Earth & Environmental Sciences
growth response
100%
manure
76%
maize
71%
ash
65%
phosphorus
57%
soil
34%
fertilizer
30%
tissue
12%
superphosphate
12%
potassium chloride
11%
nutrient content
10%
dry matter
10%
incineration
9%
rate
8%
alternative energy
8%
field study
7%
potassium
7%
trace element
6%
crop
6%
nutrient
5%
sand
5%
biomass
5%
sampling
5%
Agriculture & Biology
poultry manure
88%
ash (inorganic matter)
81%
phosphorus
59%
corn
49%
soil
40%
fertilizers
30%
triple superphosphate
13%
potassium chloride
11%
renewable energy sources
11%
field crops
10%
dietary minerals
10%
phytomass
9%
animal manures
9%
tissues
8%
plant development
8%
nutrient content
8%
plant response
8%
sand
8%
plant height
8%
Zea mays
8%
potassium
7%
greenhouses
7%
uptake mechanisms
6%
nutrients
5%
extracts
5%
sampling
3%