Results 81 to 90 of about 7,697 (226)

Distribution of soil fractions of zinc and its uptake by potatoes, maize, wheat and barley after soil amendment by sludge and inorganic Zn salt

open access: yesPlant, Soil and Environment, 2003
Zinc distribution in the main soil fractions and zinc accumulation in potatoes, maize, wheat and barley after different soil treatments (basic sludge rate, triple sludge rate, NPK, NPK + inorganic Zn) were investigated in a field experiment conducted at ...
P. Dvořák   +4 more
doaj   +1 more source

What Makes Agricultural Intensification Profitable for Mozambican Smallholders? An Appraisal of the Inputs Subsector and the 1996/97 DNER/SG2000 Program, Volume II: Main Report [PDF]

open access: yes
Ministry of Agriculture and Rural Development, Directorate of Economics, Republic of Mozambiquefood security, food policy, Mozambique, agriculture, Farm Management, Q18,
Crawford, Eric W.   +6 more
core   +1 more source

NITROGEN FORMS IN THREE KENYAN SOILS ANDOSOLS, LUVISOLS AND FERRALSOLS

open access: yesInternational Journal for Innovation Education and Research, 2016
The nitrogen cycle in soil is an integral part of the overall cycle of N in nature. The primary source of N is the atmosphere where the strongly bonded gas molecule N is predominately gas (78.08%). Total N content in soils ranges from 0.02% in the subsoil and more than 2.5% in peats; ploughed layers of most cultivated soils contain between 0.06 and 0.5%
George Njomo Karuku, Benson O Mochoge
openaire   +2 more sources

A Modelling Framework for Addressing the Synergies between Global Conventions through Land Use Changes: Carbon Sequestration, Biodiversity Conservation, Prevention of Land Degradation and Food Security in Agricultural and Forested Lands in Developing Countries [PDF]

open access: yes
This paper proposed a methodological framework for the assessment of carbon stocks and the development and identification of land use, land use change and land management scenarios, whereby enhancing carbon sequestration synergistically increases ...
Raul Ponce-Hernandez
core  

Проучване върху биогенната акумулация на тежки метали в повърхностните слоеве на Luvisols и Cambisols от мрежата за мониторинг на горските екосистеми

open access: yesПочвознание, агрохимия и екология, 2012
    Quantitative values for the extent of accumulation of heavy metals in surface soil layers of Luvisols and Cambisols of forest ecosystems were calculated. The average coefficients for Luvisols without exchange acidity were аs follows: Мn — 0.97,
ЛЮДМИЛА МАЛИНОВА
doaj  

Morfologia e classificação de luvissolos e planossolos desenvolvidos de rochas metamórficas no semiárido do nordeste brasileiro Morphology and classification of luvisols and planosols developed on metamorphic rocks in semiarid northeastern Brazil

open access: yesRevista Brasileira de Ciência do Solo, 2009
A região semiárida do Nordeste estende-se por aproximadamente 750 mil km², e em suas áreas Pré-Cambrianas predominam solos rasos e pouco desenvolvidos. Grande parte desses solos é classificada, de acordo com o Sistema Brasileiro de Classificação de Solos,
Lindomário Barros de Oliveira   +3 more
doaj   +1 more source

Impacts of improving water management of smallholder agriculture in the Upper Blue Nile Basin [PDF]

open access: yes
With its total area of about 200,000 square kilometers (km2), which is 20% of the country’s land mass, and accommodating 25% of the population, the Upper Blue Nile Basin (Abbay) is one of the most important river basins in Ethiopia.
Awulachew, Seleshi Bekele   +3 more
core  

Uso de barreras cortavientos en un luvisol cultivado de olivos

open access: yes, 2020
RESUMEN: Uso de redes cortavientos para disminuir la erosión y el transporte de sedimentos en un área concreta semiárida. Un hilo de 13x30 cm-2 y con una red de malla del 39 % frente al viento aumentaron la reducción promedio de erosión hasta un 72% a una altura de 0.4 m en olivares labrados recientemente.
openaire   +2 more sources

African Land Ecology: Opportunities and Constraints for Agricultural Development [PDF]

open access: yes
Current agriculture in Sub-Sahara Africa is undeveloped and the Green Revolution has left the continent largely untouched. Poor performance is often related to a number of socio-economic factors.
B. G. J. S. Sonneveld   +2 more
core  

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