Production Practices and Quality Assessment of Food Crops. Vol. 1

180 Chris A. Shisanya
Table 7. Effects of rhizobia inoculation on growth and grain yield of TB at final harvest 70 DAE
during the LR season of 1999.
Treatment Pod dry Plant dry 100 seed Seed Grain
weight weight weight weight yield
(g plant –1 ) (g plant –1 ) (g) (g plot –1 ) (kg ha –1 )
TB+N* 2405.3 b 503.3 b 12.6 b 1776.4 b 0935 c
Control 1945.3 b 419.4 b 12.5 b 1446.3 b 0874 c
TB + R3254 3413.3 a 663.7 a 14.5 a 2827.4 a 1409 a
TB + R446 1949.3 b 402.1 b 12.5 b 1447.3 b 0786 c
TB + RTB 1954.4 b 390.9 b 12.3 b 1454.3 b 0824 c
TB + R578 1806.0 b 324.3 b 12.4 b 1333.7 b 0782 c
TB + R579 2271.3 b 464.9 b 12.9 b 1700.3 b 1029 b
Means followed by the same letter down the column are not statistically different (P ≤ 0.05) by Duncan’s
multiple range test.
* Nitrogen (N) fertilizer was top-dressed 10 DAE at the rate of 40 kg ha –1 of CAN (26% N) powder.
Source: After Shisanya, 2002.
Table 8. Effects of rhizobia inoculation on growth and nodulation of TB 21 DAE during the SR
season of 1999/2000.
Treatment Nodule number Nodule dry weight Plant dry weight
(plant –1 ) (mg plant –1 ) (g plant –1 )
TB + N* 12 b 04.9 b 4.3 a
Control 10 b 04.7 b 3.0 a
TB + R3254 30 a 11.2 a 4.0 a
TB + R446 10 b 04.0 b 3.7 a
TB + RTB 14 b 05.1 b 3.5 a
TB + R578 12 b 05.0 b 3.3 a
TB + R579 15 b 05.2 b 3.3 a
Means (n = 28) followed by the same letter down the column are not statistically different (P ≤ 0.05)
by Duncan’s multiple range test.
* Nitrogen (N) fertilizer was top-dressed 10 DAE at the rate of 40 kg ha –1 of CAN (26% N) powder.
Source: After Shisanya, 2002.
(Table 10). A similar trend as above was observed during the LR season (Table
7).
2.9.5. Results of plant tissue N concentration
The data in Table 11 show the N concentration in various plant tissue parts at
final harvest during the LR and SR seasons. Plant tissues of treatment R3254 had
consistently significant higher N concentrations than N and other treatments.
2.10. Discussion
The results obtained from Gram staining and growth of the isolate from TB root
nodules in YEMA conformed to the standard cultural and morphological charac-