Subtopic: Functional requirements, principles of working, construction and operation of manual, animal, tractor and renewable energy operated equipment for tillage, sowing, planting, fertilizer application, inter-cultivation, spraying, mowing, chaff cutting, harvesting and threshing
Question Statement:
Flame weeding equipment controls weeds in organic farming systems by:
Options:
(A) Exposing weeds to intense propane burner heat for a fraction of a second to coagulate plant cell proteins
(B) Burning weeds to ash
(C) Heating soil to $500^\circ\text{C}$
(D) Creating sparks to detonate seeds
Answer Key:
A
Step-by-Step Solution & Explanation
Flame weeding relies on thermal rupture of plant cell walls without consuming plant tissue by fire.