نتایج جستجو برای: soil substrates

تعداد نتایج: 258599  

2018
Justyna Likus-Cieślik Marcin Pietrzykowski Marcin Chodak

The impact of tree litter on soil chemistry leachate and sulfurous substrates of mine soils from former Jeziórko sulfur mine was investigated. Composites were used: soil substrate (less contaminated at mean 5090 mg kg-1 S or high contaminated at 42,500 mg kg-1 S) + birch or pine litter and control substrate (no litter). The composites were rinsed with distilled water over 12 weeks. In the obtai...

2011

Arbuscular Mycorrhizal (AM) fungi hold considerable potential for use as inoculant and nowadays much attention is focused on mass production of AM fungal inoculum, since this is of paramount importance in improving plant production in agriculture and horticulture. However, effectivity of these fungi on crop growth relies on their production practices, typically the substrate selected for its ma...

2017
J. Aruna Kumari P. C. Rao G. Padmaja M. Madhavi

Soil is important among all the components of terrestrial ecosystems and is a main source of production in agriculture. Since soil is a dynamic system there is a continuous reaction between soil minerals, organic matter and organisms. These reactions influences physiochemical and biological properties of soil. Soil phosphatases is one of enzyme which plays a major role in the mineralisation pro...

2003
D. A. Neher M. E. Barbercheck S. M. El-Allaf O. Anas

Decomposition of organic matter integrates collective activities of organisms within the soil food web. We compared decomposition of museum board (predominantly cellulose) and balsa wood substrates in 18 sites chosen to represent a completely nested design with two disturbance levels nested within three ecosystems (agriculture, wetland, and forest) and ecosystems nested within three land resour...

Journal: :UC Merced Undergraduate Research Journal 2017

2010
Jack W. McFarland Roger W. Ruess Knut Kielland Kurt Pregitzer Ronald Hendrick

Free amino acids (FAA) constitute a significant fraction of dissolved organic nitrogen (N) in forest soils and play an important role in the N cycle of these ecosystems. However, comparatively little attention has been given to their role as labile carbon (C) substrates that might influence the metabolic status of resident microbial populations. We hypothesized that the residence time of simple...

2014
Steven D. Allison Stephany S. Chacon Donovan P. German

Soil organic carbon is chemically heterogeneous, and microbial decomposers face a physiological challenge in metabolizing the diverse array of compounds present in soil. Different classes of polymeric compounds may require specialized enzymatic pathways for degradation, each of which requires an investment of microbial resources. Here we tested the resource allocation hypothesis, which posits t...

2016
Eric D. Rogers Daria Monaenkova Medhavinee Mijar Apoorva Nori Daniel I. Goldman Philip N. Benfey

Root system architecture (RSA) impacts plant fitness and crop yield by facilitating efficient nutrient and water uptake from the soil. A better understanding of the effects of soil on RSA could improve crop productivity by matching roots to their soil environment. We used x-ray computed tomography to perform a detailed three-dimensional quantification of changes in rice (Oryza sativa) RSA in re...

2015
Thomas Bourguignon Thomas Drouet Jan Šobotník Robert Hanus Yves Roisin Nicolas Chaline

In tropical rainforests, termites constitute an important part of the soil fauna biomass, and as for other soil arthropods, variations in soil composition create opportunities for niche partitioning. The aim of this study was twofold: first, we tested whether soil-feeding termite species differ in the foraging substrate; second, we investigated whether soil-feeding termites select their foragin...

2012
IFTIKHAR AHMAD M. ASLAM KHAN M. QASIM M. SHAHZAD ZAFAR RASHID AHMAD

The effects of various growing substrates, combinations of soil, silt, sand, press mud (PM) and rice hulls (RH) on plant growth, yield and quality of rose (Rosa hybrida L.) cvs. Kardinal, Anjlique and Gold Medal, were studied to standardize substrates for cut rose production and develop better management and quality production protocol. Plant height, number of leaves branch, leaf area, number o...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید