Table 9 Various crop recommendation using proposed system in various places in Tamil Nadu.

Rice

Clayey soil

N, P,K

100 kg N, 50 kg P₂O₅, 50 kg K₂O

10–15%

Thanjavur, Tiruvarur, Cuddalore

Sugarcane

Loamy soil

N, P,K

120 kg N, 60 kg P₂O₅, 80 kg K₂O

12–18%

Erode, Coimbatore, Tiruchirappalli

Cotton

Sandy loam soil

N, P,K

90 kg N, 40 kg P₂O₅, 60 kg K₂O

8–12%

Dindigul, Madurai, Virudhunagar

Groundnut

Red soil

N, P,K

80 kg N, 30 kg P₂O₅, 50 kg K₂O

7–10%

Pudukkottai, Vellore, Villupuram

Tomato

Loamy soil

N, P,K

120 kg N, 60 kg P₂O₅, 80 kg K₂O

15–20%

Krishnagiri, Tiruvannamalai, Salem

Chili

Sandy soil

N, P,K

100 kg N, 40 kg P₂O₅, 60 kg K₂O

10–15%

Ramanathapuram, Nagapattinam, Karur

Banana

Alluvial soil

N, P,K

150 kg N, 50 kg P₂O₅, 70 kg K₂O

15–20%

Tirunelveli, Tuticorin, Vellore