Intercropping and Nitrogen Fertilization Altered the Patterns of Leaf Senescence in Sorghum
Table 2
Sorghum grain yield, panicle weight, 1000-seed weight, panicle width, and length of two sorghum varieties (Gadam and Serena) grown in sole and intercrop system with two varieties of cowpea (K80 and M66) and at three N rates at the KALRO research stations in Igoji and Katumani during 2018/2019 short rains season.
Treatments
Igoji
Katumani
Grain yield (t·ha−1)
Panicle weight (g)
1000-seed weight (g)
Panicle width (cm)
Panicle length (cm)
Grain yield (t ha−1)
Panicle weight (g)
1000-seed weight (g)
Panicle width (cm)
Panicle length (cm)
Cropping system (CS)
Sole Gadam
3.15a
35.9a
31.1a
13.6b
19.6ab
3.09a
31.5ab
33.6a
6.3ab
7.9a
Gadam + K80
1.48bc
29.2ab
30.7a
6.8c
17.8ab
0.89c
24.2c
29.1b
6.8a
8.0a
Gadam + M66
1.27bc
27.6b
30.9a
5.1d
15.0b
1.43b
27.6bc
32.9a
5.1b
6.4b
Sole Serena
1.82b
36.1a
27.4b
15.3a
21.3a
2.76a
34.6a
30.1b
6.7a
8.5a
Serena + K80
1.06bc
29.2b
26.1b
5.9cd
7.5c
1.10bc
27.6bc
26.3c
6.5ab
7.5ab
Serena + M66
0.95c
27.6b
31.0a
6.5c
16.8ab
1.27bc
26.1bc
30.7b
5.9ab
8.6a
-value
<0.001
0.039
0.002
<0.001
0.002
<0.001
0.044
<0.001
0.013
0.017
N rate
0 kg·N·ha−1
1.46b
31.4a
30.06a
8.7a
15.4b
1.43b
26.7a
30.33a
6.1a
7.7a
40 kg·N·ha−1
1.57b
31.3a
29.50a
8.7a
16.5ab
1.96a
28.7a
30.72a
6.0a
7.9a
80 kg·N·ha−1
1.84a
30.2a
29.06a
9.3a
17.1a
1.88a
30.5a
30.28a
6.7a
7.9a
-value
0.015
0.352
0.341
0.207
0.076
0.013
0.256
0.803
0.089
0.725
-value CS × N
<.001
0.352
0.236
0.034
0.01
0.031
0.282
0.761
0.66
0.13
The means within a column followed by the same alphabets are statistically similar; CS × N: interaction between cropping system and N rate; ns is not significant.
