Thyrow Endurance Field Experiments: Static nutrient deficiency test
- Local identifier
- Thy_D4
- Years operational
- 1937—
- Objective
- Influence of long-term differentiated organic and mineral fertilization on soil properties and yield performance of a sandy soil.
- Description
- When the experiment was started in 1937, the aim was to determine which changes occur in the soil and plant as a result of long-term failure to fertilize and limescale, or what maximum yield increase can be achieved by organic-mineral full fertilization. Among other things, the results available over many years make it possible to make statements about the potential for nutrient replenishment and buffering, the yield potential and the carbon storage capacity of this sandy soil typical of the region. In 1949, the experiment was divided into two sections: Section 1 continues unchanged to this day (Thy_D41). On section 2 (Thy_D42) it was examined whether and how quickly the soil fertility on the former deficiency variants can be regenerated by reintroducing fertilization and liming. After that, there was a renewed lack of fertilization, but from 1971 the fertilization was repeated with the introduction of changed fertilization variants. Since this experimental part has not been able to provide any new findings in recent years, it was expanded in 1997 in its question. Since 1997, winter rye has been grown in monoculture on section 2, which means that additional plant cultivation and phytosanitary issues can be dealt with. For fertilization variants, identical to those of section 1, crop rotation effects can be identified in addition to the fertilization effects.
- Data Access Statement
- Don't know
- Data license
- Don't know
- Data policy
- Don't know
- Organization
- Humboldt University Berlin
- People
Site: Thyrow
- Type
- research station field
- Local code
- Thy_D4
- Location
- ThyrowGermany
- Geographic location
- 52.150812, 13.140826
- Visits permitted?
- No
- Soil type
- luvisol
- Soil description
- Albic Luvisol
- Soil properties
Variable Depth Value (range) Units Ref year Estimated? Baseline? sand content 83.1 Percent silt content 16.2 Percent clay content 2.7 Percent soil pH (5.5 – 8)
Design period: First period (1937—1948)
- Design Type
- Latin square
- Description
- The aim when the experiment was set up in 1937 was to investigate in the long term what changes can be seen in soil and plants, if individual macronutrients get to the minimum on a light soil.
- Design description
- Latin square design with eight fertilizer treatments. Treatments were replicated four times in 10×7·2m plots.
- Crops
Crop Years grown potatoes barley maize - Crop Rotation
- Unnamed
- 1potatoes
- 2barley
- 3maize
- 4barley
- Factors
- Factor name
- Factor levels
- farmyard manure exposure
farmyard manure
- nitrogen fertilizer exposure
N60 (60 kgN/ha)
- phosphate fertilizer exposure
P24 (24 kgP/ha)
- potassium fertilizer exposure
K100 (100 kgK/ha)
- calcium nutrient exposure
C250 (250 kg calcium per hectare)
Application frequency: every 3 or 4 years
- Factor combinations
- unfertilized
- fym
- farmyard manure exposure: farmyard manure
- NPKCa + fym
- nitrogen fertilizer exposure: N60phosphate fertilizer exposure: P24potassium fertilizer exposure: K100calcium nutrient exposure: C250farmyard manure exposure: farmyard manure
- NPKCa
- nitrogen fertilizer exposure: N60phosphate fertilizer exposure: P24potassium fertilizer exposure: K100calcium nutrient exposure: C250
- NPK (minus Ca)
- nitrogen fertilizer exposure: N60phosphate fertilizer exposure: P24potassium fertilizer exposure: K100
- NPCa (minus K)
- nitrogen fertilizer exposure: N60phosphate fertilizer exposure: P24calcium nutrient exposure: C250
- NKCa (minus P)
- nitrogen fertilizer exposure: N60potassium fertilizer exposure: K100calcium nutrient exposure: C250
- PKCa (minus N)
- phosphate fertilizer exposure: P24potassium fertilizer exposure: K100calcium nutrient exposure: C250
Design period: Second period: Thy_D41 (D IV/1) (1949—)
- Design Type
- Randomized complete block design
- Description
- In 1949 the experiment was divided into two parts; D IV/1 continued unchanged and D IV/2 was fertilized with P, K and lime until a normal nutrient supply and pH level were achieved.
