scholarly journals Biorational and conventional insecticides efficacy to control thrips (Frankliniella occidentalis Perg.) on strawberries (Fragaria x ananassa Duch.) at Morelos state, Mexico

2021 ◽  
Author(s):  
Abraham Monteon-Ojeda ◽  
Agustín Damián-Nava ◽  
Elías Hernández-Castro ◽  
Blas Cruz-Lagunas ◽  
Teolincacihuatl Romero-Rosales ◽  
...  
Keyword(s):  
Frankliniella Occidentalis ◽  
Neem Extract ◽  
Camino Real ◽  
Phytotoxic Effects ◽  
Lambda Cyhalothrin ◽  
Randomized Experimental Design ◽  
Open Ground ◽  
Management Alternative ◽  
Oil Extract ◽  
Management Alternatives

Objective: To evaluate the insecticidal effectiveness of biorational and conventional products as alternatives to control thrips and their phytotoxic effects in strawberry cultivation. Design / methodology / approach: The research was carried out in strawberry cv. Camino Real during its flowering stage - fruiting established in open ground; A completely randomized experimental design with seven treatments and four replications was used. The treatments evaluated were: T1: neem oil extract, T2: paraffin oil, T3: garlic extract + hot chili pepper + cinnamon, T4: spinosad, T5: imidacloprid + lambda cyhalothrin, T6: bifenthrin, and T7: control. Applications were made weekly and the mortality evaluation was carried out by counting the number of live thrips per flower. With the obtained data, an analysis of variances and a mean comparison test (Tukey, p ≤ 0.05) were performed. Results: Significant differences between treatments could be identified (p ≤ 0.05); imidacloprid + lambda cyhalothrin and bifenthrin caused the highest mortality of thrips with 92 and 93 % efficacy, respectively. Spinosad obtained good results, ranking as the second-best option with 90 % control efficiencies; neem extract stood out as an excellent biorational pest management alternative with 77 % control efficacy in its last evaluation. No phytotoxic effects were observed from any of the treatments on the crop. Limitations on study / implications: It is important to continue the study in the laboratory to obtain the LD50 and LD90 of the management alternatives, as well as an MRL analysis of the molecules used. Findings / conclusions: The proposed protocol evidenced the efficacy of biorational and ecological thrips control treatments in intensive horticultural systems.

scholarly journals STATUS STOK SUMBER DAYA IKAN TAHUN 2016 DI WILAYAH PENGELOLAAN PERIKANAN NEGARA REPUBLIK INDONESIA (WPP NRI) DAN ALTERNATIF PENGELOLAANNYA

2018 ◽  
Vol 10 (2) ◽  
pp. 107 ◽  
Author(s):  
Ali Suman ◽  
Fayakun Satria ◽  
Budi Nugraha ◽  
Asep Priatna ◽  
Khairul Amri ◽  
...  
Keyword(s):  
Spiny Lobster ◽  
Fishing Effort ◽  
Andaman Sea ◽  
Group Management ◽  
Stock Status ◽  
Fish Resources ◽  
Yellow Color ◽  
Arafura Sea ◽  
Management Alternative ◽  
Management Alternatives

Status stok merupakan salah satu dasar utama dalam merumuskan pengelolaan sumber daya ikan yang berkelanjutan di WPP NRI. Tulisan ini bertujuan untuk mengevaluasi status stok sumber daya ikan di WPP NRI dan alternatf pengelolaannya. Penelitian dilaksanakan pada tahun 2015-2016 dengan menggunakan metode holistik dan analitik. Hasil analisis menunjukkan potensi sumber daya ikan di perairan Indonesia (WPP NRI) adalah sebesar 12,54 juta ton per tahun dengan potensi tertinggi sebagai ikan pelagis kecil sebesar 4,88 juta ton/tahun (39 %) dan yang terendah adalah lobster sebesar 11.159 ton (1 %). Berdasarkan WPP NRI, potensi sumber daya ikan tertinggi sebesar 2,64 juta ton (21 %) terdapat di WPP NRI 718 (Laut Aru dan Laut Arafura) dan yang terendah sebesar 425.444 ton di perairan WPP NRI 571 (Selat Malaka dan Laut Andaman). Tingkat pemanfaatan ikan di WPP NRI secara keseluruhan didominasi status fully-exploited (indikator warna kuning) sekitar 44 %, diikuti status overfishing (indikator warna merah) sekitar 38% serta status moderat sekitar 18 %. Agar sumber daya ikan di perairan WPP NRI berada dalam tahapan yang berkelanjutan, maka harus dilakukan penataan upaya penangkapan dengan mengurangi jumlah upaya penangkapan sesuai acuan upaya optimal (f.opt) pada WPP yang mengalami kondisi overfishing dan meningkatkan upaya di WPP yang tingkat pemanfaatannya masih moderat dan fully-exploited. Stock status of fish resources were a basis advices to define an apropriate fisheries management towards sustainable fish resource. The purpose of this study was to evaluate the stock status of fish resources and its management alternative in FMAs. The study was conducted from 2015 to 2016 using a holistic and analytic method. Estimation of all fish potency in Indonesia marine waters was 12.54 million tons/year which the highest potency was small pelagic fish group about 4.88 million tons/year (39 %) and the lowest potency was spiny lobster group about 11,159 tons/year (1 %). Based on the FMAs, the highest potency was about 2.64 million tons/year (21 %) in FMA 718 (Aru sea and Arafura sea) and the lowest potency was about 425,444 tons/year (3 %) found in FMA 571 (Malacca strait and Andaman sea). Most of fish resources was in the condition of fully-exploited (44 % yellow color) followed by overfishing (34 % red color) and moderate (21 % green color). Fish groups which included in the highest overfishing by FMAs were squid group. Management alternatives in those prespective are suggested to decrease the fishing effort at the level of f.opt (fishing optimum) by fish groups on the FMAs experiencing overfishing accordingly and to increase an effort at the level of f opt for fish groups on the FMAs in the fully exploited and moderate condition 

