Zobrazeno 1 - 10
of 298
pro vyhledávání: '"D, Haskett"'
Publikováno v:
Frontiers in Environmental Science, Vol 7 (2019)
Agriculture must raise productivity while addressing climate change in order to ensure the food security of a growing population. Adding fossil fuel energy to the agricultural system can increase productivity through the use of manufactured fertilize
Externí odkaz:
https://doaj.org/article/5cd4df84ca7d4fdda26e8a730f4085aa
Autor:
Elena T. Broaddus, Craig Bakker, Jonathan D. Haskett, Cindy L. Parker, Sauleh Siddiqui, Roni A. Neff, Benjamin F. Hobbs, Benjamin F. Zaitchik
Publikováno v:
Agricultural Systems. 164:165-184
Food insecurity is a complex phenomenon with biophysical, climatic, economic, and infrastructure facets. Despite this understanding, there are few stakeholder-based modelling tools that can capture these dynamics and thereby evaluate the direct and i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2af9f57839f6d057969c4e8e73be607d
https://doi.org/10.1016/j.agsy.2018.04.005
https://doi.org/10.1016/j.agsy.2018.04.005
Publikováno v:
Frontiers in Environmental Science, Vol 7 (2019)
Faidherbia albida trees have an unusual phenology, leafing out during the dry season and shedding leaves at the start of the rainy season. When integrated into agroforestry cropping systems, they provide substantial sustainability benefits, including
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::23bf0c5593b715fb772d889648499885
https://doi.org/10.3389/fenvs.2019.00146
https://doi.org/10.3389/fenvs.2019.00146
Publikováno v:
Ecological Applications. 11:1194-1205
We studied crop harvested yield, as recorded in national agricultural statistics, to estimate net primary production (NPP) in agricultural regions where most of the land area is sown with a few, well-studied crops. We estimated the magnitudes and int
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4f3bd2ce444fe37fd04ac7d829ff8410
https://doi.org/10.1890/1051-0761(2001)011[1194:nppous]2.0.co
https://doi.org/10.1890/1051-0761(2001)011[1194:nppous]2.0.co
Autor:
Jonathan D. Haskett
Publikováno v:
Journal of Natural Resources and Life Sciences Education. 30:23-26
Undergraduate science instructors are concerned that the traditional lecture centered approach may not be the most effective. The objective of this work was to integrate alternative teaching methods into a small, upper-division course that had previo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e4233d33a5364fca298db0b2defc2a32
https://doi.org/10.2134/jnrlse.2001.0023
https://doi.org/10.2134/jnrlse.2001.0023
Publikováno v:
Ecological Modelling. 135:265-277
The anthropogenic increase in radiatively active gases in the atmosphere has been well documented, and there is evidence that suggests an impact of this increase on the earth's climate. Agriculture is vulnerable to climatic changes, and estimating th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e552499772ca921236a6c0552eb2e9f8
https://doi.org/10.1016/s0304-3800(00)00369-0
https://doi.org/10.1016/s0304-3800(00)00369-0
Publikováno v:
Agronomy Journal. 89:167-176
Increases in atmospheric CO 2 concentration are likely to have a significant impact on the climate and to affect the growth and development of crops. The effect of climate change on crops has to be assessed for large areas to provide information for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cfab89640ce54c4dd6081501cbc104c7
https://doi.org/10.2134/agronj1997.00021962008900020004x
https://doi.org/10.2134/agronj1997.00021962008900020004x
Publikováno v:
Agricultural Systems. 50:209-225
Many models of leaf photosynthesis have been proposed but there have been few attempts to compare them and determine their adequacy for various purposes. Three of the most popular models of leaf photosynthesis were compared quantitatively and qualita
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::85715aeaca2a4d4cb2eb2a93f34391fa
https://doi.org/10.1016/0308-521x(94)00051-r
https://doi.org/10.1016/0308-521x(94)00051-r
Publikováno v:
Agricultural Systems. 48:73-86
In order to use mechanistic crop models for regional estimates of crop yield it is often necessary to include soil parameters which may not be readily available from published sources or which may be at the wrong level of resolution. A method is prop
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d1979f93d3f78b983cd66de595c560bf
https://doi.org/10.1016/0308-521x(95)93646-u
https://doi.org/10.1016/0308-521x(95)93646-u
Autor:
Jonathan D. Haskett
Publikováno v:
Soil Science Society of America Journal. 59:179-184
The system of soil classification used in the U.S. system of soil taxonomy has been criticized as being based on the flawed 19th century logic of John Stuart Mill. Mill postulated that objects have self-evident properties that will be apparent to any
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aece6fd075f55e61bfe1faa42b8a0f21
https://doi.org/10.2136/sssaj1995.03615995005900010027x
https://doi.org/10.2136/sssaj1995.03615995005900010027x