Results 101 to 110 of about 309,187 (353)

Fertilization: trade-offs between manure abatement and plant productivity [PDF]

open access: yes, 2008
In 2005, 30% of the Flemish farms faced a manure excess, while at aggregated level still 9.7% of the emission rights were unused. This means that, despite the various possibilities, Flemish farmers do not succeed in an effective exchange of manure ...
Buysse, Jeroen   +5 more
core  

THE DETERMINATION OF POTASH IN MANURES. [PDF]

open access: yesJournal of the American Chemical Society, 1895
n ...
openaire   +3 more sources

Nitrogen Insertion via Asymmetric Condensation and Chirality Transfer: A Stereodivergent Entry to Cyanocyclopropanes

open access: yesAngewandte Chemie International Edition, Accepted Article.
The condensation of prochiral cyclobutanones and diphenylphosphinyl hydroxylamine is achieved under Brønsted acid catalysis. Interestingly, the competing aza‐Baeyer Villiger reaction is completely suppressed and the axially chiral oxime esters can be isolated in excellent yield and selectivity (up to 96% yield, up to 97:3 er).
Johannes Wahl   +4 more
wiley   +1 more source

THE ECONOMICS OF USING MANURE STORED UNDER TWO DIFFERENT SYSTEMS FOR CROP PRODUCTION BY SMALL-SCALE FARMERS IN KWAZULU-NATAL [PDF]

open access: yes
Several manure use options were analysed for profitability using results from research and farmer participatory trials that were conducted in the small-scale farming sector in KwaZulu-Natal, South Africa.
Mkhabela, Thulasizwe S.
core   +1 more source

Tillage Manure Managemen and Water Quality, April 2005 [PDF]

open access: yes, 2005
Tillage and manure application practices significantly impact surface and ground water quality in Iowa and other Midwestern states. Tillage and manure application that incorporates residue and disturbs soil result in higher levels of soil erosion and

core  

Multiple benefits of manure: the key to maintenance of soil fertility and restoration of depleted sandy soils on African smallholder farms [PDF]

open access: yes, 2008
Manure is a key nutrient resource on smallholder farms in the tropics, especially on poorly buffered sandy soils, due to its multiple benefits for soil fertility. Farmers preferentially apply manure to fields closest to homesteads (homefields), which are
Delve, R.J.   +3 more
core   +2 more sources

Does reduced usage of antibiotics in livestock production mitigate the spread of antibiotic resistance in soil, earthworm guts, and the phyllosphere? [PDF]

open access: yes, 2020
The overuse of antibiotics in animal husbandry is widespread and believed to significantly contribute to the selection of antibiotic resistance genes (ARGs) in animals.
Daniell, Tim   +5 more
core   +3 more sources

Utilização de cama sobreposta de suínos e sobressemeadura de leguminosas para aumento da produção e qualidade de pastagem natural Swine deep bedding amendment and legume sod-seeding to increase production and quality of natural pasture

open access: yesRevista Brasileira de Zootecnia, 2008
Este trabalho foi conduzido com o objetivo de verificar o efeito da fertilização com dois tipos de camas sobrepostas de suínos (CSS), à base de casca de arroz (CA) e maravalha (MA), sobre a produção de uma pastagem natural, com predomínio de Axonopus sp.
Paulo Hentz   +3 more
doaj   +1 more source

The Economics of Manure Utilization: Model and Application [PDF]

open access: yes
A model of manure utilization is developed and applied to four types of transportable manure. Model results highlight important response differences among manure types and generally illustrate the diseconomies of manure production. For example, as manure
Hauck, Larry M., Keplinger, Keith O.
core   +1 more source

Contribution of N from frequently chopped green manure to a succeeding crop of barley [PDF]

open access: yes, 2008
The aim of the present work was to study to what extent N in mulched green manure herbage contributes to spring barley grain yield the subsequent year. The green manure herbage was either chopped and left on stubble (GML) or removed (GMR).
Bakken, Anne Kjersti   +2 more
core  

Home - About - Disclaimer - Privacy