18 Oct 2010

Ethylene Sensitivity of Unrooted Cuttings from 28 Genera and Effectiveness of 1-MCP to Prevent Ethylene Damage

W. Roland Leatherwood and John Dole (North Carolina State University),J. Faust (Clemson University)

The objectives for the project were to determine: (1) species that are sensitive to external ethylene, (2) document the effects of ethylene on unrooted cuttings, and (3) evaluate the effectiveness of 1-MCP in preventing ethylene damage.

AFE Special Report Ethylene final (142 KB)

18 Oct 2010

Modified Atmosphere Use in Extending Unrooted Cutting Quality and Viability

W. Roland Leatherwood and John Dole (NC State University),Jim Faust (Clemson University)

Modified atmosphere (MA) storage is an adjustment in atmospheric gas composition so cuttings can be stored for several days without effects.MA has been used to study postharvest respiration, and to extend the shelf life of a broad category of produce.

AFE Special Report MAP final2 (113 KB)

18 Oct 2010

Ethephon Residual Catalysis on Unrooted Impatiens hawkeri Cuttings and Stock Plants

W. Roland Leatherwood and John Dole (North Carolina State University)

Ethephon [(2-chloroethyl) phosphonic acid] is used to increase stock plant cutting productivity through increased flower and flower bud abscission and branching. The objective of this study was to assess ethylene evolution from ethephon-treated cuttings during storage and shipping of unrooted cuttings.

Ethephon residues HortScience (656 KB)

18 Oct 2010

Endogenous carbohydrate status affects postharvest ethylene sensitivity in relation to leaf senescence and adventitious root formation in Pelargonium cuttings

Vijay K. Rapaka and James E. Faust (Clemson University), John M. Dole (North Carolina State University), Erik S. Runkle (Michigan State University)

This study investigated the role of ethylene action in postharvest leaf senescence of two cultivars of pelargonium (Pelargonium×hortorum L. H. Bailey ‘Patriot Bright Red' and ‘Patriot White') cuttings to determine whether endogenous carbohydrate status interacts with ethylene action in relation to leaf senescence and adventitious root formation.

Geranium ethylene PBT (971 KB)

18 Oct 2010

Effect of Time of Harvest on Postharvest Leaf Abscission in Lantana (Lantana camara L. Dallas Red) Unrooted Cuttings

Vijay K. Rapaka and James E. Faust (Clemson University), John M. Dole (North Carolina State University), Erik S. Runkle (Michigan State University)

Harvesting Lantana Cuttings HortScience (702 KB)

9 Nov 2009

Rooting Cuttings Efficiently

Jim Faust (Clemson University), Jim Kennedy (Ball Horticulture), & Roberto G. Lopez (Purdue University)

Rooting cuttings efficiently through preparation and propagation.

· Prep

o Space Plan & Facility prep

o IPM o Nutrition plan & Container

o URC Handling Procedures

· Prop

o Sticking

o Hormone application

o Environment o Pinching

o PGR's & Toning

Rooting Cuttings Eff - OFA JF1 (1854 KB)

3 Nov 2009

Geranium Cocktails for reduced leaf yellowing and increased rooting in propagation

Jim Faust, Vijay Rapaka, Kelly Lewis, & Losenge Turoop (Clemson University), Roberto Lopez & Erik Runkle (Michigan State)

Spray applications of K-IBA and Fascination or BA to prevent postharvest stress induced leaf yellowing while maintaining good rooting.

Geranium cocktails (1506 KB)

3 Nov 2009

Geranium Cuttings: Handling & Propagation

Losenge Turoop, Kelly Lewis, Jim Faust (Clemson University)

• Geranium URC handling

          Best Management Practices for handling URCS

• Cocktails for reduced leaf yellowing
• Cocktails for improved flower bud abortion
  

Handling geranium (994 KB)

27 Oct 2009

Cold-Chain Management- Academics share tips on managing and monitoring temperature in the shipping and sticking process.

James Faust and Vijay Rapaka (Clemson University), John Dole (North Carolina State University) and Erik Runkle (Michigan State University)

Cutting performance relies on strong cold-chain management. The strength of a chain depends on each of the individual links from the time of harvesting the cutting until the cutting is stuck on a propagation bench. This article will discuss why temperature management is so important and will provide guidelines for growers for handling boxes of unrooted cuttings.

coldchain (263 KB)