scholarly journals PENGARUH HERBISIDA BERBAHAN AKTIF PARAQUAT TERHADAP PERSENTASE KEMATIAN GULMA DAN JUMLAH MIKROORGANISME TANAH

2020 ◽  
Vol 4 (2) ◽  
pp. 99-108
Author(s):  
Sakiah Sakiah ◽  
Guntoro Guntoro ◽  
Adri Moses Manullang

Paraquat is an active herbicide used to control weeds chemically. This research aim is to determine the effect of herbicide applications with active paraquat matters on the percentage of weed mortality and the number of soil microorganisms. This research used a non-factorial randomized block design with five levels of treatment, that is P0: control; P1: 5 ml of paraquat in 1 litre of water, frequency of application is once a week; P2: 10 ml of paraquat in 1 litre of water, frequency of application is once a week; P3: 10 ml of paraquat in 1 litre of water, frequency of application is once in two weeks; and P4: 5 ml of paraquat in 1 litre of water, frequency of application is once in two weeks. The results of the observations were compiled in a Variety Checklist and continued with the Duncan Multiple Range Test. The results showed that the dominant weeds in the research plot were Ageratum conyzoides, Mimosa pudica, and Paspalum commersonii.The application of 5 ml/l paraquat herbicide, the frequency of application once a week was effective in reducing weed mortality. However, the use of paraquat did not significantly affect the number of soil microorganisms

2021 ◽  
Vol 4 (2) ◽  
pp. 122-129
Author(s):  
Enda Sabda Gentri Sembiring ◽  
Julaili Irni ◽  
Rama Riana Sitinjak ◽  
Bayu Pratomo

Introduction: This study aims to determine the growth response of Mucuna bracteata cuttings to the concentration and duration of soaking shallot extract. Materials and Methods: This study used a factorial Randomized Block Design (RBD) with two factors, namely: shallot extract concentration (P) consists of 4 levels, include P0= untreated, P1= 10 ml, P2= 20 ml, P3= 30 ml, meanwhile the soaking time (Q) consists of 4 levels, such as Q0= momentarily dipping, Q1= 15 minutes, Q2= 30 minutes, Q3= 45 minutes. The data was processed by ANOVA and if significant, then further tested with Duncan Multiple Range Test (DMRT) at the rate of 5%. Results: The concentration of shallot extract, soaking time and their interaction had a very significant effect on the survival percentage of Mucuna bracteata D.C. cuttings. The highest survival percentage of cuttings of Mucuna bracteata on the effect of shallot extract concentration and soaking time was obtained in the P0Q0, P0Q1, and P3Q2 treatments after the lid was opened at 4 weeks after planting. In the number of leaves also had significant effect in the interaction of two factors


2021 ◽  
Vol 46 (3) ◽  
pp. 278
Author(s):  
Arnandha Desya Refaldi ◽  
Prasodjo Soedomo ◽  
Muharam Muharam ◽  
Yayu Sri Rahayu

Long bean production in Indonesia continues to decline every year, this is due to land conversion and the lack of application of agricultural technology. One of the efforts to increase long bean production is by multiplying quality seeds using organic materials as nutrients needed by plants. This study aims to determine the response of the growth and production of long bean seeds to the interaction of strains, varieties with a concentration of liquid organic fertilizer. The research was conducted at the Vegetable Crops Research Institute, Lembang, West Bandung Regency from July 2020 to January 2021. The research method used was an experimental method with a Randomized Block Design (RBD) with a split-plot design consisting of 2 factors: the first factor (main plot) (A) was the variety and strain with 2 levels, a1 (Tavi canton variety) and a2 (pras-1 strain).The second factor (subplot) (B) is concentration of biopras-1 with 5 levels, b1 (0 cc/l-1 water), b2 (1 cc/l-1 water), b3 (2 cc/l-1 water), b4 (3 cc/l-1 water) and b5 (4 cc/l-1 water). The effect of the treatment was analyzed by means of variance and if the f test at 5% level was significantly different, then to find out the best treatment was continued with the DMRT (Duncan Multiple Range Test) at the 5% level. The results showed that there was an interaction between varieties, lines with various concentrations of biopras-1 liquid organic fertilizer on dry seed weight per plant, dry seed weight per plot, and 1000 seeds weight. Treatment of pras-1 lines with the concentration of liquid organic fertilizer biopras-1 4 cc / l of water was able to give the best results on dry seed weight per plant (35.31 gr), dry seed weight per plot (1.298.20 gr or 2.16 Ton/ha-1) and the weight of 1000 seeds (153.10 gr).


