'Tweed Wonder' is a well-established commercial variety of French bean (Phaseolus vulgaris) recognized for its genetic resistance to bean anthracnose caused by the fungal pathogen Colletotrichum lindemuthianum.
Contender and Kentucky Wonder are popular high-yielding varieties, but Tweed Wonder is specifically known for anthracnose resistance.

Fungal pathogens frequently and rapidly develop resistance against systemic fungicides (e.g. benzimidazoles, phenylamides, strobilurins). Systemic fungicides possess single-site (site-specific) modes of action targeting a single fungal enzyme or biochemical pathway; a single-point gene mutation in the target enzyme often renders the fungicide ineffective. In contrast, multi-site protectant fungicides rarely encounter resistance.

Insects are incapable of synthesizing water-soluble B-complex vitamins (including thiamine, riboflavin, nicotinic acid, pyridoxine, pantothenic acid, folic acid, and biotin) and strictly require them in their diet or from symbiotic gut microflora for normal growth, metamorphosis, and reproduction. Fat-soluble vitamins like A, D, and K are generally not essential for most insects.

Analysis of phytopathogenic organisms:

• Correct: Downy mildew (also known as 'green ear disease') of pearl millet (bajra) is caused by the oomycete biotrophic pathogen Sclerospora graminicola.
• Incorrect: Claviceps fusiformis causes ergot of bajra.
• Incorrect: Agrobacterium tumefaciens is a soil bacterium causing crown gall disease in dicots.
• Incorrect: Erwinia amylovora is the bacterial pathogen causing fire blight in apples and pears.