Landbrug og biologi
drainage
98%
Vietnam
76%
methane
71%
production technology
65%
water management
60%
rice
60%
Zea mays
60%
zinc
58%
grain yield
58%
nitrous oxide production
49%
corn
48%
agricultural colleges
47%
paddy soils
47%
nitrous oxide
47%
stakeholders
40%
Pakistan
40%
foliar application
39%
soil treatment
38%
nutrition
34%
farmers
34%
case studies
31%
greenhouse gas emissions
30%
greenhouse gases
28%
management systems
21%
soil
20%
nitrogen fertilizers
16%
Geo- og miljøvidenskab
coppice
100%
drainage
81%
methane
58%
soil drainage
50%
rice
48%
carbon sequestration
45%
plantation
44%
monoculture
44%
soil
43%
production system
43%
nitrous oxide
41%
maize
40%
soil carbon
39%
crop
39%
carbon
38%
water management
35%
soil property
32%
incorporation
30%
zinc
29%
straw
26%
biomass
24%
arable land
23%
economics
23%
planting
22%
fertilizer
21%
sampling
20%
wild fauna
20%
wood product
15%
Teknik og materialevidenskab
Soils
57%
Carbon
55%
Aquifers
47%
Nitrates
46%
Groundwater
43%
Drainage
39%
Rivers
36%
Methane
34%
Sampling
22%
Straw
16%
Biomass
16%
