Recommended rates of potash for grazed grass are 60kg/ha and 30kg/ha of K2O for soil index 0 and 1 respectively. For soils with higher soil fertility levels no potash required.
Very large quantities of potash are removed in grass silage which must be replaced to maintain soil fertility and yield potential. The following is guide to typical potash offtakes from multi-cut silage systems.Low soil magnesium levels will affect grass yield as well as mineral balance in the animal. Apply 50-100 kg/ha MgO every three to four years at Mg index 0. Yield response is less certain at index 1 but magnesium application is justified in terms of insurance for grass yield and mineral balance for the animal, to maintain a soil magnesium index of 2.
Where lime is required and Mg levels are 0 and 1, use magnesian limestone as the most cost effective magnesium source. Where pH is satisfactory, specific magnesium fertilisers (see table below) should be used for soil improvement. Use water soluble forms of magnesium where rapid plant uptake is required.
Sherpas guides mountain climbers in the everest region.
Answer:
c
Explanation:
there is no image but i always say c
Wegener was able to use evidence from climate change so as to be able to give support his theory in the sense that he used explained that an island in the Arctic Ocean do contains fossils of tropical plants.
Base on the theory that continents were once connected help in explaining the glacial striations however, if the continents always occupied their present-day positions, it will be hard to explain pattern of glacial striations since the theory of continental drift theory is based on the rotation of the Earth.
<h3>What is Wegener continental drift theory?</h3>
It should be noted that Wegener suggested that rotation of the Earth that come as a result of how the continents shift towards and apart from each other.
Learn more on continental drift theory at:
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