搜索结果: 46-60 共查到“知识库 杂草防治”相关记录487条 . 查询时间(4.871 秒)
4种芽前除草剂防除直播小白菜田杂草的效果及其安全性
小白菜 芽前除草剂 除草效果 安全性
2017/11/27
采用田间试验方法研究了33%二甲戊灵乳油、96%精异丙甲草胺乳油、50%敌草胺水分散粒剂和90%禾草丹乳油4种芽前除草剂防除直播小白菜田杂草效果及其安全性, 筛选出了适于直播小白菜田的芽前除草剂。结果表明, 药后35 d, 33%二甲戊灵乳油有效用量371.25~742.5 g/hm2、96%精异丙甲草胺乳油 864~1 080 g/hm2和90%禾草丹乳油1 687.5~2 025 g/hm2处...
在黄花棘豆的不同生育期(返青期、现蕾期和初花期)以不同浓度的21%氯氨吡啶酸水剂对天然草地进行喷施, 探讨其对黄花棘豆的防控效果和对草地植被的影响。结果表明, 21%氯氨吡啶酸水剂对于黄花棘豆有很强的灭除效果:喷施后15 d, 85%的植株表现出明显药害症状; 喷施后35 d, 92.5%的植株药害等级达到4级。喷施后75 d, 125.0 mL/hm2处理的株防效可达85%以上; 187.5 m...
Progress toward Environmental Weed Eradication in New Zealand
Environmental weed eradication New Zealand weed control
2015/12/26
Data on 111 environmental weed eradication programs carried out by the New Zealand Department of Conservation (DOC) have been collected and summarized. A total of 21 programs were discontinued, and 90...
Mapping Giant Reed (Arundo donax) Infestations along the Texas–Mexico Portion of the Rio Grande with Aerial Photography
Invasive weed area estimation image classification maximum likelihood classifier
2015/12/26
Giant reed is an invasive weed throughout the southern half of the United States, with the densest stands growing along the coastal rivers of southern California and the Rio Grande in Texas. The objec...
Downy Brome (Bromus tectorum) Control for Pipeline Restoration
Cheatgrass oil and gas development propagule supply seed dispersal soil bulk density soil compaction
2015/12/26
Energy-extraction disturbances entail soil handling and often have large edge-to-area ratios. These characteristics should be considered when designing weed-control strategies. In western North Americ...
Herbicide Program Approaches for Managing Glyphosate-Resistant Palmer Amaranth (Amaranthus palmeri) and Waterhemp (Amaranthus tuberculatus and Amaranthus rudis) in Future Soybean-Trait Technologies
Herbicide-resistant crop traits herbicide-resistant weeds
2015/12/23
Herbicide-resistant Amaranthus spp. continue to cause management difficulties in soybean. New
soybean technologies under development, including resistance to various combinations of glyphosate,...
Labor-Saving Weed Technologies for Lowland Rice Farmers in sub-Saharan Africa
Chemical weed control hand weeding irrigated lowland mechanical weed contro
2015/12/23
Time requirements, weed control efficacy, and yield effects of three labor-saving weed technologies
were tested against hand weeding during three seasons in 2012 and 2013. The technologies incl...
Department of Entomology and Plant Pathology, University of Tennessee, Jackson
Crop consultants fallow glyphosate rate
2015/12/23
Glyphosate is the leading herbicide used in glyphosate-resistant (GR) crops and no-till
production systems. Evolved resistance to glyphosate in kochia was first reported in Kansas in
2007. Sho...
Corn Response to POST-Applied HPPD-Inhibitor Based Premix Herbicides with In-Furrow and Foliar-Applied Insecticides
Corn herbicide and insecticide corn injury herbicide and insecticide interaction
2015/12/23
In recent years injury has been reported in numerous Tennessee corn fields treated with an
organophosphate (OP) insecticide and either a mesotrione- or tembotrione-based herbicide premix.
Rese...
Targeting Weed Seeds In-Crop: A New Weed Control Paradigm for Global Agriculture
Bale direct system chaff carts Harrington seed destructor
2015/12/23
The widespread evolution of multiple herbicide resistance in the most serious annual weeds infesting Australian cropping
fields has forced the development of alternative, non-chemical weed cont...
Recent Weed Control, Weed Management, and Integrated Weed Management
Alternative weed control biological control chemical weed control
2015/12/23
Integrated weed management (IWM) can be defined as a holistic approach to weed management that integrates different
methods of weed control to provide the crop with an advantage over weeds. It ...
Palmer Amaranth (Amaranthus palmeri): A Review
Biology genetics physiology herbicide resistance
2015/12/23
In little over 20 yr, Palmer amaranth has risen from relative obscurity to its current status as one of the most widespread,
troublesome, and economically damaging agronomic weeds in the southeastern...
Towards a No-Till No-Spray Future? Introduction to a Symposium on Nonchemical Weed Management for Reduced-Tillage Cropping Systems
No-Till No-Spray Future Symposium on Nonchemical Weed
2015/12/23
Reduced-tillage systems including no-tillage and stripillage have well-known benefits for conserving and improving
soils, protecting vulnerable crops from extreme weather
events, and reducing ...
Cover Crops for Weed Management in Southern Reduced-Tillage Vegetable Cropping Systems
Alternative weed control conservation agriculture
2015/12/23
With growing agricultural demands from both conventional and organic systems comes the need for sustainable practices
to ensure long-term productivity. Implementation of reduced- or no-till practices...
Weed Ecology and Nonchemical Management under Strip-Tillage: Implications for Northern U.S. Vegetable Cropping Systems
Tillage vegetable crops weed control
2015/12/23
In northern U.S. vegetable cropping systems, attempts at no-till (NT) production have generally failed because of poor crop
establishment and delayed crop maturity. Strip tillage (ST) minimizes these...