搜索结果: 1-15 共查到“农学 insects”相关记录16条 . 查询时间(0.059 秒)
History,presence and perspective of using plant extracts as commercial botanical insecticides and farm products for protection against insects–a review
medicinal plants essential oils Azadirachta Pyrethrum mechanism of action
2016/9/2
Botanical insecticides keep attracting more attention from environmental and small farmers worldwide as they are considered as a suitable alternative to synthetic insecticides. The use of secondary me...
Key scale insects (Hemiptera: Coccoidea) of high economic importance in a Mediterranean area: host plants, bio-ecological characteristics, natural enemies and pest management strategies – a review
Planococcus ficus Planococcus citri Saissetia oleae Parlatoria ziziphi grapevine citrus olive Integrated Pest Management Tunisia
2016/4/6
Key scale insects that have long been considered as having high economic importance in Tunisia and for which several research studies and pest management programs have been undertaken include the meal...
Consequences of Fragmentation of Tropical Moist Forest for Birds and Their Role in Predation of Herbivorous Insects
avian diversity caterpillar predation fragmentation herbivory
2015/11/13
The consequences of habitat alteration on the role of understory insectivorous birds as predators of herbivorous insects in tropical forests are poorly understood. To examine whether fragmentation may...
The fauna of cambioxylophagous insects on Scots pine trees declined after spells of drought in 2003
cambioxylophagous insects Scots pine drought spell
2015/3/6
The paper deals with cambioxylophagous insects on Scots pine (Pinus sylvestris L.) trees. Research was conducted in forest stands growing on steep slopes on the left bank of the Otava River about 1 km...
Water Stress Strengthens Mutualism Among Ants, Trees, and Scale Insects
Ants, Trees Scale Insects
2013/11/13
Abiotic environmental variables strongly affect the outcomes of species interactions. For example, mutualistic interactions
between species are often stronger when resources are limited. The effect m...
Two single mutations commonly cause qualitative change of nonspecific carboxylesterases in insects
Carboxylesterases Mutations Organophosphate insecticides Enzymatic kinetics
2011/9/20
Carboxylesterases provide key mechanisms of resistance to insecticides, particularly organophosphates (OPs), in insects. One resistance mechanism is a qualitative change in the properties of a carboxy...
Evaluation of wheat ear insects in large scale field in central Germany
Winter Wheat Thrips Wheat Midges Population Densities
2010/9/2
Wheat ear insects in large scale winter wheat field in Salzmünde (SaxsonyAnhalt) central Germany were evaluated. The present study aimed at studying the abundance of wheat blossom midges WBM, Sitodopl...
Genetic Study on Resistance to the Common Cutworm and Other Leaf-eating Insects in Soybean
backcrossing crop pests DNA markers genome information QTL
2010/4/1
The common cutworm (Spodoptera litura Fabricius) is a major pest of soybean [Glycine max (L.)
Merr.] in southwestern Japan, and other lepidopteran insects damage soybean crops in the United States. P...
Insects and Plants hold keys to sustainable fruit growing
Insects and Plants fruit growing
2010/2/10
A leading expert on the insect pests which damage fruit and other horticultural crops, Professor Jerry Cross, will be giving an Inaugural Professorial Lecture at the University of Greenwich at Medway ...
DAMAGES CAUSED BY INSECTS OCCURRING ON Rumex confertus Willd
biological control Rumex confertus Willd. mossy sorrel insects damage
2009/3/30
Rumex confertus Willd., a dangerous weed, characterized by its high reproduction potential, occurs in new stands in Poland every year. Its chemical control is difficult due to the rich root system. T...
Why Insecticides Are More Toxic to Insects than People：The Unique Toxicology of Insects
acetylcholinesterase Bt endotoxin chitin synthesis γ-aminobutyric acid receptor
2009/3/6
The unique toxicology of insects provides the safety mechanisms for the major insecticides. The selectivity of insecticidal nerve poisons is attributable to structural differences in binding subsite...
Unraveling the mystery of spinosad resistance in insects
spinosad resistance nicotinic acetylcholine receptor Musca domestica Plutella xylostella
2009/3/5
Spinosad is a new and highly promising insecticide, derived from the bacteria Saccharopolyspora spinosa, with efficacy against a wide range of insects. The mechanism of action of spinosad appears to...
THE BEGINNING AND THE END OF THE INSECTS' FLIGHT TOWARDS THE LIGHT ACCORDING TO DIFFERENT ENVIRONMENTAL LIGHTINGS
Lepidoptera flying threshold lux
2008/9/23
Many news bulletins found in the literature only consent themselves with the description of the night distribution of the trapped species not examining the beginning and the end of the insects' flight...
Survival of Selected Generalist Predaceous Insects Exposed to Insecticide Residues on Cotton
Cotton Insecticide Residues Insects
2008/5/9
Cotton insect management should include conservation of natural enemies of major pests. This study was conducted to determine residual effects of commonly used insecticides on two predators of two maj...
Results of treatments with natural insecticidal substances on the development and physiological state of insects
natural insecticidal substances the development and physiological state of insects water loss
2006/12/1
Results of treatments with natural insecticidal substances on the development and physiological state of insects.