scholarly journals Perlakuan Rizobakteri Terhadap Patogen Terbawa Benih dan Peranannya Sebagai Pemacu Pertumbuhan Tanaman Terhadap Viabilitas dan Vigor Benih Pada Dua Varietas Cabai Merah (Capsicum annuum L.)

2020 ◽  
Vol 4 (1) ◽  
pp. 219-228
Author(s):  
Malikul Mulki ◽  
Halimursyadah Halimursyadah ◽  
Syamsuddin Syamsuddin
Keyword(s):  
Plant Growth ◽  
Capsicum Annuum ◽  
Seed Treatment ◽  
Phytophthora Capsici ◽  
Seed Viability ◽  
Agricultural Science ◽  
Colletotrichum Capsici ◽  
Capsicum Annuum L ◽  
Randomized Design ◽  
Completely Randomized Design

Abstrak. Rendahnya produksi tanaman cabai merah di Indonesia antara lain disebabkan oleh serangan penyakit dan tidak tersedianya benih yang bermutu tinggi atau memiliki viabilitas yang rendah. Perlakuan benih secara hayati (Biological Seed Treatment) menggunakan rizobakteri merupakan salah satu inovasi yang dikembangkan untuk pengendalian penyakit dan pemacu pertumbuhan tanaman. Penelitian ini telah dilaksanakan di Laboratorium Ilmu dan Teknologi Benih Program Studi Agroteknologi Fakultas Pertanian Unsyiah. Penelitian dimulai sejak bulan Mei hingga Juli 2017. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) pola non faktorial pada percobaan I terdiri dari 18 perlakuan yang diulang sebanyak 3 kali sehingga didapatkan masing-masing 54 satuan percobaan terhadap patogen Phytophthora capsici dan 54 satuan percobaan terhadap patogen Colletotrichum capsici sehingga didapatkan 108 total satuan percobaan. Pada perobaan II menggunakan Rancangan Acak Lengkap (RAL) pola faktorial terdiri dari 19 perlakuan rizobakteri dan 2 perlakuan varietas yang diulang sebanyak 2 kali Sehingga terdapat 38 kombinasi perlakuan yang terdiri dari 48 unit percobaan dengan 25 unit tanaman di setiap perlakuan. Hasil penelitian percobaan I menunjukkan bahwa isolat SRK 5(1) yang berasal dari Desa Serulee Kayu, Kecamatan Bukit, Kabupaten Bener Meuriah mampu menekan pertumbuhan patogen C. capsici dengan nilai daya hambat 82,22% dan terhadap patogen P. capsici 71,11%. Hasil percobaan II menunjukkan bahwa rizobakteri yang efektif sebagai pemacu pertumbuhan tanaman (RPPT) terhadap proses perkecambahan benih cabai merah dalam meningkatkan viabilitas dan vigor benih terhadap potensi tumbuh maksimum dan daya berkecambah adalah isolat KTK 8(5) dimana varietas PM999 lebih baik dibandingkan varietas Taro, namun isolat yang berbeda yaitu SRK 5(1), HWI 4(1) dan BS3 5(3) mampu meningkatkan indeks vigor pada varietas Taro yang lebih tinggi dibandingkan dengan varietas PM999. Sedangkan pengaruh perlakuan rizobakteri terhadap pertumbuhan bibit cabai merah belum menunjukkan peningkatan yang signifikan terhadap dua varietas yang dicobakan.Effectiveness of rizobacteria inhibition to Pathogens Carried Seed In vitro and its role as plant growth promoting to seed viability and vigor in two varieties red chili pepper (Capsicum annuum L.)Abstract. The low production of red pepper plants in Indonesia is partly caused by disease attacks and unavailability of high quality seeds or have low viability. Biological Seed Treatment using rhizobacteria is one of the innovations developed for disease control and growth of plants. This research has been carried out in Agricultural Science and Technology Laboratory of Agrotechnology Study Program Faculty of Agriculture Unsyiah. The study was conducted from May to July 2017. This study used a Completely Randomized Design (RAL) of non factorial pattern in experiment I consisted of 18 treatments repeated 3 times so that each of 54 experiments on pathogenic Phytophthora capsici and 54 units of experiments was obtained pathogen Colletotrichum capsici to obtain 108 total unit of experiment. In the second experiment using Completely Randomized Design (RAL) the factorial pattern consisted of 19 rizobacterial treatments and 2 repeated treatments of varieties 2 times. Thus there were 38 treatment combinations consisting of 48 experimental units with 25 plant units in each treatment. The result of experiment I showed that isolate SRK 5 (1) from Serulee Kayu Village, Bukit Subdistrict, Bener Meuriah Regency was able to suppress the growth of C. capsici pathogens with 82.22% inhibition and against P. capsici 71.11% . The results of experiment II showed that rizobakteri effective as plant growth enhancer (RPPT) to germination process of red chilli seedlings in increasing seed viability and vigor to maximum growth potential and germination is isolate KTK 8 (5) where the varieties of PM999 is better than Taro varieties, but the different isolates of SRK 5 (1), HWI 4 (1) and BS3 5 (3) were able to increase the vigor index on higher Taro varieties compared to the PM999 varieties. While the effect of rizobacterial treatment on the growth of red chili seedlings has not shown a significant increase in the two varieties tested.

