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... Bacterial wilt, caused by Erwinia tracheiphila (Smith), can result in serious yield loss of cantaloupe in the Midwest United States. Although neonicotinoid insecticides are an effective means of managing the cucumber beetles that vector E. tracheiphila, this management regime may cause toxicity to pollinators. An alternative method of managing this disease is to use products that induce resistance ...
... The efficacy of various biological control agents and their application methods was tested against the root-knot nematodes Meloidogyne javanica and Meloidogyne incognita in large, in-ground tomato production areas. Treatments included infective juveniles (IJs) of the entomopathogenic nematode Steinernema feltiae, nematode-infected insect cadavers and cell-free supernatant of the nematode's bacteri ...
crop production; disease severity; field experimentation; growers; growing season; growth regulators; leaf blotch; leaves; lodging; nitrogen; phytotoxicity; plant height; production technology; soft red winter wheat; tebuconazole; Delaware
Abstract:
... Soft red winter wheat (SRWW) is an important crop in the mid-Atlantic. The use of growth regulators such as trinexapac-ethyl (TE) applied with nitrogen applications at pseudo-stem erection [Zadocks (ZGS) 30] has gained more interest in the region as a means to reduce lodging and potentially improve yields. Fungicide use has also increased, with many growers applying fungicides at ZGS 30 and again ...
Pennisetum glaucum; corn; direct seeding; field crops; financial economics; fungi; insects; mung beans; on-farm research; peanuts; plant pests; research projects; rice; soil types; soybeans; weed control; wheat; India
Abstract:
... Weeds are notorious yield reducers that are, in many situations, economically more harmful than insects, fungi or other crop pests. Assessment of crop yield and economic losses due to weeds in agriculture is an important aspect of study which helps in devising appropriate management strategies against weeds. A study was conducted to estimate the yield and economic losses due to weeds using the dat ...
... Prairie voles (Microtus ochrogaster Wagner) cause extensive damage in agricultural, suburban, and urban environments. Control of these animals has historically relied on the use of anticoagulant rodenticides and zinc phosphide. However, shyness to zinc phosphide baits has reduced its efficacy. The aim of this study was to evaluate the factors involved in zinc phosphide bait shyness through prefere ...
Brassica napus; Sclerotinia sclerotiorum; boscalid; carbendazim; culture media; demethylation; hyphae; median effective concentration; membrane permeability; microsatellite repeats; microscopy; mycelium; normal distribution; pathogens; propiconazole; sclerotia; stem rot; tebuconazole; China
Abstract:
... Sclerotinia sclerotiorum, the causal agent of Sclerotinia stem rot (SSR) of oilseed rape, is a broad-host-range pathogen. The demethylation inhibitor (DMI) fungicide propiconazole was officially approved in China in 2014 for control of this pathogen. In this study, baseline sensitivity of S. sclerotiorum to propiconazole was established. The distribution of the 50% effective concentration (EC50) v ...
Sclerotinia sclerotiorum; agar; boscalid; carbendazim; correlation; enzyme inhibitors; frequency distribution; growth retardation; hyphae; median effective concentration; membrane permeability; mitochondria; monitoring; mycelium; prochloraz; sclerotia; succinate dehydrogenase (quinone); toxicity; transmission electron microscopy
Abstract:
... Baseline sensitivity of Sclerotinia sclerotiorum to the succinate dehydrogenase inhibitor (SDHI) fungicide boscalid was established by determining the effective concentration causing mycelial growth inhibition by 50% (EC50) values. The mean EC50 values of 76 isolates collected in 2008 and 77 isolates collected in 2014 were 0.0383 and 0.0395 μg/mL, respectively. There was no significant difference ...
Benjamin A. Ayil-Gutiérrez; Lorenzo F. Sánchez-Teyer; Felipe Vazquez-Flota; Miriam Monforte-González; Yahaira Tamayo-Ordóñez; Maria C. Tamayo-Ordóñez; Gildardo Rivera
... Insects of the genus Spodoptera Guenée (Noctuidae) are responsible for great economic losses in important crop plants such as maize and rice, among others. Efforts have been made to control this pest using organophosphate, carbamate, pyrethroid, and benzoylurea pesticides to which these insects have developed resistance. For this reason, it is urgent to find new options to control these insects. C ...
... Many smallholder farmers in sub-Saharan Africa rely on synthetic pesticides for protecting stored-grain. Recommendations on use of these grain protectants are typically based on “blanket” application rates which are fixed rates that are not varied according to grain type, pest range or agro-climatic regions. There are numerous anecdotal reports of storage pesticide failure or reduced efficacy from ...
... The fruit fly, Carpomyia vesuviana Costa (Tephritidae: Diptera) is an important pest of ber (Ziziphus mauritiana L), leading to significant losses in yield in the hot arid agro-climate of India. Variation in resource input (antixenotics and allelochemicals) to plants trigger bottom-up effects on ber-fruit fly interactions. However, variation in plant extrinsic and intrinsic traits in response to r ...
