1976 Phosphorus and sulphur sources trials

PHOSPHORUS SOURCES TRIALS (A) Pasture trials i) High rainfall areas a) Sand: 76BU1 - New land P sources trial, T. O\u27Byrne, Yalingup. 76BU4 - Old land P sources trial, T. Coombes, Busselton. 76EX37 - Young land P sources trial, F. Fels, Esperance. b) Gravel: 76MT10 - New land P sources trial, Mt. Barker Research Station. 76MT9 - Old land P sources trial, Mt. Barker Research Station. ii) Medium rainfall areas: a) Sand 75N07A -New land P sources trial, D. Gillespie, East Chittering. b) Gravel: 75N07B - New land P sources trial, D. Gillespie, East Chittering. iii) Low rainfall areas a) Sand: 76WH9 - New land P sources trial, Wongan Hills Research Station. 76WH10 - Young land P sources trial Wongan Hills Research Station. 76WH14 - Old land P sources trial, Wongan Hills Research Station. b) Gravel: 76N4 - New land P sources trial, Newdegate Research Station. 76N6 - Old land P sources trial, Newdegate Research Station. 76LG6 - Young land P sources trial, Clarke, Newdegate. (B) Crop Trial: 76M028, P sources trial on lupins and wheat, N. Girando, North Gingin. 2. SULPHUR SOURCES TRIALS (A) Pasture Trials i) Long term S sources trials 76BU5 - Old land sulphur sources trial, P. Coombes, Busselton. 76KE1 - Old land sulphur sources trial, J. Hill, Keysbrook. ii) Short term S sources trial 76KE2 - G. Elliot, Keysbrook. (B) Crop Trials 76M029 - Lupins sulphur trial, N. Girando, North Gingin. TRIALS GIVING NO RESULTS IN 1976 Because of the very dry start to the season the following trials suffered severely from drought and yielded no results in 1976: 76M028 - P sources lupin. and wheat. 76M029 - Lupin sulphur trial. 76WH9 - P sources trial (pasture). 76WH10 - P sources trial (pasture). 76N4 - P sources trial (pasture). 76LG6 - P sources trial (pasture) trial. No further reference will be made to these trials in this summary

1975 Phosphorus and sulphur sources trials

1. Sulphur sources trials (a) Newdegate Gypsum Trials: Yarloop - 75YA3, Bridgetown - 75BR10, Busselton - 75BU6, Alexandria Bridge - 75BU7. (b) Gyplap - FeS04 Trial: McAlinden - 75BY4. 2. Phosphorus source trials: E. Chittering - 75NO7A E. Chittering - 75NO7

Regional trials at Esperence

79ES5 Methods of resowing clover into old Esperance sandplain: pasture. Condingup. 79ES6 Methods of resowing clover into old Esperance sandplain pasture. Condingup. 79ES34 Methods of resowing clover into old Esperance sandplain: pasture. Yerangatup. 79ES7 Nutrient response definition trial for clover on sandplain pasture. Gibson. 79ES8 Nutrient response definition trial for clover on sandplain pasture. Gibson. 79ES9 Nutrient response definition trial for clover on sandplain pasture. Condingup. 79ESl0 To test the need for lime in regenerating clover in old Esperance sandplain pastures. Condingup. 79ES11 To test the need for lime in regenerating clover in old Esperance sandplain pastures. Gibson 79ES12 To test the need for lime in regenerating clover in old Esperance sandplain pastures. Gibson. 79ES31(a) Pasture species screening trial Mt Ney 79ES31(b) Medic species Evaluation trial Mt. Ney 79ES32 Pasture species screening trial Mt Ney 79ES33 Pasture species screening trial Condingup 79ES49 Pasture species screening trial Condingup TRIALS ON ESPERANCE DOWNS RESEARCH STATION 79E2 Methods of cultivation trial for four crop species 79E3 Methods of cultivation nitrogen trial 79E4 Methods of cultivation phosphorus trial 79E6 Time of seeding minimum tillage trial for barley and rapeseed 79El5 1:1 rotation trial for wheat comparing a pure clover ley with a pasture ley 79E33 Grain drying trial for barley 79E34 Grain drying trial for wheat TRIALS ON SALMON GUMS RESEARCH STATION 79SG12 Methods of cultivation trial for cereals 79SG13 Fallow trial 79SG14 Mini Road trial for cereals on fallowed kumarl soils 79SG15 Mini Road trial for cereals on kumarl soils 79SG16 Mini Road trial for cereals on kopi soils 79SG17 Seeding rate trial for cereals on fallowed kumarl soils 79SG18 Seeding rate trial for cereals on kumarl soils 79SG19 Time of seeding trial for cereals on fallowed kumarl soils 79SG20 Time of seeding trial for cereals on kumarl soil 79SG21 Medic species evaluation trial. Salmon Gums 79SG22 Medic species evaluation trial W.Salmon Gums 79SG23 Medic species evaluation trial Circle Valley 79SG27 Fallow trial for kopi soils CONTINUING TRIALS 76ES37 Phosphorus sources trial Yerangatup 77E1 Phosphorus sources trial. Esperance Downs Research Statio

