搜索结果: 1-14 共查到“杂草防治 yield”相关记录14条 . 查询时间(0.099 秒)
Sugar beet yield loss predicted by relative weed cover, weed biomass and weed density
crop–weed interaction weed competition yield loss function
2016/4/6
Sugar beet yield loss was predicted from early observations of weed density, relative weed cover, and weed biomass using non-linear regression models. Six field experiments were conducted in Germany a...
Pre-plant weed control, optimum N rate and plant densities increase butternut (Cucurbita moschata) yield under smallholder irrigated conditions in the Eastern Cape Province of South Africa
Pre-plant weed control plant density N rate butternut yield
2010/5/31
Weed management is the most important limiting factor in butternut production by smallholder irrigation farmers in South Africa. Post-emergence chemical weed control options for butternut farms are ve...
Effect of green manure legume - maize rotation on maize grain yield and weed infestation levels
Green manure legume maize rotation weed infestation
2010/3/15
The use of green manure legumes (GLM) as cover crops in rotation with maize has the potential to enhance maize yields. The objectives of this study were to determine the effect of GML - maize rotation...
EFFECT OF A NEW POST EMERGENCE HERBICIDE APPLICATION IN COMBINATION WITH UREA ON GROWTH,YIELD AND WEEDS CONTROL IN MAIZE,ZEA MAYS L
Zea mays weeds herbicides urea Pakistan
2009/9/29
A study was conducted at the Institute of Soil and Environmental Sciences, University
of Agriculture, Faisalabad, Pakistan during 2005. In this study effectiveness of various
doses of a new post-eme...
EFFECT OF WEED COMPETITION PERIOD ON YIELD AND YIELD COMPONENTS OF WHEAT
Triticum aestivum weed control agronomic characters Pakistan
2009/9/29
Weeds competition in wheat (Triticum aestivum) crop was investigated at Adaptive
Research Farm, Gujranwala during rabi, 2003-2004 and 2004-2005. The treatments
comprised weed competition with crop f...
Influence of thermal effect duration on onion yield
Organic Agriculture thermal effect onion plant temperature high temperature medium
2009/6/30
Organic Agriculture development is directly linked to ecologically pure weed
removal. One of the ecological weed control processes is thermal weed control using wet water
vapour. The analysis of d...
CORRELATIONS BETWEEN WEED INFESTATION AND POTATO TUBER YIELD AND ITS STRUCTURE DEPENDING ON THE FERTILIZATION SYSTEMS AND THE AGRONOMICAL CATEGORY OF SOIL
tuber fractions correlations fertilization soil type weed infestation potato
2009/3/31
The field research was carried out in the years 2000-2003 at the Experimental Farm of Lublin Agricultural University, located in Bezek near Chełm (51o19’ N; 23o26’ E). The purpose of this work wa...
IMPACT OF SOIL CULTIVATION AND WEED CONTROL METHODS ON NUTRIENT YIELD AND ECONOMIC EFFECTIVENESS OF POTATO CULTIVATION PART II. ECONOMIC EFFECT OF VARIOUS INTENSITY OF WEED CONTROL IN POTATO CULTIVATION
marketable yield differential computations potato weed control soil tillage
2009/3/31
A field experiment was carried out in the years 2002-2004 at the Zawady Experimental Farm owned by the University of Podlasie, Siedlce (52o06’ N; 22o06’ E). The factors were: two methods of soil till...
EFFECT OF HERBICIDE APPLICATION METHOD ON WEED INFESTATION AND GRAIN YIELD OF WINTER WHEAT
wheat weed control herbicide mixtures Apera spica-venti
2009/3/30
Three-year field experiment (1999-2001) was conducted to determine the effectiveness of Treflan 480 EC herbicide (trifluraline) for common windgrass (Apera spica-venti) control applied directly after ...
EFFECT OF SOWING DENSITY, HERBICIDES AND HARROWING APPLICATION ON YIELD AND CONTENT OF TOTAL PROTEIN AND STARCH IN ‘WANAD’ SPRING TRITICALE KERNELS
spring triticale yield of kernels and protein starch sowing density herbicides harrowing
2009/3/30
The aim of the present study was to determine the effect of three levels of the sowing density: 500, 670 and 750 kernels per square meter and two herbicides: Arleon 75 WP and Puma Super 069 EW and har...
Effect of Different Control Methods on Weeds, Yield Components and Nodulation in the Spring Lentil
Lentil weed herbicides nodulation Rhizobium
2009/1/13
This study was conducted on the lentil cultivar Malazgirt 89 during 1999 and 2000 to determine the most appropriate method for controlling weeds. In the experiments, hand hoeing, trifluralin, imazetha...
Effect of Glyphosate on Fruit Retention, Yield, and Fiber Quality of Glyphosate Resistant Cotton
Cotton Yield Fruit Retention Glyphosate
2008/6/4
Glyphosate-resistant cotton allows growers greater flexibility in timing herbicide applications, as well as a broader spectrum of weed control, than that offered by other herbicide systems. Despite ov...
Effect of Sources of Nitrogen and Intercropping on Weed Control, Growth and Yield of Cotton
Cotton intercropping organic inorganic growth weeds and yield
2008/4/30
Field experiments were conducted at Tamil Nadu Agricultural University, Coimbatore, India
during winter (August - January) seasons of 2002 - 03 and 2003 - 04 in cotton to evaluate the effect of inter...
Yield Of Glyphosate-Tolerant Cotton As Affected By Topical Glyphosate Applications On The Texas High Plains And Rolling Plains
Texas High Plains Glyphosate-Tolerant Cotton Topical Glyphosate Weed Science
2008/4/23
Boll abscission may occur following glyphosate application to glyphosate-tolerant cotton (Gossypium hirsutum L.) due to altered male floral morphology and poor pollination. The ability of glyphosate-t...