Chalky spot damage caused by stink bugs on red lentil seeds in Southeast Anatolia Region, Turkey

2016 ◽  
Author(s):  
Çetin Multu ◽  
Vedat Karaca ◽  
Sedat Eren ◽  
Musa Buyuk ◽  
Celalettin Gozuacik ◽  
...  
Keyword(s):  
Plant Health ◽  
Control Methods ◽  
Stink Bugs ◽  
Positive Relation ◽  
Environmental Friendly ◽  
Unsprayed Plot ◽  
Southeast Anatolia ◽  
Future Work ◽  
Average Damage

Chalky spot damage on red lentil is the most important problem waiting for a solution regarding plant health at lentil cultivation in Southeast Anatolia Region, Turkey. The stink bugs, Piezedorus lituratus (F.) and Dolycorus baccarum L. were subjected to trials in cages and in sprayed and unsprayed plot trials in open lentil fields and fields containing windrowed lentils after harvesting. The study revealed that P. lituratus and D. baccarum feeding on red lentil caused chalky spot damage. Average damage to lentil seeds caused by P. lituratus was 13% and 7.8% and by D. baccarum was 4.9% and 2% in 2010 and 2011, respectively. There was a positive relation between P. lituratus density and chalky spot damage (r =0.788, r2 =0.621, P=0.000). The study also showed that after the harvesting, the stink bugs gathered under windrowed lentils and continued feeding and causing chalky spot damage. The damage in unsprayed windrowed lentils (6.60%) was approximately 12-fold higher than that in sprayed windrowed lentils (0.57%). Study suggests conduction of future work on environmental friendly control methods of stink bugs and alternative harvesting methods.

Evaluating the Relationships among Attitude toward Business, Product Satisfaction, Experience, and Search Effort

1979 ◽  
Vol 16 (3) ◽  
pp. 394-400 ◽  
Author(s):  
Ronald D. Anderson ◽  
Jack L. Engledow ◽  
Helmut Becker
Keyword(s):  
Factor Analysis ◽  
Confirmatory Factor Analysis ◽  
Information Search ◽  
Structural Model ◽  
Positive Relation ◽  
Search Effort ◽  
Confirmatory Factor ◽  
Attitude Toward Business ◽  
Future Work ◽  
Lisrel Model

A simple structural model relating attitudes toward business to product satisfaction, experience in shopping, and search effort is proposed and tested by use of confirmatory factor analysis (COFAMM) and the LISREL model. The fact that the basic hypotheses of the model are supported suggests a positive relation between business attitude and product satisfaction and a negative one between business attitude and information search. The LISREL model is seen as a useful tool in future work in structural modeling.

Effect of Florpyrauxifen-benzyl Formulation and Rate for Waterhyacinth Control in a Mesocosm Setting

2021 ◽  
pp. 1-17
Author(s):  
Christopher R. Mudge ◽  
Gray Turnage ◽  
Michael D. Netherland
Keyword(s):  
Eichhornia Crassipes ◽  
Field Trials ◽  
Effective Control ◽  
Control Methods ◽  
Limited Information ◽  
National Legislation ◽  
Plant Recovery ◽  
Synthetic Auxin ◽  
Future Work ◽  
The U.S

Abstract Waterhyacinth (Eichhornia crassipes) has been the focus of national legislation efforts and has been listed as noxious, invasive, potentially invasive, or prohibited by at least seven U.S. states. Auxinic herbicides are one of the most effective control methods labeled for use in aquatic sites. In the U.S., florpyrauxifen-benzyl, a synthetic auxin, was recently (2018) registered for use in aquatic sites, but limited information has been published on efficacy, especially differences between the two formulations. Therefore, the purpose of this work was to evaluate two formulations of florpyrauxifen-benzyl – suspension concentrate (SC) and emulsifiable concentrate (EC) – at three rates each (5.9, 11.8, and 23.6 g a.i. ha-1) for control of waterhyacinth under outdoor and greenhouse conditions. All rates of each florpyrauxifen-benzyl formulation reduced waterhyacinth biomass by 90 to 100% when compared to non-treated plants at five weeks after treatment (WAT). Based on plant recovery in the outdoor trial, there was some evidence that the lowest rate (5.9 g a.i. ha-1) of florpyrauxifen-benzyl SC and EC may not be as efficacious at reducing waterhyacinth biomass as the SC and EC formulations when applied at 11.8 and 23.6 g a.i. ha-1. Future work should evaluate the florpyrauxifen-benzyl rates tested in this research against waterhyacinth in field trials and/or an operational setting to confirm findings.

Evaluation of Economically Viable and Environmental Friendly Weed Control Methods for Wheat (Triticum aestivum L.)

2020 ◽  
Author(s):  
M. Abu Hena Sorwar Jahan ◽  
Akbar Hossain ◽  
Muhammad Arshadul Hoque ◽  
Kowshik Kumar Saha ◽  
Khokan Kumer Sarker ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Weed Control ◽  
Triticum Aestivum L ◽  
Control Methods ◽  
Environmental Friendly

scholarly journals Lipid-based bio-fungicides for control of powdery mildew in cucurbits

2018 ◽  
Vol 71 ◽  
pp. 262-271 ◽  
Author(s):  
Annette Ah Chee ◽  
Maureen George ◽  
Maryam Alavi ◽  
Kirstin Wurms
Keyword(s):  
Powdery Mildew ◽  
Milk Fat ◽  
Plant Health ◽  
Milk Products ◽  
Animal Fats ◽  
Organic Systems ◽  
Wide Range ◽  
New Generation ◽  
Future Work ◽  
Demethylation Inhibitor

Powdery mildew (PM) infection of cucurbits is a major problem facing commercial New Zealand growers. Resistance to demethylation inhibitor fungicides is widespread so, there is a demand for new-generation bio-fungicides that can provide durable control alternatives in both conventional and organic systems. A wide range of milk products, plant and animal fats/oils, and natural plant elicitors were tested for their ability to control PM on squash and zucchini plants in a series of four glasshouse trials. The most promising product tested was anhydrous milk fat (AMF), in formulation with an emulsifier (Alanate 191™ or Panodan® AL10), an antioxidant (Grindox 122™) and/or other products (Synertrol Horti oil). These treatments were as effective as commercial fungicides in controlling PM, but there were significant issues with plant health. Future work will focus on reducing concentrations of the active ingredient to produce an effective formulation that is not detrimental to plant health. Soybean oil, coconut fat and olive oil formulations with Panodan® AL10 and Grindox 122™ also gave effective PM control with minimal effect on plant health.

scholarly journals Effect of White Champa Leaf Extract (Plumeria acuminata) on White Fly Eclosion (Aleurolobus barodensis Maskell, Hemiptera; Aleyrodidae)

2021 ◽  
Vol 1 (2) ◽  
pp. 89-94
Author(s):  
Vivin Diana Putri ◽  
Etik M Achadian
Keyword(s):  
Nitrogen Fertilizer ◽  
Leaf Extract ◽  
Control Methods ◽  
Extract Concentration ◽  
Environmental Friendly ◽  
Randomized Design ◽  
Completely Randomized Design

The white fly explosion might be occurred on the flooded fields and lack of nitrogen fertilizer. Some control methods have to be conducted to prevent further losses. The use of biopesticide was known to be easier, cheaper and environmental friendly control methods. Therefore the aim of this experiment was determining the effect of white champa leaf extract (Plumeria acuminata) as a biopesticide on sugarcane white fly eclosion (Aleurolobus barodensis). Experiment was conducted in the laboratory, using a completely randomized design with 6 treatments of P. acuminata leaf extract concentrations, that were 0% (control), 10%, 20%, 30%, 40% and 50%, and was replicated 4 times. The results showed that P. acuminata leaf extract could be used to control sugarcane white fly. The effective leaf extract concentration was 40%. The results also proved that P. acuminata leaf extract killed the white fly pupae instead of delaying their eclosion.

scholarly journals Modelling in vitro mycelial growth, sporulation and spore germination of Pseudocercospora musae under different illuminance levels

2019 ◽  
Author(s):  
Djalma M. Santana-Filho ◽  
Milene C. da Silva ◽  
Zilton J. M. Cordeiro ◽  
Hermínio S. Rocha ◽  
Francisco F. Laranjeira
Keyword(s):  
Life Cycle ◽  
Mycelial Growth ◽  
Control Methods ◽  
Exponential Behavior ◽  
Environmental Friendly ◽  
Glass Containers ◽  
Small Glass ◽  
The World ◽  
Petri Plate

