The summer corn "banana panicle" belongs to a type of malformed panicle, which is characterized by higher plant growth, slender stems, poorly developed main panicles, and relatively few kernels or kernels, even in the middle of one or two leafhoppers in the middle of some plants. Out of 3 to 5 small ears, spikes and stems connected, resembling a banana ear, poorly pollinated or not pollinated. At the same time, some plants in the middle of 3 to 4 consecutive leaves also grow out of the ear, forming single and multiple leaves and more ears. With the relevant agricultural experts to diagnose such diseases as corn "banana ears."
There are many reasons for the formation of "banana panicles", and the axillary buds on the stalk extension section below the top 4-6th section of corn can be differentiated into the ear. Under normal circumstances, only the first 1 to 2 buds can develop spikes, and most of the rest are degraded during development. If the plant grows too fast, or if the main ear is not growing, these latent stalks will sprout and develop into multiple spikelets, thus forming a multiple spike. This principle is similar to the biological removal of the "apical dominance" principle. .
During corn growth, drought and low temperatures can easily lead to spindle deaths. After the death of the main axis of the corn, if the nutrient accumulation of the stems and stems of the nodes is high, the latent buds will initiate a new ear and form a "banana spike." In addition, the extreme weather causes the corn flowering period to not occur, the main ear is not pollinated or stunted, and the corn has a period of rainy flowering and raining, resulting in the loss of corn pollen vitality, the inability of the ear to conceive, and the possibility of forming a “grain panicle†with little or no grain. ".
In addition, diseases such as corn borer, aphid, and corn leaf spot disease can also lead to the formation of banana spikes after impairing corn ear emergence.
To prevent the formation of corn "banana ears", agriculture depends mainly on proper sowing, and sowing is not greedy early. Spring corn must avoid the extreme temperatures in early spring, and wait until the ground temperature stabilizes above 14°C and then plant seeds. The second is to plant a reasonable density, corn plant density is too large, it will lead to poor pollination of some corn, resulting in the formation of corn "banana ears." The third is to pay attention to fertilizer and water, fertilizer and water is too large, the excess nutrient of corn plants will also promote the differentiation and development of latent axillary buds, thus forming a multi-spike phenomenon.
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