| Lettuce
|
Units
|
Average
|
Range
|
Valuation
|
| CLIMATE
|
_____
|
_____
|
_____
|
_____
|
| TEMPERATURE
|
_____
|
_____
|
_____
|
_____
|
| FROST plant
|
Cº
|
_____
|
_____
|
SENSITIVE
|
| AIR TEMPERATURE - Zero vegetation
|
Cº
|
_____
|
4-5
|
_____
|
| GERMINATION-SEEDLINGS
|
Cº
|
_____
|
15-20
|
_____
|
| TEMPERATURE - optimize GERMINATION
|
Cº
|
30,0
|
_____
|
_____
|
| VEGETATIVE DEVELOPMENT
|
Cº
|
_____
|
15-20
|
_____
|
| VEGETATIVE development-night
|
Cº
|
20,0
|
minima
|
_____
|
| HEIGHT M. (COOL IN THE TROPICS) optimize
|
m
|
_____
|
500-800
|
_____
|
| WATER
|
_____
|
_____
|
_____
|
_____
|
| RESISTANCE TO THE DROUGHT
|
_____
|
_____
|
_____
|
NOT TOLERATED
|
| BORON-WATER IRRIGATION
|
mg/lt
|
_____
|
3,75-2,5
|
TOLERANT
|
| SOIL
|
_____
|
_____
|
_____
|
_____
|
| PHYSICAL PROPERTIES SOIL
|
_____
|
_____
|
_____
|
_____
|
| FRANCS - light
|
_____
|
_____
|
_____
|
PREFER
|
| SOIL WATER
|
_____
|
_____
|
_____
|
_____
|
| DRAINED
|
_____
|
_____
|
_____
|
DEMANDING
|
| PHYSICAL AND CHEMICAL PROPERTIES
|
_____
|
_____
|
_____
|
_____
|
| PLANT tolerance to pH acid
|
pH
|
_____
|
6-6,8
|
SENSITIVE
|
| dS/m affects crop
|
dS/m
|
1,3
|
_____
|
_____
|
| SALINITY IN THE SOIL-TOLERANCE TO PLANT
|
_____
|
_____
|
_____
|
MODERATELY
|
| MATTER ORGANIC - HUMUS
|
_____
|
_____
|
_____
|
VERY DEMANDING
|
| NUTRITIONAL ELEMENTS
|
_____
|
_____
|
_____
|
_____
|
| NITROGEN-sheet-enough
|
ppm
|
8.000,0
|
_____
|
_____
|
| NITROGEN-sheet-deficient
|
ppm
|
4.000,0
|
_____
|
_____
|
| PHOSPHORUS-sheet-enough
|
ppm
|
3.000,0
|
_____
|
_____
|
| PHOSPHORUS-sheet-deficient
|
ppm
|
2.000,0
|
_____
|
_____
|
| potassium-leaf - enough
|
%
|
3,0
|
_____
|
_____
|
| POTASIO-hoja - deficient
|
%
|
2,0
|
_____
|
_____
|
| manganese-LACKS
|
_____
|
_____
|
_____
|
SENSITIVE
|
| COPPER-LACKS
|
_____
|
_____
|
_____
|
SENSITIVE
|
| molybdenum-LACKS
|
_____
|
_____
|
_____
|
SENSITIVE
|
| BORON-LACKS
|
_____
|
_____
|
_____
|
MODERATELY
|
| FERTILIZATION
|
_____
|
_____
|
_____
|
_____
|
| N-EXTRACTIONS-UF / Ha
|
fu/ha
|
65,0
|
_____
|
_____
|
| P-EXTRACTIONS-UF / Ha
|
fu/ha
|
25,0
|
_____
|
_____
|
| K-EXTRACTIONS-UF / Ha
|
fu/ha
|
120,0
|
_____
|
_____
|
| Ca-EXTRACTIONS-UF / Ha
|
fu/ha
|
40,0
|
_____
|
_____
|
| Mg-EXTRACTIONS-UF / Ha
|
fu/ha
|
12,0
|
_____
|
_____
|
| N-EXTRACTIONS-UF / Tons
|
fu/tm
|
2,6
|
_____
|
_____
|
| P-EXTRACTIONS-UF / Tons
|
fu/tm
|
1,0
|
_____
|
_____
|
| K-EXTRACTIONS-UF / Tons
|
fu/tm
|
4,8
|
_____
|
_____
|
| Ca-EXTRACTIONS-UF / Tons
|
fu/tm
|
1,6
|
_____
|
_____
|
| Mg-EXTRACTIONS-UF / Tons
|
fu/tm
|
0,5
|
_____
|
_____
|
| fertilizer N-high (Kg-UF/Ha)
|
fu/ha
|
100,0
|
_____
|
_____
|
| fertilizer N-medium (Kg-UF/Ha)
|
fu/ha
|
130,0
|
_____
|
_____
|
| fertilizer N-low (Kg-UF/Ha)
|
fu/ha
|
160,0
|
_____
|
_____
|
| fertilizer P-high (Kg-UF/Ha)
|
fu/ha
|
30,0
|
_____
|
_____
|
| fertilizer P-medium (Kg-UF/Ha)
|
fu/ha
|
45,0
|
_____
|
_____
|
| fertilizer P-low (Kg-UF/Ha)
|
fu/ha
|
60,0
|
_____
|
_____
|
| fertilizer K-high (Kg-UF/Ha)
|
fu/ha
|
60,0
|
_____
|
_____
|
| fertilizer K-medium (Kg-UF/Ha)
|
fu/ha
|
90,0
