scholarly journals Resistensi Beberapa Varietas Bawang Merah Terhadap Colletotrichum Gloeosporioides

2018 ◽  
Vol 20 (2) ◽  
pp. 40
Author(s):  
Hekmawati Hekmawati ◽  
Susilo Hambeg Poromarto ◽  
Salim Widodo
Keyword(s):  
Incubation Period ◽  
Disease Severity ◽  
Colletotrichum Gloeosporioides ◽  
Disease Incidence ◽  
Dry Weight ◽  
Environmental Damage ◽  
Resistance Level ◽  
Randomized Design ◽  
Resistant Varieties ◽  
Completely Randomized Design

<p>Shallot is an important vegetable because it is needed for seasoning and beneficial for health. One of the problems in shallot cultivation is the decrease in productivity due to <em>Colletotrichum gloeosporioides</em> attack that caused anthracnose disease. The use of resistant varieties is a solution to control <em>C. gloeosporioides</em> which is safe and doesn't cause environmental damage. Shallot consists of many varieties, but their resistance level remains unknown. The research aimed to test the resistance of some varieties of shallots to <em>C. gloeosporioides</em>. Shallots varieties tested are Tajuk, Bauji, Bima Curut, Bima Rajat, Bali Lancur and Bali Karet. The research used a one-factor completely randomized design with 12 treatments and 5 replications. The results of the research showed that Tajuk, Bima Curut, Bali Lancur and Bali Karet varieties were highly susceptible due to disease severity of more than 71%, have a faster incubation period of anthracnose, high disease incidence and a significant decrease in tuber. Bauji and Bima Rajat varieties are classified as susceptible varieties due to disease severity of 64% but have a longer incubation period of anthracnose, higher number of tubers, higher fresh and dry weight of tubers and lower reduction in the number and weight of tubers.</p>

scholarly journals Use of Bamboo Vinegar as an Alternative to Control Downy Mildew in Maize

2020 ◽  
Vol 3 (2) ◽  
pp. 17-24
Author(s):  
Muhammad Habibullah ◽  
Danes Suhendra
Keyword(s):  
Downy Mildew ◽  
Disease Severity ◽  
Disease Incidence ◽  
Leaf Tissue ◽  
Dry Weight ◽  
Positive Control ◽  
Negative Control ◽  
Randomized Design ◽  
Resistant Strains ◽  
Control Application

Introduction: Downy mildew control using pesticides has been used intensively and led to the onset of resistant strains. This research aims to find out the effect of bamboo vinegar administration on disease incidence, disease severity, disease progression, and growth of maize. Materials and Methods: This research was conducted from June to August 2020 in the laboratory and Screenhouse of the Faculty of Agriculture, Universitas Tidar. The experiment was experimentally conducted using a Completely Randomized Design (CRD) consisting of 3 treatments with 6. are plants. In each polybag used there are 3 maize so there are 54 plants tested. The treatment tested is of bamboo vinegar and maydis (negative control), of bamboo vinegar with inoculation P. maydis (positive control), application bamboo vinegar 2 ml l-1 with inoculation P. maydis. Observations on the agronomic influence of maize covering height, , and dry weight were analyzed using ANOVA at a significance of 5% followed by LSD test at the same real level using software R v. 4.0.2. Results: Bamboo vinegar showed lignification in the treatment of stronger bamboo vinegar in corn leaf tissue, did not decrease in disease incidence, but decreased the disease severity by 22.18% and decreased disease the progression by 34.74% based on AUDPC value. The growth of maize, bamboo vinegar-treated shows values are not significant negative control.

scholarly journals Uji Patogenesitas Oospora Peronospora manshurica Asal Kedelai Impor pada Tiga Kultivar Kedelai

2021 ◽  
Vol 6 (1) ◽  
pp. 23
Author(s):  
Ani Ardiana Susanti ◽  
Marlina Marlina ◽  
Husda Marwan ◽  
Mapegau Mapegau
Keyword(s):  
Downy Mildew ◽  
Incubation Period ◽  
Disease Severity ◽  
Class I ◽  
Experimental Unit ◽  
Soybean Seeds ◽  
Soybean Cultivars ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Soybean Plants

