نتایج جستجو برای: calcareous soils

تعداد نتایج: 51258  

Journal: :Nutrient Cycling in Agroecosystems 2022

Abstract Phosphorus (P) reactions in calcareous soils limit the concentration of P soil solution for plant uptake. Calcareous with high calcium carbonate content (CaCO 3 ) and pH have low fertiliser efficiency, leading to crop deficiency limited productivity. The aim this work was test if acidifying amendments could reduce improve solubility nutrition biomass. Three varying CaCO (14–29% w/w) we...

Journal: :Journal of Agricultural Sciences, Belgrade 2002

ژورنال: علوم آب و خاک 2007
امیر فتوت, , غلامحسین حق‌نیا, , اکرم حلاج‌نیا, , رضا خراسانی, ,

Study of phosphorus reactions over time and the role of organic matter in the calcareous soils are important for the development of P fertilizer and manure management practices. The objective of this study was to determine the effect of applied manure on P availability and its chemical forms in the soil, over time. Eight samples were collected from semi-arid calcareous soils of Mashhad plain. T...

Journal: :journal of agricultural science and technology 2010
a. samadi

to evaluate the relationships between soil inorganic phosphorus p (pi) fractions, the soil p test and plant parameters such as plant p uptake, dry matter yield, tissue p concentra-tion and relative yield, glasshouse experiments and chemical analyses were conducted on 13 calcareous soils from six agricultural and seven adjacent bushland (virgin soil) sites. four rates of p (0, 15, 30, 60 mg/kg s...

اشرف امیری نژاد, علی , باقر نژاد, مجید ,

The calcification of soils and the effects of topography on this process were studied in semi-arid regions of Kermanshah. From a toposequence, based on the previous soil surveys of the region, five profiles were selected, and field studies and laboratory analyses were carried out on soils. Alluvial - colluvial fans, piedmont alluvial plains, and old plateaux were three main physiographies on th...

A. Abtahi A. Gholami H.R. Owliaie M. Baghernejad

ABSTRACT- Paddy soils make up the largest anthropogenic wetlands on earth. Present study was performed to investigate and compare soil formation of paddy soils with long-term rice cultivation history with non-paddy soils and study the effect of waterlogging on soil pedogenesis. Soil samples were taken from paddy and non-paddy soils derived from the same calcareous parent materials. Some pedogen...

2004
A. G. Lapenis G. B. Lawrence A. A. Andreev A. A. Bobrov M. S. Torn J. W. Harden

[1] It is commonly believed that fine-textured soils developed on carbonate parent material are well buffered from possible acidification. There are no data, however, that document resistance of such soils to acidic deposition exposure on a timescale longer than 30–40 years. In this paper, we report on directly testing the long-term buffering capacity of nineteenth century forest soils develope...

Journal: :Environmental pollution 2009
G Uzu S Sobanska Y Aliouane P Pradere C Dumat

Particles from channelled emissions of a battery recycling facility were size-segregated and investigated to correlate their speciation and morphology with their transfer towards lettuce. Microculture experiments carried out with various calcareous soils spiked with micronic and sub-micronic particles (1650+/-20mg Pb kg(-1)) highlighted a greater transfer in soils mixed with the finest particle...

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