Pasture trials of Esperance

(82ES55) - Serradella Co X N trial. R. Burchell, Myrup. Aim: To determine whether Co or low winter temperatures limit the growth of serradella in winter months. (83ES46) - Serradella N trial. High School block, Neribup. Aim: To test whether dry matter production of serradella and subterranean clover are limited by symbiotic nitrogen fixation in mid winter. (82ES46) - T brachycalycinum burr burial trial. J. Royle, Condingup. Aim: To determine the importance of burr burial for T. brachycalycinum for the formation of burrs and seed

Pasture Research at Esperance.

Serradella species and strain evaluation trials. Aim: There are only two strains of serradella available commercially in Australia, Ornithopus compressus, Pitman and Uniserra. There have been approximately 400 strains of the different serradella species collected by Australian scientists and their European colleagues in the Mediterranean region. The aim of these experiments was to screen a selection from this collection in an attempt to broaden the genetic diversity of serradella available commercially. Serradella germination trial. Aim: To measure per cent germination in selected strains of serradella species, with ± pods. Trifolium brachycalycinum hardseed experiment.Results of 1981 sown experiment (1982 not yet completed). Aim: To measure the level of hardseededness in a range of T. brachycalycinum strains on alkaline mallee soil at Esperance, using strains of annual Medicago species and T. subterraneum for comparisons. Subterranean clover hardseed trial. Aim: To attempt to follow the fate of some strains of Trif olium subterraneum over a 3 year period when no further seed is produced after the first year

Phosphorus and sulphur nutrition of pastures in high rainfall areas.

