Chemical weed control in irrigation channels at the Kimberley Research Station, Western Australia

1963 ◽  
Vol 3 (10) ◽  
pp. 170 ◽  
Author(s):  
Rijin PJ van
Keyword(s):  
Weed Control ◽  
Western Australia ◽  
Active Ingredient ◽  
Research Station ◽  
Wet Season ◽  
Clitoria Ternatea ◽  
Irrigation Channels ◽  
Butterfly Pea ◽  
Brachiaria Mutica

In three trials at Kimberley Research Station between 1959 and 1962 the herbicides monuron and simazine were tested for the control of weeds in irrigation channels during the wet season. Monuron at 12-16 lbs an acre and simazine at 12 lb an acre active ingredient controlled (or killed) most weeds. More resistant weeds, such as Brachiaria mutica (Forsk.) Stapf. (para grass), Chionachne Hubbardiana Henr. and Clitoria ternatea L. (butterfly pea) required higher rates (up to 20 lb an acre active ingredient). Channels should be sprayed approximately a fortnight before sowing cotton and rice crops. The effectiveness of the treatments was increased by burning the weeds and delving the channels. Since cotton was found susceptible to simazine and rice was very susceptible to monuron, supply channels for cotton should be sprayed with monuron and channels for rice with simazine.

Chemical weed control in the Ord River Valley. 3. Cotton

1964 ◽  
Vol 4 (15) ◽  
pp. 321
Author(s):  
Rijn PJ van
Keyword(s):  
Weed Control ◽  
Active Ingredient ◽  
Dry Season ◽  
River Valley ◽  
Research Station ◽  
Wet Season ◽  
Residual Action

Between 1960 and 1963, four preliminary experiments on herbicides for cotton were carried out at Kimberley Research Station. Diuron, applied pre-emergence at rates of 1/2-1 lb an acre active ingredient (a. i.), and dicryl, applied seven to ten days after emergence at rates of 3-6 lb an acre a. i., gave satisfactory weed control. Diuron, because of its longer residual action (six weeks in early wet season, two months or more in late wet and early dry season) is preferred, and is recommended as the standard herbicidal treatment for Ord River cotton crops.

Chemical weed control in the Ord River Valley. 2. Rice

1964 ◽  
Vol 4 (15) ◽  
pp. 316 ◽  
Author(s):  
Rijn PJ van
Keyword(s):  
Crop Yield ◽  
Active Ingredient ◽  
Crop Yields ◽  
Good Control ◽  
Dry Season ◽  
Research Station ◽  
Wet Season ◽  
Japonica Variety ◽  
Indica Variety ◽  
Increase Crop Yield

Three herbicides, CIPC (Isopropyl-N-(3-chloropheny1)-carbamate) EPTC (Ethyl-NN-dipropylthiol- carbamate) and Stam F-34 (3,4-Dichloropropionanilide), were tested for the control of barnyard grasses, Echinochloa colonum (L.) Link and Echinochloa crus-galli (L.) Beauv., in rice at Kimberley Research Station. The herbicides were tested at different rates and times of application on land lightly and heavily infested with weeds in crops of dry season rice, japonica variety Caloro, and wet season rice indica variety Meli No. 2 or Sircna. CIPC gave good control of weeds but did not increase crop yield ; furthermore, it was unreliable in its action and in one experiment reduced crop yield. EPTC, at 1 lb an acre active ingredient applied pre-sowing, gave good control of weeds but no increases in crop yield. Stam F-34, at 3-6 lb an acre active ingredient applied two to three weeks after crop emergence, gave good control of weeds in both wet and dry season rice and, as a result, crop yields increased.

Seasonal changes in the nutritive value of some native pasture species in North-western Australia.

1980 ◽  
Vol 2 (2) ◽  
pp. 175 ◽  
Author(s):  
AM Holm ◽  
GJ Eliot
Keyword(s):  
Western Australia ◽  
Crude Protein ◽  
Nutritive Value ◽  
Dry Season ◽  
In Vitro Digestibility ◽  
Research Station ◽  
Wet Season ◽  
Crude Fibre ◽  
Pasture Land ◽  
North Western

The nutritive value of Astrebla elymoides, A. pectinata, Chrysopogon fallax, Iseilema vaginiflorum, Neptunia monosperma from black soil plains (BSP) pasture land; and Plectrachne pungens, Chrysopogon fallax, Sorghum plumosum, and Eriachne obtusa of curly spinifex-ribbon grass (CSRC;) pasture land, was assessed over the period October 1975 to October 1977 at the Fitzroy Pastoral Research Station, north Western Australia. Seasonal trends in crude protein, crude fibre. phosphorus. calcium and in vitro digestibility, together with some physiological parameters are described for each species. BSP pastures were found to be higher in crude protein, lower in crude fibre and more digestible than CSRG pasture species. Crude protein contents of most BSP pasture species were sufficient for maintenance of cattle during the dry season while CSRG species were below maintenance All species were deficient in phosphorus over the dry season and some species were marginal to deficient over the wet season.