Downy mildew in soybean plants is caused by the fungus Peronosporamanshurica. This fungus is an obligate parasite and its existence in Indonesia is still limited. This study aims to determine the pathogenicity of the fungus P. manshurica carried on imported seeds of soybeans from Malaysia. The Oospora from imported soybean seeds from the Class I Agricultural Quarantine Center was tested for its pathogenicity on soybean cultivars Anjasmoro, Grobogan, and Wilis in the greenhouses of the Jambi Class I Agricultural Quarantine Center. This test used a completely randomized design (CRD), using 4 treatments; 3 superior soybean cultivars (Anjasmoro, Grobogan, and Wilis),and 1 imported soybean cultivar. Each treatment was repeated 6 times so that there were 24 experimental units and each experimental unit consisted of 5 plants so that the total number was 120 plants. The results showed that the pathogenicity of the Oospore ofP.manshurica from imported soybean seeds still caused downy disease in the three soybean cultivars tested. There was no difference in the incubation period of downy mildew caused by the Oospora ofP.manshurica on Anjasmoro, Grobogan, and Wilis cultivars, which were 5.5, 8.0, and 7.0 days after inoculation, respectively. The highest disease severity was found in the Anjasmoro cultivar (8.91%) and the lowest was in the Wilis cultivar (2.66%), but it was not different from the disease severity in the Grobagan cultivar (4.28%).

scholarly journals Pengujian Ekstrak Sederhana Bagian Tumbuhan Cassia alata Linnaeus terhadap Colletotrichum Gloeosporioides secara Invitro

2017 ◽  
Vol 1 (2) ◽  
pp. 42
Author(s):  
Arneti Arneti ◽  
Eri Sulyanti
Keyword(s):  
Colletotrichum Gloeosporioides ◽  
Dry Weight ◽  
Colony Growth ◽  
Cassia Alata ◽  
Pests And Diseases ◽  
Conidia Germination ◽  
Randomized Design ◽  
Potential Part ◽  
Completely Randomized Design

Plant extracts have been known to cause inhibit the growth of Colletotrichum gloeosporioides.This study was aimed to determine the most potential part of Cassia alata crude extract to control antrachnose on chili. The study was conducted in Phytopathology Laboratory, Plant Pests and Diseases Department, Agriculture Faculty, Andalas University, from April to June 2015. The research used Completely Randomized Design (CRD) with seven treatments and five replications. The treatments were several extracts from different parts of C. Alata: 1) control 2) flower, 3) old leaf, 4) young leaf, 5) stem, 6) root, and 7) seed with concentration of 5% respectively. Variables observed were colony growth, colony width, conidia number, colony wet and dry weight, and conidia germination. The result showed that all of C. alata extracts could inhibit the growth of C. gloeosporioides in vitro. The best extract was from the old leaf with the percentage of colony width, conidia number, colony wet and dry weight, and conidia germination of 64,30%, 82,41%, 37,77, 29,8%, and 79,96% respectively.

scholarly journals RESPON BEBERAPA VARIETAS KEDELAI (GLYCINE MAX (L.) MERRIL) TERHADAP INFEKSI PEANUT STRIPE POTYVIRUS

2002 ◽  
Vol 2 (2) ◽  
pp. 47-50
Author(s):  
Hasriadi Mat Akin ◽  
Muhammad Nurdin
Keyword(s):  
Glycine Max ◽  
Incubation Period ◽  
Dry Weight ◽  
Growth And Yield ◽  
Soybean Plant ◽  
Soybean Yield ◽  
Randomized Design ◽  
Glycine Max L ◽  
Completely Randomized Design ◽  
Plot Experiment

Response of various soybean varieties [Glycine max (L.) Merril] againts peanut stripe potyvirus infection. This experiment was conducted to investigate the effect of PStV infection on soybean growth of various soybean varieties. Treatments were arranged in completely randomized design in split plot experiment with four replications. Main plots were virus-inoculated and uninoculated plants; subplots were eight soybean varieties (Wilis, Orba, MLG2521, Amerikana, Yellowbean, B3570, Slamet and Taichung). The results showed that infection decreased soybean growth indicated by reduction dry weight of soybean plant and reduction of soybean yield. Slamet variety compared to other varieties showed susceptible reaction indicated by the shortest incubation period (9,75 days), significant reduction of dry weigh of soybean plant, and the highest reduction of soybean yield (23,6%). Thaicung variety showed resistant reaction indicated by longest incubation period (14,3 days) and insignificant reduction of soybean growth and yield.