scholarly journals Seed treatment using rhizobacteria as plant growth promotion of two chili variety (Capsicum annuum L.)

2022 ◽  
Vol 951 (1) ◽  
pp. 012060
Author(s):  
Syamsuddin ◽  
Halimursyadah ◽  
Samingan ◽  
V Maulidia
Keyword(s):  
Plant Growth ◽  
Capsicum Annuum ◽  
Plant Growth Promotion ◽  
Vegetative Growth ◽  
Seed Treatment ◽  
Growth Promotion ◽  
Growth And Yield ◽  
Capsicum Annuum L ◽  
Randomized Design ◽  
Chili Peppers

Abstract The research aims to find out the effect of pre-germination treatment seeds using rhizobacteria as plant growth promotion of two varieties of red chili peppers in the field. The experiment used a randomized design of factorial groups. Factors studied were varieties (V) and rhizobacteria types (R). The variety factor consists of 2 varieties namely PM999 (V1) and Kiyo F1 (V2). While the type of rhizobacteria factor tried consists of 8 treatment, namely, control (R0), Azotobacter sp. (R1), B. megaterium (R2), P. atmuta (R3), B. alvei (R4), Flavobacterium sp. (R5), B. coagulans (R6), B. firmus (R7) and B. pilymixa (Rs). Each treatment was repeated 3 times, so there were 48 experimental units. Each unit of experiment is represented by 5 sample plants. The data was analyzed using ANOVA and continued with DMRT test at real level α = 0.05. The results showed that vegetative growth and production of chili plants until the age of 45 days after planting in each variety is not dependent on the pre-germination treatment of seeds with rhizobacteria. But the varieties of chili plants used affect vegetative growth and production. PM999 varieties are superior to the Kiyo F1 variety. Pre-germination treatment of seeds using rhizobacteria is relatively effective in improving vegetative growth and yield of chili plants. Among the 8 isolates rizobacteria isolate Azotobacter sp., B. megaterium, B. coagulants, Flavobacterium sp., and P. atmuta relatively effective to provide an increased effect on the growth and production of chili plants.

scholarly journals Respons Tanaman Cabai Besar (Capsicum annuum L.) Terhadap Pemberian Pupuk Organik Hormon Tanaman Unggul

Agrologia ◽  
2018 ◽  
Vol 2 (2) ◽  
Author(s):  
M. A Ralahalu ◽  
Meity L Hehanussa ◽  
L.L Oszaer
Keyword(s):  
Plant Growth ◽  
Capsicum Annuum ◽  
Plant Hormone ◽  
Organic Fertilizer ◽  
Fruit Weight ◽  
Growth And Yield ◽  
Capsicum Annuum L ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Research Experiment

