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- Ohno, Tsutomu; He, Zhongqi; Tazisong, Irenus A.; Senwo, Zachary N.
- Soil science 2009 v.174 no.12 pp. 652
- crop production; agricultural soils; silt loam soils; soil organic matter; humic acids; fulvic acids; conventional tillage; no-tillage; fertilizer application; ammonium nitrate; poultry manure; fertilizer rates; application rate; cropping systems; Gossypium hirsutum; cotton; Zea mays; corn; Secale cereale; rye; crop rotation; spectroscopy; humic substances; stubble tillage; Alabama
- ... The characterization of organic matter in agroecosystems is important because of its involvement in many important soil ecosystem processes. Humic acid, fulvic acid, and water-extractable organic matter from a 9-year agroecosystem study investigating the effects of tillage, cropping system, and N source was characterized using multidimensional fluorescence spectroscopy with parallel factor analysi ...
- He, Zhongqi; Endale, Dinku M.; Schomberg, Harry H.; Jenkins, Michael B.
- Soil science 2009 v.174 no.12 pp. 687
- poultry manure; soil amendments; long term experiments; agricultural soils; phosphorus; zinc; copper; manganese; soil fertility; soil chemistry; soil nutrients; no-tillage; conservation tillage; Georgia
- ... Poultry litter (PL) is an inexpensive and effective source of plant nutrients. However, overapplication could result in phosphorus (P) and heavy metal accumulation in soils. A field experiment evaluating PL application to a Cecil soil used for cotton and corn production has been maintained for 10 years. At the end of the cotton phase (i.e., the first 5 years), PL annually applied at 4.5 Mg ha did ...