Results 61 to 70 of about 300,199 (293)

Weeds in field crop rotations

open access: yesАграрная наука Евро-Северо-Востока, 2018
The purpose of the research is to trace the dynamics of weed infestation and determine the species composition of weeds in field crop rotations, to show the impact of crop rotation, agricultural background and time on weed infestation of crops.
S. A. Zamyatin   +2 more
doaj   +1 more source

WEED INFESTATION AND BIODIVERSITY OF WINTER WHEAT UNDER THE EFFECT OF LONG-TERM CROP ROTATION

open access: yes, 2018
The paper presents the study of the floristic composition of weeds and weed infestation in winter wheat in long-term crop rotations at the experimental station near Novi Sad (Serbia).
L. Nikolić
semanticscholar   +1 more source

Field investigation of glucosinolates and morphological traits in mitigating Psylliodes chrysocephala larval infestation through crop varieties and companion planting

open access: yesPest Management Science, EarlyView.
Genotype and cropping system influenced oilseed rape ecophysiological traits, including glucosinolate compounds (glucoraphanin, glucobrassicanapin, and butyl‐glucosinolates) and biomass, which were linked to Psylliodes chrysocephala larval infestation, with varietal effects stronger than faba bean companion planting.
Laurie Magnin   +4 more
wiley   +1 more source

Weed infestation of crops in different soils in the protective zone of Roztocze National Park. Part I. Winter and spring cereals

open access: yesActa Agrobotanica, 2013
The study on weed infestation of crops in different soils in the protective zone of RPN was conducted in the years 1991-1995. The characterization of weed infestation of winter and spring cereals was based on 306 phytosociological records.
Marta Ziemińska-Smyk, Czesława Trąba
doaj   +1 more source

Weed Infestation, Growth and Yield of Maize (Zea mays L.) as Influencedby Periods of Weed Interference

open access: yes, 2017
Field trials were conducted at the Teaching and Research Farm of the Kwara State University, Nigeria, during the 2013 and 2014 cropping seasons. The aim was to determine the effect of periods of weed interference on weed infestation, maize growth and ...
Imoloame Eo, Omo Jo
semanticscholar   +1 more source

Effects of bioinsecticide exposure route on aphids and their natural enemies in oilseed rape

open access: yesPest Management Science, EarlyView.
Fatty acids, silicone polymers and surfactants reduced aphid numbers but caused natural enemy mortality under direct exposure, while minimal residual activity suggests potential for targeted, compatible use in integrated pest management. Abstract BACKGROUND Myzus persicae Sulzer and Brevicoryne brassicae L.
Aimee J. Tonks   +3 more
wiley   +1 more source

The influence of soil tillage systems and weed control methods on weed infestation of potato (Solanum tuberosum L.)

open access: yesActa Agrobotanica, 2012
A field experiment was conducted in the years 2002- 2004 at the Zawady Agricultural Experimental Station (52o06' N; 22o06' E), belonging to the University of Podlasie in Siedlce, Poland. The investigated factors were two soil tillage systems (traditional
Krystyna Zarzecka   +2 more
doaj   +1 more source

Interference Periods of Weeds Infesting Maize Crop

open access: yesJournal of Agricultural Science, 2018
When competing with crops, weeds interfere with their growth and consequently reduce grain yield. The purpose of this research was to determine the periods of interference; PIP (pre-interference period), TPWC (total period of weed control), and CPWC (critical period of weed control) of the weeds Alexandergrass (Urochloa plantaginea) and southern ...
Leandro Galon   +8 more
openaire   +2 more sources

Seedling resistance and chemical defenses against Psylliodes chrysocephala: the roles of seed age and sinapinic acid in Sinapis alba and Brassica napus

open access: yesPest Management Science, EarlyView.
The cabbage stem flea beetle (Psylliodes chrysocephala) is a major pest of winter oilseed rape (Brassica napus). We tested B. napus and Sinapis alba seedlings for feeding resistance and underlying chemical defenses. S. alba was least damaged, while metabolite profiles revealed resistance‐linked compounds, highlighting breeding potential for insect ...
Daniel Rüde   +4 more
wiley   +1 more source

The effect of catch crops cultivated in accordance with the agri-environment scheme on weed infestation of spring wheat stand

open access: yesPlant, Soil and Environment, 2016
The aim of the conducted study was to assess the effect of two types of stubble catch crops (a mixture of legumes and white mustard) as well as varied nitrogen fertilization on weed infestation of a spring wheat stand depending on the adopted tillage ...
W. Wojciechowski   +3 more
doaj   +1 more source

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