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44篇 您的检索式：作者名="Varvel G"

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	题名	作者	年代	出处	被引量
1	Comparison of corn and switchgrass on marginal soils for bioenergy显示文摘	Varvel G E Vogel K P Mitchell R B	2008	Biomass and Bioenergy2008，32，：	1
2	Light reflectance compared with other nitrogen stress measurements in corn leaves 显示文摘	Blackmer T M Schepers J S Varvel G E	1994	Agronomy Journal1994，86，：	1
3	Nitrogen and water management strategies to reduce nitrate leaching under irrigated maize显示文摘	Schepers J S Varvel G E Watts D G	1995	Journal of Contaminant Hydrology1995，20，：	1
4	Evaluation of cultivar and nitrogen management options for malting barley显示文摘	Varvel G E Severson R K		0，，03：	1
5	Analysis of aerial photography for nitrogen stress within corn fields显示文摘	Blackrmer T M J S Schepers G E Varvel	1996	Agron J1996，88，：	1
6	Monitoring soil quality to assess the sustainability of harvesting corn stover显示文摘	Karlen D L Varvel G E Johnson J M F	2011	Agronomy Journa 12011，103，1：	1
7	Nitrogen deficiency detection using short-wave radiation from irrigated corn canopies显示文摘	Blackmer T M Schepers J S Varvel G E	1996	Agronomy Journal1996，88，：	1
8	Nitrogen and water management strategies to reduce nitrate leaching under irrigated maize显示文摘	Schepers J S Varvel G E Watts D G	1995	Journal of Contaminant Hydrology1995，20，：	1
9	Light re- flectance compared with other nitrogen stress meas- urements in corn leaves显示文摘	Blackmer T M Schepers J S Varvel G E	1994	Agronomy Journal1994，86，：	1
10	A simple performance-based index for assessing multiple agroecosystem functions显示文摘	Liebig M A Varvel G Doran J	2001	Agronomy Journal2001，93，2：	1
11	Light reflectance compared with other nitrogen stress measurements in com leaves显示文摘	Blackmer T M J S Schepers G E Varvel	1994	Agro J1994，86，：	1
12	Nitrogen deficiency detection using reflected shortwave radiation from irrigated corn canopies显示文摘	Blackmer T M Schepers J S Varvel G E	1996	Agron J1996，88，：	1
13	Light reflectance compared with other nitrogen stress measurements in corn leaves显示文摘	Blackmer T M Schepers J S Varvel G E	1994	Agronomy Journal1994，86，6：	1
14	Light reflectance compared with other nitrogen stress measurements in corn leaves 显示文摘	Blackmer T M Schepers J S Varvel G E	1994	Agronomy Journal1994，86，6：	1
15	A simple performance-based index for assessing multiple agroecosystem functions显示文摘	Liebig M A Varvel G Doran J W		0，，：	1
16	Monoculture and rotation system effects on precipit-ation use efficiency of corn显示文摘	Varvel G E	1994	Agronomy Journal1994，86，：	1
17	Ability for in-season correction of nitrogendeficiency in corn using chlorophyll meters显示文摘	Varvel G E Schepers J S Francis D D	1997	Soil Science Society of American Journal1997，61，：	1
18	Light reflectance compared with other nitrogen stress measurements in corn leaves显示文摘	Blackmer T M Schepers J S Varvel G E	1994	Agron J1994，86，：	1
19	Nitrogen deficiency detection using reflected short wave radiation from irrigated corn canopies显示文摘	Blaekmer T M Schepers J S Varvel G E	1996	Agronomy Journal1996，88，1：	1
20	Analysis of aerial photography for nitrogen stress within corn fields显示文摘	Blackmer T M Schepers J S Varvel G E	1996	Agronomy Journal1996，88，5：	1

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