Results 91 to 100 of about 309,187 (353)

Learning from a long-term crop rotation experiment [PDF]

open access: yes, 2005
A crop rotation experiment was established in 1996/97 at three locations representing differ-ent soil types and climates. Three factors were tested: i) crop rotation with different propor-tions of N2-fixing crops, ii) with and without a catch crop, and ...
Askegaard, Margrethe   +2 more
core  

Análise técnica de fontes de nutrientes associadas a sistemas de preparo do solo Nutrient sources associated with soil tillage systems: technical aspects

open access: yesRevista Brasileira de Ciência do Solo, 2008
Os dejetos têm sido utilizados como fontes orgânicas de nutrientes em diferentes condições edafoclimáticas, culturas e sistemas de preparo do solo. Os efeitos de seu uso continuado são mais bem avaliados pela integração de diferentes atributos de solo e ...
Carla Maria Pandolfo   +3 more
doaj   +1 more source

Antibiotic Resistance Genes in Antibiotic-Free Chicken Farms

open access: yesAntibiotics, 2020
Rising concern about the use of antibiotics in food production has resulted in many studies on the occurrence of antibiotic resistance genes (ARGs) in animal-associated bacterial communities.
Yuhong Liu   +5 more
doaj   +1 more source

The Loss of Nitrogen in Manures [PDF]

open access: yesScientific American, 1893
n ...
Muntz, A., Girard, A. C.-H.
openaire   +1 more source

Understanding well‐being and safety for First Nations children and young people in the Riverland—Engaging with metic knowledge via a capability approach

open access: yesAustralian Journal of Social Issues, EarlyView.
Abstract Aboriginal culture is both a strength and a protective factor for Aboriginal children; yet, we continue to see disparities in education, health and well‐being outcomes. To improve outcomes for Aboriginal children and families, local cultural ways of knowing, being and doing need to be incorporated into policy and practice.
Michelle Jones   +5 more
wiley   +1 more source

Productivity of pre-modern agriculture in the Cucuteni-Trypillia area [PDF]

open access: yesarXiv, 2015
(Abridged) We present palaeoeconomy reconstructions for pre-modern agriculture, with the Cucuteni-Trypillia Cultural unity (5,400-2,700 BC, modern Ukraine, Moldova and Romania) as example. The starting point of our analysis is the palaeodiet structure suggested by archaeological data, stable isotope analyses of human remains, and palynology.
arxiv  

Substrates, emergence and seedling quality of Hymenaea stigonocarpa Mart. (Jatoba) in protected cultivation

open access: yesBioscience Journal, 2018
Because the consumption and use of native fruit, there is need for research on strategies for maintenance propagation of the species. Jatoba is a fruitful tree of great importance to the Brazilian fauna, cuisine and reclamation and thus is essential to ...
Léia Carla dos Santos Rodrigues Larson   +4 more
doaj   +1 more source

Photochemical Conversion of Indazoles into Benzimidazoles

open access: yesAngewandte Chemie International Edition, Accepted Article.
Fragment‐based drug discovery relies on preparing diverse libraries of advanced building blocks, often incorporating heteroaromatic motifs. Altering the core of heteroaromatics to maximise library diversity typically requires de novo synthesis of each system. This can be often challenging when specific substitution patterns are needed.
Daniele Leonori   +5 more
wiley   +1 more source

Spring barley yield and nitrogen recovery after application of peat manure and pig slurry [PDF]

open access: yes, 2006
The effectiveness of peat manure, manufactured of pig slurry and moderately humified Sphagnum peat (slurry:peat ca. 1:1.5 v/v), as nitrogen (N) source for spring barley was investigated in a four.year field experiment on a clay loam soil in south-western
Mattila, Pasi K.
core   +2 more sources

Photocatalytic Generation of a Ground‐State Electron Donor through Water Activation

open access: yesAngewandte Chemie International Edition, Accepted Article.
Electron donors that can be excited to higher energy states through light absorption can achieve oxidation potentials as low as ‐3.0 V (vs. SCE). However, ground‐state organic electron transfer reagents operating at such potentials remain underdeveloped, often necessitating multi‐step syntheses and elevated reaction temperatures for activation.
Maxim-Aleksa Wiethoff   +2 more
wiley   +1 more source

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