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Potassium bicarbonate has widespread use in crops, especially for neutralizing acidic soil. [11]Potassium bicarbonate is an effective fungicide against powdery mildew and apple scab, allowed for use in organic farming.
Foliar application has been shown to avoid the problem of leaching-out in soils and prompts a quick reaction in the plant. Foliar application of phosphorus, zinc and iron brings the greatest benefit in comparison with addition to soil where phosphorus becomes fixed in a form inaccessible to the plant [5] and where zinc and iron are less available.
The most effective fungicides for bitter rot control include the multisite mode-of-action fungicide captan, the osmotic signal transduction disrupter fludioxonil, the oxidative phosphorylation uncoupler fluazinam, the QOI inhibitors pyraclostrobin and trifloxystrobin, and the succinate dehydrogenase inhibitor (SDHI) benzovindiflupyr.
These measures use the natural environment to enhance agricultural productivity: legumes are planted to fix nitrogen into the soil, natural insect predators are encouraged, crops are rotated to confuse pests and renew soil, and natural materials such as potassium bicarbonate [48] and mulches are used to control disease and weeds.
Trunk injection or endotherapy also known as vegetative endotherapy, [1] [2] [3] is a method of target-precise application of pesticides, [4] [5] [6] plant resistance activators, [7] or fertilizers [8] into the xylem vascular tissue of a tree with the purpose of protecting the tree from pests, or to inject nutrients to correct for nutrient deficiencies.
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 ...
A controlled-release fertiliser (CRF) is a granulated fertiliser that releases nutrients gradually into the soil (i.e., with a controlled release period). [2] Controlled-release fertilizer is also known as controlled-availability fertilizer, delayed-release fertilizer, metered-release fertilizer, or slow-acting fertilizer.
Potassium is the third major plant and crop nutrient after nitrogen and phosphorus. It has been used since antiquity as a soil fertilizer (about 90% of current use). [10] Fertilizer use is the main driver behind potash consumption, especially for its use in fertilizing crops that contribute to high-protein diets.
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