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Spindly growth, also known as leggy growth, is a term used when two plants compete for sunlight and nutrients in order to develop. Causes
1. Leggy Stems. While more common when starting seeds, stretched out, leggy stems can also be an issue with houseplants. The stems grow longer, and the space between leaf nodes elongates as the ...
Grow lights often need to be closer to plants than you'd think.
Rhizoctonia solani root rot on corn roots, magnified 0.63X. Damping off can be prevented or controlled in several different ways. Sowing seeds in a sterilized growing medium can be effective, although fungal spores may still be introduced to the medium, either on the seeds themselves or after sowing (in water or on the wind).
The seedlings of some flowering plants have no cotyledons at all. These are said to be acotyledons. The plumule is the part of a seed embryo that develops into the shoot bearing the first true leaves of a plant. In most seeds, for example the sunflower, the plumule is a small conical structure without any leaf structure. Growth of the plumule ...
The fungus can survive on infected tissues, in the soil, and on living plants. It affects young seedlings, mature plants, and fruit in the field or in storage. White mold can spread quickly in the field from plant to plant. It can also spread in a storage facility throughout the harvested crop.
The leaves of plants experiencing root rot often yellow and die, and if allowed to continue, the condition can be fatal to the plant. To avoid root rot, it is best to only water plants when the soil becomes dry, and to put the plant in a well-drained pot. Using a dense potting media such as one dug up from outdoors can also cause root rot.
Trichoderma spp. can also be pathogenic to plants. Trichoderma viride is the causal agent of green mold rot of onion. [12] A strain of Trichoderma viride is a known cause of dieback of Pinus nigra seedlings. [13]