Time and rate, comparative fungicide, fungicide application method trial, clover scorch economy demonstrations

Time and Rate Trial 75AL33 Comparative Fungicide Trial 75AL34. Fungicide Application Method Trial 75D8. Clover Scorch Economy Demonstrations 75AL35

Clover scorch fungicide trials, Cercospora leaf spot of sub clover, Lupinosis control.

82 AL 60, Clover scorch fungicide trials. Aim: Test a range of new fungicides for clover scorch control in comparison with Benlate. Comments: DPX 164-2 and Bavistin gave excellent disease control even at the lower rate. Benlate and Tilt were still satisfactory but control was not as good at the lower rate. Bayleton and Baycor gave some disease control but only at the higher rate. Cercospora leaf spot could be found on most plots with careful search. Economically important damage has occurred only on a few plots. Pseudopeziza leaf spot was notably absent during this season compared with others. 83 MB 1, 83 AL 1. Lupinosis control. Aim: Test variously timed spray applications of Benlate at the rate of 300 g/ha to control invasion of lupin sterns by Phornopsis

1977 Experimental summary - Clover scorch

1. Clover Scorch Fungicide Demonstration - 77BU15. 2. Clover Scorch Disease Progress Curve. 3. Clover Scorch Spore Survival

(1) Powdery mildew control of grapes with fungicides. (2) Black spot and Downy mildew of processing peas: 80AL32. (3) Facial eczema investigation.

Powdery mildew control of grapes with fungicides. Location: Mount Barker Research Station. Black spot and downy mildew of processing peas - 80AL32. Facial eczema investigation. Facial eczema is a recognised myco-toxic disease of grazing stock in New Zealand. It is caused by a fungus Pithomyces chartarum growing on dead litter part of the pasture. The disease has become recognised as a risk to sheep in the Albany Region following reported losses in 1978. A pasture paddock at Cape Riche was sampled weekly by the Animal Division to determine fluctuations in spore numbers of P. chartarum. Comments: The fungus could readily be found sporulating in abundance on fresh dried-off grass while on old only occasionally and then sparsely, and not at all on clover. In later work it was also found on aged clover runners. Work is planned to continue to find toxic strains of P. chartarum in this region

Diseases of rape

A few serious outbreaks of disease occurred in rape crops in Western Australia in 1971 but future crop losses will be much greater where routine disease prevention is not practised. Control measures for all these diseases are based on efficient destruction of crop residues by grazing and burning and by rotations which allow time for decay of below ground residues

1976 - Strategic fungicide trials - botrytis seed vetches - benlate kabatiella subclover

February 1977. 1. Strategic fungicide trial - 76AL34 - Obtain information on the effect of various timed spray applications of Benlate over the growing season on the development of clover scorch. 2. Strategic fungicide trial - 76BU6 - To assess the effect of fungicide treatments at periodic intervals over the season on the development of clover scorch disease 3. Comparative fungicide trial - 76AL33 - To compare the effectiveness of four fungicides at two rates for the control of clover scorch disease with or without addition of spraying oil. 4. Effect of Botrytis on seed yield of vetches - 76AL42. 5. Rates & times of application of Benlate on Kabatiella infected subclover - 75AL33

1979 SUMMARY OF RESULTS OF FIELD EXPERIMENTS

(1) Bunch Rot Control of Rhine Riesling Grapes: 78AL46. (2) Bunch Rot (Bunch Breakdown) on Rhine Riesling Grapes: 78AL47. (3) Black Spot (Ascochyta Blight) of Processing Peas: 79AL45

Clover scorch fungicide trials, Cercospora leaf spot, Facial eczema investigation.

Clover scorch fungicide trials – 81AL33, 81D8. Cercospora leaf spot – 81AL35. Facial eczema investigation - In W.A. a serious outbreak of this disease has occurred on mixtures of annual and perennial species in the autumn

Synthesis, structural and magnetic properties of TM22+[MOIV(CN)(8)]center dot nH(2)O

Octacyanomolybdates (OCMs) TM2 divided by[Mo(CN)(8)]center dot nHO, where TM is Mn, Fe, Co, Ni, Cu were synthesised and characterised by IR spectroscopy and UV-VIS spectroscopy. The UV-VIS spectrum showed the intervalence charge transfer (IVCT) band between Mo-IV-CN-Cu-II and Mo-V-CN-Cu-I around 510 nm. Studied OCMs adopt tetragonal crystal structure. The H-1 NMR signals reflect the magnetic moment of the TM2- ions (mu(P)). The decay rates of free induction decay (FID) signals increase as pp and the applied static rf-field increases. The spin-lattice relaxation times at 27.7 MHz vary from 0.0187 ins (Mn) up to 0.45 ms (Cu). Magnetization measurements indicate long-range magnetic ordering of Mn- and Co- OCMs with the Curie temperature T-c = 4 K. The remaining OCMs (TM is Fe, Ni, Cu) are paramagnetic down to T = 1.9 K