Changes in Pesticide use and regulations
both here and abroad can potentially affect local growers while
Integrated Pest Management and integrated weed management are
dynamic areas which are the subject of much ongoing research.
Overviews of recent developments are covered in this section,
together, with key industry events and seasonal developments. Here
are some current items that might interest you.
- Many factors can affect the performance of your defoliant in
the preparation of your crop for harvest. For best results apply
your defoliant with soil moisture at the refill point, while nights
are still warm and with the right rate of defoliant and spray oil
adjuvant for the conditions.www.crdc.com.au
- Commencing your defoliation program at greater than 60% open
bolls is still the best way to guarantee high quality, mature fibre
from your cotton crop. That's the finding of a study published by
the cotton CRC conducted over three seasons to assess the effect of
defoliation timing on the fibre quality produced.
- Late season sucking pests like aphids and silverleaf whitefly
can make for an unappealing harvest. Control of these pests late
season is still a key management consideration. The Caltex
Precision Spray Oil,
Canopy, can be a valuable adjuvant in the management of these
- Most herbicIde applications in summer present a risk of spray
drift. One of the key components of spray drift risk management is
the use of at least medium, but more often coarse spray quality.
Bill Gordon says there are options for achieving herbicide efficacy
even with these large spray droplet sizes.
- Apple dimpling bugs (ADB) live a dual purpose life. Based
on the findings of a study of ADB, Dr Moazzem Khan (DEEDI)
recommends an economic spraying threshold of 10 per metre row of
cotton along with 50% fruit retention at the squaring stage. http://thebeatsheet.com.au/
- The Cotton Catchment Community CRC November On Farm Pest
Management update summarises the use of petroleum spray oils in
cotton pest management.