Table 2 Effects of leaf removal on N accumulation (g plant−1) and distribution (%) in remaining tissues at physiological maturity (R6) in 2012 and 2013 growing seasons. S0 refers to control (no leaf removal); S2, S4 and S6 refer to the removal of two, four or six leaves from top of a plant at three days after silking, respectively.

From: Optimum Leaf Removal Increases Nitrogen Accumulation in Kernels of Maize Grown at High Density

Years

Treatment

N accumulation in different plant organs at R6 (g plant−1)

N distribution in different plant organs at R6 (%)

Ear leaf

Stem

Other leaves

Cob

Bract

Grain

Total

Ear leaf

Stem

Other leaves

Cob

Bract

Grain

2012

S0

0.07

0.56

0.75

0.11

0.14

1.56

3.07

2.21

17.66

23.66

3.15

4.10

49.21

S2

0.10

0.51

0.84

0.12

0.15

1.80

3.52

2.84

14.49

23.86

3.41

4.26

51.14

S4

0.06

0.68

0.52

0.08

0.09

0.98

2.42

3.18

28.08

21.38

3.10

3.74

40.52

S6

0.07

0.76

0.40

0.05

0.06

0.83

2.18

3.21

34.86

18.35

2.29

3.21

38.07

LSD 0.05

0.02

0.04

0.07

0.02

0.02

0.09

0.14

0.25

0.66

0.78

0.15

0.25

2.08

2013

S0

0.07

0.56

0.73

0.10

0.13

1.51

3.10

2.39

18.05

23.44

3.16

4.13

48.74

S2

0.10

0.50

0.79

0.11

0.13

1.87

3.49

2.54

14.92

22.17

3.12

3.76

53.49

S4

0.08

0.65

0.55

0.08

0.10

0.94

2.40

3.33

25.08

22.92

3.33

4.17

39.17

S6

0.09

0.81

0.44

0.05

0.07

0.70

2.16

4.17

37.50

20.37

2.31

3.24

32.41

LSD 0.05

0.03

0.05

0.04

0.02

0.01

0.11

0.19

0.11

0.56

0.31

0.13

0.17

2.69

ANOVA Year (Y) Leaf removal(L) Y × L

 

ns ns ns

ns *** ns

ns *** *

ns ** ns

ns ** *

ns *** **

* *** ns

* *** **

** *** **

ns *** *

ns * ns

*** ns

ns *** **

Blocks

 

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

 
  1. Note: R6 means physiological maturity. Data represents means ± SE (n = 3). LSD 0.05, least significant difference at 0.05. ns, Not significance; *Significant at the 0.05 probability level; **Significant at the 0.01 probability level; ***Significant at the 0.001 probability level.