Search results
Results from the WOW.Com Content Network
Thinning from below – this low thinning can be split into 4 Grades: A Grade is a very light thinning, that removes all overtopped trees Kraft crown class 4 and 5. B Grade is a very light thinning that removes overtopped trees and intermediates which are Kraft Crown class 4,5 and some 3s, C Grade and D Grade are a moderate and heavy thinning respectively removing anything that will not lead ...
Nitrogen deficiency is a deficiency of nitrogen in plants. This can occur when organic matter with high carbon content, such as sawdust, is added to soil. [1] Soil organisms use any nitrogen available to break down carbon sources, making nitrogen unavailable to plants. [1] This is known as "robbing" the soil of nitrogen.
Tilled surface soil of a cotton field 1.3: 51 Trafficked inter-rows where wheels passed surface 1.67: 37 Traffic pan at 25 cm deep 1.7: 36 Undisturbed soil below traffic pan, clay loam 1.5: 43 Rocky silt loam soil under aspen forest 1.62: 40 Loamy sand surface soil 1.5: 43 Decomposed peat 0.55: 65
Plants contribute directly to soil moisture. For instance, they create a leafy cover that minimizes the evaporative effects of solar radiation. But even when plants or parts of plants die, the decaying plant matter produces a thick organic cover that protects the soil from evaporation, erosion and compaction. For more on this subject see mulch.
Slash-and-burn agriculture is a farming method that involves the cutting and burning of plants in a forest or woodland to create a field called a swidden. The method begins by cutting down the trees and woody plants in an area. The downed vegetation, or "slash", is then left to dry, usually right before the rainiest part of the year.
The practice entails the targeted removal of diseased, damaged, dead, non-productive, structurally unsound, or otherwise unwanted plant material from crop and landscape plants. In general, the smaller the branch that is cut, the easier it is for a woody plant to compartmentalize the wound and thus limit the potential for pathogen intrusion and ...
This system was developed by Albert Munsell, a painter, in the early 20th century to describe the full-color spectrum, though the specially adapted Munsell soil color books commonly used by soil scientists only include the most relevant colors for soil. [16] The Munsell color system includes the following three components: [1]
The most common crop choices for strip cropping are closely sown crops such as hay, wheat, or other forages which are alternated with strips of row crops, such as corn, soybeans, cotton, or sugar beets. [1] The forages serve primarily as cover crops. In certain systems, strips in particularly-eroded areas are used to grow permanent protective ...