Read the passage:
'The Harmattan is a dry, dusty northeasterly trade wind that sweeps across West Africa from the Sahara Desert between late November and mid-March. Bringing sudden drops in ambient humidity and substantial diurnal temperature fluctuations, the wind carries plumes of fine mineral dust that reduce horizontal visibility and create a persistent atmospheric haze. While the arid conditions facilitate the sun-drying of harvested crops like cocoa and millet, the low moisture levels cause respiratory ailments, cracked skin, and heightened bushfire risks in the savanna.'

Which practical agricultural benefit of the Harmattan is highlighted in the text?