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Coremium Reviewed: March 2023 A cluster of erect fungus filaments (hyphae) that are joined together to form a column and that bear asexual spores (conidia). ...

Cultivar (abbr. cv.) Reviewed: March 2023 A cultivated plant variety or cultural selection. Used synonymously with variety. ...

Curl Reviewed: March 2023 The distortion, fluting, and puffing of a leaf resulting from the unequal development of its two sides. ...

Damping-off Reviewed: March 2023 Decay of seeds in the soil (pre-emergent damping-off) or young seedlings before or after emergence (post-emergent damping-off). ...

Diagnostic Reviewed: March 2023 Distinctive. A distinguishing characteristic serving to identify or determine the presence of a disease or other condition. ...

Dieback Reviewed: March 2023 Progressive death of shoots, branches, and roots generally starting at the tips. ...

Diploid Reviewed: March 2023 Having a double set of chromosomes (2 n chromosomes) per cell. ...

Disease Reviewed: March 2023 The sum of the deviations of the vital functions beyond the latitude of health. (This is just one of many definitions of disease.) ...

Disinfectant Reviewed: March 2023 Any agent for destroying the causal agent of disease after infection. ...

Disinfestant Reviewed: March 2023 Any agent that removes, kills, or inactivates disease-causing organisms before they can cause infection. ...