Ojo Olayinka Oluyemi PhD | Ladoke Akintola Univeristy of Technology, Ogbomoso (original) (raw)
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Papers by Ojo Olayinka Oluyemi PhD
Journal of Organic Agriculture and Environment , Dec 2013
Marigold (Tagetes spp.) is one of the commercially exploited ornamental crops in the family Aster... more Marigold (Tagetes spp.) is one of the commercially exploited ornamental crops in the family Asteraceae used as cut flowers, bedding plant and biocides. A field experiment was conducted between June and November, 2012 at the Organic Agriculture Skills
Demonstration Plot, Federal University of Agriculture, Abeokuta, Nigeria (3 0 25’E and 7 0 25’) to investigate the growth and flowering response of two varieties (‘Petit’ and ‘Glowing ember’) of French marigold (Tagetes patula L.) to three (0, 10 and 20 t/ha) poultry manure (PM) rates. The experiment was a split-plot arrangement fitted into a Randomized Complete Block Design in four replications. PM and variety were on main plot and subplot, respectively. ‘Glowing ember’ was significantly (P≤0.05) taller in plant height, broader in flower surface area and higher in total flower weight than ‘petit’. Application of 10 and 20 t/ha PM significantly (P≤0.05) increased growth (plant height, number of leaves and dry matter production) and flowering (number of flowers, flower surface area and fresh flower yield) parameters. The variety x PM significant (P≤0.05) interactions were observed in ‘Glowing ember x 20 t/ha PM for total flower yield and ‘Petit x 10 t/ha PM for leaf dry weight and total dry matter accumulation. This study has shown that variety and poultry manure had significant influence on the growth and flowering of French marigold.
Keywords: Poultry manure and Tagetes patula
Nigerian Journal of Horticultural Science, 2023
Lettuce (Lactuca sativa L.) is an exotic vegetable to Africa which is valued for its nutritional ... more Lettuce (Lactuca sativa L.) is an exotic vegetable to Africa which is valued for its nutritional and medicinal properties. A pot experiment was conducted at the Teaching and Research farm, Ladoke Akintola University of Technology, Ogbomoso, Nigeria (Latitude 8°10 1 N; Longitude 4°16 1 E) to determine growth and yield response of lettuce (Lactuca sativa) to compost applied at the rate of 0, 5 and 10 t/ha. The experiment was laid out in a completely randomized design with ten replications. The experiment was laid out in a completely randomized design with ten replications. Data were collected on number of leaves, canopy diameter, leaf area, fresh shoot and root weight, dried shoot and root weight, leaf area index, yield, correlation of growth and yield parameters were determined. Data collected were subjected to analysis of variance (ANOVA) and correlation using GENSTAT 12 th edition (commercial version) while significant mean separation was done by the use of Least Significance Difference (LSD) at 5% level of probability (Wahua, 1999). Results showed that application of compost supported growth and yield of lettuce. Lettuce applied with compost at the rate of 5 and 10 t/ha produced more leaves, bigger leaves, higher shoot and root weight (fresh and dry), higher percentage of leaf area index and higher yield when compared with untreated lettuce. However, there was no significant difference between lettuce applied with 5 and 10 t/ha compost in all parameters. All growth parameters had significant and positive correlation with yield of lettuce. The study concluded that application of 5 t/ha compost was optimum for the growth and yield of lettuce.
