AICRP-LTFE Coimbatore
This experiment has been added by the GLTEN Curators using existing published sources.
- Objective
- To study the long-term impacts of fertilizers on soil quality, crop productivity and sustainability.
- Description
- To study the impact of chemical fertilizer on productivity and soil quality, the Indian Council of Agricultural Research launched the All India Coordinated Research Project on Long-Term Fertilizer Experiments (AICRP-LTFE) in September 1970 at 11 centres. The network has been enlarged since and currently has 17 experiments located in different agroecological zones (AEZ) with important cropping systems. The network aims to monitor the changes in soil properties and yield responses and soil environment due to continuous application of plant nutrient inputs through fertilizers and organic sources, and also to develop strategies and policies for rational use and management of fertilizers to improve soil quality and to minimize environmental degradation.
- Data Access Statement
- Don't know
- Data license
- Don't know
- Data policy
- Don't know
- Organizations
- Indian Council of Agricultural Researchresearch organisationAll India Coordinated Research Project on Long-Term Fertilizer Experimentsresearch network
- Person
- Dr K. Arulmozhiselvenexperiment managerTamil Nadu Agricultural UniversityDepartment of Soil Science and Agricultural Chemistry
Site: Coimbatore
- Type
- research station field
- Location
- CoimbatoreTamil NaduIndia
- Geographic location
- 11.0135657, 76.935421
- Elevation
- 426 Metres
- Visits permitted?
- No
- Soil description
- Soil type is Inceptisols with taxonomic class Vertic Ustopept.
Design period: (1971—)
- Design Type
- Randomized complete block design
- Number of plots
- 40
- Number of replicates
- 4
- Number of harvests per year
- 2
- Crops
Crop Years grown finger millet maize - Factors
- Factor name
- Factor levels
- nitrogen fertilizer exposure Factor levels are percentages of recommended doses.
50% (45, 67.5 kgN/ha)
Applied to crop: All crops45 kg N ha-1 to finger millet and 67.5 kg N ha-1 to maize100% (90, 135 kgN/ha)
Applied to crop: All crops90 kg N ha-1 to finger millet and 135 kg N ha-1 to maize150% (135, 202.5 kgN/ha)
Applied to crop: All crops135 kg N ha-1 to finger millet and 202.5 kg N ha-1 to maize- phosphate fertilizer exposure Factor levels are percentages of recommended doses.
50% (10, 14.5 kgP/ha)
Applied to crop: All crops10 kg P ha-1 to finger millet and 14.5 kg P ha-1 to maize100% (20, 29 kgP/ha)
Applied to crop: All crops20 kg P ha-1 to finger millet and 29 kg P ha-1 to maize150% (30, 43.5 kgP/ha)
Applied to crop: All crops30 kg P ha-1 to finger millet and 43.5 kg P ha-1 to maize- potassium fertilizer exposure Factor levels are percentages of recommended doses.
50% (7, 14.5 kgK/ha)
Applied to crop: All crops7 kg K ha-1 to finger millet and 14.5 kg K ha-1 to maize100% (14, 29 kgK/ha)
Applied to crop: All crops14 kg K ha-1 to finger millet and 29 kg K ha-1 to maize150% (21, 43.5 kgK/ha)
Applied to crop: All crops21 kg K ha-1 to finger millet and 43.5 kg K ha-1 to maize- pest control process
hand weeding process
- natural fertilizer exposure
farmyard manure (12.5 t/ha)
Chemical form: farmyard manure- zinc nutrient exposure
zinc
Chemical form: zinc sulfate- sulfate fertiliser exposure
Sulfur free NPK source
- Factor combinations
- T1: 50% NPK
- nitrogen fertilizer exposure: 50%phosphate fertilizer exposure: 50%potassium fertilizer exposure: 50%
- T2: 100% NPK
- nitrogen fertilizer exposure: 100%phosphate fertilizer exposure: 100%potassium fertilizer exposure: 100%
- T3: 150% NPK
- nitrogen fertilizer exposure: 150%phosphate fertilizer exposure: 150%potassium fertilizer exposure: 150%
- T4: 100% NPK + hand weeding
- nitrogen fertilizer exposure: 100%phosphate fertilizer exposure: 100%potassium fertilizer exposure: 100%pest control process: hand weeding process
- T5: 100% NPK + Zinc
- nitrogen fertilizer exposure: 100%phosphate fertilizer exposure: 100%potassium fertilizer exposure: 100%zinc nutrient exposure: zinc
- T6: 100% NP
- nitrogen fertilizer exposure: 100%phosphate fertilizer exposure: 100%
- T7: 100% N
- nitrogen fertilizer exposure: 100%
- T8: 100% NPK + FYM
- nitrogen fertilizer exposure: 100%phosphate fertilizer exposure: 100%potassium fertilizer exposure: 100%natural fertilizer exposure: farmyard manure
- T9: 100% NPK sulfur free source
- sulfate fertiliser exposure: Sulfur free NPK source
- T10: Control Unmanured
- Measurements
Variable Material Units Frequency Scale Comment grain yield trait All crops soil properties Soil
Related publications
- Project Report 2020
- Singh M., Wanjari R.H., Kumar U. (2021) Long-Term Fertilizer Experiments in India: Achievements and Issues for Future Research. In: Rakshit A., Singh S., Abhilash P., Biswas A. (eds) Soil Science: Fundamentals to Recent Advances. Springer, Singapore https://doi.org/10.1007/978-981-16-0917-6_39 [In English]
- Wanjari R.H., Singh M. (2019) Soil Sustainability and Quality Assessment from Long Term Fertilizer Experiments: A Step Forward to Improve and Revive Crop Productivity and Soil Health. PKV Res. J. Vol. 43 (1)
- Singh M., Wanjari R.H. (2015) Potassium response and requirement in crops grown in Vertisols: experiences from long term fertilizer experiment. JNKVV Res J 49(3): 272-279 (2015)