Author: Debashish Sen Title: Trial Results of SRI Methods for Maize Organization: People's Science Institute Date: 2009

1. People’s Science InstitutePeople’s Science Institute
Dehra Doon, UttarakhandDehra Doon, Uttarakhand
Trial Results of SRITrial Results of SRI
Methods for MaizeMethods for Maize

2. SRI : Practices and PrinciplesSRI : Practices and Principles
RECOMMENDED PRACTICES PRINCIPLES
1 Transplanting of young seedlings Utilizing early vigour of young
seedlings
2 Wider spacing Reducing competition for light and
nutrients
3 Single seedling per hill Reducing external inputs in form of
seeds, water, etc
4 Alternate wetting and drying with
shallow irrigation
Keeping soil from becoming anoxic
5 Inter-cultivation with weeder Promoting healthy root growth
6 Addition of organic matter Increasing soil microbial activity
and enhancing soil organic matter
SRI’s package of practices involving sustainable management of plants, soil,SRI’s package of practices involving sustainable management of plants, soil,
water and nutrients resulting in higher production with reduced externalwater and nutrients resulting in higher production with reduced external
inputs has been extrapolated to other crops such as Maizeinputs has been extrapolated to other crops such as Maize

3. Adaptations for MaizeAdaptations for Maize
Practice Conventional SCI Maize
Young
Seedling
Direct seed
sowing
Direct seed
sowing in line
Spacing Broadcasting P to P : 30-40 cm; R to R : 30-40 cm
Single seedling/hill - 1-2 seeds/hill
Inter-culture 1+ (manual weeding) 3+ (manual weeding)
Organic matter Compost Compost, PAM
Particulars Maize (2009)
Conven. SCI
Avg. no. of cobs/plant 2 3
Average plant height (cm) 142 177
Average no. of corns /cob 230 380
Average No. of corns/plant 460 1140
Grain yield (T/ha) 2.0 3.5
% increase in grain yield - 75

4. Coverage under SCI Maize and PerformanceCoverage under SCI Maize and Performance
Year
SCI Maize Grain Yields
Total
Farmers
Area
(in Ha)
Conventional
(T/ha)
SCI
(T/ha)
%
Increase
2009 183 10.34 2.0 3.5 75
2010 582 63.61 2.3 4.7 104

5. Results of Trials on Maize with Different Spacing (cm)
Parameters Average Plant
Height (cm)
Average
Grains/Cob
Average Cob
Length (cm)
Grain Yield
(T/Ha)
50-50 x 50-50 (T-1) 185 322 25 5.7
40-40 x 40-40 (T-2) 192 356 29 6.5
30-30 x 30-30 (T-3) 187 297 23 5.8
Line sowing ( T-4) 193 255 20 4.8
Farmers’ practice (T-5) 155 191 17 2.3
Note: Line-to-line 30 cm
Results of Trials on Maize with Different No. of Seeds
Parameters Average Plant
Height (cm)
Average
Grains/Cob
Average Cob
Length (cm)
Grain Yield
(T/Ha)
One seed (T-1) 227 341 28 6.1
Two seeds (T-2) 188 309 25 5.3
Farmers' practice (T-3) 171 215 20 2.8
Note: Line-to-line 40 cm, Plant-to-plant 40 cm

6. 653, Indra Nagar653, Indra Nagar
Dehra Doon - 248 006Dehra Doon - 248 006
UttarakhandUttarakhand
INDIAINDIA
WebWeb : www.peoplesscienceinstitute.org: www.peoplesscienceinstitute.org
MailMail : psiddoon@gmail.com: psiddoon@gmail.com
PhonePhone : +91 135 2763649: +91 135 2763649
FaxFax : +91 135 2763186: +91 135 2763186
Thank YouThank You

7. 653, Indra Nagar653, Indra Nagar
Dehra Doon - 248 006Dehra Doon - 248 006
UttarakhandUttarakhand
INDIAINDIA
WebWeb : www.peoplesscienceinstitute.org: www.peoplesscienceinstitute.org
MailMail : psiddoon@gmail.com: psiddoon@gmail.com
PhonePhone : +91 135 2763649: +91 135 2763649
FaxFax : +91 135 2763186: +91 135 2763186
Thank YouThank You