Treatments

Number of samples

Cane age (month)

Leaf nitrogen content ( % )

Crop season 2009/2010

Crop season 2009/2010

Continuous injection of the dissolved urea

9

6

2.8

2.7

Injection of the urea during the first half of irrigation time

9

6

2.4

2.4

Injection of the urea during the second half of irrigation time.

9

6

2.2

2.0

Mechanical application of urea

9

6

1.5

1.7

Mean

2.2

2.2

CV %

14

16.7

SE+

0.16

0.15