Prof. Ojeniyi Stephen Olusola

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Research Article Vol. 27, Issue 1

Use of Ash for Soil Fertility Improvement Effect on Cowpea

OJENIYI STEPHEN OLUSOLA^*, Oyatoye A., Abdulraheem M. I.

Different rates of wood ash at 0 to 6t/ha were applied to cowpea crop in an experiment carried out at Akure, Southwest Nigeria to study effects of ash on cowpea performance soil and plant nutrients composition. The experimental soil is slightly acidic, low in available P and exchangeable Ca. Ash increased soil pH which increased with the rate of as...

Apr, 2017 Vol. 27, Issue 1 272 views 480 downloads

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Research Article Vol. 26, Issue 2

The Effects of Different Types of Fertilizers on the Growth and Yield of Sesame (sesamum Indicum L) In Makurdi

OJENIYI STEPHEN OLUSOLA^*, Ibrahim, N. B., Iorlamen, T.

A field experiment was conducted at the Teaching and Research Farm of the University of Agriculture, Makurdi, Benue State, Nigeria during the 2012 cropping season to determine the effects of different fertilizer types on growth and yield of Sesame. The experiment was laid out in a Randomized Complete Block Design and replicated three times. There w...

Aug, 2016 Vol. 26, Issue 2 263 views 503 downloads

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Research Article Vol. 26, Issue 1

Effect of Nitrogen and Micronutrients on Grain Yield of Maize Varieties in the Northern Guinea Savanna Alfisol.

B. T. Olowookere^*, Uyovbisere E, OJENIYI STEPHEN OLUSOLA

Field experiments were conducted in 2008 and 2009 in the Guinea Savanna ecology of Nigeria to investigate the effects of nitrogen fertilizer and micronutrients on the grain yield of two quality maize and two normal maize varieties. The treatments were four rates of inorganic fertilizer N (0, 50, 100, 150 kg Nha-1) and two rates of cocktail micronut...

Apr, 2016 Vol. 26, Issue 1 271 views 474 downloads

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Research Article Vol. 24, Issue 1

Effect of Cropping System on Soil Profile Nutrient Contents

AWANLEMHEN B.E.^*, OJENIYI STEPHEN OLUSOLA

Four soil profile pits were dug under differing cropping systems at Nigerian Institute For Oil Palm Research (NIFOR) experimental plantations in Benin City and chemically analysed. Cropping systems were sole oil palm, oil palm with cassava, oil palm with plantain, and oil palm with coconut. Samples were collected at 0 – 20, 20 – 40, 40 – 60, 60 – 8...

Apr, 2014 Vol. 24, Issue 1 258 views 570 downloads

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Research Article Vol. 23, Issue 2

Cassava Yield as Affected by Sawdust Ash Siam Weed Residue and Npk Fertilizer

Babadele D.O.^*, OJENIYI STEPHEN OLUSOLA

Experiment was conducted at Ayegunle and Oka South-West Nigeria to study effect of combined sawdust ash and siam weed residues and NPK fertilizer (NPKF) on soil nutrients and performance parameters of cassava. Plant parameters determined were number of leaves, plant height, stem girth, leaf area index, root weight, root diameter and root length. Pl...

Aug, 2013 Vol. 23, Issue 2 251 views 497 downloads

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Research Article Vol. 23, Issue 2

Nutrients Concentration and Root Count of Cassava as Influenced by Residue and Npk Fertilizer

Babadele D.O.^*, OJENIYI STEPHEN OLUSOLA

Experiment was conducted at two sites Ayegunle and Oka in South-West Nigeria to study effect of combined plant residues sawdust ash (SDA) and siam weed (Chromolaena odorata) (CR) and NPK (15:15:15) fertilizer on leaf N, P, K, Ca and Mg of Cassava. The parameters were evaluated at 3,6,9 and 12 months after planting (MAP) for nutrient concentrations ...

Aug, 2013 Vol. 23, Issue 2 257 views 506 downloads

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Research Article Vol. 23, Issue 2

Quantitative Analysis of Humic Substances in Soils Treated with Different Organic Manures in Sudano - Sahelian Savanna, Northeast Nigeria

Wapa J. M^*, OJENIYI STEPHEN OLUSOLA, Sandabe M.K

This work was carried out to study the effect of organic manures on different fractions of soil organic matter. Field trials were carried out in 2008 and 2009 cropping seasons at the Teaching and Research Farm of the Department of Soil Science, University of Maiduguri, Maiduguri. The treatments consisted of three types of organic manures (cow dung,...

Aug, 2013 Vol. 23, Issue 2 245 views 537 downloads

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Research Article Vol. 23, Issue 2

Response of Extra - Early Maize Variety (zea Mays ) to Different Organic Manures in the Drier Sub - Region of Northern Nigeria

Wapa J. M^*, OJENIYI STEPHEN OLUSOLA, Samson Joshua Kwari

This work was carried out to study effect of different organic manures on yield of maize in the study area. Field trials were carried out in 2008 and 2009 cropping seasons at the Teaching and Research Farm of the Department of Soil Science, University of Maiduguri, Maiduguri. The treatments consisted of three organic manures (cow dung, city refuse ...

