Results 71 to 80 of about 663,795 (207)

Some negative chemical properties of acid soils

open access: yesJournal of the Serbian Chemical Society, 2005
Some important chemical properties of various samples of two types of acid soil from Western Serbia (pseudogley and brown forest) are presented in this paper. Mobile Al was found in elevated and toxic quantities (10?30 mg/100 g) in the more acid samples of pseudogley soil.
Jakovljević, Miodrag D.   +3 more
openaire   +4 more sources

Soil Temperature Protocol [PDF]

open access: yes, 2003
The purpose of this resource is to measure near-surface soil temperatures. Students measure soil temperatures at 5 cm and 10 cm depths using a soil thermometer.
The GLOBE Program, University Corporation for Atmospheric Research (UCAR)
core  

Influence of Eastern Redcedar On Soil In Connecticut Pine Plantations [PDF]

open access: yes, 1950
Physical and chemical properties of surface soil beneath eastern redcedar trees in pine plantations in Connecticut were found to be different from those beneath adjacent pines.
Read, R.A., Walker, Laurence C.
core   +1 more source

Effect of tillage and residue retention on maize productivity [PDF]

open access: yes, 2011
In Bangladesh, maize is generally sown after extensive tilth and minimum residue retention. Conservation agriculture (CA) systems reduce the input costs, machinery use, CO2 emissions; and improve soil health (Raper et al., 1994).
Bell, R.W.   +6 more
core   +1 more source

How wildfires affect soil properties. A brief review

open access: yesCuadernos de Investigación Geográfica, 2014
Wildfires may produce several changes in the short- and longterm in the landscape and in the soil system. The magnitude of these changes induced by fire in the components of ecosystems (water, soil, vegetation and fauna) depends on fire properties (fire ...
L.M. Zavala, R. de Celis, A. Jordán
doaj   +1 more source

Evaluasi Kesuburan Tanah Untuk Pertanaman Tebu Di Kabupaten Rembang, Jawa Tengah / Evaluation of Soil Fertility to Sugarcane at Rembang District, Central Java [PDF]

open access: yes, 2016
Rembang District is an area of Central Java production center which has the main characteristics dominated by dry land. Dry land issues related to the low availability of water and nutrients. It determines the area of soil fertility conditions.
Kadarwati, F. T. (Fitriningdyah)
core  

Comparison of Chemical Soil Properties of Temperate Grassland and Arable Land—A Review

open access: yesSoil Systems
Chemical soil properties contribute to the resilience of soil ecosystems. Healthy soils with optimal nutrient levels, balanced pH and good organic matter content are better able to withstand environmental stresses, such as drought, disease or pests. When
Matthias Filipiak, Katrin Kuka
doaj   +1 more source

The Surface Chemical Composition of Lunar Samples and Its Significance for Optical Properties [PDF]

open access: yes
The surface iron, titanium, calcium, and silicon concentration in numerous lunar soil and rock samples was determined by Auger electron spectroscopy. All soil samples show a large increase in the iron to oxygen ratio compared with samples of pulverized ...
Baron, R. L., Bilson, E., Gold, T.
core   +1 more source

Ground Water-Bottom Soil-Water Interactions in Tropical Carp Nursery Ponds. [PDF]

open access: yes, 1991
There was no significant combined effect (P > 0.05) of the physico-chemical properties of the underground deep tube well water on increasing the nutrient contents of the nursery ponds' bottom soil.
Alam, M.Jahangir   +3 more
core  

Organic residues - a resource for arable soils [PDF]

open access: yes, 2005
An increased recirculation of urban organic residues to arable soils has several environmental benefits, but there is a need for reliable test systems to ensure that soil quality is maintained.
Odlare, Monica
core  

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