Engineering & Materials Science
Manures
85%
Dairies
84%
Cotton
70%
Soils
47%
Methane
18%
Anaerobic digestion
17%
Biogas
15%
Composting
10%
Waste treatment
9%
Agricultural wastes
9%
Nutrients
8%
Groundwater
7%
Gases
7%
Agriculture
7%
Water
7%
Sodium
6%
Feedstocks
6%
Contamination
6%
Nitrogen
6%
Availability
4%
Medicine & Life Sciences
Manure
98%
Soil
65%
Methane
41%
Biofuels
28%
Digestion
18%
Gases
17%
Composting
16%
Salinity
14%
Groundwater
14%
Water
13%
Agriculture
11%
Nitrogen
9%
Nutrients
8%
Sodium
8%
Earth & Environmental Sciences
soil amendment
72%
cotton
60%
manure
58%
energy
29%
methane
15%
anaerobic digestion
13%
biogas
13%
agricultural waste
8%
waste treatment
7%
composting
7%
gas production
6%
agricultural land
5%
sodium
5%
agriculture
4%
salinity
4%
contamination
4%
nutrient
4%
water
4%
groundwater
4%
nitrogen
4%
land
3%
gas
3%
material
2%
Agriculture & Biology
cotton gin
100%
energy
35%
animal manures
25%
anaerobic digestion
15%
dairies
12%
anaerobic digesters
9%
land application
9%
groundwater contamination
9%
waste treatment
9%
composted manure
8%
agricultural wastes
8%
gas production (biological)
7%
composting
7%
feedlots
7%
agricultural land
6%
feedstocks
6%
water
5%
salinity
5%
gases
5%
sodium
5%
agriculture
4%
nutrients
4%
nitrogen
3%