19.
Use of Irrigation Water for Agriculture
20.
Proportion of Potato Crop Area that is Irrigated
21.
Potato Yields
DISCONTINUED
22.
Warm-weather Crops: Grapes
23.
Warm-weather Crops: Forage Maize
24.
Late Summer Grass Production
25.
Date of Leaf Emergence on Trees in Spring
26.
Health of Beech Trees in Britain
