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What to Do When Wheat Seedlings Turn Yellow? Common Causes and Control Methods
When wheat grows into the winter and spring seasons, the seedlings often turn yellow or even die, and applying fertilizer alone cannot make them turn green again. There are several types of yellowing in wheat seedlings, and if remedial measures are not taken in time, they can cause serious reductions in wheat yield. Yellowing from pests: yellowing of leaves caused by wheat aphids and wheat mites sucking leaf sap, occurring mainly around the overwintering period. Per 667 sq m, use 65-75 ml of 40% omethoate emulsifiable concentrate mixed with 50 kg of water for spray control. Yellowing from disease: wheat sheath blight damages
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Rice seedlings turning yellow, leaves curling, leaf-rolling: what to do? A detailed guide to prevention and control
There are many causes of the rice leaf-rolling phenomenon, and the most common one is the rice leaf roller (Cnaphalocrocis medinalis). Damage characteristics: the larvae bind silk to roll rice leaves lengthwise into larval cases, and the larvae hide inside and feed on the mesophyll, leaving only the epidermis, forming white streaks, which reduces the 1000-grain weight of rice, increases empty grains, and causes yield loss. Control agents: 1. Select rice varieties resistant to (or tolerant of) the pest, fertilize reasonably, so that the rice grows and develops vigorously, and prevent excessive early growth and excessive tillering as well as late-season stay-green and delayed maturity. Manage water scientifically, adjust the drainage (field-drying) time appropriately, and reduce field humidity during the larval hatching period
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What to do when wheat seedlings turn yellow? Take remedial measures as early as possible
When wheat grows into the winter and spring seasons, the wheat seedlings often show yellowing and even dying, and fertilization alone cannot turn the wheat green again. Once yellowing occurs in wheat, if remedial measures are not taken in time, it may cause serious yield reduction in wheat. Yellowing from pests: yellowing of leaves caused by wheat aphids and wheat spiders sucking leaf sap, mainly occurring around the overwintering period. For every 667 sq m, 65-75 ml of 40% omethoate emulsifiable concentrate can be mixed with 50 kg of water for spray control.
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Detailed Explanation of the Technical Key Points for Returning the Full Amount of Wheat Straw to the Field
Crop straw is an important by-product of crops. It is also an important production resource for agriculture and industrial production. Returning crop straw to the field not only avoids the environmental pollution problems caused by rotting and burning, and achieves feeding the land with the land itself, but also consolidates the foundation of soil fertility for greatly increasing soil organic matter content, improving soil structure, building up soil fertility, strengthening the quality construction of cultivated land, and raising crop yield and quality. In every agriculturally developed country in the world, great attention is paid to the scientific rationality of the fertilization structure and the
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Garlic-Ginger Intercropping Brings Good Returns: A Full Analysis of the Planting Advantages
In the history of Zhucheng City, Shandong Province, ginger was mostly grown as a sole crop. Trials and demonstrations of garlic-ginger intercropping began in the 1980s and achieved relatively good economic returns. However, because the intercropping techniques were not fully matched, for example no intercropping rows were left, the intercropped ginger bulbs became smaller, and some even failed to meet export standards, which dampened ginger growers' enthusiasm for intercropping. In order to explore the cultivation techniques for garlic-ginger intercropping, the author carried out multiple trials and survey analyses from 1992 to 1995 in Chengguan Town, Lubiao Township and other places, and summarized a matched set of techniques suitable for local garlic-ginger intercropping. After extension, a double
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How to Return Rice Straw to the Field? A Detailed Guide to Five Practical Techniques
1. Short-cut rice straw incorporation by plowing technique. Cut the rice straw by hand or machine into lengths of 15-20 cm, and spread it evenly over the paddy field. Generally, the amount of dry rice straw spread per mu is 200-250 kg; if early rice straw is used for return, the amount spread per mu of main field is 1/2 or 2/3 of the total rice straw per mu. After the rice straw is spread, on the basis of the original fertilizer amount, apply an additional 8-12 kg of ammonium bicarbonate or 5-6 kg of urea per mu as base fertilizer; if it is a cold-waterlogged field, apply 15-25 kg of lime per mu in combination to accelerate the softening and rotting of the rice straw. The final
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Correct Methods and Technical Key Points for Returning Rice Straw to the Field
1. Rice straw mulching in wheat fields. After wheat sowing is completed, use 250-300 kg of rice straw per mu, cut into 10-20 cm straw segments, and spread evenly over the field so that the straw does not form piles and the soil is not left exposed. 2. Rice straw mulching in rapeseed fields. When transplanting rapeseed, plant the seedlings according to the specified spacing into holes with sufficient basal fertilizer, cover with soil, and then evenly spread rice straw over the whole field at 300 kg/mu, so that the straw does not cover the holes (seedlings) and the soil is not left exposed, while also applying integrated chemical weed control and necessary field management measures. 3. Drainage and
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Rice straw return technology is being vigorously promoted and applied.
Vigorously promoting rice straw return is one of the most economical and effective ways to recycle nutrients through the soil-crop-soil cycle. It not only plays a very important role in improving soil and building up soil fertility, but also has great significance for improving soil potassium and silicon nutrient conditions, balancing crop nutrition, and alleviating the contradiction between the shortage of potassium fertilizer resources in our country and the excessively rapid rise in chemical fertilizer prices. 1. Increasing soil organic matter content. Rice straw has a high organic matter content. Generally, dry rice straw has an organic matter content of 40%. After being returned to the field, it is beneficial to the
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What Are the Benefits of Returning Wheat Straw to the Field? Methods and Precautions Explained in Detail
I. Benefits of Returning Wheat Straw to the Field. Returning wheat straw directly to the field not only reduces the number of tillage operations in the wheat field and lowers the cost of @#@245@#@ production, but also achieves rational use of the high-stubble wheat straw resource, avoids the practice of burning wheat straw, and helps conserve soil and water. After wheat straw is returned directly to the field, the straw covering the plow layer can reduce surface runoff during the rainy season, lessen soil compaction and cracking, and improve the soil's capacity to store water and conserve moisture; after the wheat straw decomposes, it can increase soil organic matter content, improve soil physical and chemical properties, and provide crops with various nutrient elements
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What measures can prevent eggplants from turning bitter?
In response to the above problems, starting with prevention and strengthening comprehensive cultivation management measures is the key to preventing bitter eggplants in protected cultivation. The main measures are: 1. Select varieties suitable for planting in protected cultivation. When cultivating in protected conditions, choose varieties that are resistant to low temperatures, tolerant of weak light, and have only slight bitterness. For newly introduced varieties, expand planting only after successful trial planting first, to avoid blind planting and losses. 2. Optimize the production environment of protected cultivation and meet the physiological needs of eggplants as much as possible. Pay attention to choosing greenhouse materials with strong heat preservation capacity and drip-free film with good light transmission, and frequently remove dust accumulation and dirt on the greenhouse film to ensure sufficient light. Where conditions permit, certain light-increasing measures can be taken, such as using reflective screens and artificial supplemental lighting. Enhance the heat retention and insulation performance of the protected facility so that the temperature inside can meet the needs of eggplant growth. Especially after fruit set, make even greater efforts to reach the suitable temperature for eggplant growth, to prevent imbalance in eggplant growth and development caused by insufficient light and heat, which leads to bitterness.
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