Water solubel fertilizers

1. te
Research Institute,
"New Delhi - 110012

Crop Nutrients requirements

Choice of fertilizers

‘Timing and quantity to apply

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2. Crop nutrients requirement

| Sri

crop
— |vielas

pend ont
Es Method of growing

greenhouse = open field

[variety |

Fertigation

Follar spray _

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3. 12/16/2011

Why? Soluble fertilizers

4. Advantages of Fertigation

Integration of fertilizers with irrigation water.

Uniformity of fertilizer distribution in active root

volume.

Same amount of nutrients for every irigated plant
to adjust concentration and composition of

nutrients inactive root volume according to plant

consumption requirement, respectively to phonological
stages.

Reparttion between Dase dressing su fertigation

Base dressing
(before season)

fertigation
(during season)

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5. Repartiton between base dressing u fertigation

depend on rainfall tevel and the ratio Ir
+ (irrigationárri n+rainfall) auin «wen Irr + Rain

depend on SOil type and nutrient level in soil

analysis Mainly for P, K

depend on method of irrigation and nutrient

me 1 07

fertigation’

Base and top
dressing

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6. |Repartition between base/top dressing am fertigation
depend on soil type and nutrient level in soil analysis
Mainly for P, K

Sandy soi") [mein st Hay Cay a]

0% 20% >40%

Base and top
dressing

Reparttion between Dase/top dressing wa fertigation

depend on method of irrigation and nutrient mobility
Mainly for P, K

[Fine |

Base and top
dressing

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7. Repartition between Dase/top dressing a fertigation

depend on nutrient mobility in soil. Mainty for P, K
Sandy soil 3

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8. Soluble fertilizers

MAP 12-61-0

AS 21%
MKP/ 0-52-34

Nitrie acid
Phosph. acid

KCL 00-60

Soluble fertilizers

Magnesium nitrate

Calcium nitrate se

155-026
Calcium chloride
35%

Magnesium s\ifate
16% Mg

Kiserite 24%

Calcium-
Magnesi

nitrate Epsom salts

Amonium
sulfate 21% N

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9. 12/16/2011

Potassium

Potassium

10. 12/16/2011

Copper sulphate
Iron sulphate

Magnesium sul
‚Ammonium mol
Zinc sulphate

Manganese sulphate =
a

Compatibility chart among different fertilizers

= Te ET es pe

11. Fertigation 2 methods:

[ Quantitative:
os ‘or week oFmonth or growth phase

Proportion

Kg/m* (org) concentration in water

Fertigation Concepts

Quenttate | À Proportional

Fettigation solution
gradient

Abas.” aaaaaae

Fertlizer ls applied In one The fertlizer concentration in

pulse during à part ofthe the irigation water 1 kept

Irrigation time. constant throughout the
irigation time

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12. Fertilizer Tank

90, 120, 160 litres

harvest

Quant. 4

15 kyhalday

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13. 12/16/2011

Proportional method:

mg/l or ppm
gliter
kg/m3

WE.

14. “About 5
liters of
slowly

Solutes dynamics

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15. 12/16/2011

Percentage of N Teached as a Traci

‘mon "ana "rating

Suggestive schedule of fertigation for v

16. «The fertigation
form or avallabl
fertilizer.

«Once the ferti
with Micro iri
The farmers mi
with other chemi

from state governments
giha and K= 80 kg/ha

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17. Conclusions

>The Gove
drip and s

>Presently
farmers. If P equi
of through urea ai
>Efforts should

Ail specially fertl

> Integrated fe
fertilizer and WSF

12/16/2011