搜索结果: 1-15 共查到“作物学 Weed”相关记录35条 . 查询时间(0.015 秒)
《Weed management in direct-seeded rice systems》（图）
Weed management in direct-seeded rice systems Bhagirath Singh Chauhan
2013/11/20
Direct -seeded rice systems have several advantages. Weeds, however, are considered one of the major biological constraints in these systems because there is no seedling size advantage as rice and wee...
The 49th BCPC Annual Weed Review chaired by Gordon Anderson-Taylor, Bayer Crop Science, was held at the PGRO, Peterborough, on 24 October 2012. The Review addresses technology solutions for product lo...
48th Annual BCPC Weed Review 2011。
The 47th BCPC Annual Weed Review chaired by David Parish, TAG Consulting, was held at the PGRO, Peterborough, on 8 November 2010 a key focus was new herbicides and the problems faced with getting good...
Effect of incorporation of legumes on selected soil chemical properties and weed growth in a potato cropping system at Timboroa, Kenya
Soil fertility soil acidity weeds control legumes potato yield
2011/1/12
The effect of incorporation of lupine and garden pea on selected soil chemical properties and growth of weeds in a potato cropping system was evaluated in North Rift, Kenya. The study was carried out ...
Effects of cultural practices on weed flora in Virginia (flue-cured) organic tobacco (Nicotiana tabacum L.): green manure and irrigation systems
Allelopathy drip irrigation green manure organic tobacco sprinkler irrigation weed flora
2010/10/29
Organic tobacco is a new industrial crop. Field experiments were conducted, during 2005-2006, to determine the effects of irrigation system and green manure on weed flora in organic tobacco crops (Nic...
Effect of inter-row spacing and plant population on weed dynamics and maize
Row spacing plant population weed density weed biomass maize yield
2011/1/10
A study was conducted to determine the effects of inter-row spacing (45 and 90 cm) and plant population (40000 and 60000 plants ha-1) on weed biomass and the yield of both green and grain materials of...
Weed control in maize (Zea mays L.) with effective minimum rates of foramsulfuron
Weed maize foramsulfuron ED90 dose-response ammonium-sulfate
2010/2/24
Dose-response experiments were conducted under controlled conditions to determine the effective minimum rates (ED90) of foramsulfuron for 11 weed species that occur in maize growing areas in Turkey. A...
Genotypic Variation in Ability to Recover from Weed Competition at Early Vegetative Stage in Upland Rice
Improved cultivar Laos Recover from weed competition Slash-and-burn Traditional cultivar Upland rice
2010/3/4
In northern Laos, weeds are a major constraint to upland rice production in slash-and-burn systems. Two experiments were conducted to assess genotypic variation in ability to recover from weed competi...
Effect of Incorporation of Hairy Vetch and Rye Grown as Cover Crops on Weed Suppression Related with Phenolics and Nitrogen Contents of Soil
Cover crop Phenolics Soil carbon Soil nitrogen Weed occurrence
2010/3/4
Characterization of the release of degradable components of cover crops is important for determining the quality of soil nutrients for the following crop and weed occurrence. We have examined the temp...
Effect of Chinese Milk Vetch (Astragalus sinicus L.) as a Cover Crop on Weed Control,Growth and Yield of Wheat under Different Tillage Systems
Chinese milk vetch Minimum tillage No-tillage Weed Control
2009/7/24
Reduced tillage systems are gaining popularity but weed control is often a limiting factor in the adoption of such systems. Cover crops have become a viable option for sustainable agriculture because ...
Non-chemical weed control in sugar beet crop under an intensive and conservation soil tillage pattern: II. Crop productivity
non-chemical weed control intensive and conservation soil tillage sugar beet crop mulch yield quality
2010/1/19
According to the results of the experiment, at lower temperature and average precipitation
vegetation conditions (2004), a significantly higher yield of sugar beet roots was found in
intensively t...
IMPACT OF SOIL CULTIVATION AND WEED CONTROL METHODS ON NUTRIENT YIELDS AND ECONOMIC EFFECTIVENESS OF POTATO CULTIVATION PART I. POTATO NUTRIENT YIELDS
soil tillage methods weed control methods tuber dry matter yield starch yield
2009/3/31
Research results come from a field experiment which was conducted over 2002-2004 at the Zawady Experimental Farm owned by the University of Podlasie, Siedlce (52o06’ N; 22o06’ E). Experimental design...
WEED INFESTATION OF THREE GRAIN SPECIES CULTIVATED UNDER CEREAL CROP ROTATION AND THREE TECHNOLOGIES VARYING IN PRODUCTION INTENSITY
cereal crop rotation intensity of production technology weed infestation winter wheat winter triticale spring bar ley
2009/3/31
Assessment of weed infestation in winter wheat, winter triticale and spring barley cultivated since year 1998 in cereal crop rotation under three technologies varying in production intensity was cond...
INFLUENCE OF TILLAGE METHODS AND NITROGEN FERTILISATION ON WEED EMERGENCE AND DEVELOPMENT IN WINTER TRITICALE
winter triticale soil tillage fertilisation with nitrogen weeds
2009/3/31
The paper presents the results of two experiments which covered the relationships between the tillage method (ploughing and non-plough tillage) and the level of nitrogen fertilisation (50 and 150 kg N...