نتایج جستجو برای: weed infestation indices

تعداد نتایج: 103342  

Journal: :BRAZILIAN JOURNAL OF AGRICULTURE - Revista de Agricultura 2021

Fruits of two cultivars guava, Psidium guajava L., (‘Tailandesa’ and ‘Kumagai’) garlic passion fruit, Passiflora tenuifila Killip were collected to evaluate the infestation co-infestation frugivorous flies associated parasitoids new hosts. Five species Tephritoidea recovered in Tailandesa guavas, three Kumagai guavas fruit. This is first report a fly infesting P. tenuifila. Individualization fr...

2017
G. S. Wheeler

Host range expansion in insect herbivores is often thought to be mediated by several factors, principal among them are secondary plant metabolites. In weed biological control, the host range of a prospective agent is one of the most important considerations in its implementation. Extensive host testing tests seek to determine the behavioral acceptance and nutritional value of different test pla...

Journal: :Journal of economic entomology 2005
Isaac O Oyediran Bruce E Hibbard Thomas L Clark

Three greenhouse experiments were conducted to evaluate western corn rootworm, Diabrotica virgifera virgifera LeConte, beetle emergence from individual pots containing glyphosate-tolerant transgenic corn, Zea mays L., expressing the Cry3Bbl endotoxin from the soil bacterium Bacillus thuringiensis Berliner (MON863), nontransgenic glyphosate-tolerant isoline corn, grassy weeds (giant foxtail, Set...

Journal: :journal of crop protection 2015
luke chinaru nwosu chris olukayode adedire emmanuel oludele ogunwolu

new sources of maize resistance to the maize weevil, sitophilus zeamais infestation are indispensable in successful breeding programs against post harvest grain damage. the study investigated the characters and mechanisms that confer resistance to weevil infestation using twenty elite maize genotypes. detailed morphological and physical studies were conducted on whole-maize grain. the grain hul...

Journal: :Estuarine Coastal and Shelf Science 2021

Weed infestation is a critical management issue for maintaining the natural values of coastal wetlands across world. Widespread use herbicides to control weeds has resulted in environmental issues past and led search more methods such as using saline water. This study investigates options restore flow regimes between freshwater seawater by removing bund which was built grow ponded pasture. The ...

Journal: :Journal of Pesticide Science 2022

The inhibitory effect of propiconazole on strigolactone (SL) production and Striga hermonthica emergence were evaluated using rice plants. A significant reduction in SL levels was detected root exudates after treated with different doses propiconazole. Propiconazole induced second tiller bud outgrowth seedlings. In accordance the results 4-deoxyorobanchol exudates, propiconazole-treated attenua...

2006
A. Rahman F. A. Talukder

Experiments were conducted to study the bioefficacies of different plant/weed derivatives that affect the development of the pulse beetle, Callosobruchus maculates F. (Coleoptera: Bruchidae) fed on black gram, Vigna mungo, seeds. Plant extracts, powder, ash and oil from nishinda (Vitex negundo L.), eucalyptus (Eucalyptus globules Labill.), bankalmi (Ipomoea sepiaria K.), neem (Azadirachta indic...

2017
Fenfang Lin Dongyan Zhang Yanbo Huang Xiu Wang Xinfu Chen

Accurate detection of weeds in farmland can help reduce pesticide use and protect the agricultural environment. To develop intelligent equipment for weed detection, this study used an imaging spectrometer system, which supports micro-scale plant feature analysis by acquiring high-resolution hyper spectral images of corn and a number of weed species in the laboratory. For the analysis, the objec...

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