Results 71 to 80 of about 6,310,741 (415)

The soil proteolytic activity and organic production of corn under the conditions of applying different nutrition systems [PDF]

open access: yesZbornik Matice Srpske za Prirodne Nauke, 2004
The effects of increasing amounts of mineral nitrogen (90, 120, 150 kg·ha-1) liquid (80 t·ha-1) and solid manure (45 t·ha-1) those of inoculation with Azotobacter chroococcum (the strain 84) on the soil proteolytic activity and corn yield grown in ...
Mandić Leka G.   +2 more
doaj   +1 more source

The global carbon dioxide flux in soil respiration and its relationship to vegetation and climate

open access: yes, 1992
We review measured rates of soil respiration from terrestrial and wetland ecosystems to define the annual global CO 2 flux from soils, to identify uncertainties in the global flux estimate, and to investigate the influences of temperature, precipitation,
J. Raich, W. Schlesinger
semanticscholar   +1 more source

Protein O‐glycosylation in the Bacteroidota phylum

open access: yesFEBS Open Bio, EarlyView.
Species of the Bacteroidota phylum exhibit a unique O‐glycosylation system. It modifies noncytoplasmic proteins on a specific amino acid motif with a shared glycan core but a species‐specific outer glycan. A locus of multiple glycosyltransferases responsible for the synthesis of the outer glycan has been identified.
Lonneke Hoffmanns   +2 more
wiley   +1 more source

Dutch soil management and soil fertility [PDF]

open access: yes, 2011
The organic sector depends heavily on its soils. In the Netherlands, relatively little acreage is available per farm compared to other countries. This means that the soil has to be kept in optimal shape for production, be it vegetables, cereals, potatoes
Sukkel, Wijnand
core  

Water-repellent soil and its relationship to granularity, surface roughness and hydrophobicity: a materials science view [PDF]

open access: yes, 2005
Considerable soil water repellency has been observed at a wide range of locations worldwide. The soil exhibiting water repellency is found within the upper part of the soil profile.
McHale, Glen   +2 more
core   +1 more source

Florística, estrutura e características do solo de um fragmento de floresta paludosa no sudeste do Brasil Floristics, structure and soil characteristics of a swamp forest fragment, in southeast Brazil

open access: yesActa Botânica Brasílica, 2007
Realizou-se o levantamento da comunidade arbórea de uma floresta semidecidual montana ribeirinha, situada no alto Rio Pardo, Santa Rita de Caldas, Minas Gerais (altitude 1.156 a 1.203 m), com o objetivo de avaliar as variações estruturais e variáveis ...
Laércio Loures   +3 more
doaj   +1 more source

The availability of base elements (Ca, Mg, Na, K) in some important soil types in Serbia [PDF]

open access: yesZbornik Matice Srpske za Prirodne Nauke, 2003
In this paper results are presented of agrochemical and mineralogical analyses of 14 types of important soils in Serbia (Vojvodina and Central Serbia) and total content and availability of base alkali elements (Ca, Mg Na, K) are determined. Total element
Jakovljević Miodrag D.   +2 more
doaj   +1 more source

Boundaries of photosynthesis: adaptations of carbon fixation in extreme environments

open access: yesFEBS Open Bio, EarlyView.
Photosynthesis faces challenges from environmental extremes of temperature, pH, and salinity, limiting gas diffusion, modifying membrane fluidity, and destabilizing photochemical and biochemical reactions. Photosynthetic organisms have evolved unique adaptations overcoming these stresses and maintaining their photosynthetic activity.
Pere Aguiló‐Nicolau   +3 more
wiley   +1 more source

Prediction of soil available phosphorus based on soil organic carbon [PDF]

open access: yes, 2008
There are many cases in which it is desirable to determine relationships among some soil physical and chemical properties. In soil studies, soil available phosphorous (AP) are often determined using laboratory tests, but it may be more suitable and ...
Khabbaz, Borzoo Ghareei   +2 more
core  

Soil Surveys and Soil Analyses

open access: yesThe Journal of Agricultural Science, 1911
In undertaking a survey of the soils of a given district the methods of analysis and the classification to be adopted (which in its turn shapes the scheme of the work) must be determined by the purpose before the investigator at the outset. His end may be scientific–to assign the soils in question to their types, or practical–to give information to the
Hall, A. D., Russell, E. J.
openaire   +2 more sources

Home - About - Disclaimer - Privacy