ScienceDaily: Biotechnology News |
- Artificial light quality affects herbivore preference for seedlings
- Plant growth rate, stem length unaffected by rice hull, peat substrate
- Wild Cuban crocodiles hybridize with American crocs
| Artificial light quality affects herbivore preference for seedlings Posted: 22 Jun 2011 10:52 AM PDT Researchers evaluated the preference of adult sweet potato whitefly to cucumber seedlings grown under fluorescent lamps or metal-halide lamps that provided a spectrum similar to that of natural light. They observed significantly fewer whitefly adults on the fluorescent cucumber treated seedlings than on the metal-halide treated seedlings 24 hours after release. The scientists recommended that growers consider light quality when selecting light sources for transplant production.  |
| Plant growth rate, stem length unaffected by rice hull, peat substrate Posted: 22 Jun 2011 09:57 AM PDT Scientists identified the impact of a substrate containing parboiled rice hulls on plant growth retardant (PGR) applications for controlling plant height or stem length of containerized greenhouse crops. Results showed that PGR drench strategies can be effective for plants grown in substrate containing peat and rice hulls.  |
| Wild Cuban crocodiles hybridize with American crocs Posted: 22 Jun 2011 08:53 AM PDT A new genetic study confirms that American crocodiles are hybridizing with wild populations of critically endangered Cuban crocodiles, which may cause a population decline of this species found only in the Cuban Archipelago.  |
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