Aug, 2013 Vol. 23, Issue 2 275 views 553 downloads

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Research Article Vol. 23, Issue 2

Combined Effect of Poultry Manure and Npk Fertilizer on Soil Plant Nutrient Composition and Growth of Rubber

Odeyemi R.T.^*, Awodun M.A., OJENIYI STEPHEN OLUSOLA

Because of cost and scarcity associated with the use of chemical fertilizers on rubber and the acidic nature of rubber growing soils in Nigeria, a study was conducted into the effect of poultry manure (PM) and its combination with NPK fertilizer (NPKF) on soil and plant nutrients and growth of rubber seedlings. Six treatments replicated three times...

Aug, 2013 Vol. 23, Issue 2 275 views 507 downloads

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Research Article Vol. 23, Issue 1

Utilization of Ashed Cocoa Pod Husk and Urea Fertilizer on Growth and Dry Matter Yield of Coffee on Alfisol in Ibadan

Akanbi O. S.O.^*, OJENIYI STEPHEN OLUSOLA, Famaye, A. O., Ipinmoroti, R.R.,, Ibiremo, O.S.,

A trial was conducted on sandy clay, slightly acidic, low organic carbon (C) and available phosphorus (P) soil to evaluate the effect of ashed cocoa pod husk (ACPH) and urea fertilizer on the growth and dry matter yield of coffee under greenhouse condition at Cocoa Research Institute of Nigeria (CRIN), Ibadan in 2011. The treatments consist of ACPH...

Apr, 2013 Vol. 23, Issue 1 280 views 564 downloads

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Research Article Vol. 23, Issue 1

Comparative Effect of Variable Rates of Pig and Poultry Manure on the Agronomic Performances of Amaranthus Hybridus in Humid Rainforest South Western Nigeria

Sanni K. O, Adesina J. M.,^*, Ewulo, B. S, OJENIYI STEPHEN OLUSOLA

The health implication of deficiencies of vital nutrients could be supplemented by taking vegetable which are highly nutritious and easily affordable. An experiment was conducted at the Teaching and Research Farm of the Lagos State Polytechnic, Ikorodu, Nigeria, to evaluate the comparative effects of different levels of animal manure on the growth ...

Apr, 2013 Vol. 23, Issue 1 275 views 564 downloads

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Research Article Vol. 23, Issue 1

Combined and Sole Application of Compost and Npk Effect on Okra Yield, Soil and Nutrient Content

Law-ogbomo K.E^*, OJENIYI STEPHEN OLUSOLA

An on-farm experiment was conducted at Uyinmwendin, Edo State, Nigeria in 2009 and 2010 to study immediate and residual effect of compost alone or combined with NPK fertilizer (NPK) on okra (Abelmoschus esculentus) and nutrient availability. Five treatments applied to okra on ultisol of Benin formation were a control, compost (CM) at 20 and 40 t ha...

Apr, 2013 Vol. 23, Issue 1 277 views 574 downloads

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Research Article Vol. 22, Issue 1

Effect of Npk and Poultry Manure on Cowpea and Soil Nutrient Composition

ABEL OLATUNJI ODEYEMI^*, S.A. Ayuba, B.C. Anjembe, OJENIYI STEPHEN OLUSOLA

Field experiment was conducted at University of Agriculture, Makurdi in the Southern Guinea Savanna ecology of Nigeria to test effect of NPK fertilizer and Poultry manure on performance of cowpea and soil nutrient composition. The study conducted in 2008 and 2009 had a control, NPK 20 – 10 – 10 (48 kgha-1) and poultry manure (PM) with or without NP...

Apr, 2012 Vol. 22, Issue 1 280 views 697 downloads

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Research Article Vol. 22, Issue 1

Use of Agricultural Wastes for Improving Soil Crop Nutrients and Growth of Cocoa Seedlings

Akanni D.^*, Odedina S. A, OJENIYI STEPHEN OLUSOLA

The quest for organically-produced cocoa produce in the world market necessitated recent focus on research into the use of agricultural wastes as source of nutrients in cocoa (Theobroma cacao) production. This work carried out at Federal College of Agriculture, Akure is the comparative study of effect of kola testa (KT), cocoa pod ash (CPA), melon ...

Apr, 2012 Vol. 22, Issue 1 301 views 15 downloads

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Research Article Vol. 22, Issue 1

Soil Properties and Response of Yam to Ash Application at Akure, Nigeria

Kayode B. O.^*, OJENIYI STEPHEN OLUSOLA, Odedina S. A

Two experiments were conducted at the Federal College of Agriculture Akure, Southwest Nigeria to test effectiveness of a crop waste wood ash as source of nutrients for plantain (Musa paradisica) and yam (Dioscorea rotundata). Effect of wood ash at 0, 0.4, 0.8 and 1.2 kg/plant was studied as to the effect on soil chemical properties and performance ...

Apr, 2012 Vol. 22, Issue 1 286 views 9 downloads

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Research Article Vol. 21, Issue 2

Effect of Integrated Application of Soil Amendments on Nutrient Uptake and Soil Properties in a Tropical Alfisol

Amusan O. A.^*, OJENIYI STEPHEN OLUSOLA

A field experiment was conducted on a tropical alfisol for two consecutive years to determine the effect of integrated application of nutrient sources on nutrient uptake and soil properties. The treatments consisted of two rates of poultry manure (0 and 5 t ha-1 ), three rates of N fertilizer (0, 50 and 100 kg N ha-1 applied as urea), three rates o...

Aug, 2011 Vol. 21, Issue 2 262 views 539 downloads

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