scholarly journals Impact of neem-nanoemulsion and neem petroleum ether extract on some biological parameters of the internal parasitoid, Meteorus gyrator (Thub.) (Hymenoptera: Braconidae)

2020 ◽  
Vol 44 (1) ◽  
Author(s):  
Amany Ramadan Ebeid
Keyword(s):  
Insect Pests ◽  
Petroleum Ether Extract ◽  
Harmful Effect ◽  
Adult Emergence ◽  
Biological Parameters ◽  
Neem Oil ◽  
Neem Tree ◽  
Neem Extract ◽  
Oil Extract ◽  
High Concentrations

Abstract Background The neem tree, Azadirachta indica, is very promising for the control of many insect pests, where it acting as feeding deterrents, oviposition obstruction and as a growth regulator. Results In this study, both neem extract and neem nanoemulsion significantly decreased the adult emergence of Meteorus gyrator. It was found that all concentrations of neem nanoemulsion especially high concentrations (800, 400, and 200 ppm) have adversely affected some biological parameters of this parasitoid. Also, they have a harmful effect as reducing fecundity, oviposition, and shortened the longevity of M. gyrator. Conclusion It has been proved that neem nanoemulsion is more harmful than neem oil extract for the hymenopteran parasitoid M. gyrator.

scholarly journals Defoliation of strawberry mother plants for the production of runner tips

2014 ◽  
Vol 49 (7) ◽  
pp. 515-520
Author(s):  
Miriane Dal Picio ◽  
Jerônimo Luiz Andriolo ◽  
Francieli Lima Cardoso ◽  
Maíne Alessandra Lerner ◽  
Jéssica Maronez de Souza
Keyword(s):  
Experimental Design ◽  
Dry Matter ◽  
Crown Diameter ◽  
Camino Real ◽  
Split Plot ◽  
Randomized Experimental Design ◽  
Mother Plants

The objective of this work was to determine the sink-source relationships and their effects on the number and growth of runner tips of 'Camino Real' strawberry stock plants. Three types of sources were evaluated: one defoliation at 96 days after planting (DAP), two defoliations at 50 and 96 DAP, and mother plants without defoliation. Four types of sink were accessed: runner tips collected weekly and monthly, four stolons with rooted runner tips in pots, and four freely-grown stolons. A completely randomized experimental design was used in a split-plot arrangement, with four replicates. The source types were placed in the plots, and sink types in the subplots. The number of runner tips, the crown diameter, and the dry matter mass were determined. Number and growth of tips were higher on plants without defoliation, and decreased 44.7% on twice-defoliated mother plants. The two-defoliation management did not reduce runner tip dry matter mass only on plants with rooted stolons, which produced runner tips 50% heavier. Defoliation of mother plants bearing rooting stolons can be used to reduce their growth, without reducing the emission and growth of runner tips.

scholarly journals Alternative Methods to Control Western Flower Thrips (Frankliniella occidentalis) in Greenhouse Crops

