Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Controlling cucumber beetles organically

19.02.2009
Pest numbers reduced, fruit yields increased using organic methods

As the popularity of organic produce increases with consumers, growers need more options to manage pests naturally.

John D. Sedlacek and Gary R. Cline (retired) of the Land Grant Program at Kentucky State University led a research project designed to investigate options for reducing the presence of cucumber beetles. These pests damage crops by eating the roots, shoots, and flowers, and transmit the bacterial wilt pathogen. The study, published in the American Society of Horticultural Science journal HortTechnology, compares several practices in watermelon and muskmelon crops.

In 2002, watermelon was grown on black plastic mulch with the exception of one group, which was grown on Al-plastic, an aluminum coated plastic mulch previously linked to reduced cucumber beetle densities on squash. Another plot of watermelons was planted with companion plants thought to repel cucumber beetles. A third group was planted with a different set of companion plants that seem to attract insects that prey on cucumber beetles. Sticky traps stationed among the plants collected cucumber beetles, which were counted and removed on a weekly basis. The watermelon yields were not adversely affected by the Al-plastic nor by the companion plants.

More beetles were collected in the control and Al-plastic groups than the companion plant groups. Similar numbers of beetles were trapped in repellent plant groups and beneficial insect-attracting plant groups, suggesting these plants may be more valuable as a physical barrier to the beetles' movement than for their attractive or repellent properties.

In 2003, the study was replicated using muskmelons. Al-plastic was included again, but the companion plant groups were combined to include beetle-repelling radishes and predator-insect-attracting buckwheat. Other treatments included use of rowcovers and the organic insecticide PyGanic®. The separate Al-plastic and companion plant groups increased muskmelon yields of 75% and 66%, respectively, compared to the control. Rowcovers also significantly increased yield. The number of trapped beetles was significantly higher in the control group than in any other.

Then, in 2004, the study was repeated, but this time the insecticide group was replaced by a combination of Al-plastic and companion plants. Muskmelon weights varied significantly among all groups, with the greatest weights coming from the Al-plastic and companion plant combined groups with rowcovers. Weights in the Al-plastic-only group were greater than in the companion plant-only group.

All of the treatments, except for the insecticide, significantly increased yields compared to control groups. It appeared that some treatments, such as companion plants, may have reduced beetle populations by affecting adults, while others, such as the Al-plastic, may have affected beetle larvae still in the soil.

Michael W. Neff | EurekAlert!
Further information:
http://www.ashs.org
http://horttech.ashspublications.org/cgi/content/abstract/18/3/436

More articles from Agricultural and Forestry Science:

nachricht How much drought can a forest take?
20.01.2017 | University of California - Davis

nachricht Plasma-zapping process could yield trans fat-free soybean oil product
02.12.2016 | Purdue University

All articles from Agricultural and Forestry Science >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Traffic jam in empty space

New success for Konstanz physicists in studying the quantum vacuum

An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...

Im Focus: How gut bacteria can make us ill

HZI researchers decipher infection mechanisms of Yersinia and immune responses of the host

Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...

Im Focus: Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.

While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...

Im Focus: Studying fundamental particles in materials

Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales

Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...

Im Focus: Designing Architecture with Solar Building Envelopes

Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.

As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Sustainable Water use in Agriculture in Eastern Europe and Central Asia

19.01.2017 | Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

 
Latest News

Helmholtz International Fellow Award for Sarah Amalia Teichmann

20.01.2017 | Awards Funding

An innovative high-performance material: biofibers made from green lacewing silk

20.01.2017 | Materials Sciences

Ion treatments for cardiac arrhythmia — Non-invasive alternative to catheter-based surgery

20.01.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>