2020 ◽  
Vol 9 (2) ◽  
pp. 108
Author(s):  
Wulandari Setiadarma ◽  
Dewa Gede Mayun Permana ◽  
Komang Ayu Nocianitri

This study aims to determine the effect of incubation time on milk clotting enzyme (MCE) activity produced by L. rhamnosus SKG 34 and determine the optimum incubation time to produce the highest its activity. This study used a randomized block design (RBD) with incubation time as a treatment consisting of 8 levels, that were 6 hours, 12 hours, 18 hours, 24 hours, 30 hours, 36 hours, 42 hours, and 48 hours. Data were analyzed with Variance Analysis (ANOVA) than followed by Duncan Multiple Range Test (DMRT). The analyzed were repeated 3 times resulting in 24 experimental units. The results showed that the incubation time significantly affected protease activity, MCE activity, specific protease activity and ratio of MCE to protease but did not affect the total LAB. The optimum incubation time of L. rhamnosus SKG 34 is 12 hours with total LAB 1.83 x 109 CFU/ml and protease activity 180.67 U/ml, MCE activity 595.06 SU, protease spesific activity 73.149 U/mg and ratio of MCE to protease 3.29 SU/U. Keywords : incubation time, Enzyme protease, Lactobacillus rhamnosus SKG 34, Milk clotting enzyme.


2020 ◽  
Vol 26 (1) ◽  
pp. 23
Author(s):  
Nur Eko Prasetyo ◽  
Budi Setyawan ◽  
Samijan Samijan ◽  
Nofitri Dewi Rinojati ◽  
Sumarmadji Sumarmadji

<p>The physical and chemical properties of the growing medium for <em>root trainer</em> of rubber are critical to support plant growth. This study aimed to obtain the best medium for growing rootstock rubber seedlings in the <em>root trainer</em>.  Rubber clone PR 300 seeds were germinated for 21 days, then raised in <em>root trainer</em> pots for five months. The treatments evaluated were a mixture of <em>cocopeat</em>, Rawapening peat, and manure at different ratios.  The experiment was designed in a Randomized Block Design, three replications, 30 plants per replicate, totaling 720 plants. The observed variables were N, P, K, Mg, C-organic content, pH, and cation exchange capacity of <em>cocopeat</em>, peat, and manure, as well as plant growth (height, stem diameter, wet weight, and dry weight). ANOVA used for analyzing data, followed with the <em>Duncan Multiple Range Test</em> at 5% level. The results showed that there were three best <em>root trainer</em> media for PR 300 rubber rootstock seedlings were a mixture of <em>cocopeat</em> + peat (1:1), <em>cocopeat</em> + peat + manure (1:2:1), and <em>cocopeat</em> + peat + manure (2:1:1). The growth and compactness of the roots are outstanding, so the seedlings are easily removed from the <em>root </em><em>trainer</em> pots without significant damage. Based on the initiation and cost, the best <em>root trainer</em> medium is a mixture of <em>cocopeat</em> + peat + manure (1: 2:1). It is necessary to study the use of other types of peat soils apart from Rawapening. Also, it needs to be observed further plant growth after inoculation with the stem and after planting in the field.</p><p><strong>Keywords </strong>: Planting medium, Rawapening peat, rubber clone PR 300.<em></em></p><p><em><br /></em></p><p><strong>Abstrak<br /></strong></p><p>Sifat fisik dan kimia media tanam di dalam wadah <em>root trainer</em> bibit karet sangat penting untuk mendukung pertumbuhan tanaman. Penelitian ini bertujuan mendapatkan media terbaik untuk pertumbuhan bibit batang bawah karet di dalam <em>root trainer</em>.  Benih klon karet PR 300 dikecambahkan selama 21 hari pada bedeng pengecambahan kemudian dipindah-tanam dan dibesarkan selama 5 bulan dalam pot <em>root trainer</em>. Perlakuannya yaitu campuran <em>cocopeat</em>, gambut Rawapening, dan pupuk kandang (pukan) pada berbagai ratio, dan kontrol. Penelitian dirancang secara Acak Kelompok, tiga ulangan, masing-masing 30 tanaman, sehingga totalnya 720 tanaman. Variabel yang diamati yaitu kandungan N, P, K, Mg, C-organik, pH, dan kapasitas tukar kation dari <em>cocopeat</em>, gambut, dan pupuk kandang, serta pertumbuhan tanaman (tinggi, diameter batang, bobot segar, dan bobot kering). Data dianalisis dengan ANOVA, kemudian <em>Duncan Multiple Range Test</em> pada taraf 5%. Hasil penelitian menunjukkan bahwa ada tiga macam media <em>root trainer</em> terbaik untuk bibit batang bawah karet klon PR 300 yaitu campuran <em>cocopeat </em>+ gambut (1:1), <em>cocopeat </em>+ gambut + pukan (1:2:1), dan <em>cocopeat </em>+ gambut + pukan (2:1:1). Pertumbuhan dan kekompakan akar sangat baik sehingga bibit mudah dilepas dari <em>root tainer</em> tanpa kerusakan berarti. Berdasarkan kepraktisan dan biaya maka media <em>root trainer</em> terbaik adalah campuran media <em>cocopeat </em>+ gambut + pukan (1:2:1). Perlu dilakukan kajian mengenai pemanfaatan tanah gambut jenis lainnya selain dari Rawapening. Selain itu, juga perlu diamati lebih lanjut pertumbuhan tanaman setelah diokulasi dengan batang atas maupun setelah ditanam di lapangan.</p><p><strong>Kata kunci </strong>: Gambut Rawapening, klon karet PR 300, media tanam.</p>


