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Western US – One of the best spring forage sources for honeybees. Blooms 45–60 days and continuously produces nectar throughout the day. Can be seeded several times per year. Prefers 3 ft of topsoil. 180–1,500 pounds honey per acre, depending on soil quality and depth; 300–1000 pounds of pollen. [9] G, H Plantain: Plantago Major ...
Topsoil is composed of mineral particles and organic matter and usually extends to a depth of 5-10 inches (13–25 cm). Together these make a substrate capable of holding water and air which encourages biological activity.
For a nursery to produce healthy crops, it will need to have healthy soil. The soil should have good drainage and nutrient holding capacity. Soil testing will help a nursery find out its pH levels, and also the amounts of nutrients in the soil. [19] To test soil drainage, one method is to dig an 18" deep hole that is at least 4" in diameter.
Biological soil crust in Natural Bridges National Monument near Sipapu Bridge. Biological soil crusts cover about 12% of the earth's landmass. [7] They are found on almost all soil types, but are more commonly found in arid regions of the world where plant cover is low and plants are more widely spaced.
Humus allows soil organisms to feed and reproduce and is often described as the "life-force" of the soil. [53] [54] The process that converts soil organic matter into humus feeds the population of microorganisms and other creatures in the soil, and thus maintains high and healthy levels of soil life. [53] [54]
Micro-irrigation supplies water only where it is required and delivers water directly to the root zone of plants at a lower flow rate, allowing the water to soak into the soil rather than run off. According to research, micro-irrigation systems consume 20–50% less water than traditional spray sprinkler systems. [4]
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Nutrients in the soil are taken up by the plant through its roots, and in particular its root hairs.To be taken up by a plant, a nutrient element must be located near the root surface; however, the supply of nutrients in contact with the root is rapidly depleted within a distance of ca. 2 mm. [14] There are three basic mechanisms whereby nutrient ions dissolved in the soil solution are brought ...
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