ABSTRACTBanana is one of the most produced fruits in the world. Many diseases infect the culture and yellow sigatoka is one of the most important. Light may interfere in the pre-penetration parameters of the fungus. The aim of this study was to evaluate the action of light on aspects of the life cycle of the causal agent. The action of light was tested in vitro on the mycelial growth, sporulation and germination of the fungus. For the mycelial growth 10 colonies were transferred to each Petri plate, by evaluating the green weight of a plate at each moment, in mg, at zero, 15, 21, 28, 35 and 42 days of cultivation according to different illuminance levels. Under the same conditions, the sporulation was also quantified at 5, 7, 11, 13 and 14 days. For germination, equal volumes of a spore suspension were placed in small glass containers, which then were set in mini-shades (different illuminances). Every 1h, lacto-phenol was added to a glass from each environment paralyzing the growth, at the same time, illuminance measurements were made with a light meter. The data obtained from sporulation (linear relation) and germination (positive exponential behavior) were significant for the illuminance levels tested.Significance and Impact of the StudyYellow Sigatoka disease, caused by Pseudocercospora musae, is still one of the most importante banana diseases in Brazil. Its control demands the use of fungicides. New environmental-friendly control methods should be developed. Therefore, the behaviour of both fungus and plant-fungus interaction should be known. We modelled the in vitro behaviour of P. musae in function of light intensity. Our results can help to develop shading strategies to control yellow Sigatoka.

Present status of radio astrometry with baselines ≤ 35 km

1978 ◽  
Vol 48 ◽  
pp. 175-178 ◽  
Author(s):  
K. J. Johnston
Keyword(s):  
Present Status ◽  
Future Work

A summary of results for radio astrometry with baselines ≤ 35 km and priorities for future work are given.

A Phonomotor Approach to Apraxia of Speech Treatment

2020 ◽  
Vol 29 (4) ◽  
pp. 2109-2130
Author(s):  
Lauren Bislick
Keyword(s):  
Phase I ◽  
Treatment Effects ◽  
Single Case ◽  
Motor Planning ◽  
The Other ◽  
Multimodal Approach ◽  
Apraxia Of Speech ◽  
Duration Of Treatment ◽  
Treatment Gains ◽  
Future Work

Purpose This study continued Phase I investigation of a modified Phonomotor Treatment (PMT) Program on motor planning in two individuals with apraxia of speech (AOS) and aphasia and, with support from prior work, refined Phase I methodology for treatment intensity and duration, a measure of communicative participation, and the use of effect size benchmarks specific to AOS. Method A single-case experimental design with multiple baselines across behaviors and participants was used to examine acquisition, generalization, and maintenance of treatment effects 8–10 weeks posttreatment. Treatment was distributed 3 days a week, and duration of treatment was specific to each participant (criterion based). Experimental stimuli consisted of target sounds or clusters embedded nonwords and real words, specific to each participants' deficit. Results Findings show improved repetition accuracy for targets in trained nonwords, generalization to targets in untrained nonwords and real words, and maintenance of treatment effects at 10 weeks posttreatment for one participant and more variable outcomes for the other participant. Conclusions Results indicate that a modified version of PMT can promote generalization and maintenance of treatment gains for trained speech targets via a multimodal approach emphasizing repeated exposure and practice. While these results are promising, the frequent co-occurrence of AOS and aphasia warrants a treatment that addresses both motor planning and linguistic deficits. Thus, the application of traditional PMT with participant-specific modifications for AOS embedded into the treatment program may be a more effective approach. Future work will continue to examine and maximize improvements in motor planning, while also treating anomia in aphasia.

Confirmatory Factor Analysis of the Long and Short Forms of the Worry Domains Questionnaire

2009 ◽  
Vol 25 (4) ◽  
pp. 239-243
Author(s):  
Roberto Nuevo ◽  
Andrés Losada ◽  
María Márquez-González ◽  
Cecilia Peñacoba
Keyword(s):  
Factor Analysis ◽  
Confirmatory Factor Analysis ◽  
Factor Structure ◽  
Goodness Of Fit ◽  
Factorial Validity ◽  
Fit Indices ◽  
Short Forms ◽  
Confirmatory Factor ◽  
Positive Correlations ◽  
Future Work

The Worry Domains Questionnaire was proposed as a measure of both pathological and nonpathological worry, and assesses the frequency of worrying about five different domains: relationships, lack of confidence, aimless future, work, and financial. The present study analyzed the factor structure of the long and short forms of the WDQ (WDQ and WDQ-SF, respectively) through confirmatory factor analysis in a sample of 262 students (M age = 21.8; SD = 2.6; 86.3% females). While the goodness-of-fit indices did not provide support for the WDQ, good fit indices were found for the WDQ-SF. Furthermore, no source of misspecification was identified, thus, supporting the factorial validity of the WDQ-SF scale. Significant positive correlations between the WDQ-SF and its subscales with worry (PSWQ), anxiety (STAI-T), and depression (BDI) were found. The internal consistency was good for the total scale and for the subscales. This work provides support for the use of the WDQ-SF, and potential uses for research and clinical purposes are discussed.

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