Results 191 to 200 of about 461,225 (394)

Phosphorus fractions status of representative agricultural fields in North Carolina

open access: yesJournal of Environmental Quality, EarlyView.
Abstract Most agricultural soils in North Carolina have high levels of available phosphorus (P), yet little is known about other accumulated P fractions and their associated environmental risks. This study characterized soil P fractions through sequential chemical fractionation of 391 samples (0–10 cm and 10–20 cm) collected from 57 counties across ...
Andria Paula Lima   +3 more
wiley   +1 more source

Lucerne (Medicago sativa) or grass-clover as cut-and-carry fertilizers in organic agriculture [PDF]

open access: yes, 2013
On-farm nitrogen fixation is a driving force in organic agriculture. The efficiency with which this nitrogen is used can be increased by using lucerne (Medicago sativa) or grass-clover directly as sources of fertilizer on arable land: cut-and-carry ...
Burgt, Geert-Jan H.M.   +3 more
core  

Can conservation drainage practices contribute to climate change mitigation?

open access: yesJournal of Environmental Quality, EarlyView.
Abstract Conservation drainage practices can mitigate water quality impacts of subsurface drainage, but their potential for climate change mitigation remains poorly understood. We summarized processes by which tile‐drained croplands impact climate and assessed potential of conservation drainage practices to alter emissions of the greenhouse gases ...
Steven J. Hall   +4 more
wiley   +1 more source

Liebig Review: Legume–Rhizobium Symbiosis Under Selenium Fertilization: A Unique Dual Function in the Plant–Soil System

open access: yesJournal of Plant Nutrition and Soil Science, EarlyView.
ABSTRACT Background Selenium (Se) plays a vital role as a beneficial element in promoting the production of leguminous plants. It influences legume quality by improving crop nutritive value and contributing to human and animal health. Literature Review This review is timely, as there are gaps in understanding Se–rhizobia interactions in legumes, which ...
Muna Ali Abdalla   +2 more
wiley   +1 more source

Poultry Manure Management and Utilization [PDF]

open access: yes, 1990
PDF pages ...
Bermudez, Alex J., Naber, Edward C.
core  

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