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Full-Text Articles in Life Sciences
Soil Management And Nitrogen Dynamics In Burley Tobacco Rotations, Congming Zou
Soil Management And Nitrogen Dynamics In Burley Tobacco Rotations, Congming Zou
Theses and Dissertations--Plant and Soil Sciences
Agronomic practices, including tillage, crop rotation and N fertilization, have been developed to efficiently manage soil N dynamics and crop N nutrition. These practices can affect soil organic carbon (SOC) and soil total nitrogen (STN) sequestration, and consequently influence soil nitrogen mineralization (SNM) and crop N nutrition. However, little research has been systematically and simultaneously conducted to examine the effect of agronomic management on (1) SOC and STN stocks; (2) SNM; and (3) crop N nutrition. Burley tobacco (Nicotiana tobacum L.) is a N demanding crop and subject to inefficiency in N fertilization. Moreover, conservation tillage and rotation have been …
Limitations And Benefits To Cultivating Tobacco, Edwin L. Ritchey, Gary K. Palmer
Limitations And Benefits To Cultivating Tobacco, Edwin L. Ritchey, Gary K. Palmer
Plant and Soil Sciences Research Report
Historically, between-row cultivation for weed control has been an integral part of tobacco production. In one season, a grower might perform five or more cultivations and several hand weeding operations for adequate weed control. Early herbicide chemistries would control some weeds, but not all, forcing the producer to cultivate and hand weed. The development of better herbicides improved the range of weeds controlled, sometimes to the point that cultivation for weed control was not warranted. Many producers are so accustomed to cultivating they have forgotten why cultivation was necessary. The decision to cultivate should largely be based on the presence …
Effect Of Tray Type And Tray Covering On Wicking Speed, Germination, And Spiral Rooting Of Tobacco, William A. Bailey, Bill Pitt
Effect Of Tray Type And Tray Covering On Wicking Speed, Germination, And Spiral Rooting Of Tobacco, William A. Bailey, Bill Pitt
Plant and Soil Sciences Research Report
Poor tray wicking and spiral rooting continue to be recurring concerns in tobacco float systems. Poor wicking of trays can usually be attributed to old media or media that was improperly stored for extended periods of time. Tray design may also influence speed of wicking. The clay-based pelleting materials used to coat tobacco seeds are thought to cause damage to the emerging root radical under certain conditions, leading to an increased incidence of spiral root. Practices that change the microenvironment at the top of the cell area surrounding the seed may reduce spiral rooting by altering the breakdown of the …
Tillage And Subsoiling Effects On Soil Compaction And Yield Of Burley Tobacco, Edwin L. Ritchey, Robert C. Pearce, John H. Grove
Tillage And Subsoiling Effects On Soil Compaction And Yield Of Burley Tobacco, Edwin L. Ritchey, Robert C. Pearce, John H. Grove
Plant and Soil Sciences Research Report
Historically, tobacco producers have relied heavily on surface tillage to prepare fields for transplanting. This typically involved moldboard plowing, followed by several secondary tillage operations, such as discing then leveling with a soil finisher. Transplanter developments and modifications in the late 1990’s, coupled with new chemicals for weed control, made no-till (NT) tobacco a viable option for tobacco producers in Kentucky (KY).