An Assement Of Effect Of Ph, Phosphorus And Potassium On Speargrass [Imperata Cylindrica (L.) Raeuschel] Growth And Development In A Tropical Ultisol.
ABSTRACT
A
pot experiment was conducted during 2007 and 2008 cropping seasons at the
Michael Okpara University of Agriculture Umudike' s green house, to assess the
effect of pH (4.58, 5.58, 6.58), phosphorus (0, 30, 60, 90, 120 kg ha') and
potassium (0, 30, 60, 90, 120 kg ha') rates on speargrass growth and
development. The treatments were laid out in a split plot arrangement in a
randomized complete block design with three replications. The pH levels were
assigned to the main plots and the fertilizer rates were in the subplots. The
results obtained showed that increase in single potassium fertilizer (Murate of
Potash) rates above 30 kg ha' significantly decreased speargrass density by 61
- 100% in 2007 and by 90 — 100% in 2008 when compared with the control. Soil pH
did not significantly affect all speargrass traits measured in both years.
Speargrass grew better when phosphorus (Single super phosphate) fertilizer was
applied at the rates of 90 and 120 kg ha' in both years. The interaction
between the fertilizer rates and soil pH were significant in speargrass leaf
area, speargrass number of tillers and speargrass tiller-plant ratio. A
positive correlation was observed between leaf area and all the other measured
traits in both years. In 2007, leaf area significantly correlated positively
with shoot dry matter (r = 0.76, P = 0.05, n = 99), number of tillers (r =
0.70, P = 0.05, n 99) and rhizome dry matter (1= 0.74, P 0.05, n = 99).
Similarly, leaf area strongly correlated positively with shoot dry matter (r =
0.91, P 0.05, n = 99), rhizome dry matter (r = 0.84, P = 0.05, n = 99) and number
of tillers (r = 0.78, P = 0.05, n = 99) in 2008.
0.0
IBEABUCHI, I (2021). An Assement Of Effect Of Ph, Phosphorus And Potassium On Speargrass [Imperata Cylindrica (L.) Raeuschel] Growth And Development In A Tropical Ultisol.. Repository.mouau.edu.ng: Retrieved Nov 23, 2024, from https://repository.mouau.edu.ng/work/view/an-assement-of-effect-of-ph-phosphorus-and-potassium-on-speargrass-%5Bimperata-cylindrica-l-raeuschel%5D-growth-and-development-in-a-tropical-ultisol-7-2
IBEABUCHI, IBEABUCHI. "An Assement Of Effect Of Ph, Phosphorus And Potassium On Speargrass [Imperata Cylindrica (L.) Raeuschel] Growth And Development In A Tropical Ultisol." Repository.mouau.edu.ng. Repository.mouau.edu.ng, 25 Aug. 2021, https://repository.mouau.edu.ng/work/view/an-assement-of-effect-of-ph-phosphorus-and-potassium-on-speargrass-%5Bimperata-cylindrica-l-raeuschel%5D-growth-and-development-in-a-tropical-ultisol-7-2. Accessed 23 Nov. 2024.
IBEABUCHI, IBEABUCHI. "An Assement Of Effect Of Ph, Phosphorus And Potassium On Speargrass [Imperata Cylindrica (L.) Raeuschel] Growth And Development In A Tropical Ultisol.". Repository.mouau.edu.ng, Repository.mouau.edu.ng, 25 Aug. 2021. Web. 23 Nov. 2024. < https://repository.mouau.edu.ng/work/view/an-assement-of-effect-of-ph-phosphorus-and-potassium-on-speargrass-%5Bimperata-cylindrica-l-raeuschel%5D-growth-and-development-in-a-tropical-ultisol-7-2 >.
IBEABUCHI, IBEABUCHI. "An Assement Of Effect Of Ph, Phosphorus And Potassium On Speargrass [Imperata Cylindrica (L.) Raeuschel] Growth And Development In A Tropical Ultisol." Repository.mouau.edu.ng (2021). Accessed 23 Nov. 2024. https://repository.mouau.edu.ng/work/view/an-assement-of-effect-of-ph-phosphorus-and-potassium-on-speargrass-%5Bimperata-cylindrica-l-raeuschel%5D-growth-and-development-in-a-tropical-ultisol-7-2