Environmentally adjusted productivity growth and shadow prices for dairy farms
Canadian Journal of Agricultural Economics/Revue canadienne d'agroeconomie, EarlyView.Abstract We estimate the environmentally adjusted productivity growth and shadow price for Ontario dairy farms. We use an input‐oriented directional distance function and farm‐level data from 2000 to 2020. First, we find that while GHG emissions per cow increase with higher milk yields, emission intensity decreases as milk yield per cow increases.
Bibek Dahal +2 more
wiley +1 more source
Acquired resistance to bacterial infection in insects. [PDF]
Bacteriol Rev, 1961 WAGNER RR.
europepmc +1 more source
Sphagnum sect. Squarrosa (Sphagnaceae, Musci) en España
, 2001 Estrella Munín, Esther Fuertes Lasala
openalex +1 more source
A new species of Simaba sect. Grandiflorae (Simaroubaceae) from Jalapão region, Tocantins, Brazil
, 2015 Marcelo Fernando Devecchi +1 more
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1165. Echinacea purpurea (L.) Moench
Curtis's Botanical Magazine, EarlyView.Summary Echinacea purpurea (L.) Moench (Compositae: Heliantheae: Zinniinae) is described and illustrated with a colour plate and black and white text figure. An introduction to the history of the appearance of this species in the Magazine appears in brief, together with comments on the treatment of the genus, and the available generic revisions.
Nicholas Hind +2 more
wiley +1 more source
Two new species of Centaurea sect. Microlophus (Asteraceae, Cardueae) from Iran
Massoud Ranjbar +2 more
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1162. Symphyotrichum oolentangiense (Riddell) G.L. Nesom
Curtis's Botanical Magazine, EarlyView.Summary Symphyotrichum oolentangiense (Riddell) G.L. Nesom (Compositae: Astereae: Symphyotrichinae) is described and illustrated. A very brief biographical note of John Leonard Riddell, the collector and author of the species, is offered. Notes are provided for the species' cultivation, propagation, likely pests and diseases, and availability.
Nicholas Hind, Deborah Lambkin
wiley +1 more source
The behavior of isolated hearts of the grasshopper, Chortophaga viridifasciata, and the moth, Samia walkeri, in solutions with different concentrations of sodium, potassium, calcium, and magnesium. [PDF]
J Gen Physiol, 1954 BARSA MC.
europepmc +1 more source
Agave mayo (sect. Littaea, Asparagaceae), a new species from northern Sinaloa, Mexico
J. Antonio Vázquez-García +4 more
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