined and to find out the type the bacteria. Result shown identified of pathogenic bacteria consist of 3 types of bacteria namely Aeromonas sp., Pseudomonas sp., and Edwardsiella sp. Water quality during the study was Temperature: 27-300C, pH 6-7, DO 3.67-4.28 ppm, and ammonia 0.048-0.64 mg/L.

scholarly journals ANALISIS PENGARUH KOMPETENSI KERJA DAN BEBAN KERJA TERHADAP PRODUKTIVITAS KERJA SURVEYOR PADA KEGIATAN CONTAINER SURVEY DI DEPO BIMARUNA JAYA

LOGISTIK ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 17-28
Author(s):  
Winoto Hadi ◽  
Kencana Verawati ◽  
Rani Ismorilda
Keyword(s):  
Direct Observation ◽  
Research Method ◽  
Work Productivity ◽  
Sampling Technique ◽  
Maintenance And Repair ◽  
Purposive Sampling ◽  
Descriptive Qualitative

Bimaruna Jaya Depot is one of the companies engaged in services related to the handling and stacking of containers. This company is currently experiencing problems regarding employee work productivity which is decreasing from month to month from the achievement target. The purpose of this study was to determine whether work competence and workload affect the work productivity of surveyors in container survey activities at Bimaruna Jaya Depot. The research method used is direct observation to the field, distributing questionnaires to insurveyors and out, estimators, andsupervisors maintenance and repair and interviews with depot managers andsupervisors maintenance and repair. The type of research used is descriptive qualitative by distributing questionnaires and interviews, namely purposive sampling technique. The results of the study indicate that the work productivity of aofficer surveyor can be influenced by competence and workload with targets set by the company.

scholarly journals POTENSI VEGETASI MANGROVE SEBAGAI PAKAN LEBAH MADU DI KAWASAN HUTAN MANGROVE SURYA PERDANA MANDIRI KELURAHAN SETAPUK BESAR SINGKAWANG UTARA

2020 ◽  
Vol 8 (2) ◽  
Author(s):  
Sapto Prayoga ◽  
Burhanuddin Burhanuddin ◽  
Evy Wardenaar
Keyword(s):  
Honey Bee ◽  
Mangrove Forest ◽  
Research Method ◽  
Forest Area ◽  
Tree Level ◽  
Survey Method ◽  
Purposive Sampling ◽  
Mangrove Plants

Mangrove Forest has a role for the life of fauna as a source of feed and shelter for honeybees. Honeybees need feed to maintain their survival in nature, so that the availability of the feed generated by flowers in the form of nectar and pollen gives the ability of bees to breed with maximum. This research aims to obtain the type of mangrove plants and pollen, and its potential in Surya Perdana Mandiri Mangrove Forest area. The research method used is a survey method with the example tile determination Purposive Sampling. There are 10 sample compartments of 20 x 20 meters in 2 research lines. Based on the results of the research is known that there are 22 types of mangrove plants, based on observations, 13 of which are the source of honey bee feed, and based on the study of literatures there are 18 The potential feed bees at the highest tree level on the Api-api putih (Avicemia Marina) with an INP value of 82.17% and the smallest value Ceriop decandra 17.50% while at the highest INP stake level of Rhizopora stylosa 76.08% with flowering 83.44% while the smallest INP Ceriop decandra 22.63% with flowering 36.36%. In the area of Mangrove Forest Setapuk Large types of honey bee feed plant available throughout the year, although in quantity varies from month to monthKeywords: bee feed, mangrove, potential, Setapuk Besar

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