Earth & Environmental Sciences
cactus
100%
soil emission
91%
fertility
71%
crop
49%
maize
42%
total organic carbon
31%
soil
29%
soil respiration
23%
oak
13%
manure
13%
pine
11%
weed control
9%
mulching
9%
monoculture
8%
fallow
7%
soil fertility
7%
tillage
7%
forest soil
6%
respiration
6%
moisture
5%
atmosphere
4%
world
3%
Agriculture & Biology
soil fertility
63%
total organic carbon
48%
crops
36%
soil
34%
corn
33%
soil respiration
28%
Mexico
18%
coniferous forests
16%
Quercus
13%
Agave
10%
composted manure
10%
Opuntia
9%
arable soils
8%
forest soils
8%
mulching
8%
conventional tillage
8%
Vicia faba
8%
fallow
7%
management systems
7%
animal manures
7%
weed control
7%
highlands
6%
legumes
6%
Engineering & Materials Science
Crops
75%
Soils
53%
Organic carbon
37%
Manures
13%
Weed control
8%
Field emission
6%
Moisture
4%
Fluxes
3%
Chemistry
Soil
57%
Soil Respiration
41%
Organic Carbon
37%
Tillage
13%
Soil Fertility
11%
Weed Control
11%
Field Emission
6%
Reduction
3%