Wheat "withered white ears", netizen picture on April 28, 2024:
Wheat "withered white ears", screenshot of the video of netizens on May 2, 2024:
Wheat "withered white ears", screenshot of netizen video on May 3, 2024:
It is caused by one or more of the four diseases of root rot (yellow-brown lesions on the rhizome, "green stem" and "black embryo of the grain" of wheat plants), sheath blight ("moire" lesions on the rhizome), total erosion (black lesions on the rhizome), and stem base rot (light brown or dark brown lesions on the rhizome).
Although it is impossible to resist all four diseases, some wheat varieties with developed root systems are relatively resistant to "withered white ears":
1) It is required that the grain is large and the approved 1000-grain weight is high (under the premise of the height of the spike per mu at the time of approval, the 1000-grain weight approved by the southern variety is more than 45 grams, and the 1000-grain weight approved by the northern variety is more than 44.5 grams).
2) The approved grain bulk density is more than 820 g/L, and the higher the bulk density = the more developed the root system (high fertilizer and water absorption and utilization rate in the deep soil layer).
3) The stronger the drought resistance, the more developed the root system.
4) Varieties with high panicle rate (subject to the approval announcement) and long nodes under the panicle have relatively good disease resistance.
5) The so-called "dwarf stalk and big spike" varieties are relatively serious compared to "withered white spikes".
6) The more they boast of high yields, the greater the proportion of "withered white ears" (the greater the risk of yield reduction) – they "have to" boast of high yields because of the poor resistance of wheat varieties.
7) Planting in any year, at least under the same fertilizer and water conditions, the yield per mu is increased by 200 catties compared with other varieties - specifically refers to the actual yield per mu of growers, rather than the so-called "number game" of the "yield measurement report" without the official seal.
Special attention should be paid to the fact that where wheat varieties are planted with serious "withered white ears", the yield of corn in the next crop is also prone to "green wilt" or "yellow wilt" or "wilt" bracts and leaves.
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