This research aimed to study the responses of large chilli plants (Capsicum annuum L.) to treatment with superior plant hormone organic fertilizer and to obtain the optimal concentration of superior plant hormone organic fertilizer on growth and yield of plants. The research was conducted at Gunung Nona, Benteng Village, Nusaniwe Subdistrict, Ambon City, from April to September 2012. The research experiment was arranged in a Completely Randomized Design (CRD) with 3 replications. The experimental factor was the concentration of superior plant hormone organic fertilizer, consisting of P0 = without fertilizer (control),   P1 = 1 ml/l, P2 = 2 ml/l, P3 = 3 ml/l, and P4 = 4 ml/l. The results showed that the concentration of superior plant hormone organic fertilizer influenced significantly on plant growth and yield of large chilli plants, and at a treatment of 3 ml / l  the number of harvested fruit per plant was 70,58 and fruit weight was 241.67 grams

scholarly journals Growth of four types of Capsicum spp. in substrates under a protected environment

2021 ◽  
Vol 38 (4) ◽  
pp. 902-912
Author(s):  
Francisco Ruiz-Espinoza ◽  
Juan Rodríguez-Ortiz ◽  
Félix Beltrán-Morales ◽  
Fernando Carballo-Méndez
Keyword(s):  
Plant Growth ◽  
Capsicum Annuum ◽  
Environmental Conditions ◽  
Soil Conditions ◽  
Capsicum Annuum L ◽  
Randomized Design ◽  
Capsicum Spp ◽  
Completely Randomized Design ◽  
Chili Peppers

Plant growth depends on environmental conditions, management conditions and soil conditions, which is why in this research we evaluated the growth of chili peppers in a sand-based substrate, under a protected environment. The treatments evaluated were: 1) soil (control), 2) sand, 3) sand-perlite (4:1) and 4) sand-perlite (1.5:1), which were established under a completely randomized design with six replications. The species used were Capsicum annuum L. Hungarian, serrano and jalapeño types, and Capsicum pubescens Ruiz & Pav. apple type. The sand-perlite mixtures benefited the growth of the chili peppers, with respect to soil and sand. Therefore, sand-perlite mixtures should be considered as an alternative to produce chili peppers in containers.

scholarly journals Perlakuan Rizobakteri Pada Dua Varietas Tomat (Lycopersicum esculentum Mill.) Terhadap Patogen Terbawa Benih dan Peranannya Dalam Pemacu Pertumbuhan Tanaman

2020 ◽  
Vol 4 (1) ◽  
pp. 239-248
Author(s):  
Amelia Syahdani ◽  
Siti Hafsah ◽  
Syamsuddin Syamsuddin
Keyword(s):  
Plant Growth ◽  
Rhizoctonia Solani ◽  
Seed Treatment ◽  
Sclerotium Rolfsii ◽  
Seed Viability ◽  
Test Method ◽  
Lycopersicum Esculentum ◽  
Randomized Design ◽  
Completely Randomized Design

