Rabu, 15 Agustus 2012

Biological and Chemical Controls for Moluscan Pest

This group of critical pests belongs to the phylum Mollusca, a bunch including the octopus and whelk as well as the slug’s close relatives, the particular snails, which cause a number of damage to plants within greenhouses and private home gardens

Biological control

The parasitic rhabditid nematode, Phasmarhabditis hermaphodita (Schneider) is considered by growers and researcher to offer the best alternative to chemical control (Ester and Geleen, 1996);Glen et al, 1996). Effective gastropod control with the nematode has been shown however to be highly dependent on optimal timing of application in relation to crop development. Further , placement of application of the nematodes is important. The comment relating to timing and placement of molluscicides apply similarly here

In greenhouses. Organic grower of asparagus and flower, such as roses, keep quail (cortunix cortunic Linn; and small chicken (Gallus gallus (Linn) to protect crops from gastropods damage, but the are no objective data on efficacy of these approach.

Chemical Control:

Private home gardeners use many non-chemical kinds of control, ranging from lures of grapefruit templates and stale draught beer to soot scattered around larger plant life. A nematode (Phasmarhabditis hermaphrodita) is getting used to limit slug quantities. The most effective methods open to both amateur along with professional horticulturists at the moment are 3 chemicals, aluminium sulphate (a great irritant), metaldehyde (which dehydrates your slug) and methiocarb (which provides a stomach poison). The harmful chemicals are most commonly used while small-coloured pellets (which include food attractants for example bran and sugars), but metaldehyde may also be used as a drench. Some farmers estimate the slug inhabitants using small tons of pellets covered with a ceramic tile or flat gemstone (to prevent bird accumulation) before deciding on common control. Use of metaldehyde and also methiocarb in gardens recently been claimed like a major contribution for the decline of the yeast infection numbers.

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