Table of Contents

Extension Teaching of Melon Farmers How Improved Farm Practices 

Should be used and Adopted under their Own Individual Farm Location

And Resource Availability in Yakurr Local Government Area of Cross

River State, Nigeria

Adinya I. B. and Mahmood, H. U.                                                                                            1 – 31

Improvement of Clay Soil Characteristic using Rice Husk

Ash and Lime

Salihu Andaa Yunusa, Benjamin Adejoh& Usman Ahmad                                                    32-52

Stabilization of Clay Soil using Calcium Carbide Residue (Case Study of

Angwan Pama Kaduna South Local Government Area of Kaduna State)

Ibrahim Shuaibu, Benjamin Adejoh& Kelani A. Dawood                                                       53-85                                                  

Yield and Crop Water Use of Cowpea under Sprinkler Irrigation System

in Akure, Ondo State Nigeria

Brai M.A.                                                                                                                                  86-93

STABILIZATION OF CLAY SOIL USING CALCIUM CARBIDE RESIDUE (CASE STUDY OF ANGWAN PAMA KADUNA SOUTH LOCAL GOVERNMENT AREA OF KADUNA STATE)

Ibrahim Shuaibu¹, Benjamin Adejoh² & Kelani A. Dawood³

Department of

Email: shuaeboy@yahoo.com

ABSTRACT

This study covers the investigation of the engineering properties of calcium carbide residue stabilized clay soil. It was aimed to determining the suitability of using calcium carbide residue to stabilize a clay soil to ascertain whether it can be economically for use as a construction material for sub base, bases, embankment fills. Samples were collected in angwu- pama Kaduna south local government area and laboratory test were conducted to determine the physical and geological properties of the soil. The strength of the soil had increased considerable by addition of 2%, 4% and 6% of a stabilizer (calcium carbide residue). From the analysis of result obtained in this study, the natural moisture content (NMC) of the soil is very high (i.e 34.27). the consistencies limit and the sieve analysis test result for proper classification of the soil and the effect of calcium carbide residue on the consistency limit parameter, the soil in its natural state has liquid limit of 37.00 and plasticity index of 24.84 and has about 42.9% of its entire material passing through B.S Sieve No. 200s which is accordance with AASHTO soil classification system as an A –6 soil (i.e highly clay soil) which make the soil a poor material for construction. A remarkable value of 2.37 was obtained for it specific gravity value at 0% calcium carbide residue by weight of soil. With the adding 2% – 4% calcium carbide residue, the value was decrease to 2.27 – 2.24 of soil which was the value of one of the most active soil and by adding 6% there was an increase in the value of the soil of specific gravity which was recorded to be 22.8% of clay soil and this confirm with that of lateritic soil described in BS. 1924. The compaction test show that the M.D.D and O.M.C recorded for the control sample was 1.96(g/cm³) and 22.82%. There was a decrease in value recorded with addition of the stabilizer, for consolidation test conducted, there was an increase in cv, mc, and pc value between 2%, 4% calcium carbide residue and was a drop in 6% of calcium carbide residue by rate of soil. It was found that stabilization of clay soil with 2% to 4% calcium carbide residue were the most economical and hence improves the properties of the soil.

Keywords; Soil Stabilization; Calcium Carbide; Construction Material; Soil Classification;

IMPROVEMENT OF CLAY SOIL CHARACTERISTIC USING RICEHUSK ASH AND LIME

Salihu Andaa Yunusa¹, Benjamin Adejoh² & Usman Ahmad³

Department of Civil Engineering,

Kaduna Polytechnic, Nigeria

Email:salihu.andaayunusa@yahoo.com

ABSTRACT

The characteristic of clay soil was improved in this research work. This was done in order to check the issue of strength variation, high plasticity, moisture absorption which affects the performance of clay when used for construction purposes. This research was confine to moisture content, specific gravity, C.B.R, compaction, consistency and compressive strength of clay soil. In this research different percentage of rice husk ash and lime were added as stabilizer for improving the characteristics of clay. 2%, 4%, 6%, 8% and 10% of rice husk ash and lime were added respectively. The laboratory test results revealed 6.0%-12% moisture content, 1.0-2.9 specific gravity, 37.83%-60.90% C.B.R, 71.66KN/m²-139.55KN/m² share stress, 21%-42% liquid limit, 9.7%-27.4% plastic limit, 10.4%-13.3% shrinkage limit, 7.2%-32.2% plasticity index, 1.52g/cm3-1.73g/cm3 maximum dry density, relationships which corresponded with the following percentage of additive 2%, 4%, 6%, 8%, and 10%. For better performance the clay soil of rice husk ash and lime should be used as stabilizer in order to ensure good stability and workability of clay soil.

EXTENSION TEACHING OF MELON FARMERS HOW IMPROVED FARM PRACTICES SHOULD BE USED AND ADOPTED UNDER THEIR OWN INDIVIDUAL FARM LOCATION AND RESOURCE AVAILABILITY IN YAKURR LOCAL GOVERNMENT AREA OF CROSS RIVER STATE, NIGERIA

¹Adinya I. B. and ²Mahmood, H. U.

¹Department of Agricultural Economics and Extension, Cross River University of Technology, Obubra Campus

²Department of Agricultural Economics and Extension, Taraba State University, Jaligo

 E Mail: dradinyaignatius@gmail.com

ABSTRACT

The study analyzes extension teaching of melon farmers how improved farm practices should be used and adopted under their own individual farm location and resource availability in Yakurr Local Government Area of Cross River State. Data were collected from 76 respondents in the study area using proportional sampling techniques and the 76 respondents were picked from the list of farmers in extension agents’ list that covers the study area. Data collected were analyzed using descriptive statistics. The rankling of sources of information regarding new innovations in melon production in the study area saw extension agent (47.36%) as major source of information regarding to new technologies in melon production. The radio (22.36%), television (19.74%). friends / neighbour (9.21%) and internet / website information (1.32%) were ranked second, third, fourth and fifth respectively. The result of the test of hypothesis shows that there is significant different in yield of melon farmers that were trained by skilled extension agents and yield of melon farmers that were not trained. It was recommended that government should train more extension agents and post them to rural areas were melon farms were established this would enable more farmers to adopt innovation that would lead to increased productivities and increased standard of living in rural communities.