News Update on Pepper Production Research: Feb – 2020

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News Update on Pepper Production Research: Feb – 2020

February 3, 2020 AGRICULTURE 0

Field evaluation of plant growth-promoting Rhizobacteria amended transplant mixes and soil solarization for tomato and pepper production in Florida

Field trials were performed in Florida to guage tomato and pepper transplants amended with formulations of several plant growth-promoting rhizobacteria (PGPR) during a production system that included soil solarization. Transplants grown in five different formulations of PGPR were planted into plots treated by soil solarization, MeBr fumigation, or untreated soil. Treatments were assessed for incidence of several present tomato and pepper pathogens including root-knot nematode (Meloidogyne incognita) and species of Pythium, Phytophthora, and Fusarium. Highly significant increases in tomato and pepper transplant growth occurred in response to most formulations of PGPR tested. Transplant vigor and survival within the field were improved by PGPR treatments in both tomato and pepper. Diseases of tomato caused by root-knot nematodes, Fusarium, Phytophthora, and Pythium weren’t suffering from PGPR treatments. [1]

Effects of plant growth-promoting rhizobacteria on bell pepper production and green peach aphid infestations in New York

Plant growth-promoting rhizobacteria (PGPR) are known in various cropping systems to extend plant growth and vigor, also as induce resistance to pathogens and pests. a billboard soil amendment containing a mix of two species of Bacillus PGPR (Bacillus subtilis and Bacillus amyloliquefaciens) was evaluated for impact on germination and initial growth of bell pepper plants, efficacy against the green peach aphid, Myzus persicae Sulzer, and yield enhancement. Studies within the greenhouse revealed that pepper germination rate and dry weight of seedlings grown with or without Bacillus spp. didn’t differ significantly. within the field, the PGPR didn’t significantly reduce aphid populations compared to regulate plants, whereas imidacloprid was highly effective. a rise in yield compared with control plants was observed within the 2003 season, but not the subsequent two seasons. Aphid pressure was high in 2003, and plants grown within the presence of Bacillus spp. exhibited substantial tolerance to aphids. [2]

Pythium spp. Associated with Bell Pepper Production in Florida

Ten species of Pythium and a gaggle of isolates that produced filamentous sporangia but didn’t form sexual structures (Pythium ‘group F’) were recovered from the basis systems of fresh market bell pepper plants grown on polyethylene-mulched production systems in Florida. Pathogenicity tests using pasteurized field soil inoculated with infested wheat seed demonstrated that P. aphanidermatum, P. myriotylum, P. helicoides, and P. splendens can cause significant plant disease and reductions in root growth of pepper. P. aphanidermatum and P. myriotylum caused the foremost severe plant disease , the best reductions in plant weight, and 42 and 62% plant mortality, respectively. In pathogenicity tests with tomato plants, these four species produced similar plant weight losses and disease ratings to those observed in pepper, but little or no plant mortality. [3]

Foliar application of the leaf-colonizing yeast Pseudozyma churashimaensis elicits systemic defense of pepper against bacterial and viral pathogens

Yeast associates with many plant parts including the phyllosphere, where it’s subject to harsh environmental conditions. Few studies have reported on biological control of foliar pathogens by yeast. Here, we newly isolated leaf-colonizing yeasts from leaves of field-grown pepper plants during a major pepper production area of South Korea . The yeast was isolated using semi-selective medium supplemented with rifampicin to inhibit bacterial growth and its disease control capacity against Xanthomonas axonopodis infection of pepper plants within the greenhouse was evaluated. Of 838 isolated yeasts, foliar spray of Pseudozyma churashimaensis strain RGJ1 at 108 cfu/mL conferred significant protection against X. axonopodis and unexpectedly against Cucumber mosaic virus, Pepper mottle virus, Pepper mild mottle virus, and Broad bean wilt virus under field conditions. [4]

Assessment of Pepper Production and Socio Economics of Pepper Farmers in Delta State, Nigeria

This study is concentrated pepper production and socio-economics of pepper producers in Delta State, Nigeria. Purposive sampling technique was wont to select 50 farmers out of the population of pepper farmers. Structured questionnaire was wont to collect the relevant information. Data collected were analysed with help of descriptive statistics and margin of profit analysis. The results of the study revealed that 44% of the pepper farmers fall within the age of 40-49 years and 54% had no formal education. The household size ranged from 6-10 persons, while about 72% of pepper farmers don’t belong to any cooperative society. The pepper producers were mostly small scale farmers, and 50% of them have a farming experience of 6-10 years. [5]

Reference

[1] Kokalis–Burelle, N., Vavrina, C.S., Rosskopf, E.N. and Shelby, R.A., 2002. Field evaluation of plant growth-promoting rhizobacteria amended transplant mixes and soil solarization for tomato and pepper production in Florida. Plant and Soil, 238(2), (Web Link)

[2] Herman, M.A.B., Nault, B.A. and Smart, C.D., 2008. Effects of plant growth-promoting rhizobacteria on bell pepper production and green peach aphid infestations in New York. Crop Protection, 27(6), (Web Link)

[3] Chellemi, D.O., Mitchell, D.J., Kannwischer-Mitchell, M.E., Rayside, P.A. and Rosskopf, E.N., 2000. Pythium spp. associated with bell pepper production in Florida. Plant disease, 84(12), (Web Link)

[4] Foliar application of the leaf-colonizing yeast Pseudozyma churashimaensis elicits systemic defense of pepper against bacterial and viral pathogens
Gahyung Lee, Sang-Heon Lee, Kyung Mo Kim & Choong-Min Ryu
Scientific Reports volume 7, (Web Link)

[5] Dennis, A. and Kentus, T. (2018) “Assessment of Pepper Production and Socio Economics of Pepper Farmers in Delta State, Nigeria”, Asian Journal of Agricultural Extension, Economics & Sociology, 28(2), (Web Link)

 

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