A field experiment was conducted at the Federal University of Agriculture, Abeokuta, Nigeria in t... more A field experiment was conducted at the Federal University of Agriculture, Abeokuta, Nigeria in the dry season of 2011 and wet season of 2012 to assess the effects of spacing on the growth performance of four different lawn grass species. The experiment was a split plot arrangement fitted into a Randomised Complete Block Design (RCBD) replicated four times. Main plot was lawn grass species (Bahama grass - Cynodon dactylon, Carpet grass - Axonopus compressus, Kikuyu grass -Zoysia tenuifolia and Port Harcourt grass - Crysopogon spp.). Sub plot were spacing (25 cm x 10cm, 25cm x 25cm and 25cm x 50cm). Data were collected on primary tiller length, number of leaves and tillers, weed infestation and total dry matter accumulation. Bahama grass produced significantly (p ≤ 0.05) longer primary tillers, higher numbers of leaves and tillers than other grass species during both seasons. Bahama grass significantly (p ≤ 0.05) suppressed weed better during the dry season while Port Harcourt grass significantly (p ≤ 0.05) suppressed weed than other grass species during wet season. 25cm x 10cm spacing significantly (p ≤ 0.05) increased primary tiller length while 25cm x 50cm spacing significantly (p ≤ 0.05) increased numbers of leaves and tillers and higher total dry matter accumulation compared with 25cm x 25cm and 25cm x 10cm spacing in both seasons. Spacing of 25cm x 10cm produced significantly (p ≤ 0.05) least weed biomass during dry season while 25cm x 25cm spacing produced significantly (p ≤ 0.05) least weed biomass during the wet season. ‘Bahama’ x 25cm x 50cm produced higher number of leaves and tillers, ‘Bahama’ x 25cm x 10cm significantly (p ≤ 0.05) produced longer primary tiller length than other grass species during both seasons. ‘Port Harcourt grass’ x 25cm x 50cm significantly (p ≤ 0.05) produced higher total dry matter accumulation during both seasons. However, number of leaves and tillers were not significantly influenced during both seasons. Port Harcourt grass was the more vigorous grass specie which can therefore be recommended for lawn establishment during both seasons. 25cm x 25cm spacing is recommended for lawn establishment in both seasons.
Keywords: Lawn grass species, spacing, Nigeria
Rose periwinkle (Catharanthus roseus L.) is an ornamental herb valued as bedding or potted plant ... more Rose periwinkle (Catharanthus roseus L.) is an ornamental herb valued as bedding or potted plant as well as for its pharmaceutical properties. The response of Rose periwinkle to poultry manure application was investigated at the Organic Agriculture Skills and Demonstration Plot of the Federal University of Agriculture, Abeokuta, Nigeria between October 2012 and January 2013. The aim of the study was to determine the growth and flowering of Rose Periwinkle in response to poultry manure applied at the rate of 10, 20, and 40t/ha compared with non-application (control). The poultry manure was applied three weeks before transplanting following a Randomised Complete Block Design with four replications. Application of poultry manure significantly (p ≤ 0.05) enhanced number of branches, leaf area, number of flowers, total flower surface area and flower retention per plant. Manure application at 10, 20 and 40t /ha elicited similar effects. Consequently, 10t/ha of poultry manure applied three weeks before transplanting is recommended for Rose Periwinkle grown for its ornamental value.
Key Words: Rose periwinkle (Catharanthus roseus), Poultry manure, Growth, Flowering.
Journal of Organic Agriculture and Environment , Dec 2013
Marigold (Tagetes spp.) is one of the commercially exploited ornamental crops in the family Aster... more Marigold (Tagetes spp.) is one of the commercially exploited ornamental crops in the family Asteraceae used as cut flowers, bedding plant and biocides. A field experiment was conducted between June and November, 2012 at the Organic Agriculture Skills
Demonstration Plot, Federal University of Agriculture, Abeokuta, Nigeria (3 0 25’E and 7 0 25’) to investigate the growth and flowering response of two varieties (‘Petit’ and ‘Glowing ember’) of French marigold (Tagetes patula L.) to three (0, 10 and 20 t/ha) poultry manure (PM) rates. The experiment was a split-plot arrangement fitted into a Randomized Complete Block Design in four replications. PM and variety were on main plot and subplot, respectively. ‘Glowing ember’ was significantly (P≤0.05) taller in plant height, broader in flower surface area and higher in total flower weight than ‘petit’. Application of 10 and 20 t/ha PM significantly (P≤0.05) increased growth (plant height, number of leaves and dry matter production) and flowering (number of flowers, flower surface area and fresh flower yield) parameters. The variety x PM significant (P≤0.05) interactions were observed in ‘Glowing ember x 20 t/ha PM for total flower yield and ‘Petit x 10 t/ha PM for leaf dry weight and total dry matter accumulation. This study has shown that variety and poultry manure had significant influence on the growth and flowering of French marigold.
