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Detailed Explanation of Fertilization and Water Management Techniques for Longan
I. Symptoms Young shoots, leaves and flower panicles can all be affected, and show obvious symptoms. The young leaves on diseased shoots are narrow and small, pale green, with curled leaf margins that cannot unfold, appearing tubular; in severe cases the entire leaf becomes linear and smoke-brown. The leaf surface of mature leaves is uneven, the leaf margins often curl and shrink toward the leaf underside, and the leaf tip bends downward; the leaf...
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Detailed Explanation of Key Points of Formula Fertilization Technology for Yardlong Beans
1. Symptoms mainly affect leaves, stems and vines, and pods. In the early stage of the disease, purple-brown spots appear on both sides of the leaves, and after expanding they become nearly circular dark brown lesions, 1-2 cm in diameter, with indistinct edges; when humid, the lesion surface is densely covered with sooty mold (especially prominent on the underside of the leaves). In severe cases, it causes early defoliation, leaving only the young leaves at the top, ...
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Spring planting fertilization tip: Effective potassium application boosts high yields in spring corn
Delayed senescence (staying green and late-maturing) refers to soybeans that, when they should be maturing, still have green branches and leaves with vigorous growth and seeds that are not yet plump, though not shriveled pods or shriveled seeds. The main cause of delayed senescence is excessive application of nitrogen fertilizer or application too late, causing excessive vegetative growth, delaying maturity, and affecting yield. To prevent delayed senescence in soybeans, it is necessary to timely...
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A Complete Analysis of the Key Technical Points for Soil Testing and Formula Fertilization in Spring Corn
1. Choose suitable varieties. Select suitable and superior varieties according to local conditions; based on heat resources and actual production conditions, choose medium-to-late maturing varieties with a growth period of 120-130 days. Among spring corn varieties with relatively outstanding comprehensive traits, the main one is Nongda 108, etc. 2. Fine land preparation. Spring corn requires deep plowing, and the earlier the autumn plowing...
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Why Spring Corn Fertilization Should Be Light Early and Heavy Late
The corn borer, also known as the corn stalk borer. Spring corn is currently at the late whorl stage (funnel stage), and this period is the best time to control the corn borer. At the funnel stage, most newly hatched corn borer larvae crawl into the leaf whorl tube and feed on the mesophyll of the not yet unfolded leaves, and spraying at this stage makes it easy for the spray liquid to enter the leaf whorl tube, improving control effect...
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How to fertilize celery? A detailed explanation of the basis and methods of fertilization
How is celery fertilized? What is fertilization based on? Producing 1000 kg of celery requires 2 kg of pure nitrogen, 1 kg of phosphorus pentoxide, and 4 kg of potassium chloride. Before transplanting, apply 5000 kg of high-quality farmyard manure and 40 kg of phosphate fertilizer per mu. When the celery plants are 10 cm tall, begin the first topdressing, applying 7-10 kg of nitrogen fertilizer and 1...
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Detailed Explanation of Key Technical Points for Scientific Fertilization of Sunflowers
Based on the symptoms, it may be stem rot, a form of sclerotinia disease, which can be controlled with thiophanate-methyl. Or use thiophanate-methyl combined with carbendazim, procymidone, and dimethachlon for control.
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How to fertilize yam? Detailed explanation of the correct fertilization method
How should Chinese yam be fertilized? Chinese yam is a food and medicinal crop whose product is the underground tuber. Because its tuber is large and in some varieties reaches 1-2 m deep into the soil, deep, well-drained sandy loam soil should be chosen. Chinese yam likes organic fertilizer, which can be spread from sowing until the vines develop. Spread...
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How to fertilize lotus root planting? Detailed explanation of fertilization methods
How can pollution-free lotus root cultivation achieve high yields? How should management be carried out? For pollution-free lotus root cultivation, you can refer to the following techniques: 1. Field selection: Choose low-lying wet fields with convenient irrigation and drainage, with yellow mud or blue mud soil being best. 2. Fine land preparation and sufficient base fertilizer: 1. To build soil fertility, you can use the method of turning under green manure, that is...
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How to Fertilize Rapeseed for High Yield? A Detailed Guide to Practical Fertilization Methods
1. Apply seedling fertilizer early. In late November or early December, mainly use organic fertilizer, applying 1500-2000 kg of organic fertilizer per mu. For some fields with poor growth, an appropriate amount of chemical fertilizer should also be applied. 2. Apply stem-elongation fertilizer at the right time. Stem-elongation fertilizer should preferably be applied when the main stem bolts to 10 cm. For fields with good early seedling vigor, it may be slightly...
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