Abstrak. Tomat merupakan salah satu produk hortikultura yang sangat banyak diminati di kalangan masyarakat karena dapat dimanfaatkan sebagai bumbu masakan, pewarna makanan, kosmetik dan obat-obatan, namun tanaman ini sering diserang oleh organisme pengganggu tanaman khususnya penyakit. Perlakuan benih secara hayati (Biological Seed Treatment) menggunakan rizobakteri merupakan salah satu inovasi yang dikembangkan untuk pengendalian penyakit dan pemacu pertumbuhan tanaman. Penelitian ini telah dilaksanakan di Laboratorium Ilmu dan Teknologi Benih Program Studi Agroteknologi Fakultas Pertanian Unsyiah. Penelitian dimulai sejak bulan Mei hingga Agustus 2017. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) pola non faktorial pada percobaan I terdiri dari 18 perlakuan yang diulang sebanyak 3 kali sehingga didapatkan masing-masing 54 satuan percobaan terhadap patogen Rhizoctonia solani dan 54 satuan percobaan terhadap patogen Sclerotium rolfsii sehingga didapatkan 108 total satuan percobaan. Pada perobaan II menggunakan Rancangan Acak Lengkap (RAL) pola faktorial terdiri dari 19 perlakuan rizobakteri dan 2 perlakuan varietas yang diulang sebanyak 2 kali Sehingga terdapat 38 kombinasi perlakuan yang terdiri dari 48 unit percobaan dengan 25 unit tanaman di setiap perlakuan. Hasil pengujian in vitro percobaan I dengan menggunakan metode uji kultur ganda dari 18 isolat rizobakteri terdapat lima isolat yang berpotensi sebagai agens biokontrol dengan memiliki daya hambat paling efektif yaitu HWI 4(1), HWI 5(1), HWI 5(4), HWI 8(6) dan BS3 4(5) terhadap Rhizoctonia solani namun memiliki daya hambat yang relatif rendah terhadap patogen Sclerotium rolfsii. Sedangkan pada Hasil penelitian percobaan II menunjukkan bahwa isolat yang efektif sebagai rizobakteri pemacu pertumbuhan tanaman (RPPT) terhadap proses perkecambahan benih tomat dalam meningkatkan viabilitas dan vigor benih adalah isolat SRK 5(3) dan HWI 4(5). Pada parameter pertumbuhan bibit isolat SRK 5(5) dan HWI 5(4) cenderung menunjukkan pengaruh yang efektif dibandingkan perlakukan lainnya. Varietas Servo lebih baik dibandingkan varietas Lentana terhadap viabilitas dan vigor benih. Treatment of Rizobakteri In Two Tomato Varieties (Lycopersicum esculentum Mill.) to pathogen carried seed and its role plant growth promotingAbstract. Tomato is one of the most popular horticultural products in the community because it can be used as food spices, food coloring, cosmetics and medicines, but this plant is often attacked by plant pest organisms, especially diseases. Biological Seed Treatment using rhizobacteria is one of the innovations developed for disease control and growth of plants. This research has been carried out in Agricultural Science and Technology Laboratory of Agrotechnology Majors Faculty of Agriculture Unsyiah. The study was conducted from May to August 2017. This study used a Completely Randomized Design (RAL) of non factorial pattern in experiment I consisted of 18 repeated treatments 3 times so that each of 54 experiments on pathogenic Rhizoctonia solani and 54 units of experiments Sclerotium rolfsii pathogens to obtain 108 total unit experiments. In the second experiment using Completely Randomized Design (RAL) the factorial pattern consisted of 19 rhizobacterial treatments and 2 repeated treatments of varieties 2 times. Thus there were 38 treatment combinations consisting of 48 experimental units with 25 plant units in each treatment. In vitro experimental results of experiment I using double culture test method from 18 rizobakteri isolates, there are five isolates that have potential as biocontrol agent with the most effective inhibition of HWI 4 (1), HWI 5 (1), HWI 5 (4), HWI 8 (6) and BS3 4 (5) to Rhizoctonia solani but have relatively low inhibitory resistance to Sclerotium rolfsii pathogens. While the results of the experimental study II showed that the effective isolates as plant growth rhizobacteria (RPPT) on the tomato seed germination process in increasing seed viability and vigor are isolates SRK 5 (3) and HWI 4 (5). In the growth parameters of seed isolates SRK 5 (5) and HWI 5 (4) tended to show an effective effect compared to other treatments. Servo variety is better than Lentana varieties on seed viability and vigor.

scholarly journals MORPHOLOGY AND YIELD OF PAPRIKA PEPPER IN RESPONSE TO METHOD OF STAND ESTABLISHMENT

HortScience ◽  
1993 ◽  
Vol 28 (4) ◽  
pp. 275H-275
Author(s):  
Brian A. Kahn ◽  
James R. Cooksey ◽  
James E. Motes
Keyword(s):  
Plant Growth ◽  
Capsicum Annuum ◽  
Seed Treatment ◽  
Plant Morphology ◽  
Fruit Yield ◽  
Direct Seeding ◽  
Stand Establishment ◽  
Capsicum Annuum L ◽  
Marketable Fruit

