Crop Details
Name: Sweet Corn
Scientific Name: Zea mays L.
Family: Poaceae
Origin: Mexico
Variety: Suruchi
Seed Rate: 10 kg/ha
Date of Sowing: 11/11/2024
Spacing: 60 cm x 20 cm
Plot Size: 5m x 4m = 20 m²
Fertilizer Dose: 120-60-60 kg/ha (N-P₂O₅-K₂O)
Plot No.: 26
General Information
Maize is a versatile, monoecious and cross-pollinated crop, known as the “Queen of
Cereals”. In India, it ranks third after wheat and rice. Sweet corn is especially
popular in the USA and Europe.
Land Preparation
Cleared of weeds, rocks, and debris.
Thorough ploughing using power tiller and spade.
Ridges and furrows at 60 cm row spacing.
FYM @10 tons/ha with basal fertilizers during land prep.
Sowing Details
Date: 11/11/2024
Method: Line sowing
Seed Rate: 10 kg/ha
Depth: 5 cm
Spacing: 60 cm x 20 cm
Seed Rate Calculation
For 20 m²:
(10×20)/10,000=0.02kg=20g(10 × 20) / 10,000 = 0.02 kg = 20 g
So, 20 g of seed is used for the 20 m² plot.
Nutrient Management
Recommended fertilizer dose = 120-60-60 kg/ha
N-P2O5- K₂O
FYM requirement = 10 ton/ha
Basal application of 50%N and full doses of K₂O and P2O5
st
1 top dressing-25%N
nd
2 top dressing-25%N
• At the time of sowing, entire dose of fertilizer was applied as basal as follows:
2
• 521g Urea/20m
2
• 750gSSP/20m
2
• 200g MOP/20m
2
• Along with the fertilizer, 8g Zinc Sulphate was applied per 20m
FERTILIZER CALCULATION
UREA
Contains 46% nitrogen
So, urea required/ha = 120 x 100/46 =260.86 kg/ha
2
For 20m area urea required = 260.86/10,000 x 20 =0.521 kg =521g
SSP
SSP contains 16% P2O5
So, SSP required/ha = 60 x 100/16 = 375 kg/ha
2
For 20m area SSP required = 375/10000 x 20 = 0.75 kg=750g
MOP
MOP contains 60% K₂O
So, MOP required/ha = 60 x 100/60 = 100 kg/ha
2
For 20m area MOP required = 100/10000 x 20 = 0.2 kg=200g
ZINC SULPHATE
Recommended dose= 4 kg/ha
2
For 20m area=4/10000X20=0.008kg=8g
APPLICATION:
Basal-full P and K and ½ N
ST nd
1 Top dressing=25%N, 2 Top dressing=25% N
For 1 ha-Basal=130.43kg:375kg:100kg (UREA:SSP:MOP)
st
1 Top dressing-25%=65.21kg of urea
nd
2 Top dressing-25%=65.21kg of urea
2
For 20m basal-260.5g:750g:200g (UREA:SSP:MOP)
st
1 Top dressing-25%=130.25g of urea
nd
2 Top dressing-25%=130.25g of urea
Water Management
STAGE DAS DATE
AT THE TIME OF SOWING 0DAS 11/11/24
AFTER GAP FILLING 14DAS 25/11/24
KNEE HIGH STAGE 28DAS 9/12/24
STEM ELONGATION 45DAS 26/12/24
TASSEL EMERGING STAGE 56DAS 6/1/25
COB DEVELOPMENT 63DAS 13/1/25
Intercultural Operations
Thinning & Gap Filling: At 7 DAS & 14 DAS
Earthing Up: 25 DAS (06/12/24)
Top Dressing:
o 1st: 28 DAS (03/12/24)
o 2nd: 46 DAS (27/12/24)
WEED MANAGEMENT
Herbicide: Pendimethalin @ 6.7 ml/20 m²
o Applied 2 days after sowing
Required dose: 1kg
Pendimethalin 30% EC was applied
Quantity required=1/30 x 100 = 3.33lt/ha
2
For 20m = 3.33/10,000 x 20= 0.0067lit
2
=6.7ml/20m
Disease Observed & Management
Diseases:
Management:
o Curex @3 ml/l
o Copper Oxychloride 50% WP
o Mancozeb 75% WP
o Agastya @3 ml/l
Insect Observed & Management
Insect: Fall armyworm (Spodoptera litura)
Control:
o Emamectin Benzoate @1 g/l
o Monocrotophos (Aalphos) @1 ml/l
Growth Parameters
Plant Height
(27/01/25) (5/02/25) (10/2/25)
77 DAS 86 DAS 91 DAS
Plant Height No. of Height No. of Height No. of
(in cm) leaves (in cm) leaves (in cm) leaves
P1 138cm 7 152cm 7 198cm 8
P2 152cm 8 160cm 9 199cm 10
P3 159cm 8 178cm 9 200cm 10
P4 166cm 9 180cm 9 202cm 10
P5 192cm 9 200cm 10 234cm 11
DURATION 77 DAS 86 DAS 91DAS
Average plant 161.4 174 206.6
height(in cm)
Average no. of 8.2 8.8 9.8
leaves
Tassel Length
PLANT TASSEL LENGTH
P1 40cm
P2 43cm
P3 42cm
P4 43cm
P5 41cm
AVERAGE 41.8cm
Leaf Area Index (LAI):
Measurement Large Medium Small
parameters
Length(in cm) 94cm 62cm 38cm
Width(in cm) 7.5cm 6.3cm 4cm
2 2 2 2
Area(in cm ) 705cm 390.6cm 152cm
o Average actual leaf area: 415.86 cm²
o Leaves per plant: 7
o Correction factor: 0.72
o LAI = 2.42; Actual LAI = 1.74
o LAI after 82 DAS = 2.85
o
Harvesting
Date: 98 DAS (17/02/25)
