6,810 research outputs found
Pasture deterioration trial
Trial 89NA61
Location: Duranillin
In this site we would expect a very large response (40 to 50% ) to phosphorus.
History:
The site was chosen because of the patchy and poor pasture production. The poor areas tend to have more suckling clover than the good areas. The pasture was legume dominant.
Treatments were applied on April 16, 1989
Soil hardpans and plant growth
When farm vehicles travel over moist soils they can create hardpans which can marledly reduce crop and pasture yields.
Research at Wongan Hills Research Station has shown that plant growth and nutrient uptake were affected for at least eight years after the original workings caused the hardpan
New block Badgingarra RS late time of seeding.
Trial 89BA33,
Location: Badgingarra
Based on a 1.5 t/ha potential yield, the strategic treatment was planned to be 120 kg urea/ha 4WAS. However, the crop was poorly established and so NH4NO3 was used in the hope of getting better tillering than would be possible with the slower release urea source. Gambling on equal dollars to urea for 2/3 N, but believe that twice as effective.
DAP was used to place nitrogen with the seed in case there was no rain of significance after seeding. This nitrogen (only 5 kg/ha) was probably lost with the rains of 20-28/7/89 (50 mm). Urea (60 kg/ha) was applied at 4WAS with the option to apply more later if yield potential warranted it.
Trial 89BA32 1st Top
Hand harvest 7/12/989
Trial 89BA32 2nd Top
Hand harvest 7/12/89
Trial 89BA32
Tiller Analysis
About 20 plants per replicate for each of four replicates were described. The results are expressed per hundred plants. There were on average, about one hundred plants per metre squared
General Phosphorus Trials
The trial programme of past years was considerably reduced in size because of the absence of J.W. Bowden (Research Officer). Further, extensive drought conditions in the W.A. agricultural areas wiped out several trials.
INDEX Super x stocking rate trial 66M30. Maintenance P x S trials 65Al, 65C5, 65N5, 69WH15. Residual Value of Phosphorus 75LG26, 77NA4, 78BA7, 79N05, 79JE8 & 9.
Times and Methods of Application 80M7, 8OM6, 80WH9, 80MO7
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