Raw seed, primed seed, and transplants were compared for effects on stand establishment, plant morphology, and yield of paprika pepper (Capsicum annuum L.) Raw seed seemed satisfactory for stand establishment, although primed seed had the potential to provide better initial stands. When populations were equalized, there were few differences in plant growth, plant morphology, or fruit yield attributed to seed treatment. Morphology of plants established by direct seeding generally was favorable for mechanical harvest. Use of transplants did not result in higher marketable fruit yields than direct seeding in two out of three years. When compared to plants established by direct seeding, three trends were consistent across all three years for plants established by transplanting: a) they were more massive: b) they had larger vertical fruiting planes: and c) they had more branches. These traits would increase the difficulty of mechanical harvest and would create the potential for more trash in the harvested product. Thus, transplanting is not recommended for stand establishment of paprika intended for mechanical harvest.

scholarly journals Pengaruh Dosis Pupuk NPK dan Pemangkasan Tunas Lateral Terhadap Pertumbuhan dan Hasil Tanaman Semangka (Citrullus vulgaris Schard)

2020 ◽  
Vol 3 (2) ◽  
pp. 109-116
Author(s):  
Azzura Azzura ◽  
Nanda Mayani ◽  
Bakhtiar Bakhtiar
Keyword(s):  
Seed Viability ◽  
Agricultural Science ◽  
Growth Potential ◽  
Dose Effect ◽  
Study Program ◽  
Citrullus Vulgaris ◽  
Randomized Design ◽  
Lateral Shoots ◽  
Npk Fertilizer ◽  
Completely Randomized Design

Abstrak. Salah satu teknik budidaya untuk mendapatkan hasil semangka yang baik adalah dengan pemupukan yang tepat dan pemangkasan. Jenis pupuk anorganik yang digunakan dalam budidaya tanaman semangka adalah pupuk NPK Majemuk. Sementarapemangkasan adalah suatu kegiatan membuang bagian tanaman yaitu bagian pucuk, cabang atau ranting tanaman sehingga terjadi penimbunan karbohidrat, protein dan hormon yang merangsang keluarnya bunga dan buah. Penelitian dilaksanakan di Desa Paloh Jeureula, Kecamatan Sakti Kabupaten Pidie dan Laboratorium Hortikultura Fakultas Pertanian Universitas Syiah Kuala yang berlangsung dari bulan September sampai November 2017. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) pola faktorial yang terdiri dari 4 perlakuan dosis pupuk NPK dan 2 perlakuan pemangkasan yang diulang sebanyak 3 kali sehingga terdapat 8 kombinasi perlakuan yang terdiri dari 24 unit percobaan dengan 6 sampel untuk setiap unit percobaan. Hasil penelitian menunjukkan bahwa dosis pupuk NPK yang tepat untuk pertumbuhan dan hasil tanaman semangka yaitu 160 g/tanaman, sementara pemangkasan tunas yang terbaik untuk pertumbuhan dan hasil tanaman semangka yaitu pemangkasan tunas lateral. Kombinasi perlakuan yang terbaik untuk pertumbuhan dan hasil tanaman semangka yaitu dosis pupuk NPK 160 g/tanaman dengan pemangkasan tunas lateral.The Dose Effect of NPK Fertilizer and Pruning of Watermelon Lateral Shoots on Growth and Plant Result (Citrullus vulgaris Schard)Abstract. The low production of red pepper plants in Indonesia is partly caused by disease attacks and unavailability of high quality seeds or have low viability. Biological Seed Treatment using rhizobacteria is one of the innovations developed for disease control and growth of plants. This research has been carried out in Agricultural Science and Technology Laboratory of Agrotechnology Study Program Faculty of Agriculture Unsyiah. The study was conducted from May to July 2017. This study used a Completely Randomized Design (RAL) of non factorial pattern in experiment I consisted of 18 treatments repeated 3 times so that each of 54 experiments on pathogenic Phytophthora capsici and 54 units of experiments was obtained pathogen Colletotrichum capsici to obtain 108 total unit of experiment. In the second experiment using Completely Randomized Design (RAL) the factorial pattern consisted of 19 rizobacterial treatments and 2 repeated treatments of varieties 2 times. Thus there were 38 treatment combinations consisting of 48 experimental units with 25 plant units in each treatment. The result of experiment I showed that isolate SRK 5 (1) from Serulee Kayu Village, Bukit Subdistrict, Bener Meuriah Regency was able to suppress the growth of C. capsici pathogens with 82.22% inhibition and against P. capsici 71.11% . The results of experiment II showed that rizobakteri effective as plant growth enhancer (RPPT) to germination process of red chilli seedlings in increasing seed viability and vigor to maximum growth potential and germination is isolate KTK 8 (5) where the varieties of PM999 is better than Taro varieties, but the different isolates of SRK 5 (1), HWI 4 (1) and BS3 5 (3) were able to increase the vigor index on higher Taro varieties compared to the PM999 varieties. While the effect of rizobacterial treatment on the growth of red chili seedlings has not shown a significant increase in the two varieties tested.The Dose Effect of NPK Fertilizer and Pruning of Watermelon Lateral Shoots onGrowth and Plant Result (Citrullus vulgaris Schard)

