| dc.description.abstract | An experiment was conducted at the research field of Agroforestry and Environment
Department, Hajee Mohammad Danesh Science and Technology University, Bangladesh
during the period of November 2016 to March 2017 to find out the allelopathic effect of
four tree species on the germination, root architecture, shoot growth and yield of two
wheat varieties (BARI Gom-27 and BARI Gom-28). There were five treatments
including control viz. T1 (Ghora neem tree leaf), T2 (Ipil- ipil tree leaf), T3 (Mango tree
leaf), T4 (Sada koroi tree leaf) and T5 (only water; Control). There were two
experiments; Experiment-1 was done in laboratory condition to test the allelopathic
effect of four tree species on the germination of tested wheat varieties in Petridis and
Experiment-2 was done in field condition to find out the allelopathic effect of trees on
the germination, growth root architecture and yield. The concentration used in the
laboratory experiment for each dry leaf powder was 5%. In case of field experiment 20g
dry leaf powder were mixed in each experimental plot of size 1.5ft × 1.5ft. In case of
laboratory experiment, germination percentage of BARI Gom-27 was highest (95%) in
Control condition followed by Sada koroi leaf extract (60%), Mango leaf extract (40%),
Ipil-ipil leaf extract (45%) and lowest percentage (20%) was found in Ghora neem leaf
extract. In the same way, in case of BARI Gom- 28, the highest germination percentage
(90%) was recorded in Control treatment, followed by Sada koroi leaf extract (39%), Ipil
ipil leaf extract (33%), Mango leaf extract (30%) and lowest (21%) was recorded in
Ghora neem leaf extract. Again in field experiment, BARI Gom-27 gave the highest
(88.16%) germination in Control treatment followed by Ipil-ipil tree leaf extract (84.1%),
Mango tree leaf extract (82.36%), Sada koroi leaf extract (78.88%) and lowest
germination percentage (77%) was found in Ghora neem leaf extract. Likewise,
germination percentage of BARI Ghom-28 was found highest (85.26%) in Control and
lowest (73.66%) was found in Sada koroi leaf extract. In BARI Gom-27, the highest
yield (2047.61kg/ha) was observed in Control followed by Sada koroi leaf extract
(1666.67 kg/ha), Ipil-ipil leaf extract (1380.09 kg/ha), Mango leaf extract (1238.09
kg/ha) and lowest (1000 kg/ha) was in Ghora neem leaf extract. In the same way in case
of BARI Gom-28 the highest (1857.14 kg/ha) yield was recorded in Control followed by
Sada koroi leaf extract (1523.81 kg/ha), Ipil-ipil leaf extract (1285.71kg/ha), Mango leaf
extract (1190.47 kg/ha) and lowest (1095.23 kg/ha) was in Ghora neem leaf extract.
Finally it can be concluded that among the two wheat varieties, BARI Gom-27 gave
good result in respect to the allelopathic of the tested four tree species. Among the four
tested tree species, Sada koroi leaf extract was less allelopathic effect on wheat. So,
BARI Gom-27 can be cultivated in association with Sada koroi tree. I think both BARI
Gom-27 and 28 can be growth under sada koroi because 1.6 t/ha in 27 1.5 t/ha in
statistically no difference. | en_US |