Keywords: Poultry manure and Tagetes patula
Nigerian Journal of Horticultural Science, 2023
Lettuce (Lactuca sativa L.) is an exotic vegetable to Africa which is valued for its nutritional ... more Lettuce (Lactuca sativa L.) is an exotic vegetable to Africa which is valued for its nutritional and medicinal properties. A pot experiment was conducted at the Teaching and Research farm, Ladoke Akintola University of Technology, Ogbomoso, Nigeria (Latitude 8°10 1 N; Longitude 4°16 1 E) to determine growth and yield response of lettuce (Lactuca sativa) to compost applied at the rate of 0, 5 and 10 t/ha. The experiment was laid out in a completely randomized design with ten replications. The experiment was laid out in a completely randomized design with ten replications. Data were collected on number of leaves, canopy diameter, leaf area, fresh shoot and root weight, dried shoot and root weight, leaf area index, yield, correlation of growth and yield parameters were determined. Data collected were subjected to analysis of variance (ANOVA) and correlation using GENSTAT 12 th edition (commercial version) while significant mean separation was done by the use of Least Significance Difference (LSD) at 5% level of probability (Wahua, 1999). Results showed that application of compost supported growth and yield of lettuce. Lettuce applied with compost at the rate of 5 and 10 t/ha produced more leaves, bigger leaves, higher shoot and root weight (fresh and dry), higher percentage of leaf area index and higher yield when compared with untreated lettuce. However, there was no significant difference between lettuce applied with 5 and 10 t/ha compost in all parameters. All growth parameters had significant and positive correlation with yield of lettuce. The study concluded that application of 5 t/ha compost was optimum for the growth and yield of lettuce.
A field experiment was conducted at the Federal University of Agriculture, Abeokuta, Nigeria in t... more A field experiment was conducted at the Federal University of Agriculture, Abeokuta, Nigeria in the dry season of 2011 and wet season of 2012 to assess the effects of spacing on the growth performance of four different lawn grass species. The experiment was a split plot arrangement fitted into a Randomised Complete Block Design (RCBD) replicated four times. Main plot was lawn grass species (Bahama grass - Cynodon dactylon, Carpet grass - Axonopus compressus, Kikuyu grass -Zoysia tenuifolia and Port Harcourt grass - Crysopogon spp.). Sub plot were spacing (25 cm x 10cm, 25cm x 25cm and 25cm x 50cm). Data were collected on primary tiller length, number of leaves and tillers, weed infestation and total dry matter accumulation. Bahama grass produced significantly (p ≤ 0.05) longer primary tillers, higher numbers of leaves and tillers than other grass species during both seasons. Bahama grass significantly (p ≤ 0.05) suppressed weed better during the dry season while Port Harcourt grass significantly (p ≤ 0.05) suppressed weed than other grass species during wet season. 25cm x 10cm spacing significantly (p ≤ 0.05) increased primary tiller length while 25cm x 50cm spacing significantly (p ≤ 0.05) increased numbers of leaves and tillers and higher total dry matter accumulation compared with 25cm x 25cm and 25cm x 10cm spacing in both seasons. Spacing of 25cm x 10cm produced significantly (p ≤ 0.05) least weed biomass during dry season while 25cm x 25cm spacing produced significantly (p ≤ 0.05) least weed biomass during the wet season. ‘Bahama’ x 25cm x 50cm produced higher number of leaves and tillers, ‘Bahama’ x 25cm x 10cm significantly (p ≤ 0.05) produced longer primary tiller length than other grass species during both seasons. ‘Port Harcourt grass’ x 25cm x 50cm significantly (p ≤ 0.05) produced higher total dry matter accumulation during both seasons. However, number of leaves and tillers were not significantly influenced during both seasons. Port Harcourt grass was the more vigorous grass specie which can therefore be recommended for lawn establishment during both seasons. 25cm x 25cm spacing is recommended for lawn establishment in both seasons.
Keywords: Lawn grass species, spacing, Nigeria
Rose periwinkle (Catharanthus roseus L.) is an ornamental herb valued as bedding or potted plant ... more Rose periwinkle (Catharanthus roseus L.) is an ornamental herb valued as bedding or potted plant as well as for its pharmaceutical properties. The response of Rose periwinkle to poultry manure application was investigated at the Organic Agriculture Skills and Demonstration Plot of the Federal University of Agriculture, Abeokuta, Nigeria between October 2012 and January 2013. The aim of the study was to determine the growth and flowering of Rose Periwinkle in response to poultry manure applied at the rate of 10, 20, and 40t/ha compared with non-application (control). The poultry manure was applied three weeks before transplanting following a Randomised Complete Block Design with four replications. Application of poultry manure significantly (p ≤ 0.05) enhanced number of branches, leaf area, number of flowers, total flower surface area and flower retention per plant. Manure application at 10, 20 and 40t /ha elicited similar effects. Consequently, 10t/ha of poultry manure applied three weeks before transplanting is recommended for Rose Periwinkle grown for its ornamental value.
Key Words: Rose periwinkle (Catharanthus roseus), Poultry manure, Growth, Flowering.