scholarly journals PENGARUH INFEKSI TMV (TOBACCO MOSAIC VIRUS) TERHADAP PERTUMBUHAN VEGETATIF DAN GENERATIF BEBERAPA VARIETAS CABAI MERAH (CAPSICUM ANNUUM L.)

2003 ◽  
Vol 3 (1) ◽  
pp. 10-12
Author(s):  
Hasriadi Mat Akin ◽  
Muhammad Nurdin
Keyword(s):  
Tobacco Mosaic Virus ◽  
Mosaic Virus ◽  
Capsicum Annuum ◽  
Growth And Yield ◽  
Hot Pepper ◽  
Capsicum Annuum L ◽  
Randomized Design ◽  
Tobacco Mosaic Virus Infection ◽  
Completely Randomized Design ◽  
Mosaic Virus Infection

Influence of  tobacco mosaic virus infection to vegetative and generative growth of various hot pepper varieties  (Capsicum annuum L.). This experiment was conducted to investigate the effect of TMV infection on vegetative and generative growth of various hot pepper varieties. Treatments were arranged in completely randomized design in split plot experiment with four replications. Mainplots were virus-inoculated and uninoculated plants; subplots were three hot pepper varieties: Cimerti, HP-Typhoon, and HP-Tornado. The results of the experiment showed that TMV infection caused decrease vegetative and generative growth.  The decrease of vegetative and generative growth  indicated by the reduction of leaf width, plant height, and yield.  HP-Tornado and Cimerti varieties showed susceptible reaction proved by significant reduction of the growth and yield;  HP-Typhoon was tolerance reaction to TMV infection indicated by significant reduction of the growth and lowest reduction of the yield.

scholarly journals Various Shallot Seed Treatments with Trichoderma to Increase Growth and Yield on Sandy Coastal

2017 ◽  
Vol 1 (3) ◽  
pp. 094 ◽  
Author(s):  
Stefany Darsan ◽  
Endang Sulistyaningsih ◽  
Arif Wibowo
Keyword(s):  
Plant Growth ◽  
Seed Treatment ◽  
Growth And Yield ◽  
Area Index ◽  
Randomized Design ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Completely Randomized Design ◽  
Net Assimilation ◽  
Coastal Land

