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Main Field :: Nutrient Management :: Cotton

 

Winter Irrigated Cotton and Summer Irrigated cotton

STCR IPNS Recommendations for Cotton

  • Soil test crop response based integrated plant nutrition system (STCR - IPNS) recommendation for prescribing fertilizer doses for specified yield targets [ready reckoners are furnished below]

Mixed black calcareous soil (Perianaickenpalayam series) - Cotton Variety

  • FN = 8.81 T – 0.62 SN

  • FP2O5 = 2.53 T – 1.36 SP

  • FK2O = 4.92 T – 0.25 SK


Initial soil test values        (kg ha-1)
NPK (kg ha-1) + FYM @ 12.5 t ha-1 + Azospirillum @ 2 kg ha-1 + PSB @ 2 kg ha-1
Yield Target - 25 q ha-1
Yield Target -30q ha-1
SN
SP
SK
FN
FP2O5
FK2O
FN
FP2O5
FK2O
180
10
300
54
20*
20*
98
30
33
220
14
380
40*
20*
20*
73
25
20*
260
18
460
40*
20*
20*
48
20*
20*

*Maintenance dose

Note:

  • PSB - Phosphorus Solubilizing Bacteria
  • FN, FP2O5 and K2O  - Fertilizer N, P2O5 and K,2O in kg ha-1, respectively
  • T -Yield target in q ha-1
  • SN, SP and SK - Soil available N, P and K in kg ha-1, respectively
  • ON, OP and OK - Quantities of N, P and K supplied through organic manure in kg ha-1, respectively


Red sandy loam soil - Irugur series - Cotton variety
  • FN = 7.66 T – 0.43 SN – 0.71 ON
  • FP2O5 = 3.22 T – 3.27 SP–0.87 OP
  • FK2O = 5.97 T – 0.50 SK– 0.66 OK


Initial soil test values        (kg ha-1)
NPK (kg ha-1) + FYM @ 12.5 t ha-1 + Azospirillum @ 2 kg ha-1 + PSB @ 2 kg ha-1
Yield Target - 25 q ha-1
Yield Target -30q ha-1

SN

 SP SK FN FP2O5 FK2O FN FP2O5

FK2O

180

 10 200 59 20* 20* 97 32 39

220

 14 240 42 20* 20* 80 20*

20*
260 18 280 40* 20* 20* 63 20*

20*

*Maintenance dose

Mixed black calcareous soil - Perianaickenpalayam series – Cotton under drip fertigation

  • FN = 8.51 T – 0.40 SN – 0.73 ON
  • FP2O5 = 4.41 T – 2.25 SP–0.75 OP
  • FK2O = 6.59 T – 0.18 SK– 0.66 OK

Initial soil test values        (kg ha-1)
NPK (kg ha-1) + FYM @ 12.5 t ha-1 + Azospirillum @ 2 kg ha-1 + PSB @ 2 kg ha-1
Yield Target - 25 q ha-1
Yield Target -30q ha-1

SN

 SP SK FN FP2O5 FK2O FN FP2O5

FK2O

200

 14 400 163 91 124 205 113 157

240

 18 500 147 82 106 189 104

139
280 22 600 131 73 88 173 95

121
  **Maximum dose


 

 

Updated on Jan 2023
 

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