Jurnal Agro ◽  
10.15575/438 ◽  
2015 ◽  
Vol 2 (2) ◽  
pp. 50-57 ◽  
Author(s):  
Muhamad Fajar Ramadhan ◽  
Cecep Hidayat ◽  
Sofiya Hasani

Penelitian yang bertujuan untuk mengetahui pengaruh bahan organik (kompos gamal, dan asam humat) serta FMA (Glomus sp. + Gigaspora sp.+ Aclauspora sp) terhadap pertumbuhan serta hasil tanaman cabai pada tanah pasca galian C telah dilaksanakan di Gapoktan Simpay Tampomas, Sumedang sejak bulan Februari sampai dengan Juli 2014. Metode yang digunakan merupakan metode eksperimental berupa Rancangan Acak Kelompok (RAK),  dengan 8 perlakuan dan 4 kali ulang: a0 = kontrol, a1 = kompos gamal 5 t ha-1, a2 = kompos gamal 10 t ha-1, a3 = aplikasi FMA, a4 = asam humat, a5 = kompos gamal 5 t ha-1 + FMA , a6 =  kompos gamal 10 t ha-1 + FMA, dan a7 = aplikasi asam humat + FMA. Pengujian lanjut dilakukan dengan Duncan Multiple Range Test (DMRT). Hasil penelitian menunjukkan bahwa aplikasi kompos gamal, asam humat, dan FMA tidak berpengaruh nyata terhadap diameter batang dan bobot segar buah, tetapi berbeda nyata terhadap tinggi tanaman. Pengaplikasian bahan organik hingga 10 t ha-1, asam humat, dan FMA belum berpengaruh nyata terhadap perbaikan kesuburan tanah pasca galian C (tambang pasir), karena kondisi tanah pasca galian C yang didominasi 75% pasir dan 50% batuan. The study which aimed to determine the effect of organic matter (gliricidia compost, and humic acid) also AMF (Glomus sp. + Gigaspora sp. + Aclauspora sp.) on growth and yield of chili plants on post-excavation soil C had been held in Gapoktan Simpay Tampomas, Sumedang from February to July 2014. The method was an experimental method a randomized block design (RBD), with 8 treatments and repeated 4 times: a0 = control, a1 = gliricidia compost 5 t ha-1, a2 = gliricidia compost 10 t ha-1, a3 = AMF, a4 = humic acid, a5 = gliricidia compost 5 tons ha-1 + AMF, a6 = gliricidia compost 10 tons ha-1 + AMF, and a7 = humic acid + AMF. Further testing was done by Duncan Multiple Range Test (DMRT). The results showed that the application of gliricidia compost, humic acid, and AMF did not significantly affect stem diameter, and fresh weight of fruit, but significant on stem height. Application of organic matter up to 10 tons ha-1, humic acid, and AMF had not significantly affect fertility improvement of post-excavation soil C (sand mining), because the soil C dominated by 75% sand and 50% rock.


