Results 101 to 110 of about 85,012 (306)

Larval antibiosis to cabbage stem flea beetle (Psylliodes chrysocephala) is absent within oilseed rape (Brassica napus)

open access: yesPest Management Science, EarlyView.
We screened a panel of 98 Brassicaceae genotypes (97 Brassica napus and 1 Sinapis alba) for cabbage stem flea beetle (Psylliodes chrysocephala) larval antibiosis. We found limited evidence for antibiosis across B. napus but consistent antibiosis in S. alba. Brassicaceae relatives may therefore better inform resistance traits for breeding.
Ryan E Brock   +3 more
wiley   +1 more source

Differential Thermal Analysis of Peat and Peat Humic Acids

open access: yes
This article describes the character of thermal decomposition of peat and peat humic acids of two peat profiles from ombrotrophic bogs in Latvia in relation to their origin.
Porsnovs, Dmitrijs   +2 more
core  

The Farnham Peat Collection: A Subject Catalog of the Peat Research Materials in the Natural Resources Library

open access: yes, 1990
This book is a subject catalog of a special collection of peat research materials donated to the University of Minnesota Duluth by Rouse S. Farnham, retired professor of soil science at the University of Minnesota Twin Cities.
Hauck, Barbara H.   +3 more
core  

[Dr. Raymond Peat at Blake College, Valle de Bravo, Mex.]

open access: yes, 2003
Photocopy of a portrait of Dr. Raymond Peat at Blake College in 1965.
Peat, Raymond
core   +1 more source

The ash content of the plough layer of peat lands cultivated by different methods

open access: yesAgricultural and Food Science, 1961
The results of this investigation justify the conclusion that the ash content of peat increases under cultivation through the effects of the administered fertilizers and soil improving agents.
Yrjö Pessi
doaj  

BIOLOGICAL WAYS OF STRUGGLE AGAINST WATER EROSION ON ARABLE SLOPES OF THE CENTRAL RUSSIA [PDF]

open access: yesScientific Papers Series : Management, Economic Engineering in Agriculture and Rural Development, 2013
In article are proved a choice of ways of struggle against water erosion of arable slopes on the basis of harnessing the potential of bio-based agrocenosis.
Tatyana ANISIMOVA
doaj  

Alcoholic extracts of Russian sage (Salvia yangii) contain bioactive terpenoids with inhibitory activity against grapevine downy mildew (Plasmopara viticola)

open access: yesPest Management Science, EarlyView.
Alcoholic extracts from flowers, leaves, and shoots of Russian sage decreased downy mildew severity on grapevine leaf disks. Fractionation followed by metabolomic analysis revealed putative terpenoids as the main components of the active fractions. Specifically, 7‐methylrosmanol, 12‐O‐methylcarnosic acid, carnosic acid, and carnosol were identified as ...
Anna Smaldone   +5 more
wiley   +1 more source

ESTIMATION OF SOIL-PROTECTIVE SYSTEM WITH USE OF BIORESOURCES OF AGRICULTURE ON THE BASIS OF USE OF AGROCENOSIS ON THE GREY FOREST SOILS [PDF]

open access: yesScientific Papers Series : Management, Economic Engineering in Agriculture and Rural Development, 2013
The experimental data of long-term researches establishing high efficiency of soil-protective system of agriculture with use of bioresources on biological and humus in condition of arable grey forest soil has been presented.
Irina RUSAKOVA
doaj  

Stability studies of cynaropicrin–major sesquiterpene lactone of Cynara cardunculus leaves

open access: yesPest Management Science, EarlyView.
This study investigated its stability under high temperature and pH, mimicking agronomic extremes and under soil context. Bioassays demonstrated that degradation products exhibited higher phytotoxic activity than cynaropicrin and deacylcynaropicrin. This is the first study about cynaropicrin's stability, characterizing degradation products, and their ...
Daniela Rosa   +6 more
wiley   +1 more source

Controls on Carbon Cycling in Upland Blanket Peat Soils [PDF]

open access: yes, 2012
Peatlands are a globally important, terrestrial store of carbon and the UK is recognised as an internationally significant holder of peatlands. Of all the kinds of peatland found in the UK, blanket bogs are dominant, representing 87% of the UK’s peatland
DIXON, SIMON,DAVID
core  

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