Turning Qatari sand into soil

The problem is not only that sand is poor in nutrients — it is that sand does not hold water. You water in the morning and it is a metre down within minutes, far below the roots of a two-week-old plant. The result is a thirsty plant in soil you just watered.

The fix: organic matter

Add at least 5 kg of well-rotted manure or compost per square metre and work it into the top 30 cm. Organic matter acts as a sponge, holding water and nutrients and releasing them slowly. Do it every season: Qatar’s heat breaks organic matter down about three times faster than a temperate climate does.

Alkalinity and iron

Qatari soil sits between pH 7.5 and 8.5 — alkaline enough to lock iron away even when it is present. Yellow leaves with green veins are not a feeding problem, they are an alkalinity problem. Add agricultural sulphur or chelated iron, and above all add organic matter, which lowers pH naturally over time.

Raised beds

Much of Qatar has a hard calcareous layer 30–50 cm down. If your spade hits it, do not fight it — build a 40 cm raised bed on top and fill it with a good mix. That one change turns carrots from an impossible crop into an easy one.