Author(s):  
N. Hidayah ◽  
Nurhaita Nurhaita ◽  
R. Zurina

This research was designed to study about effects of supplementation jengkol (Archidendron jiringa) peel powder on VFA molar proportion, production of methane, and hydrogen balance in vitro. The experiment used randomized block design with 4 treatments (0%, 2%, 4%, 6%) and 4 replications. The research observed of VFA molar proportion, production of methane, and hydrogen balance. Data were analyzed using Analysis of Variance (ANOVA), and the Duncan Multiple Range Test examined the differences among treatment means. The results showed that the supplementation of jengkol (A. jiringa) peel powder until 6% did not affect (P>0.05) VFA molar proportion but the treatment without supplementation of jengkol (A. jiringa) peel powder had the highest (P<0.05) methane and H2 production. It was concluded that the supplementation of jengkol (A. jiringa) peel powder until 6% decreased methane and hydrogen production but did not affect on VFA molar proportion.


2021 ◽  
Vol 5 (2) ◽  
pp. 112
Author(s):  
Najmah Istikaanah ◽  
Munasib Munasib ◽  
Friska Citra Agustia

The aim of the research was to make high protein instant tiwul from mocaf which was substituted with jack bean flour and given a food grade commercial thickener to improve its sensory aspect. The study used a randomized block design. The factors studied were germination treatment on jack bean (G), without pre germination (G1) and with pre germination (G2); Proportion of mocaf: jack bean flour : tapioca (w/w) (F), P1 = 75:15:10, P2 = 70:20:10 and P3 = 65:25:10 and Addition of Commercial food grade thickening agent (w/w; % to flour weight) (K), K1 = 0.5%, K2 = 0.75% and K3 = 1.0%. The variables studied were physicochemical properties (moisture content, ash content, formol value, rehydration ability, for the best treatment, protein and fat content were tested) and sensory properties. Data were analyzed by F test (ANOVA) and continued with DMRT (Duncan Multiple Range Test). Based on the effectiveness index test, the best instant tiwul was G2P3K3 (with pre germination; proportion of mocaf-jack bean flour-tapioca w/w 65:25:10; commercial food grade thickening agent 1%). This instant tiwul has a water content of 4.39% wb; protein 7.05%db (6.74%wb), fat 6.39% db (6.11%wb), ash 0.98%db (0.93%wb) and carbohydrates (by difference) 85.54% db (81.78% wb), coefficient rehydration 3,67 and formol value 0,0383 ml NaOH 0,1N/g bk.


2021 ◽  
Vol 46 (2) ◽  
pp. 219
Author(s):  
Khusna Amalia Damayanti ◽  
Prasodjo Soedomo

 This research aims to determine the type of shallot variety and the correct dosage for maximum growth and yield of shallot plants. The research method used an experimental method with the experimental design used was a single factor randomized block design (RBD) consisting of 6 treatments, namely A (Sembrani Variety and 100). ml/polybag), B (Sembrani variety and 120 ml/polybag), C (Sembrani variety and 140 ml/polybag), D (Mente's variety and 100 ml/polybag), E (Mente's variety and 120 ml/polybag), and F (Mente's variety and 140 ml/polybag) was repeated 4 times so that there were a total of 24 experimental units. The effect of the treatment was analyzed using variance and if the F test at the 5% level was significant, then to find out the best treatment was continued with the DMRT (Duncan Multiple Range Test) further test at the 5% level. The results showed that there was a significant effect on the types of shallot varieties with different dosages of NPK compound, on all research parameters. Treatment E gave the highest yield at plant height (44.49 cm), the weight of fresh tubers with leaves/clump (7.11 g), the weight of fresh tubers with leaves/plot (19.93 g), the weight of dry tubers with leaves/clump (5.90 g), weight dry tubers with leaves/plot (16.35 g). While treatment D gave the highest yield on the number of tillers (3.14), the number of leaves (6.97), the number of tubers (3.14). Treatment C gave the highest yield on tuber diameter (22.58 mm) and treatment A tuber length (31.48 mm).   