Effect of planting date and density on calendula and peppermint herbs

2014 ◽  
Vol 1 (1) ◽  
pp. 25-29
Author(s):  
Rahim Mohammadian ◽  
Behnam Tahmasebpour ◽  
Peyvand Samimifar
Keyword(s):  
Mutual Effect ◽  
Dry Weight ◽  
Planting Date ◽  
Mass Reduction ◽  
Flower Number ◽  
Planting Dates ◽  
Randomized Design ◽  
Significant Difference ◽  
Completely Randomized Design ◽  
Total Maximum

A factorial experiment was conducted with a completely randomized design to evaluate the effects of planting date and density on calendula herbs and peppermint. It had 3 replicates and was done in Khosroshahr research farm, Tabriz in 2006. Under studied factors were: 3 planting dates (10 May, 25 May and 10 June) in 4 densities (25, 35, 45, 55) of the plant in square meters. The results of variance a nalysis showed that there was 1% probability significant difference between the effects of planting date and bush density on the leave number, bush height and the bush dry weight. But the mutual effect of the plant date in mentioned traits density was insignificant. Regarding the traits mean comparison, the total maximum dry weight was about the 55 bush density in mm. Also, the bush high density in mm causes the bush growth and its mass reduction. When there is the density grain, the flower number will increase due to bush grain in surface unit. Overall, we can conclude that 10 June planting and 45 bush density in mm is the most suitable items and results in favored production with high essence for these crops.

Effect of rhizobacteria strains on the induction of resistance in barley genotypes against Cochliobolus sativus

2020 ◽  
Vol 13 (2) ◽  
pp. 83-92 ◽  
Author(s):  
A. Adam
Keyword(s):  
Plant Growth ◽  
Pseudomonas Putida ◽  
Growth Parameters ◽  
Disease Incidence ◽  
Dry Weight ◽  
Cochliobolus Sativus ◽  
Resistance Level ◽  
Wet Weight ◽  
Number Of Leaves ◽  
Barley Genotypes

SummaryEnhancement of the resistance level in plants by rhizobacteria has been proven in several pathosystems. This study investigated the ability of four rhizobacteria strains (Pseudomonas putida BTP1 and Bacillus subtilis Bs2500, Bs2504 and Bs2508) to promote the growth in three barley genotypes and protect them against Cochliobolus sativus. Our results demonstrated that all tested rhizobacteria strains had a protective effect on barley genotypes Arabi Abiad, Banteng and WI2291. However, P. putida BTP1 and B. subtilis Bs2508 strains were the most effective as they reduced disease incidence by 53 and 38% (mean effect), respectively. On the other hand, there were significant differences among the rhizobacteria-treated genotypes on plant growth parameters, such as wet weight, dry weight, plant height and number of leaves. Pseudomonas putida BTP1 strain was the most effective as it significantly increased plant growth by 15-32%. In addition, the susceptible genotypes Arabi Abiad and WI2291 were the most responsive to rhizobacteria. This means that these genotypes have a high potential for increase of their resistance against the pathogen and enhancement of plant growth after the application of rhizobacteria. Consequently, barley seed treatment with the tested rhizobacteria could be considered as an effective biocontrol method against C. sativus.

Respon Akar Bibit Aren Genjah (Arenga pinnata) Di Pembibitan Pada Pemberian Dosis dan Interval Pupuk Organik Cair Nasa

2018 ◽  
Vol 7 (1) ◽  
pp. 28
Author(s):  
Yetti Elidar
Keyword(s):  
Organic Fertilizer ◽  
Dry Weight ◽  
Treatment Combination ◽  
Root Dry Weight ◽  
Randomized Design ◽  
Dose Study ◽  
Palm Sugar ◽  
Wet Weight ◽  
Completely Randomized Design ◽  
Leaf Dry Weight

