Showing posts with label pest. Show all posts
Showing posts with label pest. Show all posts

12 March 2012

HORTPARK 3

Unlike the two earlier posts on HortPark, this one focuses more on pests and diseases and nutrient deficiency symptoms.

There is a wide range of scale insects shown here. Some even look like barnacles on the stems and branches of the plants. The blackish soot-like layer on the leaves is the sooty mould, brought about by the scale insects. Usually, sucking insects like scales, aphids, mealy bugs secrete a honey dew-like substance that attracts ants. The ants harvest the substance and in turn farm these insects and protect them from other predators.


There was also a grasshopper, spotted on the leaf of a Canna plant, which typically chews the leaves causing extensive damages.


The variegated and non-variegated Manihot esculenta (common name: Tapioca) is also a nest bed of mealy bugs.


The leaves of the Diospyros malabarica tree were also badly damaged by the Bagworms.


The 3 stages of the Ladybird were also captured by the camera. Who would have thought that their larval stages look entirely different from the winged insect?


The reddish edge of the leaves of this particular Tristaniopsis whiteana tree was showing symptoms of possibly phosphorus deficiency.


Hispid beetles were found on the badly damaged fronds of the Coconut Palm.


Finally, this alien like moth caterpillar, which I captured before, was busy eating the leaves of the Ardisia elliptica.


























04 March 2012

HAMELIA PATENS

My Hamelia patens previously suffered from a bad case of scales infestation. Recently, it was a case of severe mealy bugs infestation. 


I must admit that I neglected it, like a forgotten concubine, for some time and didn't pay it much attention and didn't notice the pest infestation until it was so bad. The clusters of mealy bugs were gathered on the underside of the leaves, on the flowers and on the new leaf and floral buds etc.


It was so terrible I had no choice but to prune back the entire plant since I would much prefer not to use pesticides these days. I even shifted its orientation today and hopefully it would recover soon.






16 October 2011

PESTS

I couldn't believe what I saw weeks ago but many pairs of eyes were staring back at me. I had to take the photos of these rats.

13 April 2011

PEST AND DISEASE

These photos were taken on 30th and 31st March at HortPark's Native Garden.

1st photo: scales
2nd - 3rd & 5th photos: mealy bugs
4th photo: sooty mould

Simply put, the pests are all sucking insects and they are the primary infestation. They would suck the plant sap or juice and secrete some 'honeydew' like substance that would attract ants. Hence, they have this mutual beneficial relationship and the ants are usually sucking pests farmers.

Associated with the primary pests is usually the secondary infestation of fungal disease, like sooty mould. So in order to get rid of the sooty mould, one needs to remove the causal agent or the source of the problem. Otherwise, the effort would likely be futile.

Some links on the pests and the natural enemy of sucking pests, the ladybird, are shown below: