2 research outputs found
Effect of Arbuscularmycorrhizal Fungi and Poultry Manure on Growth and Nutrients Uptake by Maize under Field Condition
Field experiment was conducted to study the
effect of arbuscularmycorrhizal fungi (AMF) and poultry
manure (PM) on the growth and nutrients uptake by maize.
The experiment was laid out in a randomized complete block
design with 6 levels of PM in tones ha-1 (0, 4, 6, 8, 10, & 12) and 2 levels of AMF; (inoculated , +AMF and un-inoculated, -AMF) + recommended dose of NPK (RD NPK) chemical fertilizer; making 13 treatment combinations replicated 3 times. Plant growth (height, leaf area, root volume, shoot, and root dry weight biomass), root colonization (RC %) and uptakes of N, P, & K were assessed after six weeks growing period of maize. Inoculated plants and RD NPK recorded higher values for plant growth biometrics and nutrients uptake compared to un-inoculated plants.Poultry manure application enhanced RC % and AMF spore density with maximum value (43.00±38.70 %, 17.33±1.202 g-1 soil) at 12 t PM ha-1. Applying 12 t PM+AMF produced plants with the highest shoot and root biomass weights (199.00±3.055, 9.57±0.713 g) that were comparable to RD NPK
(194.33±2.404, 9.27±0.376 g). Increase in shoot dry biomass
due to AMF revealed, 19.3%, 20%, 12.2%, 7.2%, 7.9%, and
15.2% over 0, 4, 6, 8, 10 & 12 t PM ha-1 of un-inoculated
plants. Applying 12 t PM+AMF recorded higher shoot dry
biomass by 2.3% over RD NPK. RC % correlated positively
with shoot biomass (R2= 0.753). Maximum N, P, & K uptake
were recorded at 12 t PM+AMF compared to all the
treatments. It could be concluded that PM have potentially
stimulated AMF symbiosis, enhanced maize growth and
nutrients uptake under normal field condition compared to
chemical fertilizer, thus could be considered for maize
production
A Preliminary Study on the Induction of Somatic Embryogenesis of Eusideroxylonzwageri Tesym and Binned (Borneo Ironwood) from Leaf Explant
Eusideroxylon zwageri is a tree of tropical
rainforest zone and belongs to a Lauraceae family. It is one
of the hardest timber species in Southeast Asia. The objective
of this study was to determine the optimal culture medium
for the induction of somatic embryogenesis f
explants of E. zwageri. It was found that the globular somatic
embryos were induced in half strength of MS medium with
1.0, 1.5, 2.0 mg/L of BAP in combination with either 0.5 mg/L
of 2,4-D or NAA. The maturation of somatic embryos
obtained in half strength of MS medium with BAP, NAA and
GA3. The highest mean number of the induction of somatic
embryos up to the cotyledonary phase was observed in
culture medium containing 1.0 mg/L of BAP, 0.5 mg/L of
NAA in combination with 1.0 mg/L of GA
reported preliminary study was useful for further plantlet
regeneration of this species through induction of somatic
embryogenesis