Experiments to measure the reduction of Soursob density.

Trials: 74WH; 74C19; 74E16 Soursob density. Rate of application of Diuron, Linuron and Tribunil. Test various formulations of Diuron. Determine the effect of high rates of Diuron on a crop area. Test various chemicals for control of Matricaria. Determine whether Skeleton weed seed is capable of germinating. Differences in the length of skeleton weed seed from different sites

Experimental summary 1979

Contents 79ME28 Soursob (Oxalis caprae) control along Roadsides. 79NO30 A & B. 79NO29 Pre and post emergent applications of Diuron for soursob control in cereals. 79ME31 Post emergent control of soursob in cereals. 79NO39 79ME26 A & B Control of Matricaria (Pentzia sp.) in cereals. 79NO40 Dormancy of Cape Tulip (homeria sp.). 79NO38 Patersons curse (Echium plantagineum) Control in pastures. Afghan thistle (solanum hoplopetalum) Control in pastures. 79ME28 and 79N030 A & B Soursob Control Along Roadsides. Chemicals: Roundup 1, 2 and 3 1ha-1, Diuron 1, 2 and 3 1ha-1, Sencor TD 1, 2 and 3 kgha -1 ) applied at early flowering. Roundup 1, 2 and 3 1ha-1 - applied as additional treatment at late flowering. Comments: Visual assessments indicate that Roundup at 2 and 3 1ha-1 have given best control. Late spraying at one site with Roundup shown to be superior to early spraying. Regrowth of Soursob from treated areas will be measured during 1980

Identification of seeds of undesirable weeds

PREVENTING the introduction of weeds to a farm is a far cheaper proposition compared to the expensive and laborious process of eradicating a well established infestation. Unfortunately most weeds establish themselves as plants before they are identified, the main reason being farmers are often unable to recognise weeds in the seed stage

Reduction soursob twelve months after treaqtment in cereal crops

Locations - Dangin / midstyle variety of soursob, Greenough / midstyle variety, Kalgoorlie Mt Monger Station chemical control of matriciaria, Northam - common short-style variety, Quairading ryegrass control in cereals, Wagin / midstyled variety of soursob in cereals

Calibration of boom sprays

Boom sprays have become increasingly common on Western Australian farms, allowing farmers to take advantage of modern herbicided. Most boom sprays used on farms have 50 cm nozzle spacings and require calibrating regularily to ensure accurate herbicide application. By following these steps, the boom will deliver accurate amounts of herbicide

Weed control in pastures and cereals

80N037 - Post sowing - pre emergence applications of chemicals for soursob control in cereals. Property J. Miller - Beverley. Gamenya wheat - sown 25/6/80. 80N039 - Chemical control of soursob in cereals using herbicide combinations. Property J. Miller, Beverley. Gamenya wheat, sown 25/6/80. 80N038 - Post-emergent chemical control of Soursob in cereal crops. Property J. Miller - Beverley. Crop Gamenya wheat, sown 25/6/80. 80N038 - Post emergent chemical control of soursob in cereal crops. Property N. Hansen - Northam. Crop Warimba wheat sown on 4/6/80. 80N039 - Property Chemical control of soursob in cereals using herbicide combinations. N. Hansen - Northam. Warimba wheat sown on 4/6/80. 80N038 - Post emergent control of soursob in cereal crops. B.L. Riley - Trayning. Halberd wheat - sown 6/6/80. 78N040 - Cape Tulip. Testing factors to break dormancy of cormils. D. Moir - Beverley. 80ME33, 80ME34 and 80ME35 - Weed control in cereals. Property: Breakell, Bencubbin. Gamenya wheat sown 12/6/80. 78N039 - Doveweed seed viability.changes with depth and time of storage in the soil. J. Hill, Beverley. 80KA6 - Chemical control of Afghan Thistle. N. Horne, Wagin

Plant research division, weed control.

Diuron plus MCPA mixtures for broadleaved weed control in cereals, 78Mo49B, 78Mo49A, 78No44, 78Na30. Flowable vs powder formulation of duiron for soursob control in cereals, 78No42. Time of spraying duiron for soursob control in cereals, 78Mo39, 7845D, 78M45B, 78No31B

Comparison of conventional boomspray and C.D.A. equipment for weed control in cereals

l. 84N067 - Ryegrass 2. 84N068 - Capeweed 3. 84ME69 - Capeweed 4. 84 (40-41) - Ryegrass & Radish 5. C.D.A. - Capeweed 6. Boomspray Capeweed Comparison of conventional boomspray and C.D.A. equipment for weed control in cereals – 84C40, 84C41, 84ME69, 84NO67, 84NO68. Effectiveness of Roundup C.T. with and without crop oils applied through Controlled Droplet Applicators (C.D.A.) – Wongan Hills Research Station. Effectiveness of Roundup C.T. with and without crop oils applied through a conventional boomspray – Wongan Hills Research Station