Landbrug og biologi
Bhutan
100%
highlands
63%
minerals
52%
farms
46%
rice
46%
nitrogen
40%
cultivars
39%
grain yield
36%
bunds
12%
farming systems
12%
household consumption
12%
farmers
10%
socioeconomic factors
10%
farm size
9%
small farms
9%
nutrient use efficiency
8%
harvest index
8%
transplanting (plants)
8%
soil properties
7%
animal manures
7%
soil organic matter
7%
villages
7%
nitrogen fertilizers
7%
straw
6%
Oryza sativa
6%
livestock
6%
economics
5%
nutrients
4%
genotype
4%
crops
4%
Geo- og miljøvidenskab
cultivar
87%
rice
60%
farm
59%
productivity
48%
environmental index
44%
nitrogen
41%
mineral
38%
farming system
16%
effect
16%
mixed farming
12%
farm size
11%
smallholder
9%
socioeconomic factor
9%
dry matter
9%
genotype
8%
straw
7%
manure
7%
soil organic matter
7%
livestock
7%
harvest
6%
soil property
6%
fertilizer
6%
village
6%
household
6%
trial
6%
crop
5%
consumption
5%
nutrient
5%
economics
4%
cost
4%
index
3%
rate
2%