Results 21 to 30 of about 3,259 (261)

Impacts of Extensive Sheep Grazing on Soil Physical and Chemical Quality in Open Mountain Forests, NE Portugal

open access: yesSpanish Journal of Soil Science, 2023
Grazing and mechanical clearing are common techniques for vegetation management in open Mediterranean forests. Despite its recognized benefits in the prevention of high-intensity and severity forest fires, it is essential to consider its impacts on the ...
Felícia Fonseca   +7 more
doaj   +1 more source

Effect of Soil Acidity Amelioration on Soil Properties and Yield of French Bean (Phaseolus vulgaris L.) under Rainfed Condition in Arunachal Pradesh

open access: yesInternational Journal of Economic Plants, 2023
Under rainfed conditions yield potential of French bean reduced in the acid soil of Arunachal Pradesh due to low fertility and metal toxicity. Therefore, the current experiment was conducted in ICAR, Basar, Research Farm during rabi season (October ...
Ampee Tasung   +9 more
doaj   +1 more source

Evaluation of traditional methods for estimating lime requirement in Brazilian soils [PDF]

open access: yesRevista Brasileira de Ciência do Solo, 2020
The optimal soil pH for most annual crops in Brazil varies between 5.7 and 6.0. Numerous methods have been developed for estimating lime requirement (LR), but they vary widely in their predictions and fail to raise pH to desired values for optimum crop ...
Welldy Gonçalves Teixeira   +3 more
doaj   +2 more sources

Land Clearing Effect on the Variability of some Soil Properties of an Alfisol in South-Western Nigeria [PDF]

open access: yesTropicultura, 2000
The variability of some soil properties of a mechanically cleared plot was compared with an adjacent plot under natural vegetation in an Alfisol of South-western Nigeria. The soil properties studied were pH, total N, available P, exchangeable acidity Ca,
Eneji, AE., Ayade, BB.
doaj  

Amending Potassic Fertilizer with Charcoal and Sago (Metroxylon sagu) Bark Ash to Improve Potassium Availability in a Tropical Acid Soil

open access: yesAgronomy, 2021
In Ultisols and Oxisols, potassium (K) in the soil solution is leached from the rhizosphere before it interacts with soil colloids, or exchanged with other cations at the exchange sites of the soils because of the abundance of kaolinite clay minerals ...
Puvan Paramisparam   +5 more
doaj   +1 more source

Cation Exchange Properties of Alginic Acid

open access: yesExperimental Biology and Medicine, 1952
SummaryAlginic acid possesses sodium and potassium ion exchange properties which compare favorably with those of a carboxylic type cationic exchange resin. Under in vitro conditions alginic acid at pH 7.6 adsorbs 4.2 meq Na+ per g. The total cation adsorption from solutions containing K+ and Na+ is also 4.2 meq/g and the ratio of Na:K combined ...
B J, LUDWIG, W T, HOLFELD, F M, BERGER
openaire   +2 more sources

Dynamics of physicochemical indicators using various fertilization systems on sod-podzolic sandy loam soil and their Influence on Crop Productivity [PDF]

open access: yesBIO Web of Conferences, 2022
As a result of the studies carried out by the Department of Chemistry, Agrochemistry and Agroecology to improve the physicochemical parameters of sod-podzolic soils in the conditions of the Pskov region, positive results were obtained.
Volodina Tamara   +2 more
doaj   +1 more source

Identification of spectral indicators of soil erosion based on field spectrometry data (A case study of the Chuvash Republic) [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Серия Науки о Земле
The aim of the study is to identify relationships between the agrochemical indicators of the arable layer (humus content, mobile phosphorus, exchangeable potassium, and pH values of exchangeable acidity), field moisture, and spectral characteristics of ...
Iakimovich, Dmitrii Nikolaevich   +3 more
doaj   +1 more source

Extent, Distribution, and Causes of Soil Acidity under Subsistence Farming System and Lime Recommendation: The Case in Wolaita, Southern Ethiopia

open access: yesApplied and Environmental Soil Science, 2021
Soil acidity is one of the most important environmental threats to the Ethiopian highlands where the livelihood of the majority of people is reliant on agriculture.
Fanuel Laekemariam, Kibebew Kibret
doaj   +1 more source

Alleviating aluminum toxicity in an acid sulfate soil from Peninsular Malaysia by calcium silicate application [PDF]

open access: yesSolid Earth, 2016
In response to human population increase, the utilization of acid sulfate soils for rice cultivation is one option for increasing production. The main problems associated with such soils are their low pH values and their associated high content of ...
A. A. Elisa   +3 more
doaj   +1 more source

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