Soil Carbon and Physiological Responses of Corn and Soybean to Organic Amendments

被引:1
作者
Bowden, Chandra L. [1 ]
Evanylo, Gregory K. [2 ]
Zhang, Xunzhong [2 ]
Ervin, Erik H. [2 ]
Seiler, John R. [3 ]
机构
[1] Adv Learning Tutorials LLC, Washington, DC USA
[2] Virginia Tech, Dept Crop & Soil Environm Sci, Blacksburg, VA USA
[3] Virginia Polytech Inst & State Univ, Dept Forestry, Blacksburg, VA 24061 USA
基金
美国农业部;
关键词
SUPEROXIDE-DISMUTASE; SEWAGE-SLUDGE; TALL FESCUE; HUMIC-ACID; IMPACT; MANURE; MAIZE; CHLOROPHYLL; SENESCENCE; BIOSOLIDS;
D O I
暂无
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
Field research was conducted to assess the effects of organic and inorganic soil amendments on soil humified carbon content and plant physiological properties. Long term applications of various types and rates of compost, poultry litter and inorganic fertilizer were assessed for their effects on corn [Zea mays (L.) Pioneer 31G20] and soybean [Glycine max (l.) Delta Pine 4933RR] grown in a Virginia (United States) Piedmont soil in 2004 and 2005. Treatment differences in leaf antioxidant activity were only observed in the corn plots. Corn fertilized with amendments supplying the crop's nitrogen needs, regardless of the source, had greater leaf nitrogen (+29%), chlorophyll (+33%), and protein contents (+37%), lower superoxide dismutase (-29%) and ascorbate peroxidase (-17%) activities, and lower malondialdehyde (-33%) contents than the control and low nitrogen treatments. Yield was strongly related to midseason leaf nitrogen contents (R-2=0.87, p<0.0001) and not with soil humified carbon (R-2=0.02, p=0.0543). Soybean grown in the organically amended soil had higher yields (9-21% increase), protein contents (4-9% increase) and seed weights (5-14% increase) than the inorganically fertilized and unfertilized treatments. Improvements in soybean yield and seed quality were due to organic amendment benefits other than plant available water or nutrient supply.
引用
收藏
页码:162 / 173
页数:12
相关论文
共 46 条
[41]  
Zhang X, 2005, J RESIDUALS SCI TECH, V2, P173
[42]   Impact of Biosolids on Hormone Metabolism in Drought-Stressed Tall Fescue [J].
Zhang, Xunzhong ;
Ervin, E. H. ;
Evanylo, G. K. ;
Haering, K. C. .
CROP SCIENCE, 2009, 49 (05) :1893-1901
[43]   Cytokinin-containing seaweed and humic acid extracts associated with creeping bentgrass leaf cytokinins and drought resistance [J].
Zhang, XZ ;
Ervin, EH .
CROP SCIENCE, 2004, 44 (05) :1737-1745
[44]   Physiological effects of liquid applications of a seaweed extract and a humic acid on creeping bentgrass [J].
Zhang, XZ ;
Ervin, EH ;
Schmidt, RE .
JOURNAL OF THE AMERICAN SOCIETY FOR HORTICULTURAL SCIENCE, 2003, 128 (04) :492-496
[45]   Antioxidant response to hormone-containing product in Kentucky bluegrass subjected to drought [J].
Zhang, XZ ;
Schmidt, RE .
CROP SCIENCE, 1999, 39 (02) :545-551
[46]   Hormone-containing products' impact on antioxidant status of tall fescue and creeping bentgrass subjected to drought [J].
Zhang, XZ ;
Schmidt, RE .
CROP SCIENCE, 2000, 40 (05) :1344-1349