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.
Farm operation data?
Sample archive?
Samples available?
 
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 Center
research organisation
Dr. Rajendra Prasad Central Agricultural University
research organisation
People
Dr M L Jat
principal investigator
Dr R K Jat
experiment manager

Site: Pusa

Type
research station field
Location
Pusa
Bihar
India
Geographic location
25.980617, 85.675197
© OpenStreetMap contributors
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
VariableDepthValue (range)UnitsRef yearEstimated?Baseline?
soil organic carbon0 – 60 Centimetres0.41 Percent2006
soil pH0 – 60 Centimetres8.6 2006
plant available nitrogen0 – 60 Centimetres112 milligram per kilogram2006
plant available phosphorous0 – 60 Centimetres14 milligram per kilogram
Climatic type
humid subtropical climate
Climate properties
VariableTime periodValue (range)Units
air temperature26 (19 – 32) degree Celsius
precipitation1300 (700 – 1500) millimeter
sun hours6

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
CropYears grown
rice
wheat
Factors
tillage process
Plot application: Whole plot
conventional tillage
Applied to crop: wheat
no-till
Applied to crop: All crops
Crop seeds were direct drilled
puddling
Applied to crop: rice
Rice was transplanted
crop residue management exposure
Plot application: Whole plot
95% residues removed for both crops
50% rice residues removed and 75% wheat residues removed
Measurements
VariableMaterialUnitsFrequencyScaleComment
grain yield traitAll cropst/haannual
soil organic carbonSoil%