Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Andrew H. Heggenstaller"'
Publikováno v:
Agronomy Journal. 103:655-662
Information about the interaction of harvesting and N fertilization on composition of warm-season grasses grown as biofuel feedstocks is limited. Our objective was to determine composition of warm-season grasses as influenced by N fertilization rates
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6149458c13da83b6b2cea928c3b22e4c
https://doi.org/10.2134/agronj2010.0374
https://doi.org/10.2134/agronj2010.0374
Publikováno v:
Crop Science. 49:2215-2224
Increased biomass productivity could be achieved through double-cropping if extended growth duration could be realized with minimal reductions in growth efficiency relative to sole-cropping. To test this hypothesis, functional growth analysis was use
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3ee42dfda19cb82906dcf0eae8ab9a28
https://doi.org/10.2135/cropsci2008.12.0709
https://doi.org/10.2135/cropsci2008.12.0709
Publikováno v:
Agronomy Journal. 101:1363-1371
Recent attention has focused on the use of perennial, warm-season grasses as renewable energy crops. The objective of this study was to assess the effects of N fertilization on partitioning of biomass and nutrients between above- and belowground plan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6f0f797d7a606886cf79b8cc956182fa
https://doi.org/10.2134/agronj2008.0225x
https://doi.org/10.2134/agronj2008.0225x
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
Publikováno v:
Crop Science. 47:1327-1335
Emerging markets for fuels and energy from crop biomass are creating new opportunities for redesigning agricultural systems for improved ecological function and energy-use effi ciency. Innovative bioconversion processes confi gured to recover key pla
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::14c5829fd02cd4a591da8c4b5d2121fa
https://doi.org/10.2135/cropsci2006.06.0406
https://doi.org/10.2135/cropsci2006.06.0406
Publikováno v:
Agriculture, Ecosystems & Environment. 116:280-288
Invertebrate seed predator communities were compared between conventionally managed maize/soybean and low-input maize/soybean/ triticale–alfalfa/alfalfa crop rotation systems using pitfall traps from July to October 2003 and 2004. Predation of gian
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::04884deb096d3a3522cb4024ee6464bc
https://doi.org/10.1016/j.agee.2006.02.018
https://doi.org/10.1016/j.agee.2006.02.018
Publikováno v:
Journal of Applied Ecology. 43:999-1010
Summary 1 Post-dispersal seed predation is an important source of mortality for arable weed populations that can potentially contribute to ecologically based management strategies. The extent to which cropping practices influence rates of seed predat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d04cdd7b9087da126f4d688103de709
https://doi.org/10.1111/j.1365-2664.2006.01198.x
https://doi.org/10.1111/j.1365-2664.2006.01198.x
Publikováno v:
Weed Science. 54:566-574
To better understand seed predation and enhance weed seed losses in arable fields, we developed a conceptual model that integrates seed dispersal, seed burial, and seed demand, the three processes that determine the dynamics of summer annual weed see
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::41b2a8ed57fcd289f52e23dacc1007e1
https://doi.org/10.1614/ws-05-067r.1
https://doi.org/10.1614/ws-05-067r.1
Autor:
Matt Liebman, Robert G. Hartzler, Paula R. Westerman, Andrew H. Heggenstaller, Philip M. Dixon, Fabian D. Menalled
Publikováno v:
Weed Science. 53:382-392
To improve understanding of relationships between crop diversity, weed management practices, and weed population dynamics, we used data from a field experiment and matrix models to examine how contrasting crop rotations affect velvetleaf. We compared
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8ad82bd973196ec4ea31c2453a11c5b9
https://doi.org/10.1614/ws-04-130r
https://doi.org/10.1614/ws-04-130r