scholarly journals Suppressive effect of Orius spp. (Hemiptera : Anthocoridae) on the population density of thrips on green pepper plants covered by a 4-mm mesh net in open field

2012 ◽  
Vol 54 (0) ◽  
pp. 99-104 ◽  
Author(s):  
Masahiro Iguchi ◽  
Fusako Fukushima ◽  
Kazuki Miura
Keyword(s):  
Population Density ◽  
Open Field ◽  
Suppressive Effect ◽  
Green Pepper ◽  
Pepper Plants

scholarly journals In situ Impact of the Antagonistic Fungal Strain, Trichoderma gamsii T30 on the Plant Pathogenic Fungus, Rhizoctonia solani in Soil

2019 ◽  
Vol 68 (2) ◽  
pp. 211-216
Author(s):  
MUHAMMAD ANEES ◽  
MUHAMMAD ABID ◽  
SOBIA CHOHAN ◽  
MUHAMMAD JAMIL ◽  
NADEEM AHMED ◽  
...  
Keyword(s):  
Population Density ◽  
Rhizoctonia Solani ◽  
Pathogenic Fungus ◽  
Suppressive Effect ◽  
Fungal Strain ◽  
Soil Microbiome ◽  
Target Dna ◽  
Wide Range ◽  
First Time

Rhizoctonia solani is a soil-borne fungus causing a wide range of plants diseases. Trichoderma gamsii strain T30 has previously been reported as antagonistic against R. solani. Although there are a few studies about the influence of Trichoderma strains on the R. solani densityin a pathosystem in the presence of plant hosts, this report for the first time comprehensively describes in situ effects of a T. gamsii strain on the population density of R. solani in the soil microcosmic conditions. The population dynamics of R. solani were followed in the autoclaved and non-autoclaved soils in artificially prepared microcosms up to day 25 after co-inoculation with T. gamsii in the variable ratios (R1/T1; R1/T0.1; R1/T0.01 of R. solani/T. gamsii). The population density of R. solani was evaluated by qPCR. In the autoclaved soil, target DNA copies of R. solani increased in the control samples from 1 × 105 to 6.5 × 106. At R1/T0.01, the number of target DNA copies were not significantly changed until day 11; however, it decreased by around five times at day 25. At R1/T0.1 and R1/T1, the number of DNA copies was reduced to 2.1 × 106 and 7.6 × 105 at day 11, respectively and the reduction was as much as 17 times at day 25. In the non-autoclaved soil, the number of the fungal cells decreased at day 25 whether inoculated or not with Trichoderma indicating a general suppression by the soil microbiome. In brief, T. gamsii significantly inhibited the growth of R. solani in the soil in situ and there was a general suppressive effect of the natural microbiome.

scholarly journals Application times and doses of bovine and sheep biofertilizers in the morphophysiological characteristics of green pepper plants

2020 ◽  
Vol 16 (9) ◽  
Author(s):  
Ygor Henrique Leal ◽  
Thiago Jardelino Dias ◽  
Ana Carolina Bezerra ◽  
Marcia Paloma Da Silva Leal ◽  
Adriano Salviano Lopes ◽  
...  
Keyword(s):  
Green Pepper ◽  
Pepper Plants

scholarly journals Overwintering Viruliferous Frankliniella occidentalis (Thysanoptera: Thripidae) as an Infection Source of Tomato spotted wilt virus in Green Pepper Fields

Plant Disease ◽  
2007 ◽  
Vol 91 (7) ◽  
pp. 842-846 ◽  
Author(s):  
Shinichiro Okazaki ◽  
Mitsuru Okuda ◽  
Kazuhiro Komi ◽  
Hideaki Yoshimatsu ◽  
Toru Iwanami
Keyword(s):  
Tomato Spotted Wilt Virus ◽  
Frankliniella Occidentalis ◽  
Activity Level ◽  
Weed Species ◽  
Green Pepper ◽  
Source Of Infection ◽  
Tomato Spotted Wilt ◽  
Infection Source ◽  
Wilt Virus ◽  
Pepper Plants

Populations of overwintering viruliferous Frankliniella occidentalis were evaluated in Tomato spotted wilt virus (TSWV)-affected green pepper fields in Bungo-Ohno City, Oita Prefecture, Japan. A survey of TSWV-infected weeds showed that the incidence of infection was low in weeds. Stellaria aquatica was infected frequently; however, the infections were considered secondary cases since S. aquatica appeared in the fields around late February to early March. In contrast, TSWV was frequently detected from green pepper fruits until they rotted. F. occidentalis primarily inhabited and reproduced on the green pepper fruits and moved to Lamium amplexicaule when the fruits rotted and subsequently spread to other weed species as young shoots or flowers appeared. The flying activity level of F. occidentalis rose in late February, and viruliferous F. occidentalis transmitted TSWV to green pepper plants. We concluded that TSWV-infected green pepper fruits discarded in greenhouses and fields are the major source of infection.

scholarly journals Growth and Yield Responses of Green Pepper (Capsicum annum L.) to Manure Rates under Field and High Tunnel Conditions

