Efficacy of Selected Agroindustrial Wastes in Managing Root-Knot Nematodes on Black Nightshade in Kenya
Table 5
Effect of soil amendment with CM, TD, and agro-industrial wastes of tea and pyrethrum on the growth of black nightshade and RKN disease in greenhouse test 2.
OAs
Rate g/kg soil
SH (cm)
FSW (gm)
FRW (gm)
J2/200 cc soil
GI*
Rf
+ N
−N
+N
−N
+ N
−N
+N
+N
+N
TD
2.5
14.0d
28.6ab
2.2cd
2.4cd
0.15cd
0.64bc
22.5a
3.3b
3.6bc
5
23.1b
30.8a
2.5cd
3.5c
0.28c
1.28ab
14.0ab
3.0b
2.9bc
8
24.8bc
32.4a
2.8cd
3.8c
0.33c
1.79ab
11.3ab
1.0cd
0.7c
PM
3
14.9cd
28.3ab
2.1cd
3.7c
0.56bc
1.09b
4.3b
3.3b
4.7b
6
24.7b
30.83a
4.0c
3.9c
0.57bc
1.84b
2.5c
3.3b
3.7bc
9
20.8c
31.2a
3.8c
5.0bc
0.59bc
2.61a
1.8cd
1.5c
0.98c
Tres
14
28.3ab
26.0ab
6.4b
7.9ab
0.6bc
1.1b
2.5c
3.3b
3.0bc
28
29.9ab
27.7ab
8.5a
7.88ab
0.57bc
2.6a
3.0c
1.5c
0.7c
32
23.1b
23.7b
6.7ab
6.9ab
0.3cd
1.8ab
1.0cd
1.0cd
0.3c
CM
3
17.5cd
24.3b
0.2de
0.9d
0.26c
0.7bc
20.8a
3.0b
3.7bc
6
22.3bc
26.1ab
0.3de
1.1d
0.25c
0.44cd
9.3b
1.8c
1.3c
9
25.9b
28.3ab
0.6de
3.7c
0.32c
0.55bc
4.3bc
1.5c
0.9c
VWR (%)
20
12.7d
16.8cd
1.5d
2.5cd
1.0b
1.86ab
8.0ab
3.0b
2.2bc
60
12.2d
12.4d
1.9cd
1.1d
0.78c
0.7c
4.0bc
2.5bc
2.6bc
100
9.4de
10.8d
1.5d
0.6de
0.71c
0.9c
2.3c
1.5c
1.2c
Unamended control
—
10.5d
15.9cd
2.4cd
3.3c
0.29c
0.87c
24.8a
4.8a
14.7a
P value
—
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
Means followed by the same letter within each column are not significantly different () as indicated by Fisher’s LSD test. Gall index on a 0–5 gall rating scale according to Quesenberry et al. [17] where 0 = no galls, 1 = 1-2, 2 = 3–10, 3 = 11–30, 4 = 31–100, and 5 ≥ 100 galls per root system.
