Influence of Corn (Zea mays L.) Cultivar Development on Grain Nutrient Concentration
Table 2
Grain macronutrient concentration in ten corn cultivars representing five different technological levels in 2006 and 2007, at Rolandia County, Parana State, Brazil.
P
K
Ca
Mg
P
K
Ca
Mg
Treatment
2006
2007
g kg−1
Single
AG9010
3.0a*
3.7a
0.30b
1.37cd
4.1b
7.7b
0.12ab
0.92ab
Hybrids
DKB950
2.9a
4.0a
0.32b
1.32d
5.1a
10.3a
0.13ab
1.12a
Triple
DKB566
2.8a
3.6a
0.31b
1.59abc
3.8b
7.4b
0.10b
0.90ab
Hybrids
AG5020
3.0a
3.4b
0.38b
1.45bcd
3.5b
6.6b
0.15ab
0.94ab
Double
AG2040
3.4a
3.7a
0.49ab
1.71a
4.0b
7.7b
0.14ab
1.00ab
Hybrids
DKB979
2.9a
3.5ab
0.66a
1.39cd
4.1b
7.3b
0.13ab
0.77b
Commercial
BRS4157
3.4a
3.9a
0.46ab
1.64ab
4.0b
7.5b
0.13ab
0.91ab
Varieties
BR106
3.5a
3.9a
0.39b
1.56abcd
4.1b
8.1b
0.18a
1.09ab
Landrace
GI045
3.3a
3.8ab
0.29b
1.55abcd
3.4b
6.8b
0.10b
0.89ab
Cultivars
Palotina
3.1a
3.9ab
0.36b
1.32d
3.8b
7.7b
0.13ab
0.84ab
Coefficient of variation
14
11
46
11
18
18
33
24
*
Averages followed by the same letter in a column did not differ according to Duncan’s multiple range test ().