2017 ◽  
Vol 9 (1) ◽  
pp. 137-142
Author(s):  
Ima-obong I. DOMINIC ◽  
Ndueso M. AKPAN ◽  
Kayode P. BAYERI
Keyword(s):  
Open Field ◽  
Poultry Manure ◽  
Pot Experiment ◽  
Growth And Yield ◽  
Green Pepper ◽  
High Tunnel ◽  
Number Of Leaves ◽  
Yield Responses ◽  
Medium Weight ◽  
Successful Production

The present study was conducted to determine growth and yield responses of green pepper to varying manure rates under field and high tunnel conditions. Experiment 1 was a pot experiment to evaluate three rates (0.5 and 10 t/ha) of poultry manure (PM) on green pepper production under high tunnel and open field conditions. Experiment 2 was to determine the performance of green pepper as influenced by different manure rates (0, 5 and 10 t/ha of PM, 300 kg/ha of NPK, 5 t/ha of PM + 200 kg of NPK and 10 t/ha of PM + 100 kg of NPK) on the field. High tunnel produced about 3.1 fruits/plant that weighted 102.8 g, which was significantly higher than open field experiment in which 1.7 fruits/plant, with a medium weight of 32.3 g were noted. High tunnel enhanced successful production of green pepper during rainy season, whereas the open field production during the same season was near failure. Application of 10 t/ha of PM produced significantly larger fruits in the pot experiment. Good fertilizer effects on growth and yield components were recorded for the field study. Plant height, number of leaves and branches, number and weight of harvested fruit followed similar trend in 5 and 10 t/ha of PM which gave statistically similar results, and provided the best performance during the experiment. Application of 5 t/ha of PM produced the highest total fruits yield. 

scholarly journals Salicylic Acid Foliar Application Increases Crop Yield and Quality Parameters of Green Pepper Fruit during Postharvest Storage

Agronomy ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 2263
Author(s):  
Alicia Dobón-Suárez ◽  
María J. Giménez ◽  
María E. García-Pastor ◽  
Pedro J. Zapata
Keyword(s):  
Salicylic Acid ◽  
Crop Yield ◽  
Fruit Quality ◽  
Foliar Application ◽  
Quality Parameters ◽  
Postharvest Storage ◽  
Green Pepper ◽  
Functional Quality ◽  
Pepper Fruit ◽  
Pepper Plants

The main aim of this study was to evaluate the effect of salicylic acid (SA) as a preharvest treatment on crop yield throughout the crop cycle of green pepper fruit as well as on its quality parameters, including functional quality, at harvest and during 21 days of storage at 7 °C. Thus, ‘Herminio’ pepper plants were treated with SA at 0.5, 1 and 5 mM, and higher crop yield (kg per plant, number of fruits per plant and average fruit weight) and quality parameters (firmness, green color and total acidity) at harvest were obtained with the 0.5 mM dose, as well as greater phenolic compounds content and total antioxidant activity. These quality traits and functional quality were also maintained at higher levels for this treatment than in controls during postharvest storage, leading to a delay of fruit quality losses. In addition, the decay incidence for 0.5 mM SA-treated pepper fruits reached a value of 2.10% at the end of the storage, which was lower than untreated fruits (16.55%). These results suggest that preharvest application of SA at low doses tested on pepper plants could be a useful tool to increase crop yield and fruit quality parameters at harvest and maintain them during storage, delaying quality losses and decay incidence.

scholarly journals Photosynthetic Acclimation of Sweet Pepper Plants to Screenhouse Conditions

HortScience ◽  
2014 ◽  
Vol 49 (2) ◽  
pp. 166-172 ◽  
Author(s):  
Evagelini Kitta ◽  
Nikolaos Katsoulas ◽  
Anna Kandila ◽  
Maria M. González-Real ◽  
Alain Baille
Keyword(s):  
Gas Exchange ◽  
Open Field ◽  
Leaf Gas Exchange ◽  
Mediterranean Area ◽  
Sweet Pepper ◽  
Light Acclimation ◽  
Light Regimes ◽  
Wide Range ◽  
Pepper Leaves ◽  
Pepper Plants

Leaf gas exchange and photosynthetic light acclimation of sweet pepper leaves were investigated in a Mediterranean area (central Greece) in the open field and in three screenhouse nets differing in color, shading intensity (SI), and porosity from May to Oct. 2011. The screenhouse nets were two insect-proof white nets (W13 and W34, SI = 13% and 34%, respectively) and a green shading net (G36, SI = 36%). Leaf net CO2 assimilation (An), transpiration rate (E), and stomatal conductance (gS) were measured by means of a portable gas exchange device on leaves located in three canopy layers. The differences in light regime within the canopy induced by the three shading nets had only a slight effect on An, thereby resulting in substantially higher light-use efficiency under shading than in the open field. The observed tendency toward higher gS in shaded plants was counterweighted by a lower intercellular-to-ambient CO2 concentration gradient, leading to similar An in leaves of shaded and non-shaded plants. Ontogenic effects (leaf aging) appeared to be the main factor determining the decreasing seasonal trend of leaf photosynthetic attributes. Overall, shaded sweet pepper plants display a physiological light acclimation allowing them to maintain the photosynthetic activity to a level similar to that observed in non-shaded plants across a wide range of growth light regimes, irrespective of the type of net and its shading intensity.

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