Breaking each term into its Latin root gives a fast answer: vermi- (worm), seri- (silk), pisci- (fish), arbor- (tree), and since the question is about worms converting organic waste into fertilizer, only the "worm" root fits.
Vermiculture is also the standard term used for earthworm-based composting systems (vermicompost), reinforcing the match.
Therefore, the correct answer is Vermiculture.
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Approach Solution -2
Another approach is to match each cultivation practice with its typical end product.
Vermiculture: Its end product is nutrient-rich vermicompost, an organic fertilizer, exactly the output described in the question.
Sericulture: Its end product is raw silk thread, an entirely different industry from waste management.
Pisciculture: Its end product is farmed fish for food, unrelated to fertilizer production.
Arboriculture: Its end product is healthy, well-maintained trees (for landscaping, timber, or fruit), not compost.
Only vermiculture's end product matches the fertilizer output described in the question.