www.eajbs.eg.net Field comparison between droplet distribution and the bioresidual activity of different insecticides against Spodoptera littoralis (boisd) by using certain ground spraying equipment on cotton platns
Entomology Journal publishes original research papers and reviews from any entomological discipline or from directly allied fields in ecology, behavioral biology,
Three insecticides; Selecron, Trebon and Patron were sprayed using Knapsack motor sprayer Cifarilli (20 L./Fed.) and Economy Micron ULVA (15 L./Fed.) in cotton field infested with the cotton spiny bollworm Earias insulana (Boisd.) larvae during 2014 cotton season at Qaha district, Qalyoubia Governorate. The spectrum of droplets size ranging between 140-169 microns (VMD) with sufficient number ranging from 14-276 droplets/cm². The productivity of motor sprayer Cifarilli was 12 Fed./day. It was the best equipment, but the lowest productivity was 3.04 Fed./day by using Economy Micron ULVA. Results indicated that Trebon and Selecron insecticides were almost behave to be equitoxic effective in controlling larvae of cotton bollworm on cotton plants than the Patron insecticide with Economy Micron ULVA (15 L./Fed.) followed by Knapsack motor Cifarilli sprayer (20L./Fed.). The efficiency of the tested insecticides could be descendingly arranged as follows: Trebon, Selecron and Patron. The corresponding general reduction rates were 91.١٥, 55.99 and 92.51% in case of using Micron ULVA equipment and 91.13, 55.19 and 92.20% in case of using Knapsack motor Cifarilli sprayer, respectively. Data showed that, low volume spraying may be recommended because of reducing the time lost in the process filling the machines of reducing the time lost of the spray solution on the plant leaves and saving the lost spray via run off on the ground.
Field experiments were carried on soybean variety (Giza 111) during two successive seasons 2019 and 2020. Two natural compounds were tested, Humic acid, Chitosan Nano-particles (C.N.Ps) and a common acaricide, Abamectin, of recommended dose rates and one treatment left without spraying as control by using Economy Micron ULVA sprayer (15L./fed.) and Hydraulic sprayer (Matabi) (56 L/Fed.). Data indicated that all tested compounds induced significant negative influenced on Tetranychus urticae adult females' survival. Abamectin and humic acid revealed successful results followed by the C.N.Ps. Results showed that C.N.Ps have lower toxicity on T. urticae but it safer on all movable stages of Amblyseius californicus, Orius insidiosus, and Scolothrips sexmaculatus, the natural enemies associated. It could be recommended that using those compounds with LV spraying equipment with not less than (15 L. /Fed.). A satisfactory spray coverage was obtained on soybean plants. The droplets spectrum ranging from 150-170 m (VMD). A sufficient number ranging from 18-199 N/cm². The data showed that the Economy Micron ULVA sprayer was the best equipment to control. Tetranychus urticae on soybean according to the homogeneity of the droplet spectrum. The rate of performance of Hand-held Hydraulic sprayer (Matabi) (56 L. /Fed.), Economy Micron ULVA (15 L. /Fed.) were 3.55 Fed. /day, 3.30 Fed. /day, respectively. Data also revealed that lost spray-on ground for Ulva sprayer was lower than Matabi sprayer with 35%.
The journal of Toxicology and pest control is one of the series issued twice by the Egyptian Academic Journal of Biological Sciences, and is devoted to publication of original papers related to the interaction between insects and their environment. The goal of the journal is to advance the scientific understanding of mechanisms of toxicity. Emphasis will be placed on toxic effects observed at relevant exposures, which have direct impact on safety evaluation and risk assessment. The journal therefore welcomes papers on biology ranging from molecular and cell biology, biochemistry and physiology to ecology and environment, also systematics, microbiology, toxicology, hydrobiology, radiobiology and biotechnology. www.eajbs.eg.net
Field experiments were carried out in an area of about 2 feddan planted with bean plants variety (Sakha 2) Vicia faba (L).during season 2014 in 12 th December at Sakha ,Kafr Elsheikh Governorate. The selected area was split into 7 plots including control plot. Primicarb was sprayed with the rate of recommended and 3/4 recomended dose rate and one treatment left without spraying as control by using Hydraulic Knapsack sprayer (Solo) (22 L./Fed.), Economy Micron ULVA sprayer (15 L/Fed.) and Conventional motor sprayer (Wisconson) (400 L/Fed.) Data indicated that, all tested doses revealed significant negative influenced on Aphis fabae survival. The most effective is total recommended dose followed by 3/4 recommended dose. It could be recommended to use these compound with LV spraying equipment with not less than (15L/Fed.).The data showed that Hydraulic Knapsack sprayer (Solo) was the pest equipment to control Aphis fabae on bean plants. The rate of performance of Solo sprayer was 10 Fed./day. It was the best equipment, but the lowest rate of performance was Wisconson motor sprayer since it could spray only 2.5 Fed./day.
