Disease. Several different plant diseases lead to various parts of plants turning yellow, most commonly the leaves. Viral diseases such as yellow mosaic cause plant leaves or flowers to turn yellow. Some fungal diseases may also cause yellowing. Rust, for instance, might cause yellow powder to form on the leaves.isease. Several different plant diseases lead to various parts of plants turning yellow, most commonly the leaves. Viral diseases such as yellow mosaic cause plant leaves or flowers to turn yellow. Some fungal diseases may also cause yellowing. Rust, for instance, might cause yellow powder to form on the leaves.
â¢ PLOW (verb) The verb PLOW has 3 senses: 1. to break and turn over earth especially with a plow. 2. deal with verbally or in some form of artistic expression. 3. move in a way resembling that of a plow cutting into or going through the soil. Familiarity information: PLOW used as a verb is uncommon.
Hand Tools. The plough is a farm tool or implement used in farming for initial cultivation of soil in preparation for sowing seed or planting. It consists of a heavy blade at the end of a beam, usually hitched to a draft team or motor vehicle and used for breaking up soil and cutting furrows in preparation for sowing.