Results 51 to 60 of about 220,501 (214)

Strength properties of sandy soil-cement admixtures [PDF]

open access: yesGeotechnical and Geological Engineering, 2009
Soil stabilization with cement is a good solution for the construction of subgrades for roadway and railway lines, especially in “noble” foundations layers, under the platforms, and mostly in transition zones between embankments and rigid structures, where the mechanical properties of supporting soils are very much demand full ...
António Viana da Fonseca   +2 more
openaire   +2 more sources

Wheat growth and phytoavailability of copper and zinc as affected by soil texture in saline-sodic conditions [PDF]

open access: yes, 2011
Nutrient disorders in saline-sodic soils can adversely affect crop growth. In order to evaluate the growth response of wheat (Triticum aestivum L.) to Cu and Zn and the phytoavailability of these essential elements, a pot experiment was conducted in ...
Ahmed, Niaz   +5 more
core   +1 more source

S-index and soybean root growth in different soil textural classes

open access: yesRevista Brasileira de Engenharia Agrícola e Ambiental, 2016
This study tested the hypothesis that the limiting values of S-index, proposed in the literature can not be used to determine the degradation condition of soils under soybean cultivation in the state of Pará, Brazil.
Pedro D. de Oliveira   +3 more
doaj   +1 more source

Physical methods for soil disinfestation in intensive agriculture: Old methods and new approaches [PDF]

open access: yes, 2010
Physical soil disinfestation is worldwide mainly applied in protected cropping systems or in small-scale intensive field crops. Continuous cropping of monocultures or different host plants for the same pest or pathogen often leads to heavily infested ...
Molendijk, L.P.G., Runia, W.T.
core   +2 more sources

Pedogenesis in a topo-climosequence in the Agreste region of Pernambuco

open access: yesRevista Ciência Agronômica
The Borborema Plateau is characterized by different stages of relief evolution, which modify the climate and vegetation, and where high-altitude tropical forests can be seen surrounded by caatinga. The aim of this study was to characterize the soils of a
Carlos Roberto Pinheiro Junior   +4 more
doaj   +1 more source

The dielectric properties of soil-water mixtures at microwave frequencies [PDF]

open access: yes
Recent measurements on the dielectric constants of soil-water mixtures show the existence of two frequency regions in which the dielectric behavior of these mixtures was quite different. At the frequencies of 1.4 GHz to 5 GHz, there were strong evidences
Wang, J. R.
core   +1 more source

CP 03-1912: A Sugarcane Cultivar Expanding on Sand Soil in Florida

open access: yesEDIS
The purpose of this fact sheet is to provide basic informa­tion and yield and disease information for CP 03-1912 to assist growers in a decision-making process of whether to further expand acreage of this cultivar with a clearer expectation of potential
Hardev Sandhu   +3 more
doaj   +1 more source

Differences in soil properties and crop yields after application of biochar blended with farmyard manure in sandy and loamy soils

open access: yesActa Fytotechnica et Zootechnica, 2019
In recent years, the importance of biochar application in world´s soils have increased tendency mainly due to its opposite effects. Therefore, the effort of many companies is based on the development of soil amendment which together improved properties ...
Vladimír Šimanský   +2 more
doaj   +1 more source

Solos e geoambientes do Parque Nacional do Viruá e entorno, Roraima: visão integrada da paisagem e serviço ambiental

open access: yesCiência Florestal, 2013
The Viruá National Park (PARNA Viruá) occupies 227.011 ha, in the region of the low ‘Branco’ river, in Roraima state. This area includes an extensive mosaic of complex seasonally flooded forested and nonforested environments.
Bruno Araujo Furtado de Mendonça   +6 more
doaj  

Can organic farming help to reduce N-losses? Experiences from Denmark [PDF]

open access: yes, 1998
This study is in two parts. In the first part, nitrogen N)losses per unit of milk and meat in Danish conventional and organic pig and dairy farming were compared on the basis of farm data.
Dalgaard, T.   +2 more
core  

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