Cobs harvested and graded into Grade-I and Grade-II for sale
CROP CALENDER
activity DAS Anticipated Actua Input requirment
date l date
Land 2 days before sowing 9/11/24 9/11/24 Ploughing,Labelling,Weeding,
preparation Ridges and furrow were made
Plan of 4 days before sowing 7/11/24 7/11/24 Hybrid var.-Indum Suruchi
sowing Seed rate -10kg/ha
2
For 20m -20g
Line sowing done
Manure On the day of sowing 11/11/24 11/11/2 Well rotten FYM was applied at
application 4 the time of sowing
Seed _ _ _ Treated seeds were used
treatment
Seed sowing _ 11/11/24 11/11/2 Line sowing,Spacing
4 60X20cm light irrigation
Gap filling 7 DAS 18/11/24 18/11/2 Removal of excess plants for
and 14 DAS 24/11/24 4
proper growth and
thinning 25/11/2
4 development
Fertilizer Time of sowing 11/11/24 11/11/24 N:P2O5:K₂O-120:60:60
Requirement
(basal dose)
Top dressing 28 DAS 9/12/24 9/12/24 For 20m 2,1st top dressing
46 DAS 27/12/24 27/12/24 130.25gm of urea and for 2nd
130.25g of urea
Water Time of sowing 11/11/24 11/11/24 Light irrigation
management
14 DAS 15/11/24 15/11/24 After gap filling
28 DAS 9/11/24 9/11/24 knee high stage
45 DAS 26/12/24 26/12/24 Stem elongation
56 DAS 6/1/25 6 /1/25 Tasseling stage
63DAS 13/1/25 13/1/25 Cob development
Weed
management 2 DAS 13/11/24 13/11/24 Pendimethalin @ 6.7ml
18 DAS 5/11/24 6/12/24 Earthing up
Pest and 22 DAS 3/12/24 Monocrotophos 36% S.L@1ml/l
disease
management 26 DAS _ 7/12/24 Ematin,copper
oxychloride@3ml/l,
43DAS _ 24/12/24
MANCOZEB 75%W.P.@3ml/l
17/2/25
Emamectin benzoate 5%
_ SG@1g/l
Harvesting 98 DAS 15/2/25 18/2/25 Harvesting was done using
Hand twistingand man power so,
80 number of cobs were obtained
Post harvesting 99 DAS _
Grading and sorting of cobs were
done according to their size and
weight
Grade-1(45) Grade-2(35)
COST OF CULTIVATION
SL.NO OPERATION PARTICULAR QUANTITY RATE AMOUNT in
Rs)
A Seeds Cost of Seeds 10kg/ha Rs.670/250g 26,800/-
B. Land preparation Tractor 4hrs 1000/hr 4,000/-
Cross ploughing 15Mandays Rs.450/manday 6,750/-
+ levelling +
layout + seed
sowing + manure
+ fertilizer
application
FYM 10t/ha Rs.1000/ton 10,000/-
Urea 260.87kg/ha Rs.10/kg 2,608.7/-
SSP 375kg/ha Rs13/kg 4,875/-
MOP 100kg/ha Rs.16/kg 1,600/-
Zinc sulphate 4kg/ha Rs.165/kg 660/-
c. Weed Pendimethalin 3.33l/ha Rs.390/500ml 2,600/-
Management
Application cost 1mandays Rs.450/manday 450/-
D. Intercultural Gap filling 1mandays Rs.450/manday 6,300/-
operations
Earthing up 13 mandays 900/-
+weeding
2 mandays
Top dressing
E. Irrigation 6 times 4hr/irrigation Rs.100/hr 2,400/-
Application cost 6 mandays Rs.450/day 2700/-
F. Plant protection Monocrotophous 500ml/ha 253/250ml 506/-
Copper 1500ml/ha Rs.625/500g 1,875/-
oxychloride
Ematin 1kg/ha Rs.352/50g 7,040/-
Mancozeb 1500ml/ha Rs.108/100g 1,620/-
Application cost 5 mandays Rs.450/day 2,250/-
G. Harvesting Manpower 15mandays Rs.450/day 5400/-
Grading 5 mandays Rs.450/manday 2250/-
H. Land rent Land rent 6months Rs.2000/year 1000/-
TOTAL:- Rs. 94,524.7
Plant Population
Plot Area: 5m x 4m = 20 m²
Spacing: 0.6 m x 0.2 m
Estimated Population: 167 plants
Actual: 8 rows × 14 plants = 112 plants
Yield Calculation
Actual Yield (20 m²):
o Grade-I: 45 cobs
o Grade-II: 35 cobs
o Total: 80 cobs
Estimated Yield:
Plant population = Area/spacing = 166.67
No. of cobs/ pant = 1
No. of seed /cob = 546
Test wt. /1000 = 28.19 /1000 = 0.028 g
Estimated yield = 166.67 x 1 x 546 x 0.028
= 2,548.05g
Return Per Rupee Investment
2
Total no. of cobs in 20m = 80
Total no. of cob in 1 ha =40,000
Price of cob = Grade I = 10/- Grade II = 7/-
Gross return = No. of cobs x Selling price
= 22,500 X 10 + 17,500 X 7
=2,25,000 + 1,22,500 = 3,47,500/-
Net return = Gross return – Cost of cultivation
= 3,47,500– 94,524 .7
= 2,52,975.3/-
Benefit cost ratio = Net return / Cost of cultivation
= 2,53,765.3 / 94,524.7
= 2.6
Return per rupee investment = Gross return / Cost of cultivation
= 3,47,500 / 94,524.7
= 3.6
Since, the Benefit cost ratio is more than 1, the production is profitable.