J.S.Yeates and M.F.Clarke started these experiments. In January 1990 M.D.A. Bolland replaced J.S. Yeates (who became Regional Manager of the Northern Agricultural Region) as the Research Officer responsible for the management of the long-term experiments, and to continue the research on the topic. In the experiments the fertilizers wee applied in autumn (March-April) in the years listed in the tables. Trial 80AL4 Location: Cuthbert. A new experiment was started in 1989 to compare two partially acidulated rock phosphate (PARP) fertilizers with ordinary (single) superphosphate (OSP). Trial 84AL32 Location: Denmark The fertilizers compared are ordinary (single) superphosphate (OSP). New (pre 1990) Coastal Superphosphate (NCS), Island (apatite) rock phosphate and Calciphos (500 degrees C crandallite-millisite rock phosphate from Christmas Island). Trial 84AL33 Location: Denmark The phosphatic fertilizers compared were applied once only, in the years 1984 to 1988. the fertilizers compared were: ordinary (single) superphosphate (OSP), new (pre 1990) coastal superphosphate (NCS), Island (apatite) rock phosphate (IRP) and Calciphos (CAL). Data are the mean of three replicates. Trial 84AL35 Location: Denmark Comparison of ordinary (single) superphyosphate (OSP) and new (pre 1990) coastal superphosphate (NCS as sulphur sources for pasture. The fertilizers were applied at the levels of S shown each year (repeated \u27rates\u27). Data are mean of three replicates. Trial 84HA17 Location: West Harvey. Comparison of different P fertilizers when levels of fertilizer (O, 2.5, 5, 10, 20, 40, 100 kg P/ha for each fertilizer) were applied to the same plot each year (i.e. repeated \u27rates\u27). The fertilizers compared were: ordinary (single) superphosphate (OSB), new (pre 1990) coastal superphosphate (NCS), Island (apatite) rock phosphate (IRP) and Calciphos (CAL). Data are the mean of three replicates. Trial 84HA18 Location: West Harvey To compare several fertilizers as sources of P for pasture. The fertilizers were applied once only in the years listed. The fertilizers compare were ordinary (single) superphosphate (OSB), new (pre 1990) coastal superphosphate (NCS), Island (apatite) rock phosphate (IRP) and Calciphos (CAL). Data are the mean of three replicates, measure on October 30 1989. Trial 84HA19 Location: West Harvey A comparison of ordinary (single) superphosphate (OSP) and new (pre 1990) coastal superphosphate (NCS) as sulphur sources for pastures. The fertilizers were applied at seven levels, using the same level each year (repeated \u27rates). Data are the mean of three replicates, measured October 31, 1989). Trial 84HA20 Location: West Harvey A comparison of ordinary (single) superphosphate (OSP) and new (pre 1990) coastal superphosphate (NCS) as sulphur sources for pasture. The fertilizer levels were only applied once only in the years listed. Herbage yields were measured on October 31, 1989. Trial 84HA24 Location: Pinjarra Comparison of four sources of phosphorous as fertilizers for pastures. The fertilizers compared are ordinary (single) superphosphate (OSB), new (pre 1990) coastal superphosphate (NCS), Island (apatite) rock phosphate (IRP) and Calciphos (CAL). The fertilizers were applied at the same levels listed each year (repeated \u27rates\u27). Yields were measure on October 23, 1989. Trial 84HA25 Location: Pinjarra Comparison of the effectiveness of different P fertilizers for pasture production. The fertilizers compared are ordinary (single) superphosphate (OSB), new (pre 1990) coastal superphosphate (NCS), Island (apatite) rock phosphate (IRP) and Calciphos (CAL). Levels of each P fertilizer were applied once only in the years listed. Results are the mean of three replicates, and yields were measured on October 19, 1989. Trial 84HA26 Location: Pinjarra This experiment compares ordinary superphosphate (OSP) and new (pre 1990) coastal superphosphate (NCS) as sulphur sources for pastures. The levels of each fertilizer listed in the table were applied every year (repeated \u27rates\u27). Data are mean of three replicates. Yields are measured on October 26, 1989. Trial 84HA27 Location: Pinjarra Comparison of ordinary superphosphate (OSP) and new (pre 1990) coastal superphosphate (NCS) as sulphur sources for pastures when levels of the fertilizers were applied once only in the years listed. Yields were measured on October 23, 1989. Trial 84HA28 Location: Yarloop. Comparison of different P fertilizers for pasture productions. The fertilizers were applied at the levels listed every year (repeated \u27rates\u27). The fertilizers compared were ordinary (single) superphosphate (OSP), new (pre 1990) coastal superphosphate (NCS), Island (apatite) rock phosphate (IRP) and Calciphos (CAL). Trial 84HA28 (1989 PARP trial) Location: Yarloop In 1989, two P fertilizers were compared in a new experiment adjacent to the original 1984 experiment. The fertilizers compared were ordinary (single) superphosphate (OSP) and the new 1989 partially acidulated rock phosphate (PARP) made by CSBP and Farmers Ltd from North Carolina reactive apatite rock phosphate. Data are mean of three replicates. Yields were measured on October 27, 1989. Trial 86HA1 Location: Cookernup Comparison of different fertilizers as P sources for pasture. The fertilizers were applied at the levels listed every year (repeated \u27rates\u27). The fertilizers compared are ordinary (single) superphosphate (OSP) , new (pre 1990) coastal superphosphate , Island (apatite) rock phosphate (IRP) and North Carolina (reactive apatite) rock phosphate (NCRP). Data are means of three replicates. Yields were measured on November 2, 1989. Trial 86HA2 Location: Coolup. The experiment compare ordinary (single) superphosphate (OSP), new (pre 1990) coastal superphosphate, Island (low-reactive apatite) rock phosphate (IRP) and North Carolina (reactive apatite) rock phosphate (NCRP) as P fertilizers for pasture. The fertilizers were applied at the levels shown in the table every year (repeated \u27rates). Data are the mean of three replicates. Yields were measured on November 3, 1989). Trial 88V10 Location: Vasse Research Station The experiment compares ordinary (single) superphosphate (OSP), new (pre 1990) coastal superphosphate (NCS) and Island (apatite) rock phosphate (IRP) a P fertilizers for pasture. These fertilizers are applied at the levels listed in the table each year (repeated \u27rates\u27). Data are the mean of three replicates. Yields are measured on October 17, 1989. Trial 88V11 Location: Vasse Research Station This experiment compares ordinary (single) superphosphate (OSP), new coastal superphosphate (NCS) as sulphur fertilizers for pastures. The fertilizers were applied at the levels listed in the table each year (repeated \u27rates\u27). Data are the mean of three replicates. Yields were measured on October 17, 1989