The response of weaner cattle grazing natural pastures in north western Australia to phosphoric acid, non protein nitrogen and sulphur in their drinking water.

1981 ◽  
Vol 3 (2) ◽  
pp. 133
Author(s):  
A.McR. Holm ◽  
AL Payne ◽  
PD Morgan ◽  
EJ Speijers
Keyword(s):  
Drinking Water ◽  
Phosphoric Acid ◽  
Western Australia ◽  
Cattle Grazing ◽  
Dry Season ◽  
Research Station ◽  
Wet Season ◽  
Protein Nitrogen ◽  
Nitrogenous Compounds ◽  
North Western

The study was designed to evaluate the effects of phosphorus and non protein nitrogen supplementation on weaner cattle grazing natural pastures on the Fitzroy Pastoral Research Station, north Western Australia. The study was repeated over the period July 1971 to April 1976, with four drafts of weaners which grazed Mitchell grass pastures during the dry season and curly spinifex-ribbon grass pastures during the wet season. In each year, one of four groups received either no supplement (control), urea plus sulphuric acid, phosphoric acid, or urea plus ammonium sulphate plus phosphoric acid. The supplements were measured into and mixed with the drinking water. Weaners given phosphoric acid gained between 10.5 and 21.7 kg a head more than those not given phosphorus. The response was significant in two of the four dry seasons, three of the four wet seasons and for every ye= when both seasons were considered together. Urea supplements increased liveweight gain over the dry season and depressed liveweight gain over the wet season. There was no advantage to urea when the two seasons were combined. Cattle given supplements through the drinking water drank less water and more of those given nitrogenous compounds died than those not receiving supplements.

Chemical weed control in the Ord River Valley. 1. The oilseed crops : safflower and linseed

1964 ◽  
Vol 4 (15) ◽  
pp. 309 ◽  
Author(s):  
Rijn PJ van
Keyword(s):  
Weed Control ◽  
Iodine Value ◽  
Active Ingredient ◽  
Oil Content ◽  
River Valley ◽  
Portulaca Oleracea ◽  
Research Station ◽  
Oilseed Crops ◽  
North West

A range of herbicides was tested on the oilseed crops linseed and safflower at Kiberley Research Station on the Ord River in north-west Australia. Diuron and TCA were the most effective. Diuron at 0.75 and 1 Ib an acre active ingredient, applied pre-emergence, controlled the grasses Chloris spp. and Echinochloa colonum (L.) Link and pigweed, Portulaca oleracea L. without affecting linseed and safflower. TCA at 4 to 8 lb an acre active ingredient, applied pre-emergence, and at 4 lb an acre active ingredient, applied early post-emergence, controlled the above grasses without affecting safflower. On linseed, TCA can be applied at 4 to 8 lb an acre active ingredient as a pre-emergence or early post-emergence spray, but early post-emergence application reduces percentage oil content and iodine value of the seed.

scholarly journals Identification of Anthocyanin Compounds in Butterfly Pea Flowers (Clitoria ternatea L.) by Ultra Performance Liquid Chromatography/Ultraviolet Coupled to Mass Spectrometry

Molecules ◽  
2021 ◽  
Vol 26 (15) ◽  
pp. 4539
Author(s):  
Nguyen Minh Thuy ◽  
Vo Minh ◽  
Tran Ben ◽  
My Tuyen Thi Nguyen ◽  
Ho Ha ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Ultra Performance Liquid Chromatography ◽  
Negative Ion ◽  
Trans Isomers ◽  
Clitoria Ternatea ◽  
Flower Extract ◽  
Cis And Trans Isomers ◽  
Butterfly Pea ◽  
Cis And Trans

Butterfly pea flower have great sensory attraction, but they have not yet been used widely in Vietnam. Extracts of butterfly pea flowers can be used conveniently as a natural blue colorant for food products. In this study, the identification of anthocyanin compounds in butterfly pea flowers was performed by UPLC coupled with a UV and Mass spectrometer instrument. Positive and negative ion electrospray MS/MS chromatograms and spectra of the anthocyanin compounds were determined. By analyzing the chromatograms and spectra for each ion, five anthocyanins were identified in the butterfly pea flower extract; these were delphinidin-3-(6”‐p-coumaroyl)-rutinoside, cyanidin 3-(6”-p-coumaroyl)-rutinoside, delphinidin-3-(p-coumaroyl) glucose in both cis- and trans- isomers, cyanidin-3-(p-coumaroyl-glucoside) and delphinidin-3-pyranoside. Additionally, based on their intensity, it was determined that cyanidin-3-(p-coumaroyl-glucoside) was the most abundant anthocyanin, followed by cyanidin 3-(6”-p-coumaroyl)-rutinoside, delphinidin-3-(p-coumaroyl-glucoside), delphinidin-3-(6”-p-coumaroyl)-rutinoside and delphinidin-3-pyranoside. In this study, cyanidin derivatives were discovered in butterfly pea flower extract, where these compounds had not been detected in previous studies.

Sign in / Sign up

Export Citation Format

Share Document