Earth & Environmental Sciences
nutrient balance
100%
oasis
81%
nutrient cycling
77%
mountain
46%
surplus
37%
nutrient
34%
fixation
34%
manure
33%
irrigation
27%
phosphorus
25%
mineral fertiliser
22%
alfalfa
21%
dry matter
20%
fallow
20%
wheat
16%
potassium
14%
incorporation
14%
GIS
13%
leaching
13%
sustainability
13%
agriculture
12%
nitrogen
10%
loss
9%
product
8%
water
5%
Agriculture & Biology
oases
92%
Oman
91%
nutrient balance
90%
biogeochemical cycles
79%
mountains
58%
cropland
42%
groves
42%
Phoenix dactylifera
28%
surpluses
25%
nutrients
21%
phosphorus
17%
Triticum
14%
mineral fertilizers
12%
fallow
12%
Medicago sativa
12%
irrigation water
11%
leaching
11%
alfalfa
10%
irrigation
9%
potassium
8%
agriculture
8%
wheat
7%
nitrogen
6%