Research on the response of roots of palm sugar palm seeds (Arenga pinnata) in nurseries at doses and intervals of Nasa liquid organic fertilizer. Aims to determine the dosage, interval and combination of dosages and fertilization intervals with Nasa liquid organic fertilizer which can provide the best dry weight of the roots in the nursery. The research design used was a Completely Randomized Design (CRD) with 3x3 factorial experiments and each treatment was repeated 8 (eight) times, consisting of: the first factor was the treatment of POC Nasa dose in a concentration of 3 cc POC Nasa per liter of water (D) consists of 3 levels, namely: d1 = 300 ml POC Nasa, d2 = 400 ml POC Nasa, d3 = 500 ml POC Nasa, while the second factor is the treatment of POC Nasa Interval (I) consisting of 3 levels, namely: i1 = 2 once a week, i2 = once every 3 weeks, i3 = once every 4 weeks. The results of the POC Nasa dose study had a significant effect on leaf wet weight, leaf dry weight, root wet weight and root dry weight. The best dose at this level are: d2 (400 ml of Nasa liquid organic fertilizer), the interval of liquid organic fertilizer Nasa has a significant effect on leaf wet weight, leaf dry weight, root wet weight and root dry weight. The best dose at this level is: i1 (once every 2 weeks). The treatment combination has no significant effect on all parameters. 

scholarly journals Perlakuan Berbagai Dosis Pupuk ZA Pertumbuhan Dan Hasil Tanaman Bayam Merah (Amaranthus gangeticus)

2021 ◽  
Vol 5 (2) ◽  
pp. 180
Author(s):  
Edy Kustiani ◽  
Mariyono Mariyono ◽  
Bela Citra Ayuningtyas
Keyword(s):  
Analysis Of Variance ◽  
Nutritional Value ◽  
Environmental Design ◽  
Dry Weight ◽  
Growth And Yield ◽  
Dose Treatment ◽  
Randomized Design ◽  
Number Of Leaves ◽  
Completely Randomized Design ◽  
The Ideal

Red spinach (Amaranthus gangeticus) is one of the most popular vegetables because of its high nutritional value and easy cultivation. Efforts to increase the production of red spinach are to fertilize to meet the needs of both macro and micronutrients. This study aimed to determine the effect of ZA fertilizer dose on the growth and yield of red spinach. The environmental design used was a non-factorial, completely randomized design with four replications. The factors tested were the dose of ZA fertilizer which consisted of 6 levels, namely: without ZA fertilizer (D0); 0.4 gr/polybag (D1); 0.8 gr/polybag (D2); 1.2 gr/polybag (D3); 1.6 gr/polybag (D4); 2 gr/polybag (D5). The data obtained were analyzed using analysis of variance, and if the results were significantly different, the BNT test was continued at a 5% level. The growth and yield of red spinach showed significant differences due to the ZA fertilizer dose treatment. The ZA fertilizer dose treatment of 1.2 g/polybag (D3) resulted in the highest plant height, the number of leaves, and leaf area of red spinach at 14, 21, and 28 days after planting. The ZA fertilizer dose treatment of 1.2 g/polybag (D3) resulted in the highest wet and dry weight plants of 49.15 and 4.38 grams, respectively. The ZA 1.2 gr/polybag dose is the ideal dose to increase the productivity of red spinach.Bayam merah (Amaranthus gangeticus) termasuk sayuran penting yang disukai masyarakat karena bernilai gizi tinggi dan mudah pembudidayaannya. Upaya peningkatan hasil bayam merah salah satunya dengan pemupukan untuk menambah nutrisi yang dibutuhkan tanaman. Tujuan dari penelitian ini adalah mempelajari respon pertumbuhan dan hasil tanaman bayam merah pada perlakuan dosis pupuk ZA. Pelaksanaan penelitian ini menggunakan Rancangan Acak Lengkap (RAL) satu faktor. Faktor yang diujikan adalah dosis pupuk ZA, terdiri 6 taraf, yaitu: tanpa pupuk ZA (D0); 0.4 gr/polybag (D1); 0.8 gr/polybag (D2); 1.2 gr/polybag (D3); 1.6 gr/polybag (D4); 2 gr /polybag (D5). Percobaan dilakukan dengan ulangan sebanyak 4 kali. Analisis data menggunakan analysis of variance (ANOVA), apabila berbeda nyata dilanjutkan uji Beda Nyata Terkecil (BNT) taraf 5%. Perlakuan dosis pupuk ZA berpengaruh nyata terhadap pertumbuhan dan hasil tanaman bayam merah. Perlakuan dosis pupuk ZA 1.2 gr/polybag (D3) menghasilkan tinggi, jumlah dan luas daun tanaman bayam merah tertinggi pada pengamatan umur 14, 21, dan 28 HST. Dosis pupuk ZA 1.2 gr/polybag (D3) juga menunjukkan berat basah dan berat kering tanaman tertinggi sebesar 49.15 dan 4.38 gram. Dosis ZA 1.2 gr/polybag merupakan dosis ideal untuk meningkatkan produktivitas tanaman bayam merah.

