![]() Other fungi also become noticeable on the dead, brown lower stalks. I interpret it mostly as signal that the plant is successfully moving maximum carbs to grain and not necessarily a sign of stalk rot. ![]() The anthracnose fungus is often found in the dying tissue. As sugars are moved from leaves to the grain, this upper internode often is depleted first resulting in senescence of this tissue. It is often noted that this internode turns brown when remaining stalk is green. Another interaction with the fungus commonly occurs in the uppermost internode of the corn plant. If there remains a green color around the black streaks, the lodging threat is not great. This color only intensifies, however, if the plant wilts, apparently because the living cells can restrict the fungus. The anthracnose fungus, Colletotrichum graminicola, will cause black streaks on the outer rind even on a green stalk. Individual plants with green lower stalks a few days after grain ‘black layer’ will remain intact through harvest. Visual inspection of the color of the lower stalks to judge this deterioration also can be used to evaluate the plant’s vulnerability to lodging. One can access this vulnerability by gently pushing the stalks or pinching the lower stem. This changes the stalk structure from a solid rod to a tube, reducing the strength by a third, leaving it vulnerable to breakage. This color change progresses to yellow and a few days later to brown.Īs the brown color intensifies, desiccation of the internal pith causes withdrawal of the pith from the outer rind. The dark green color becomes yellow-green a few days after the plant wilt. If the plant wilts because of root rot, not only do the leaves desiccate, turning from a green color to gray within a few days and then brown but the stalk color changes also. This color continues beyond grain fill as this annual plant matures without wilting, even up to normal grain harvest. My plant has endured so much, I'd like to see it survive.Corn stalks have a green outer rind color during most of the growing season as the outer cells are pigmented by the chlorophyll. I don't see any insects around the leaves, and don't know what's causing this. The yellowing has since turned brown and has spread to other leaves. Recently, about two months ago, I noticed semi-circular patches of yellowing along the edge of one leaf. Here's my question, if I could piggyback off of the previous post. I water all my plants once a week, but found that when I watered the cane plant twice a week, the leaves grew more quickly. It lived for months in standing water by a window facing the south. ![]() In my limited experience, the plant likes sunlight, warmth and water. The leaves grow more slowly than the roots. Old leaves grew longer and new leaves sprouted from the center. After taking it home to a more moist environment, the cane plant (see picture) has grown considerably. ![]() After about six months, my boss suggested that I put the bud with roots into a pot and grow it home. There was no growth and only slight drying. Meanwhile, the leaves on top of the bud stayed almost exactly the same. I changed the water and watched in amazement as the roots continued to expand. When I checked back, the water had turned brownish but the bud had sprouted roots on its own. I left it there for several weeks and forgot about it. Instead of throwing it away, I stuck the bud in a clear plastic cup with only water and placed it by the window. The bud was a little bigger than yours but has more green leaves on it. Last year, a stalk in the office tipped over and one of the green buds fell off. ![]() In my experience, the corn/cane plant is extremely resilient. ![]()
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