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.
Answer:
D. Trench
Explanation:
This is definitely a trench, I mean just look at it. When I think trench I see that. I'm also sorry to inform you that your teacher stole the image from goo,gle. It is the second image that pops up when you search "ocean trench."
Answer:
the answer to this question is c
The crust is the part you walk on, and it's the surface of the earth.
Answer: Africa
Explanation:
The oldest homo sapiens skeleton found was in Africa. Homo sapiens is believed to have evolved in Africa about 315,000 years ago. This is when the remains found in Morocco is believed to have lived. Also, the second oldest remains of a homo sapiens believed to have lived 200,000 years ago was discovered in East Africa.
It was not until thousands of years later that Homo sapiens migrated from the African continent, reaching China about 120,000 years ago, Australia about 65,000 years ago and Europe about 45,000 years ago. It is believed that homo sapiens came to settle in the Americas about 14,000 years ago.
