DATA SHEET 1
Determination ETo: Pan Evaporation Method
Location: ..........
Date: .......
Type of evaporation pan: ..............
Month: .............
|
Day |
Water depth (mm) |
Rainfall (mm) |
E pan (mm) |
Day |
Water depth (mm) |
Rainfall (mm) |
E pan (mm) |
|
1 |
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17 |
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2 |
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18 |
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3 |
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19 |
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4 |
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20 |
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5 |
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21 |
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6 |
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22 |
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7 |
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23 |
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8 |
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24 |
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9 |
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25 |
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10 |
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26 |
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11 |
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27 |
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12 |
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28 |
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13 |
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29 |
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14 |
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30 |
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15 |
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31 |
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16 |
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|
1 (next month) |
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| |
Note: The difference in water depth between day 1 and 2 plus the rainfall during day 1 is the E pan for day 1
Calculate:
Sum E pan = ............. mm/monthnumber of days in month = ..........
K pan = ...........
ETo = K pan × E pan = ...... × ...... = ...... mm/day
DATA SHEET 2
Calculation of the mean
monthly temperature: T max and T min
Location: ..........
Date: .......
Month: ..........
Number of days in the month: ..........
|
Day |
T max (°C) |
T min (°C) |
Day |
T max (°C) |
T min (°C) |
|
1 |
|
|
16 |
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|
2 |
|
|
17 |
|
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|
3 |
|
|
18 |
|
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4 |
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19 |
|
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5 |
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20 |
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6 |
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21 |
|
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7 |
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22 |
|
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8 |
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23 |
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9 |
|
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24 |
|
|
|
10 |
|
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25 |
|
|
|
11 |
|
|
26 |
|
|
|
12 |
|
|
27 |
|
|
|
13 |
|
|
28 |
|
|
|
14 |
|
|
29 |
|
|
|
15 |
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30 |
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31 |
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|
Calculate:
Sum T max = ..............Sum T min = ..............
DATA SHEET 3
Determination ETo: Blaney-Criddle Method
Location: ...............
Date: ......
Latitude: ...................º North/º South
|
Month |
T min (°C) |
T max (°C) |
T mean (°C) |
P Table 4 |
ETo mm/day |
|
Jan |
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Feb |
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Mar |
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Apr |
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May |
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Jun |
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Jul |
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Aug |
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Sep |
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Oct |
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Nov |
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Dec |
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Note:
DATA SHEET 4
Determination of crop factors
|
Location: ............... |
|
Date: .......... |
| |
|
Humidity: |
crop 1: high/medium/low |
Wind speed: |
crop 1: high/medium/low crop | |
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|
crop 2: high/medium/low |
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2: high/medium/low |
DATA SHEET 5
Determination of crop water needs
(see also Data Sheet 4)
Location:...............
Date: ...............
Crop: ...............
Planting date: ...............
|
Months |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
|
ETo (mm/day) |
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Growth stages | ||||||||||||
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Kc per gr. St. | ||||||||||||
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Kc per month |
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ET crop (mm/d) |
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ET crop (mm/m) |
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Crop: ...............
Planting date: ...............
|
Months |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
|
ETo (mm/day) |
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Growth stages | ||||||||||||
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Kc per gr. St | ||||||||||||
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Kc per month |
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ET crop (mm/d) |
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ET crop (mm/m) |
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Note:
ET crop (mm/day) = Kc (per month) × ETo (mm/day)
ET crop (mm/month) = 30 × ET crop (mm/day)
DATA SHEET 6
Determination of Irrigation water needs
(see also Data sheet 5)
Location: ............
Date: .........
Crop:..................
Planting date:................
|
Months |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
|
ETo (mm/day) |
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Growth stages | ||||||||||||
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Kc per gr. St. | ||||||||||||
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Kc per month |
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ET crop (mm/d) |
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ET crop (mm/m) |
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P (mm/m) |
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Pe (mm/m) |
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IN (mm/m) |
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IN (mm/day) |
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Crop: ..................
Planting date: .....................
|
Months |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
|
ETo (mm/day) |
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Growth stages | ||||||||||||
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Kc per gr. St. | ||||||||||||
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Kc per month |
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ET crop (mm/d) |
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ET crop (mm/m) |
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P (mm/m) |
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Pe (mm/m) |
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IN (mm/m) |
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IN (mm/day) |
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Note:
ET crop (mm/day) = Kc (per month) × ETo (mm/day)ET crop (mm/month) = 30 × ET crop (mm/day)
Pe = 0.6 P - 10 if P < 75 mm/month
Pe = 0.8 P - 25 if P > 75 mm/month
IN (mm/month) = ET crop (mm/month) - Pe (mm/month)
DATA SHEET 7
Determination of Irrigation water need of paddy rice
Location: .............
Date: ...................
|
Humidity: |
crop 1: |
high/medium/low |
|
|
crop 2 |
high/medium/low |
|
Wind speed: |
crop 1: |
high/medium/low |
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|
crop 2 |
high/medium/low |
No. of crops per year: ........................
|
Planting date: |
crop 1: |
.................. |
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|
crop 2: |
.................. |
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Rice crop 1: |
Duration total growing period from sowing or transplant: |
.......days |
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Duration mid season stage* |
............days |
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Rice crop 2: |
Duration total growing period from sowing or transplant: |
.......days |
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|
Duration mid season stage* |
............days |
*Duration mid season stage = Duration total growing period - 90 days
|
Crop factors (Table 11) |
Crop: |
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|
|
1 |
2 |
|
day: 0-60 |
............ |
............ |
|
mid season |
............ |
............ |
|
last 30 days |
............ |
............ |
|
Saturation requirement: |
200 mm |
crop 1: |
Month: ................ |
|
|
|
crop 2: |
Month: .......... |
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Percolation and seepage: |
............. mm/day = ................ mm/month |
|
Establishment water layer: |
100 mm |
crop 1: |
Month: ....... |
|
|
|
crop 2: |
Month: ......... |
Crop: ........................
Planting date: ...................
|
Months |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
|
ETo (mm/day) |
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Growth stages |
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Kc per gr. St. |
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Kc per month |
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ET crop (mm/d) |
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ET crop (mm/m) |
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SAT (mm) |
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PERC (mm/mo) |
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WL (mm) |
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P (mm/mo) |
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Pe (mm/mo) |
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IN (mm/mo) |
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IN (mm/day) |
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Crop: ...................
Planting date: ..............
|
Months |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
|
ETo (mm/day) |
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Growth stages | ||||||||||||
|
Kc per gr. St. | ||||||||||||
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Kc per month |
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ET crop (mm/d) |
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ET crop (mm/m) |
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SAT (mm) |
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PERC (mm/mo) |
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WL (mm) |
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P (mm/mo) |
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Pe (mm/mo) |
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IN (mm/mo) |
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IN (mm/day) |
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Note:
For ET crop and Pe, see Data Sheet 6IN (mm/mo) = ET crop (mm/mo) + SAT (mm) + PERC (mm/mo) + WL (mm) - Pe (mm/mo)
Tipo-lito SAGRAF - Napoli
