Long term research on conservation agriculture (CA) in rice-wheat systems
- Objective
- A long-term conservation agriculture (CA) based research trials was established during 2006 to address these challenges with the following objectives: 1. Develop resource use efficient management options for RW system for resource poor farmers of Eastern Gangetic plains of South Asia. 2. Monitor short, medium and long-term effects of tillage and residue management on soil health 3. Monitor GHG mitigation/C-Sequestration under different tillage, residue management practices
- Description
- Resources (water, energy and labour) scarcity, increasing cost of production, diminishing farm profits and uncertain weather events are major challenges faced by the farmers under intensive conventional tillage based rice-wheat (RW) production system of IGP in south Asia. In eastern Indo-Gangetic Plains (IGP), rice planting time with conventional tillage based system is uncertain due to erratic rainfall behaviour leading to delayed harvest of rice which resulted in to late planting of wheat. The shorter wheat cycle coupled with delayed planting coincides with high temperature at grain filling stage leading to large yield penalty due to terminal heat stress.
- Data Access Statement
- Available to any researcher on request
- Data license
- No data license
- Data policy
- https://www.cimmyt.org/content/uploads/2019/04/CIMMYT-Research-Data-and-Information-Product-Management-policy-2019-01.pdf
- Organizations
- International Maize and Wheat Improvement Centerresearch organisationDr. Rajendra Prasad Central Agricultural Universityresearch organisation
- People
- Dr M L Jatprincipal investigatorCIMMYTDr R K Jatexperiment managerCIMMYT
Site: Pusa
- Type
- research station field
- Location
- PusaBiharIndia
- Geographic location
- 25.980617, 85.675197
- Elevation
- 52 Metres
- Visits permitted?
- No
- History
- The experimental area had been under an intensive tillage‐based rice wheat rotation system for more than 50 years.
- Soil type
- luvisol
- Soil description
- The soil of the experimental site was classified as Illitic Ustic Typic Calciorthent according to the soil taxonomy of USDA. Soil properties from https://onlinelibrary.wiley.com/doi/full/10.1111/sum.12331
- Soil properties
Variable Depth Value (range) Units Ref year Estimated? Baseline? soil organic carbon 0 – 60 Centimetres 0.41 Percent 2006 soil pH 0 – 60 Centimetres 8.6 2006 plant available nitrogen 0 – 60 Centimetres 112 milligram per kilogram 2006 plant available phosphorous 0 – 60 Centimetres 14 milligram per kilogram - Climatic type
- humid subtropical climate
- Climate properties
Variable Time period Value (range) Units air temperature 26 (19 – 32) degree Celsius precipitation 1300 (700 – 1500) millimeter sun hours 6
Design period: (2006—)
- Design Type
- Randomized complete block design
- Description
- Plots measure 20 x 23 m
- Design description
- The long‐term experiment was established in summer 2006 involving eight combinations of tillage, crop establishment and residue management practices in a rice wheat rotation.
- Number of plots
- 24
- Number of replicates
- 3
- Number of harvests per year
- 2
- Crops
Crop Years grown rice wheat - Factors
- Factor name
- Factor levels
- tillage process Plot application: Whole plot
conventional tillage
Applied to crop: wheatno-till
Applied to crop: All cropsCrop seeds were direct drilledpuddling
Applied to crop: riceRice was transplanted- crop residue management process Plot application: Whole plot
95% residues removed for both crops
50% rice residues removed and 75% wheat residues removed
- Measurements
Variable Material Units Frequency Scale Comment grain yield trait All crops t/ha annual soil organic carbon Soil %