Results 61 to 70 of about 999,023 (188)

Temporal dynamics of bacterial and fungal communities during the infection of Brassica rapa roots by the protist Plasmodiophora brassicae.

open access: yesPLoS ONE, 2019
The temporal dynamics of rhizosphere and root microbiota composition was compared between healthy and infected Chinese cabbage plants by the pathogen Plasmodiophora brassicae. When inoculated with P. brassicae, disease was measured at five sampling dates
Lionel Lebreton   +9 more
doaj   +1 more source

Development of root morphology traits of the Czech lucerne varieties in chernozem over a three year period

open access: yesActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2012
The root system of plants is generally in relation to important agronomic and ecological characteristics. The aim of this study was to investigate differences in root morphology development of Czech lucerne varieties under chernozem soil conditions.
Josef Hakl   +3 more
doaj   +1 more source

MRI in soils: determination of water concent changes due to root water uptake by means of a multi-slice-multi-echo sequence (MSME) [PDF]

open access: yes
Root water uptake by ricinus communis (castor bean) in fine sand was investigated using MRI with multiecho sampling. Before starting the experiments the plants germinated and grew for 3 weeks in a cylindrical container with a diameter of 9 cm ...
As, H., van   +5 more
core   +2 more sources

Properties of principal component methods for functional and longitudinal data analysis

open access: yes, 2006
The use of principal component methods to analyze functional data is appropriate in a wide range of different settings. In studies of ``functional data analysis,'' it has often been assumed that a sample of random functions is observed precisely, in the ...
Hall, Peter   +2 more
core   +3 more sources

Effect of White clover (Trifolium repens cv. Huia) cover crop on agronomic properties and soil biology in an organic peach orchard [PDF]

open access: yes, 2012
In orchards, cover crops are interesting alternative strategies to tillage or chemical herbicides for managing weeds in the tree row. However, little is known about the effect of cover crops on agronomic properties and soil biology in organic orchards ...
Bussi, Claude   +3 more
core  

Pattern of Disinfection of Root Canal Dentin by Alternated Acid-Base Irrigating Regimen

open access: yesThe Scientific World Journal, 2019
Objective. To quantify Enterococcus faecalis density in root canal dentin after chemomechanical preparation (CMP) using alternated irrigating regimen. Methodology. Root canals (RC) were contaminated with E.
Janir Alves Soares   +11 more
doaj   +1 more source

Temporal and Cultivar-Specific Effects on Potato Root and Soil Fungal Diversity

open access: yesAgronomy, 2020
The soil fungal community plays an important role in determining plant growth and health. In this study, we investigated the fungal diversity and community composition in the roots and soil of 21 potato (Solanum tuberosum L.) cultivars using high ...
Kaire Loit   +5 more
doaj   +1 more source

In field N transfer, build-up, and leaching in ryegrass-clover mixtures [PDF]

open access: yes, 2008
Two field experiments investigating dynamics in grass-clover mixtures were conducted, using 15N- and 14C-labelling to trace carbon (C) and nitrogen (N) from grass (Lolium perenne L.) and clover (Trifolium repens L. and Trifolium pratense L.).
Eriksen, J   +3 more
core  

Sampling Requirements for Stable Autoregressive Estimation

open access: yes, 2017
We consider the problem of estimating the parameters of a linear univariate autoregressive model with sub-Gaussian innovations from a limited sequence of consecutive observations.
Babadi, Behtash   +4 more
core   +1 more source

Nematode management in potatoes (Irish or white)

open access: yesEDIS, 2019
Plant-parasitic nematodes are a major pest on potatoes in Florida.  Root-knot, sting, and stubby-root nematodes are the primary problems.  Sampling is an important component of confirming nematode problems in a field.  Nematode management relies heavily
Zane Joseph Grabau, J. W. Noling
doaj   +5 more sources

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