Author Archives: Erik Runkle

About Erik Runkle

Erik Runkle is associate professor at Michigan State University. You can eMail him at runkleer@msu.edu.

Comparing PGRs

Figure 1. Celosia (Celosia plumosa ‘Fresh Look Red’) was sprayed with either Dazide (daminozide, Fine Americas), B-Nine (daminozide, OHP), Citadel (chlormequat chloride, Fine Americas) or Cycocel (chlormequat chloride, OHP) seven days after plugs were transplanted into 4½-inch pots and grown at 68°F. Controlling plant height is an essential aspect of producing greenhouse crops. Plant growth

Cold-Chain Management

Temperature management is the predominant factor that impacts the post-harvest performance of horticultural crops. Over the past several years, we have been working with cutting suppliers to improve the reliability of delivering unrooted cuttings that perform well in propagation. Inevitably, all roads lead back to temperature management. Cutting performance relies on strong cold-chain management. The strength

Responses To Temperature & Light

Temperature and light are the two environmental factors that primarily influence production time and quality of both young and finish plants. Knowledge of how crops respond to changes in temperature and light can help growers predict crop timing in a variety of greenhouse environments. One of the questions we’ve been addressing is whether less energy is