Earth & Environmental Sciences
international trade
100%
animal production
80%
animal
59%
nitrogen
57%
food
56%
food supply
53%
soybean
51%
livestock
45%
production system
44%
maize
42%
import
41%
manure
39%
empirical analysis
38%
surplus
37%
phosphorus
34%
Gross Domestic Product
33%
population density
29%
resource depletion
21%
agricultural product
19%
fertilizer
19%
crop production
17%
food security
16%
environmental pollution
15%
nutrient balance
13%
sustainable development
12%
regional regulation
11%
regulation
11%
protein
11%
nutrient
10%
zoonosis
9%
agricultural production
9%
agglomeration
9%
methodology
9%
nutrient loss
8%
environmental burden
8%
smallholder
8%
biodiversity loss
8%
poultry
7%
spatial variation
7%
environmental impact
7%
simulation
6%
cattle
6%
pig
6%
modeling
6%
productivity
6%
eutrophication
6%
greenhouse gas emissions
6%
diet
5%
income
5%
developing world
5%
Agriculture & Biology
phosphorus
70%
animal production
61%
international trade
56%
nitrogen
48%
production technology
45%
livestock
39%
nutrients
36%
soybeans
35%
corn
29%
biogeochemical cycles
26%
crop production
26%
animal manures
25%
animals
25%
global change
22%
surpluses
20%
nitrogen cycle
15%
corporations
13%
photosynthetically active radiation
13%
nutrient balance
12%
food production
11%
nutrient management
11%
cadmium
10%
spatial variation
10%
magnesium
10%
manure storage
10%
growth and development
9%
diet-related diseases
9%
animal manure management
9%
carbon dioxide
9%
environmental impact
9%
imports
9%
potassium
8%
metals
8%
Argentina
8%
foods
8%
small farms
8%
swine production
8%
eutrophication
7%
poultry production
7%
zoonoses
7%
greenhouse gas emissions
7%
surface water
7%
antibiotic resistance
6%
developing countries
6%
recycling
6%
human health
6%
Brazil
6%
soil
6%
income
5%
ammonia
5%