Zobrazeno 1 - 10
of 14
pro vyhledávání: '"David N. Sundberg"'
Autor:
Richard Shibles, David N. Sundberg
Publikováno v:
Plant Production Science, Vol 1, Iss 1, Pp 3-7 (1998)
Soybean redistributes or 201C;mobilizes” a large amount of its vegetative nitrogen in support of synthesis of seed storage protein. Most of this is from leaf tissue. Our objective was to elucidate the relationship between potentially mobilizable le
Externí odkaz:
https://doaj.org/article/153382020edc4c3d80bd2a944716f2c4
Autor:
Teresita Chua, Robert P. Anex, Michael L. Thompson, Meghann Jarchow, David N. Sundberg, Shashi Dhungel, Matt Liebman, Ranae Dietzel
Publikováno v:
GCB Bioenergy. 7:57-71
Cellulosic bioenergy production provides opportunities to utilize a range of cropping systems that can enhance the multifunctionality of agricultural landscapes. In a 9-ha field experiment located on fertile land in Boone County, IA, USA, we directly
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d0613ebeb5c1cbf94c03a29fdb3616e
https://doi.org/10.1111/gcbb.12096
https://doi.org/10.1111/gcbb.12096
Autor:
A Heggenstaller, Philip M. Dixon, Fabian D. Menalled, Zachariah Miller, David N. Sundberg, Matt Liebman, Paula R. Westerman, Carol L. Williams, Adam S. Davis
Publikováno v:
Weed Research. 54:293-306
Summary Weed seeds in and on the soil are the primary cause of weed infestations in arable fields. Previous studies have documented reductions in weed seedbanks due to cropping system diversification through extended rotation sequences, but the impac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6c923724442eb629cc6cbaad4c76acc
https://doi.org/10.1111/wre.12069
https://doi.org/10.1111/wre.12069
Publikováno v:
Renewable Agriculture and Food Systems. 28:220-233
Cropping systems that include forage legumes and small grains in addition to corn (Zea mays L.) and soybean [Glycine max (L.) Merr.] can achieve similar or higher crop productivity and economic return than simpler corn–soybean rotations. We hypothe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9643ec1a1cee73c9fed3ba6b539f0850
https://doi.org/10.1017/s1742170512000142
https://doi.org/10.1017/s1742170512000142
Autor:
Matt Liebman, Paula R. Westerman, David N. Sundberg, C L Williams, Jaclyn K. Borza, Brent J. Danielson
Publikováno v:
Weed Research. 49:439-447
Summary To improve understanding of over-winter weed seed predation in arable fields, we used data from winter exclosure trials to determine the amount of predation and the influence of crop habitats on predation of Abutilon theophrasti and Setaria f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c3cac327b5ce0381384da86214e10a4
https://doi.org/10.1111/j.1365-3180.2009.00715.x
https://doi.org/10.1111/j.1365-3180.2009.00715.x
Publikováno v:
Agronomy Journal. 100:1740-1748
Double-crop systems have the potential to generate additional feedstocks for bioenergy and livestock utilization, and also to reduce NO 3 -N leaching relative to sole-crop systems. Field studies were conducted near Ames, IA, during 2005-2007 to evalu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68bcc10f50cefeda2330035d77fbfee9
https://doi.org/10.2134/agronj2008.0087
https://doi.org/10.2134/agronj2008.0087
Autor:
Fabian D. Menalled, David N. Sundberg, Craig A. Chase, Lance R. Gibson, Paula R. Westerman, Adam S. Davis, Robert G. Hartzler, Andrew H. Heggenstaller, Philip M. Dixon, Matt Liebman
Publikováno v:
Agronomy Journal. 100:600-610
We conducted a 9-ha field experiment near Boone, IA, to test the hypothesis that yield, weed suppression, and profit characteristics of low-external-input (LEI) cropping systems can match or exceed those of conventional systems. Over a 4-yr period, w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a905aa223f29e475a36708368655c2ca
https://doi.org/10.2134/agronj2007.0222
https://doi.org/10.2134/agronj2007.0222
Autor:
Matt Liebman, David N. Sundberg
Publikováno v:
Weed Science. 54:340-345
Residues of legume crops used to increase soil fertility may also serve as sources of phytotoxins that can suppress the germination and early growth of weed and crop species. To test the hypothesis that weed and crop susceptibility to extracts of red
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::126a80521e24d38767bead36e2237e29
https://doi.org/10.1614/ws-05-54.2.340a
https://doi.org/10.1614/ws-05-54.2.340a
Autor:
Douglas D. Buhler, Keith A. Kohler, Cynthia A. Cambardella, David N. Sundberg, Tom L. Richard, Matt Liebman, Fabian D. Menalled
Publikováno v:
Weed Science. 52:365-375
as synthetic fertilizer. Soil organic matter, P, K, and early-season NO3-N levels were greater in the (1) compost system. The N concentration of velvetleaf shoots, the P concentration of giant foxtail and common waterhemp shoots, and the K concentrat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::77d1030a9412138869cd69d5e4ab6b98
https://doi.org/10.1614/ws-03-094r
https://doi.org/10.1614/ws-03-094r
