Results 21 to 30 of about 2,072,958 (304)

Efeito da moagem do solo no teor de fósforo disponivel por Mehlich-1, resina em esferas e em lâmina Effect of soil grinding on available phosphorus content by Mehlich-1, bead and membrane ion exchange resins

Revista Brasileira de Ciência do Solo, 2008
A moagem intensa de amostras de solo é necessária à utilização do método da resina de troca iônica, para a determinação do P disponível, adotado em alguns laboratórios no Brasil.
Marcelo Vieira Rolim, Roberto Ferreira de Novais, Flancer Novais Nunes, Víctor Hugo Alvarez V.   +3 more
doaj   +1 more source

Boron extraction and vertical mobility in Paraná State oxisol, Brazil Extração e mobilidade vertical de boro em latossolo vermelho eutroférrico no Estado do Paraná

Revista Brasileira de Ciência do Solo, 2009
The deficiency or excess of micronutrients has been determined by analyses of soil and plant tissue. In Brazil, the lack of studies that would define and standardize extraction and determination methods, as well as lack of correlation and calibration ...
Waldemar de Oliveira Neto, Antonio Saraiva Muniz, Maria Anita Gonçalves da Silva, Cesar de Castro, Clovis Manuel Borkert   +4 more
doaj   +1 more source

Role of soil biota in the formation of soil fertility in agricultural landscapes of Akmola region, Kazakhstan [PDF]

Caspian Journal of Environmental Sciences
Biofertilizers are needed to restore soil fertility. Long-term use of chemical fertilizers causes soil degradation and affects crop yield. Biofertilizers increase the soil's water-holding capacity and add nutrients like nitrogen, vitamins, and proteins ...
Aigerim Tulesheva, Bolat Yessimov
doaj   +1 more source

Comparison of X-ray Fluorescence (XRF) and Atomic Absorption Spectrometry (AAS) Results for an Environmental Assessment at a Mercury Site in Kyrgyzstan

Applied Sciences, 2022
Khaidarkan, Batken Province, Kyrgyzstan is home to one of the world’s largest and last primary mercury mines. Doctors without Borders (MSF) and the Ministry of Health (MOH) of Kyrgyzstan have found that the Batken region has an elevated rate of non ...
Sandra Spearman, Casey Bartrem, Ainash A. Sharshenova, Kasiet S. Salymbekova, Makhmud B. Isirailov, Saparbai A. Gaynazarov, Roman Gilmanov, Ian H. von Lindern, Margrit von Braun, Gregory Möller   +9 more
doaj   +1 more source

Soil structural degradation and nutrient limitations across land use categories and climatic zones in Southern Africa [PDF]

, 2019
Although soil degradation is a major threat to food security and carbon sequestration, our knowledge of the spatial extent of the problem and its drivers is very limited in Southern Africa.
Kihara, Job, Mponela, Powell, Ndengu, Gift, Sila, Andrew M., Sileshi, Gudeta W., Tamene, Lulseged, Tondoh, Jérôme E.   +6 more
core   +1 more source

Relationship between the mass of organic matter and carbon in soil

Brazilian Archives of Biology and Technology, 2008
The quantity of soil organic matter (SOM) was estimated through the determination of soil organic carbon (SOC) times a factor, which assumes that 58% of the SOM was formed by carbon.
Silmara R. Bianchi, Mario Miyazawa, Edson L. de Oliveira, Marcos Antonio Pavan   +3 more
doaj   +1 more source

Physical soil quality indicators for monitoring British soils [PDF]

, 2016
The condition or quality of soils determines its ability to deliver a range of functions that support ecosystem services, human health and wellbeing. The increasing policy imperative to implement successful soil monitoring programmes has resulted in the ...
Corstanje, Ronald, Deeks, Lynda, Holman, Ian P., Kechavarzi, Cédric, Mercer, Theresa G., Newell-Price, Paul, Rickson, R. J., Waine, Toby W.   +7 more
core   +1 more source

Soil - Plant Nutrient Correlation Analysis of Maize Varieties at the Guinea Savannah [PDF]

, 2018
Field trials were conducted during the rainy season of 2008 and 2009 at the Institute for Agricultural Research farm in Samaru (110 11' N, 70 38'E) within the northern Guinea savanna ecological zone of Nigeria to evaluate correlation relationships among ...
T, O. B. (Olowookere), T, O. G. (Oyerinde)   +1 more
core  

Mycobacterial cell division arrest and smooth‐to‐rough envelope transition using CRISPRi‐mediated genetic repression systems

FEBS Open Bio, EarlyView.
CRISPRI‐mediated gene silencing and phenotypic exploration in nontuberculous mycobacteria. In this Research Protocol, we describe approaches to control, monitor, and quantitatively assess CRISPRI‐mediated gene silencing in M. smegmatis and M. abscessus model organisms.
Vanessa Point, Wafaa Achache, Janïs Laudouze, Eliana Sepulveda Ramos, Mickaël Maziero, Céline Crauste, Stéphane Canaan, Pierre Santucci   +7 more
wiley   +1 more source

Laser-induced breakdown spectroscopy as an analytical tool for total carbon quantification in tropical and subtropical soils: evaluation of calibration algorithms

Frontiers in Soil Science
The demand for efficient, accurate, and cost-effective methods of measuring soil carbon (C) in agriculture is growing. Traditional approaches are time consuming and expensive, highlighting the need for alternatives.
Diego Victor Babos, Wesley Nascimento Guedes, Vitor Silveira Freitas, Fernanda Pavani Silva, Fernanda Pavani Silva, Marcelo Larsen de Lima Tozo, Marcelo Larsen de Lima Tozo, Paulino Ribeiro Villas-Boas, Ladislau Martin-Neto, Débora Marcondes Bastos Pereira Milori   +9 more
doaj   +1 more source