2019 ◽  
Vol 8 (4) ◽  
pp. 378
Author(s):  
Dina Puti Kartika ◽  
I Dewa Gde Mayun Permana ◽  
Komang Ayu Nocianitri

This study aims to determine the effect of soursop juice on the characteristics of edamame yogurt and to determine the optimal concentration of soursop juice to produce edamame yogurt with the best characteristics. This study used a Randomized Block Design (RBD) with the treatment of soursop fruit juice concentration consisting of 5 levels, namely 0%, 5%, 10%, 15% and 20%. Each treatment was repeated 3 times, resulted in 15 experimental units. The data were analyzed by the Analysis of Variance (ANOVA) and if the treatment significantly affected the variables, the Duncan Multiple Range Test (DMRT) was performed. The results showed that the concentration of soursop juice significantly affected total LAB, total acid, pH, antioxidant activity, viscosity, sensory hedonic test on texture and sensory scoring test on texture and taste. The edamame yogurt with 15% soursop juice had the best characteristics with the following characteristics: total LAB 1.01 x 1011 CFU/ml, total acid 0.86%, viscosity 310 cP, antioxidant activity 35.47%, pH 3.72 and the sensory properties of neutral scents, neutral appearance, a rather thick texture, a rather like taste, a slightly sour taste and a rather like overall reception. Keywords: edamame yogurt, soursop juice, antioxidant activity


2015 ◽  
Vol 3 (1) ◽  
pp. 10
Author(s):  
Yudi Sastro ◽  
, I krarwati ◽  
, Suwandi

<p>ABSTRACT</p><p>This  study  aimed  at  determining  the  effect  of  granulation  and  compost  enrichment  to  improve  the effectivity of compost on green mustard, lettuce, kangkong, and spinach. The granulation treatments i.e without and  with  granulation  and  the  enrichment  using  microbial  cultures,  the  liquids  from  the  rock  phosphate fermentation, and the mixture of microbial cultures and the liquids from the rock phosphate fermentation were as treatments . The combinations  of treatments  were  arranged using completely  randomized  block  design with 20 replications. Variables observed were plant height, leaf number, fresh weight and dry weight. The data were analyzed using analysis of variance  and foll owed by Duncan's Multiple Range Test.  The results showed that there was no significant interaction between granulation with enrichment to improve the effectivity of compost on green mustard, lettuce, kangkong, spinach. The compost granulation treatment significantly increased the effectivity of compost on green mustard and lettuce, but not  on  kangkong and spinach. The granulation even decreased  the compost effectiveness on spinach. The compost enrichments treatments significantly increased the effectivity of compost on green mustard, lettuce and spinach. The compost enrichments using the mixture of liquid fermentation medium of rock phosphate and microbial increased yield of green mustard and lettuce up to 48.4 and 60.1% respectively, while liquid fermentation medium of rock phosphate increased yield of spinach 75.0%.</p><p>Key words: compost, granulation, enrichment, vegetable</p><p>ABSTRAK</p><p>Penelitian  ini  bertujuan  untuk  mengetahui  pengaruh  granulasi  dan  pengayaan  terhadap efektivitas kompos pada sawi, selada, kangkung, dan bayam. Perlakuan penelitian terdiri atas perlakuan granulasi,  yakni  tanpa  dan  dengan  granulasi,  dan  perlakuan  pengayaan  yang  meliputi  kultur  mikroba, cairan media fermentasi batuan fosfat, dan campuran kultur mikroba dan cairan media fermentasi batuan fosfat.   Kombinasi  perlakuan  diatur  menggunakan  Rancangan  Acak  Kelompok  Lengkap  dengan pengulangan  sebanyak  20  kali.  Peubah  pengamatan  meliputi   tinggi  tanaman,  jumlah  daun,  dan  berat segar  serta  berat  kering  tanaman.   Data  hasil  pengamatan  dianalisis  menggunakan  analisis  varian  dan dilanjutkan  menggunakan   Duncan  Multiple  Range  Test.  Hasil  penelitian  menunjukkan  bahwa  tidak terdapat  interaksi  nyata  antara  perlakuan  granulasi  dan  pengayaan  terhadap  peningkatan  efektivitas kompos  pada  sawi,  selada,  kangkung  dan  bayam.  Perlakuan  granulasi  nyata  meningkatkan  efektivitas kompos  pada  sawi  dan  selada,  namun  tidak  pada  kangkung  dan  bayam.   Perlakuan  granulasi  bahkan menurunkan efektivitas kompos pada bayam.  Pengayaan  nyata  meningkatkan efektivitas kompos pada sawi, selada, dan bayam. Pengayaan  kompos menggunakan campuran kultur mikroba dan cairan medium fermentasi  batuan  fosfat  meningkatkan  hasil  sawi  dan  selada,  masing-masing  hingga  48,4  dan  60,1%, sedangkan cairan medium fermentasi batuan fosfat meningkatkan hasil bayam sebesar 75%.</p><p>Kata kunci: kompos, granulasi, pengayaan, sayuran</p>


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