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How is reagent-grade starch made from potatoes?
Using potatoes, reagent-grade starch can be produced with low cost and high economic benefit. Production method 1. Washing and making potato pulp: Wash the potatoes with water 2 to 3 times, remove all mud and sand, and cut away potato pieces with hoe injuries and rotten holes. Start the crusher, feed in the washed potato pieces, and the potato pulp will flow out immediately. Because fresh potatoes themselves contain about 75% water, no additional water is needed when pulping. 2. Filtering the pulp and rinsing the starch: Filter the potato pulp by machine or by hand, and store the starch milk (water containing starch) in a tank to clarify. Wait for the starch in the tank to settle to the bottom
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What chemical agents should be used to control tomato root-knot nematode disease?
In recent years, the occurrence of tomato root-knot nematode disease has shown an upward trend, especially in dry sandy loam soil where the disease is severe, causing great losses. Root-knot nematodes have a wide range of hosts; besides damaging tomatoes, cucumbers, sweet peppers and others also suffer severely. Root-knot nematodes often overwinter in the soil as eggs or second-stage larvae with galls, root knots, and diseased plant residues...
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Detailed Explanation of Key Points of Barley Seed Coating Agent Cultivation Technology
1. Establish a seed propagation base and a rational improved-variety breeding system. Use the "three-plot field" established by scientific research breeding units or improved-variety farms; the stock seed plot propagates pre-stock seed and stock seed, or stock seed is propagated directly from breeder seed; improved varieties are produced by specialized seed farms or specialized contract households, and the seed department arranges improved-variety production...
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What precautions should be taken when soaking rice seeds in chemical agents?
What should be noted before and after rice harvest? Please note the following four points before and after rice harvest. 1. Drain early. Drain the water in the paddy field as much as possible, and if necessary, dig ditches to drain the water from low-lying areas early and dry the field. 2. Harvest at proper maturity. For manual harvesting, harvest when more than 95% of the rice husks in the field have turned yellow...
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