Sandy coastal area is a poor land, with minimal nutrients and low ability to store water and nutrition. Therefore, plant is difficult to grow well, consequently the treatments for improving sandy coastal is required before planting to support their growth. Application of Trichoderma as a plant-growth promoting and controlling pathogens had been known. Shallot seed treatment by Trichoderma agents was intended to improve and support plant growth and yield in the sandy coastal land. The aim of experiment was to determine the most effective treatment to improve growth and yield of shallot on sandy coastal land. The experiment had been carried out in Yogyakarta during August - November 2015. The factorial treatments of cultivar and Trichoderma applications were arranged in Completely Randomized Design with three replications. The shallot cultivars consisted of Tiron, Crok, and Biru, while Trichoderma application consisted of control (no treatment), sprayed with Trichoderma, soaked in Trichoderma, matricontioning media i.e. rice husk charcoal and brick in combination with Trichoderma. The collected data related to plant growth and yield. The result showed that seed treatment methods with Trichoderma increased the plant height, the leaf area index, extensive root, net assimilation rate (NAR), plant growth rate (PGR), Nitrate Reductase Activities (NRA), total chlorophyll, and fresh bulb weight. The best technical treatment for cultivar Tiron was soaked with Trichoderma, and Crok was sprayed with Trichoderma, while Biru cultivar was using brick in combination with Trichoderma.

scholarly journals Seed treatment for management of Meloidogyne javanica in soybean

2017 ◽  
Vol 38 (5) ◽  
pp. 2995 ◽  
Author(s):  
Adriely Alves de Almeida ◽  
Vinicius Hicaro Frederico Abe ◽  
Ricardo Marcelo Gonçalves ◽  
Maria Isabel Balbi-Peña ◽  
Débora Cristina Santiago
Keyword(s):  
Seed Treatment ◽  
Meloidogyne Javanica ◽  
Vitro Assay ◽  
Juvenile Mortality ◽  
Second Stage ◽  
Final Population ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Soybean Plants

The objective of this study was to evaluate the efficacy of the active ingredient abamectin, either in isolation or in combination with fungicides and insecticides formulated for the industrial seed treatment, on the population of Meloidogyne javanica, tested under greenhouse and in vitro conditions. In both tests, the combination of the following treatments was assessed: abamectin; thiamethoxam; fludioxonil + metalaxyl-M + thiabendazole. Water was used as control for the in vitro assay, whereas under greenhouse conditions, controls were inoculated and not inoculated with M. javanica. The tests were conducted in a completely randomized design with six (in vitro) and ten (greenhouse) replicates. For in vitro studies the effect on hatching, motility, and mortality of juveniles of M. javanica was evaluated. Under greenhouse conditions, the soybean ‘BRS 133’ seeds were treated, and at 15, 30, and 60 days after inoculation (DAI) with M. javanica, plant measurements were recorded. The penetration of second stage juveniles (J2) was also evaluated at 15 DAI. At 30 DAI, galls, egg masses, nematodes/g of root, and final population were evaluated. At 60 DAI, the final population of nematodes in the roots was quantified. The treatments containing abamectin were the most effective in diminishing the hatching of juveniles. All treatments had an effect on nematode motility when compared to the control, and in the treatment containing only abamectin, total juvenile mortality was observed. In greenhouse conditions, at 15 DAI, the treated soybean plants had the highest root mass and shoot length, differing statistically from the inoculated control. All treatments reduced the number of nematodes per gram of root, differing from the control. At 30 DAI, treatment efficiency was observed in reducing the final population of M. javanica, particularly the treatments using abamectin, and abamectin + thiamethoxam + fludioxonil + metalaxyl-M + thiabendazole. However, at 60 DAI, the effect of the treatments on the population of M. javanica did not persist.

Alterations in peroxidase activity and phenylpropanoid metabolism induced by Nacobbus aberrans Thorne and Allen, 1944 in chilli (Capsicum annuum L.) CM334 resistant to Phytophthora capsici Leo.

2010 ◽  
Vol 338 (1-2) ◽  
pp. 399-409 ◽  
Author(s):  
Noé López-Martínez ◽  
Ma. Teresa Colinas-León ◽  
Cecilia B. Peña-Valdivia ◽  
Yolanda Salinas-Moreno ◽  
Patricia Fuentes-Montiel ◽  
...  
Keyword(s):  
Capsicum Annuum ◽  
Peroxidase Activity ◽  
Phytophthora Capsici ◽  
Phenylpropanoid Metabolism ◽  
Capsicum Annuum L ◽  
Nacobbus Aberrans
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