The journal of Toxicology and pest control is one of the series issued twice by the Egyptian Academic Journal of Biological Sciences, and is devoted to publication of original papers related to the interaction between insects and their environment. The goal of the journal is to advance the scientific understanding of mechanisms of toxicity. Emphasis will be placed on toxic effects observed at relevant exposures, which have direct impact on safety evaluation and risk assessment. The journal therefore welcomes papers on biology ranging from molecular and cell biology, biochemistry and physiology to ecology and environment, also systematics, microbiology, toxicology, hydrobiology, radiobiology and biotechnology. www.eajbs.eg.net Provided for non-commercial research and education use. Not for reproduction, distribution or commercial use.
The journal of Toxicology and pest control is one of the series issued twice by the Egyptian Academic Journal of Biological Sciences, and is devoted to publication of original papers related to the interaction between insects and their environment. The goal of the journal is to advance the scientific understanding of mechanisms of toxicity. Emphasis will be placed on toxic effects observed at relevant exposures, which have direct impact on safety evaluation and risk assessment. The journal therefore welcomes papers on biology ranging from molecular and cell biology, biochemistry and physiology to ecology and environment, also systematics, microbiology, toxicology, hydrobiology, radiobiology and biotechnology. www.eajbs.eg.net
Provided for non-commercial research and education use.Not for reproduction, distribution or commercial use.
ABSTRACT Article HistoryField experiments were carried out of about 14 karats planted with (Giza 86) cotton variety during seasons 2018 and 2019 on 15 th July and 1 st , 15 th August in a field located at Qaha Research Station, Plant Protection Research Institute, Qalyoubia governorate. The selected area was split into 6 plots and the control plot. Two alternative products include Chlorpyriphos (OP's), and Chlorflurzoran (IGR's) were sprayed by using Rotary Matabi sprayer (18 L./fed.) on cotton field highly infested with cotton Spiny bollworm, Earias insulana larvae. All tested Insecticides revealed a significant negative influence on Earias insulana larvae. The most effective on reduction percentages of bolls infestation was Chlorpyriphos with NU-FILM -17 SPREADER ® 1% ,5% followed by Chlorflurzoran with NU-FILM -17 SPREADER ® 1% ,5% with Rotary Matabi sprayer (18 L./fed.). It could be recommended to use these Insecticides with Low Volume spraying equipment with not less than (18L/Fed.). A satisfactory coverage was obtained on cotton plants. The spectrum of droplets ranging between 120-170 m (VMD). With sufficient number ranging from 13-265 N/cm². The rate of performance of Rotary Matabi sprayer (18 L./fed.). was 2.4 Fed./day. The results indicated that there was no significant difference between using NU-FILM -17 SPREADER ® 1% or 5% in reduction percentages of bolls infestation. Using both Chlorpyriphos and Chlorflurzoran with NU-FILM -17 SPREADER ® 1% could be recommended in controlling Spiny bollworm, Earias insulana larvae because it increased droplets numbers 54%, decreased droplet sizes 17 % and minimized lost spray on ground 44% which made good spray quality, homogeneity and spray coverage. Also, Low Volume spraying reducing the time lost in the process filling the machines with the spray solution and saving the lost spray on the ground certainly in small plantation around villages.
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