Results 151 to 160 of about 355,291 (362)
A CHICK GROWTH FACTOR IN COW MANURE
, 1948 H.R. Bird, Max Rubin, A.C. Groschke
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Carbon Dioxide Production in Animal Houses: A literature review [PDF]
, 2008 This article deals with carbon dioxide production from farm animals; more specifically, it addresses the possibilities of using the measured carbon dioxide concentration in animal houses as basis for estimation of ventilation flow (as the ventilation ...
Aarnink, A.J.A. +6 more
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Journal of Environmental Quality, EarlyView.Abstract Biochar application to soil has been promoted to mitigate climate change by reducing greenhouse gas (GHG) emissions, yet significant uncertainty exists in quantifying soil nitrous oxide (N2O) emissions from biochar‐amended soils. We evaluated soil N2O emissions from soils amended with biochar prepared from diverse agricultural and forest ...
Barsha Sharma +5 more
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NITROGEN-ASSIMILATING ORGANISMS IN MANURE [PDF]
, 1917 H. L. Fulmer, E. B. Fred
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THE IMPACT OF MANURE PRODUCTION RIGHTS ON CAPITAL INVESTMENT IN THE DUTCH PIG SECTOR [PDF]
In this paper the effect of manure production rights on investment decisions of Dutch pig farmers is examined. A dynamic optimization model of investment that explicitly takes zero investments into account is augmented by a constraint on production ...
Gardebroek, Cornelis
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Phosphorus fractions status of representative agricultural fields in North Carolina
Journal 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
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Journal für Kulturpflanzen, 2015 175 soil samples from pot and field experiments with different types of organic (farmyard manure, meat and bone meal, bone meal) and mineral fertilization were used to evaluate the potential of a method to estimate relative shares of soluble organic P in
Raghad Shwiekh +3 more
doaj
Lucerne (Medicago sativa) or grass-clover as cut-and-carry fertilizers in organic agriculture [PDF]
, 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
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