|
_____
|
_____
|
| fertilizer K-low (Kg-UF/Ha)
|
fu/ha
|
120,0
|
_____
|
_____
|
| Manure / has
|
ton/ha
|
22,0
|
20-25
|
_____
|
| fertilizer N-high (Kg-UF/Tons)
|
fu/tm
|
4,0
|
_____
|
_____
|
| fertilizer N-medium (Kg-UF/Tons)
|
fu/tm
|
5,2
|
_____
|
_____
|
| fertilizer N-low (Kg-UF/Tons)
|
fu/tm
|
6,4
|
_____
|
_____
|
| fertilizer P-high (Kg-UF/Tons)
|
fu/tm
|
1,2
|
_____
|
_____
|
| fertilizer P-medium (Kg-UF/Tons)
|
fu/tm
|
1,8
|
_____
|
_____
|
| fertilizer P-low (Kg-UF/Tons)
|
fu/tm
|
2,4
|
_____
|
_____
|
| fertilizer K-high (Kg-UF/Tons)
|
fu/tm
|
2,4
|
_____
|
_____
|
| fertilizer K-medium (Kg-UF/Tons)
|
fu/tm
|
3,6
|
_____
|
_____
|
| fertilizer K-low (Kg-UF/Tons)
|
fu/tm
|
4,8
|
_____
|
_____
|
| NITROGEN-preSOWING
|
%
|
_____
|
1/2
|
_____
|
| NITROGEN-DEVELOPMENT PLANT
|
%
|
_____
|
1/2
|
_____
|
| PHOSPHORUS-preSOWING
|
%
|
100,0
|
_____
|
_____
|
| POTASSIUM-preSOWING
|
%
|
100,0
|
_____
|
_____
|
| TECHNIQUES OF CULTIVATION
|
_____
|
_____
|
_____
|
_____
|
| SEEDING-PLANTING
|
_____
|
_____
|
_____
|
_____
|
| SEEDS-WEIGHT (Gr / 1000 SEEDS)
|
gr
|
0,7
|
_____
|
_____
|
| N °-SEEDS/GR.
|
seeds/gr
|
800,0
|
_____
|
_____
|
| SEED germination capacity years
|
years
|
3,0
|
_____
|
_____
|
| GERMINATION, TEMPERATURE OPTIMA
|
days
|
8,0
|
_____
|
_____
|
| SEED NURSERY, GR / HAS. CULTIVATED
|
gr/ha
|
300,0
|
_____
|
_____
|
| DEPTH, CM.
|
cm
|
0,6
|
_____
|
_____
|
| TRANSPLANTING, plant height cm.
|
cm
|
8,0
|
_____
|
_____
|
| TRANSPLANT, LENGTH NO. LEAVES
|
nº
|
_____
|
5-6
|
_____
|
| TABLE, WIDTH BETWEEN CENTRES
|
m
|
0,9
|
0,8-1,0
|
_____
|
| TABLE, N ° - ROWS
|
nº
|
2,0
|
_____
|
_____
|
| KG. SEED-TUBERS-bulbs/HA.
|
kg/ha
|
2,5
|
2-3
|
_____
|
| N °-PLANTS-TUBERS/HA.
|
plants/ha
|
35.000,0
|
_____
|
_____
|
| TRANSPLANT, DAYS FROM SOWING/PLANTING
|
days
|
_____
|
30-40
|
_____
|
| PLANTING distance lines m.
|
m
|
0,5
|
_____
|
_____
|
| PLANTING distance plants m.
|
m
|
0,3
|
0,25-0,30
|
_____
|
| HARVESTING WORK
|
_____
|
_____
|
_____
|
_____
|
| AVERAGE production tonnes / has.
|
ton/ha
|
25,0
|
_____
|
_____
|
| POSTHARVEST-MARKETING
|
_____
|
_____
|
_____
|
_____
|
| TEMPERATURE OF STORAGE
|
Cº
|
1,0
|
_____
|
_____
|
| STORAGE HUMIDITY %
|
%
|
_____
|
90-95
|
_____
|
| COLD STORAGE TIME
|
weeks
|
3,0
|
2-4
|
_____
|
| COMPOSITION FOOD
|
_____
|
_____
|
_____
|
_____
|
| Water-Fresh product
|
gr
|
96,0
|
_____
|
_____
|
| Dry matter-Fresh produce
|
gr
|
4,0
|
_____
|
_____
|
| ENERGY-Fresh product
|
kcal
|
13,0
|
_____
|
_____
|
| POWER-dry matter
|
kcal
|
325,0
|
_____
|
_____
|
| Carbohydrates-Fresh produce
|
gr
|
2,2
|
_____
|
_____
|
| Carbohydrates-Dry matter
|
%
|
55,8
|
_____
|
_____
|
| SUGAR-Fresh product
|
gr
|
0,9
|
_____
|
_____
|
| SUGAR-Dry matter
|
%
|
23,5
|
_____
|
_____
|
| Dietary fiber-Fresh product
|
gr
|
1,1
|
_____
|
_____
|
| Dietary fiber-Dry matter
|
%
|
27,5
|
_____
|
_____
|
| FATS-Fresh product
|
gr
|
0,2
|
_____
|
_____
|
| FATS-Dry matter
|
%
|
5,5
|
_____
|
_____
|
| PROTEINS-Fresh product
|
gr
|
1,4
|
_____
|
_____
|
| PROTEINS-Dry matter
|
%
|
33,8
|
_____
|
_____
|