Phosphorus nutrition.

Evaluation of soil test for phosphate on sandy soils. Results presented for this project, commenced in 1988, which started as a joint project between the Department of Agriculture and Soil Science and Plant Nutrition, School of Agriculture, University of Western Australia. In the field experiments, 10 levels of superphosphate (three replicates) were applied in May 1988, and 10 levels of superphosphate (also three replicates) were applied in May 1989 onto an adjacent area to the 1988 treatments. Colwell P I(soil test values) and yield data are presented for 1988 and 1989 for the 1988 treatments layed out in 1988, and for 1989 for the treatments layed out in 1989. Data presented are the mean of three replicates. In 1988 the soil samples (0-10 cm, using 2.5 cm diameter samplers) were collected 102 months after the superphosphate treatments were applied. In 1989, the soil samples were collected February-May from the 1988 treatments only, and these were related in 1989 to yields measured from the 1988 and 1989 treatments. The crops were sown in May, cereals at 50-60 kg seed/ha, and lupins at 100 to 129 seed/ha at about 4-5 cm depth. Trial 88BA41, 88BA42, 88BA43, 88EB11, 88N33, 88N34, 88N35, 88SG24, 88SG25, 88SG26, 88WH45, 88SC18, 88SC19, 66M30, 48MI49. Location Badginarra Research Station, East Beverley Research Block, Newdegate Research Station, Salmon Gums Research Station, Wongan Hills Research Station, South Carrabin, Merredin Research Station

Phosphorus nutrition

Trial No.: 84E31 Location: Esperance Downs Research Station.Results: Fertilizer: TSP = triple superphosphate; NCRP = North Carolina rock phosphate; DRP = Duchess rock phosphate. Cultivation: UC = fertilizer applied to the soil surface and left there: C = fertilizer cultivated into the top 10 cm of soil with a rotary hoe after application to the soil surface. Trial No.: 84M63. Location: South Bodallin (Merredin Research Station). Results: TSP = triple superphosphate; NCRP = North Carolina rock phosphate; DRP = Duchess rock phosphate. UC = fertilizer applied to the soil surface and left there; C = fertilizer mixed in to the top 10 cm of soil with a rotary hoe after application to the soil surface. Trial No.: 84NO69. Location: West Dale. Results: TSP = triple superphosphate; NCRP = North Carolina rock phosphate; DRP = Duchess rock phosphate; Cal = Calciphos; UC = fertilizer applied to the soil surface and left there; C = fertilizer cultivated into the top 10 cm with a rotary hoe after application to the soil surface

Effect of seed phosphorus levels in three wheat varieties and fertilizer P supply on their growth and grain yields.

Trial 89WH74 Location: Wongan Hills Research Station, Field 4W Effect of phosphorus and fertilizer on the growth and grain of wheat yields