HortScience ◽  
1997 ◽  
Vol 32 (3) ◽  
pp. 435D-435
Author(s):  
Douglas A. Hopper ◽  
Julie A. McIntyre
Keyword(s):  
Diatomaceous Earth ◽  
Frankliniella Occidentalis ◽  
Population Control ◽  
Western Flower Thrips ◽  
Alternative Methods ◽  
Parasitic Nematodes ◽  
Neem Extract ◽  
Greenhouse Crops ◽  
Chemical Treatments ◽  
Flower Thrips

Research focused on alternative methods to control Western flower thrips (Frankliniella occidentalis Pergande), encompassing chemicals from varying classes, parasitic nematodes, microbial insecticides, and physical/mechanical deterrents. Chemical spray applications were applied weekly for 4 to 6 weeks. Experiment 1 made comparisons between fenoxycarb (Precision), bifenthrin (Talstar), and entomopathogenic nematodes (Biosafe). Experiment 2 compared abamectin (Avid), spinosyn A and D (Spinosad), azadirachtin (neem extract: Margosan-O), and diatomaceous earth (a physical control aimed at deterring pupation). Experiment 3 compared Spinosad, fipronil, and two microbial insecticides (Naturalis-O and Mycotrol). The number of thrips counted in flowers after treatments had been applied indicated that the strict chemical treatments (Avid, Spinosad, fipronil) provided quick knockdown and overall longer-term population control. Microbial insecticides, diatomaceous earth, and nematodes maintained populations at a lower level than the control, but were not as effective as strict chemical controls. Margosan-O, Precision, and Talstar controlled populations at medium levels. For periods when populations may cycle upward, more potent chemicals could be used (Spinosad, fipronil, and Avid) while still avoiding problems associated with more toxic chemicals.

Law-Enforcement Officer Preferences for PTSD Treatment and Crisis-Management Alternatives

2008 ◽  
Author(s):  
Glenn E. Meyer ◽  
Carolyn B. Becker ◽  
Melissa M. Graham ◽  
John S. Price ◽  
Ashley Arsena ◽  
...  
Keyword(s):  
Law Enforcement ◽  
Crisis Management ◽  
Ptsd Treatment ◽  
Enforcement Officer ◽  
Law Enforcement Officer ◽  
Management Alternatives

CASSETTE TECHNOLOGY FOR OPEN GROUND CUCUMBER SEED-LINGS GROWING WITH APPLICATION OF HYDROGEL

2018 ◽  
Vol 9 ◽  
pp. 55-60
Author(s):  
N.A. Engalycheva ◽  
◽  
J.I. Engalychev ◽  
K.L. Alekseeva ◽  
M.I. Ivanova ◽  
...  
Keyword(s):  
Cucumber Seed ◽  
Open Ground

Орошение томата F1 Донской в открытом грунте Московской области

2019 ◽  
Author(s):  
D.I. Engalychev ◽  
N.A. Engalycheva ◽  
A.M. Menshikh
Keyword(s):  
Experimental Data ◽  
Agricultural Technology ◽  
Tomato Fruits ◽  
River Floodplain ◽  
Yield And Quality ◽  
Open Ground ◽  
Alluvial Meadow ◽  
Standard Production ◽  
Moscow River

Представлены экспериментальные данные о влиянии капельного орошения на урожайность и качество плодов томата при выращивании культуры в открытом грунте Московской области. На плодородных аллювиальных луговых почвах Москворецкой поймы при соблюдении агротехники без орошения в среднем за три года исследований в полевых условиях получена урожайность томата F1 Донской 31,9 т/га, с орошением 48,5 т/га, в т.ч. стандартной продукции 42,6 т/га.The article presents experimental data on the effect of drip irrigation on the yield and quality of tomato fruits when growing crops in open ground of the Moscow Region. On fertile alluvial meadow soils of the Moscow river floodplain, with the observance of agricultural technology without irrigation, the field yield of tomato hybrid F1 Donskoi on average for three years of research was 31.9 t/ha, with irrigation 48.5 t/ha, incl. standard production 42.6 t/ha.

Гибриды перца сладкого для товарного производства

2018 ◽  
Author(s):  
V.V. Ognev ◽  
T.V. Chernova ◽  
A.N. Kostenko ◽  
N.A. Poltavskiy
Keyword(s):  
Sweet Pepper ◽  
Breeding Work ◽  
Open Ground

Представлен обзор селекционной работы по культуре перца сладкого в Агрохолдинге «Поиск». Выделены актуальные направления исследований в селекции перца на гетерозис. Представлены лучшие гибриды для различных направлений использования в товарном производстве.Main directions of breeding and results of breeding work by Poisk Agro Holding in sweet pepper are presented. Hybrids identified for intensive growing in open ground and springhouse, for various uses.

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