This study examines greenhouse gas emissions in a rice-chickpea cropping system using different nutrient management practices. The study hypothesizes that substituting part of the nutrient requirement with organic manures can reduce greenhouse gas emissions without compromising crop productivity. The objectives are to evaluate the effects of nutrient management on the cropping system performance, greenhouse gas emissions from decomposition and crop growth, and post-rainy crop growth without additional fertilizers. The study involves a field experiment comparing farmer practice to treatments substituting 25% of recommended nitrogen dose with vermicompost, farmyard manure, or poultry manure during the rainy season rice crop. Data on greenhouse gas emissions, crop growth, yield, nutrients

1. Study on Greenhouse Gas Emissions
in Rice-Chickpea Cropping System
KURKU MAMATHA
RESEARCH SCHOLAR
ICRISAT

2. BACKGROUND
Ø Rice (Oriza sativaL.) is one of the most important staple food crop in
the world.
Ø In Asia, more than two billionpeople are getting 60-70 per cent of
their energy requirement from rice and its derived products.
Ø Rice occupies an area of 45 millionhectares with an average
production of 106.19 milliontones with productivityof 2976 kg ha-1.
Ø Danger of salinityin rice growing areas.
Ø Chickpea grown in 81.9 lakh hectares area with a productionof 71 lakh
production and productivityof 875 kg ha-1 in India.

3. HYPOTHESIS
Substituting a part of nutrient requirement from organic manures
reduce greenhouse gas emissions without compromising on
system productivity of Rice-Chickpea Cropping system

4. OBJECTIVES OF RESEARCH
1) Do different nutrient management practices effect performance of Rice-Chickpea
cropping system?
2) Do diurnal atmospheric variation effect greenhouse gas emissions?
3) Do estimation of GHG emissions from decomposition and in crop growth period
help to find out effective quantification of GHG emissions?
4) Do chemical and organic residues from the rainy season allow post rainy crop to
grow without addition of chemical fertilizers?

5. Rice –Chickpea Cropping System
GHG Emissions Crop Growth Crop Yield Economics
FIRST YEAR (EXPERIMENT)
SECOND YEAR (CONFIRMATION STUDIES)
Rice –Chickpea Cropping System
GHG Emissions Crop Growth Crop Yield Economics

6. Technical programme of work for rainy season
Location : ICRISAT, Patancheru
Season : Rainy season 2017 &2018
Crop : Rice
Variety : Batukamma (JGL-18047)
Treatments : 4
Replications : 5
Design : Randomized Block Design
METHODS

7. Treatments
T1 - Farmer practice (Recommended Dose of Fertilizer 120-60-40 kg NPK ha-1)
T2 – 25% of RDN through Vermi compost + 75% RDF from chemical fertilizers
T3 – 25% of RDN through Farmyard Manure + 75% RDF from chemical fertilizers
T4 – 25% of RDN through Poultry manure + 75% RDF from chemical fertilizers
Note: All organic manures will be tested for their NPK contents

8. Field experiment during Post rainy season
Technical programme of work
Location : ICRISAT, Patancheru
Season : Post rainy season 2017 &2018
Crop : Chickpea
Variety : JG 11
Treatments : 4
Replications : 5
Design : Randomized Block Design
Gross plot size : 6m x 6m
Net plot size : 4.8 x 5.6 m
Treatments
No treatment will be imposedin post rainy season. Crop has to be grown on residual nutrients available
from the previous treatment.

9. DATA TO BE COLLECTED FROM RAINY CROP AND POST RAINY CROP
1. Greenhouse Gas Emissions during composting process.
2. Estimation of Greenhouse Gas Emissions from the crop.
3. Crop Growth Parameters.
4. Yield parameters and yield.
5. Nutrient analysis of soil and plant samples.
6. Economics.

10. SUMMARY
From the preliminary results from experiment
indicating that Farmyard manure and poultry manure
can substitute a part of chemical fertilizers.

12. TRAINING ON HANDLING WITH HIGH FREQUENCY
AUTOMATED SAMPLING SYSTEM