Table 2 Means for seasonal drainage water, gross irrigation, rainfall and actual evapotranspiration, ETa, depths.

Irrigation regime

 40% ET_c

254.9^d*

2.18^d

0.87^d

290

558

 60% ET_c

382.5^c

57.19^c

15.21^c

290

613

 80% ET_c

510.1^b

216.34^b

42.69^b

290

578

 100% ET_c

637.4^a

345.16^a

54.26^a

290

572

Source of nitrogen

 Manure

446.2^a

146.80^b

26.49^b

290

590

 Urea

446.2^a

163.64^a

30.02^a

290

570

Cropping system

 Mono-cropping

446.2^a

162.92^a

29.89^a

290

575

 Intercropping

446.2^a

147.52^b

26.62^b

290

586

Growing season

 1st

420^c

145.86^b

28.17^b

280

559

 2nd

478.3^a

145.89^b

24.04^c

232

566

 3rd

472.5^b

163.21^a

27.87^b

281

594

 4th

414.2^d

165.91^a

32.94^a

368

601