Consulta: subjectFacets:"Crop loss"
Registros recuperados: 3
Data/hora: 17/06/2024 16:02:23

Does It Matter Who Scouts?
Provedor de dados: 31
Autores: Lichtenberg,   Erik; Berlind,   Ayesha Velderman.
Scouting is the most widely used integrated pest management technique adopted by U.S. growers. This study applies an implicit demand formulation of the Lichtenberg-Zilberman damage abatement model to data from a survey of Maryland field crop growers to examine differences in pesticide demand between growers using scouts trained and supervised by extension and those using chemical dealer employees or scouting themselves. The results give partial support to those skeptical of the quality of scouting by farmers themselves and by consultants working for chemical dealers. Soybean growers using extension-trained scouts had significantly lower pesticide demand than those using chemical dealer employees or scouting themselves. However, no significant differences...
Tipo: Journal Article
Palavras-chave: Crop loss; Damage abatement; Extension; Integrated pest management; Pesticide demand; Pesticides; Scouting; Crop Production/Industries.
Ano: 2005
URL: http://purl.umn.edu/31214

การประเมินความเสียหายของข้าวโพดหวานจากแมลงศัตรูพืชประเภทผีเสื้อ
Provedor de dados: 106
Autores: Sangkhae Nawanich; Surachate Jamornmarn; Anna Saimaneerat; Supranee Ngamprasitthi; Piyarat Jangpon.
Palavras-chave: Corn; Maize; Crop loss; Sweet corn; Lepidopterous insect pest; ข้าวโพด; ข้าวโพดหวาน; แมลงศัตรู; ผีเสื้อ; ระยะการพัฒนา; การป้องกันกำจัดแมลงศัตรูพืช; ความเสียหาย.
Ano: 2004
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4226

Effect of population densities of Heterodera glycines race 3 on leaf area, photosynthesis and yield of soybean
Provedor de dados: 102
Autores: ASMUS,GUILHERME L.; FERRAZ,LUIZ CARLOS C. B.
The effect of Heterodera glycines on photosynthesis, leaf area and yield of soybean (Glycine max) was studied in two experiments carried out under greenhouse condition. Soybean seeds were sown in 1.5 l (Experiment 1) or 5.0 l (Experiment 2) clay pots filled with a mixture of field soil + sand (1:1) sterilized with methyl bromide. Eight days after sowing, seedlings were thinned to one per pot, and one day later inoculated with 0; 1.200; 3.600; 10.800; 32.400 or 97.200 J2 juveniles of H. glycines. Experiment 1 was carried out during the first 45 days of the inoculation while Experiment 2 was conducted during the whole cycle of the crop. Measurements of photosynthetic rate, stomatic conductance, chlorophyll fluorescence, leaf color, leaf area, and chlorophyll...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crop loss; Glycine max; Heterodera glycines; Soybean cyst nematode.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582002000300006