scholarly journals In vitro antimicrobial activity and alternative control of anthracnose in papaya

2018 ◽  
Vol 85 (0) ◽  
Author(s):  
Héber Ferreira dos Reis ◽  
Lilian Maria Arruda Bacchi ◽  
Silvana de Paula Quintão Scalon ◽  
Jasna Karoliny Pereira Flores
Keyword(s):  
Colletotrichum Gloeosporioides ◽  
Syzygium Aromaticum ◽  
Alternative Control ◽  
Ginger Extract ◽  
Cinnamomum Zeylanicum ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
And Control

ABSTRACT: We evaluated the efficacy of natural products in the control of papaya anthracnose, in vitro and in vivo. The in vitro experiments for evaluation of mycelial growth used a completely randomized 10 × 4 factorial design (treatments × evaluation periods) with eight replicates, with sporulation evaluated at the end of the experiment. The treatments involved the use of aqueous extract at concentrations of 5 and 15% for Syzygium aromaticum (L.) Merr. & Perry (clove), Cinnamomum zeylanicum Breym (cinnamon), and Zingiber officinalis Rox. (ginger); 1 and 3% chitosan; the fungicide Prochloraz at 100 µg.mL-1; and a control (no treatment). For evaluating conidia germination, we used six treatments with five replicates. The treatments included 7.5% of each extract (clove, cinnamon, and ginger), 1.5% chitosan, and 50 µg.mL-1 of Prochloraz. For the in vivo experiment, “Formosa” papaya “Tainung 1” was used in a completely randomized design, with six treatments and four replicates to evaluate the severity of anthracnose caused by Colletotrichum gloeosporioides. The fruits were treated by immersion for 5 min with 15% clove, cinnamon, and ginger extracts, 8% chitosan, and control with distilled water, and immersion for 2 min in Prochloraz (33.75 g a.i./100 L). The treatments with 15% clove extract and 8% chitosan were effective in all evaluations, resulting in a viable alternative to the fungicide Prochloraz. The treatments with ginger extract were less effective and those with cinnamon offered intermediate control.

scholarly journals Germination test of Eucalyptus phaeotricha seeds

2018 ◽  
Vol 22 (9) ◽  
pp. 653-657 ◽  
Author(s):  
Carlos E. Affonso ◽  
Givanildo Z. da Silva ◽  
Tatiane S. Jeromini ◽  
Cibele C. Martins
Keyword(s):  
Dry Weight ◽  
Water Volume ◽  
Conduction Time ◽  
Germination Test ◽  
Randomized Design ◽  
Temperature Regimes ◽  
Seed Analysis ◽  
Completely Randomized Design ◽  
Mean Time ◽  
Temperature Conduction

ABSTRACT The rules for seed analysis do not have recommendations for conducting the germination test of Eucalyptus phaeotricha seeds. Thus, the aim of this study was to determine the best substrate, temperature, conduction time, and substrate moistening level for the germination test of E. phaeotricha seeds. First count of germination, germination, germination speed index and mean time of germination were evaluated. The first experiment was carried out in a completely randomized design, in a factorial scheme (6 x 2), corresponding to six temperature regimes (15, 20, 25, 30, 35 °C and 20-30 °C) and two substrates (paper and sand) with four replicates, and the means were compared by Tukey test at 0.05 probability level. In the second experiment, the germination test was installed with the most favorable substrate and temperature identified in the previous step, evaluating substrate moistening levels equivalent to 1.0, 1.5, 2.0, 2.5 and 3.0 times the dry weight of the substrate; due to the quantitative nature of the treatments, the data were subjected to regression analysis and curve fitting. The germination test of E. phaeotricha seeds should be conducted at 30 °C on paper, moistened with a water volume of 2.2 times the dry weight of the paper, with initial and final counts at 6 and 14 days after sowing, respectively.

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