Results 181 to 190 of about 461,225 (394)
Fall‐applied manure can conserve excess soil‐profile inorganic‐N for the subsequent cropping year
Journal of Environmental Quality, EarlyView.Abstract To investigate dairy manure urea fertilizer interactions in cropped soils of the semiarid‐West, we fall‐applied and incorporated (0–0.3 m) soil urea‐N (FertN) rates of 10 (N0), 45 (N1), and 80 mg N kg−1 (N2), co‐applied with either no manure or 86 Mg ha−1 (dry wt.) stockpiled dairy manure.
Rodrick D. Lentz, Jim A. Ippolito
wiley +1 more source
MANURE VALUE AND LIVEWEIGHT SWINE DECISIONS [PDF]
Produced as a joint product, economic theory suggests that manure value could influence livestock management decisions such as herd size and optimal market weights. This study examines the concept of manure and its connection with optimal replacement age
Hoag, Dana L., Roka, Fritz M.
core +1 more source
PENGUJIAN BEBERAPA METODE PEMBUATAN BIOAKTIVATOR GUNA PENINGKATAN KUALITAS PUPUK ORGANIK CAIR
Agritech, 2015 This research is aimed to find out the method of bio activator process and the best basic material used to produce a good qualified POC. This research was done in integrated laboratory of Muhammadiyah University of Purwokerto from April 2013 to August ...
Aminah Sarwa Endah +2 more
doaj
Testing Wisconsin P index assessments across cropping systems
Journal of Environmental Quality, EarlyView.Abstract Managing agricultural runoff phosphorus (P) often requires understanding management effects on both dissolved P (DP) and particulate (sediment‐bound) P (PP). The Wisconsin P index (WPI) allows producers to assess land management effects on runoff P by estimating annual P losses in mass per unit area.
Laura Good +3 more
wiley +1 more source
Importance of Cost Offsets for Dairy Farms Meeting a Nutrient Application Standard [PDF]
The U.S. Environmental Protection Agency requires concentrated animal feeding operations to develop and implement a comprehensive nutrient management plan.
Agapoff, Jean, Ribaudo, Marc
core +4 more sources
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
wiley +1 more source
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
core +1 more source
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
core +1 more source