Agriculture & Biology
elemental composition
98%
soil chemical properties
92%
poultry manure
88%
ash (inorganic matter)
81%
alfalfa
74%
tissues
35%
fertilizers
32%
uptake mechanisms
14%
energy
12%
soil
10%
fertilizer application
10%
ammonium acetate
7%
triple superphosphate
7%
nutrients
6%
fertilizer rates
6%
potassium chloride
6%
power plants
5%
Medicago sativa
5%
citrates
5%
biofuels
5%
sulfur
4%
copper
4%
potassium
4%
sodium
4%
phosphorus
3%
biomass
3%
Earth & Environmental Sciences
alfalfa
100%
manure
77%
soil property
70%
ash
65%
tissue
58%
fertilizer
50%
effect
18%
soil
9%
energy
7%
superphosphate
7%
potassium chloride
7%
nutrient
6%
energy production
5%
acetate
4%
byproduct
4%
power plant
4%
potassium
4%
ammonium
4%
zinc
4%
sulfur
4%
sodium
4%
phosphorus
3%
copper
3%
rate
3%
biomass
3%