... Tan spot caused by the necrotroph pathogen Pyrenophora tritici-repentis (Died.) Drechs. [anamorph Drechslera tritici-repentis) (Died.) Shoem] causes reductions in yield and grain quality of wheat (Triticum aestivum L.) by affecting the photosynthetically active area of the crop which could affect grain protein content (GPC) and breadmaking parameters. Nitrogen (N) fertilization is required for ach ...
... Interest in the use of plant extracts to replace chemicals as insecticides is growing. In the present study, the chemical composition and insecticidal activity of Robinia pseudoacacia L. seed extract were investigated. The insecticidal extract of R. pseudoacacia seeds was analyzed by GC×GC-TOFMS. A total of 51 compounds were identified and the major constituents found in the seed extract were 9,12 ...
... The efficacy of combining biosolarization and grafting as integrated control of Meloidogyne incognita was evaluated in greenhouse pepper crops in south-east Spain. Field trials were conducted over a three consecutive year period in four greenhouses with soils naturally infested with M. incognita populations, virulent (two greenhouses) or avirulent (two greenhouses) to the Me3 gene. The soils were ...
C.A. Baroffio; L. Sigsgaard; E.J. Ahrenfeldt; A.-K. Borg-Karlson; S.A. Bruun; J.V. Cross; M.T. Fountain; D. Hall; R. Mozuraitis; B. Ralle; N. Trandem; A. Wibe
Anthonomus rubi; Byturus; Lygus rugulipennis; aggregation pheromones; attractants; bait traps; chemical control; females; flowers; horticultural crops; horticulture; host plants; insect pests; monitoring; phenylacetaldehyde; raspberries; sex pheromones; strawberries; trapping; Europe
Abstract:
... Most horticultural crops are attacked by more than one insect pest. As broad-spectrum chemical control options are becoming increasingly restricted, there is a need to develop novel control methods. Semiochemical attractants are available for three important horticultural pests, strawberry blossom weevil, Anthonomus rubi Herbst (Coleoptera: Curculionidae), European tarnished plant bug, Lygus rugul ...
... A study was conducted in a cropping system mode for rice–wheat (RW) and rice–maize (RM) with crop residue management [without residue (R-) and with residue (R+)] under different tillage and crop establishment (T&CE) techniques. The T&CE techniques comprised conventional tillage (CT) puddled transplanted rice followed by (fb) CT wheat/maize (CTTPR-CT), unpuddled transplanted rice fb zero-tillage (Z ...
... In a previous study, straw mulching (SM) significantly affected the soil microbial environment, and weed composition and biomass. We hypothesized that corn SM may effectively control Parthenium hysterophorus. The growth traits, and the physico-chemical and microbiological properties of rhizosphere soils around P. hysterophorus were analyzed in 2014 and 2015. Compared to the control, plant emergenc ...
Ceratitis capitata; Citrus; adults; bioassays; cages; cyantraniliprole; field experimentation; malathion; mortality; natural enemies; orchards; protein hydrolysates; spinosad; South Africa
Abstract:
... Bait applications are frequently utilised to control the Mediterranean fruit fly, Ceratitis capitata (Wiedemann), because they can be applied rapidly and have a limited impact on natural enemies. However, the preferred toxicant, malathion, sometimes results in unacceptable residues and resistance has been found to it and the most common alternative, spinosad. Cyantraniliprole 100 g/L SE was theref ...
... Phytoplasmas are wall-less plant pathogenic bacteria that are transmitted through sap-feeding insects. Phytoplasma colonization in the host plant has been shown to depend on the affecting phytoplasma group and the properties of the host plant. Such studies on phytoplasma colonization are scanty in the agriculturally important annuals that are suffering severe yield losses worldwide. In this regard ...
... Cucumis melo L. var. agrestis Naud. (field muskmelon), a troublesome weed affecting corn, soybean and peanut fields, is difficult to control and drastically reduces crop yields. Farmers have reported that nicosulfuron, imazapic, fomesafen, and bentazon, which are common herbicides used in corn, soybean and peanut fields, do not control field muskmelon effectively. This lack of control might be due ...
anthocyanins; harvesting; blight; pomegranates; biotic stress; total soluble solids; Punica granatum; fruit cracking; fruiting; linoleate 13S-lipoxygenase; sunburn; storage quality; color; abiotic stress; antioxidant activity; fruit juices; enzyme activity
Abstract:
... Pomegranate (Punica granatum L.) can suffer from sunburn and fruit cracking, and biotic stresses such as bacterial blight (Xanthomonas axonopodis pv. Punicae) (Hingorani and Singh) Dye and fruit borer (Deuodorix isocrates Fabr.). Because particle film technology has emerged as a promising technology, many kaolin-based films such as Surround WP®, Parasol® and Anti-stress-500®, have been developed. ...