- Design description
- Randomization limited
- Number of plots
- 32
- Crops
Crop Years grown potatoes maize spring barley winter rye - Crop Rotation
- Unnamed
- 1potatoes
- 2spring barley
- 3maize
- 4spring barley
- Factors
- Factor name
- Factor levels
- liming exposure lime fertilisation as required to maintain pH 5.5-8
lime
- nitrogen fertilizer exposure
N90 (90 kgN/ha)
Applied to crop: All crops- phosphate fertilizer exposure
P24 (24 kgP/ha)
- potassium fertilizer exposure
K100 (100 kgK/ha)
Applied to crop: All crops- farmyard manure exposure
FYM300 (30 t/ha)
Applied to crop: All cropsChemical form: farmyard manure
- Factor combinations
- a1 unfertilized / without lime
- a2 manure / without lime
- farmyard manure exposure: FYM300
- a3 NPK / manure / lime
- nitrogen fertilizer exposure: N90phosphate fertilizer exposure: P24potassium fertilizer exposure: K100farmyard manure exposure: FYM300liming exposure: lime
- a4 NPK / lime
- nitrogen fertilizer exposure: N90phosphate fertilizer exposure: P24potassium fertilizer exposure: K100liming exposure: lime
- a5 NPK / without lime
- nitrogen fertilizer exposure: N90potassium fertilizer exposure: K100potassium fertilizer exposure: K100
- a6 NP / lime
- nitrogen fertilizer exposure: N90phosphate fertilizer exposure: P24liming exposure: lime
- a7 NK / lime
- nitrogen fertilizer exposure: N90potassium fertilizer exposure: K100liming exposure: lime
- a8 PK / lime
- phosphate fertilizer exposure: P24potassium fertilizer exposure: K100liming exposure: lime
- a1
- Measurements
Variable Material Units Frequency Scale Comment yield components Not specified assessment of stock development, yields and yield structure soil nutrients Not specified P, K, Mg soil pH Not specified soil organic carbon Not specified
Design period: Second period: Thy_D42 (D IV/2) (1949—)
- Design Type
- Randomized complete block design
- Description
- In 1949 the experiment was divided into two parts; D IV/1 continued unchanged and D IV/2 was fertilized with P, K and lime until a normal nutrient supply and pH level were achieved. Winer rye monoculture from 1998.
- Design description
- Randomization limited
- Number of plots
- 32
- Crops
Crop Years grown winter rye potatoes maize spring barley - Factors
- Factor name
- Factor levels
- liming exposure lime fertilisation as required to maintain pH 5.5-8
lime
- nitrogen fertilizer exposure
N1 (60) (60 kgN/ha)
N2 (120) (120 kgN/ha)
- phosphate fertilizer exposure
P24 (24 kgP/ha)
- potassium fertilizer exposure
K100 (100 kgK/ha)
- farmyard manure exposure
FYM 150 (15 t/ha)
Chemical form: farmyard manureTo potatoes and maize
- Factor combinations
- a1 unfertilized / without lime
- a2 PK / manure / lime
- phosphate fertilizer exposure: P24potassium fertilizer exposure: K100farmyard manure exposure: FYM 150liming exposure: lime
- a3 N1PK / manure / lime
- nitrogen fertilizer exposure: N1 (60)phosphate fertilizer exposure: P24potassium fertilizer exposure: K100farmyard manure exposure: FYM 150liming exposure: lime
- a4 N2PK / lime
- nitrogen fertilizer exposure: N2 (120)phosphate fertilizer exposure: P24potassium fertilizer exposure: K100liming exposure: lime
- a5 N1PK/lime
- nitrogen fertilizer exposure: N1 (60)phosphate fertilizer exposure: P24potassium fertilizer exposure: K100liming exposure: lime
- a6 N1P / lime
- nitrogen fertilizer exposure: N1 (60)phosphate fertilizer exposure: P24liming exposure: lime
- a7 N1PK / without lime
- nitrogen fertilizer exposure: N1 (60)phosphate fertilizer exposure: P24potassium fertilizer exposure: K100
- a8 N1PK / without lime
- nitrogen fertilizer exposure: N1 (60)phosphate fertilizer exposure: P24potassium fertilizer exposure: K100
- a1
- Measurements
Variable Material Units Frequency Scale Comment yield components Not specified assessment of stock development, yields and yield structure soil nutrients Not specified P, K, Mg soil pH Not specified soil organic matter Not specified
Related publications
- Endurance field tests in Thyrow
- Detailed description and results
- Experimental design
- Long-term effects of soil nutrient deficiency on arbuscular mycorrhizal communities (2012) Antunes et al. Functional Ecology Vol 26 Issue 2 pp 532-540