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Report On Phosphorus And Potassium Experiments Conducted On Partner Farms Of The Greener Pastures Project, Mike Bolland, Ian Guthridge, Graham Blincow, Peter Needs
Report On Phosphorus And Potassium Experiments Conducted On Partner Farms Of The Greener Pastures Project, Mike Bolland, Ian Guthridge, Graham Blincow, Peter Needs
Bulletins 4000 -
Dairy production in south-western Australia occurs predominantly on sandy soils in the greater than 800 mm annual average rainfall areas of the region. The climate is Mediterranean-type, typically with cool, wet May-October growing seasons and hot, dry November-April. Most dairy pastures are rain-fed and comprise the annual species Subterranean Clover (clover, Trifolium subterraneum L.), Annual Ryegrass (Lolium rigidum Gaud.) and Italian Ryegrass (L. multiflorum Lam.).
Paddock grown pasture is the cheapest source of feed for dairy production in the region (Dilley and Howes 1998). To remain profitable in the face of diminishing returns, dairy farmers have modified their grazing management …
Potassium For High Rainfall Pastures, Mike Bolland, Bill Russell
Potassium For High Rainfall Pastures, Mike Bolland, Bill Russell
Bulletins 4000 -
Potassium plays a major role in plant growth. It maintains the solutions in plant cells at ionic strengths suitable for maintaining strong plant walls and for the proper functioning of leaf pores (stomata) and plant processes such as photosynthesis, transport of sugars and enzyme activation.
Potassium does not become a direct part of the plant structure but acts to regulate water balances, nutrient and sugar movement in plant tissue. Plants deficient in potassium cannot use other nutrients and water efficiently. They are less tolerant of stresses such as drought and waterlogging and are more susceptible to pests and diseases.