Abstract
This study was carried out to determine the skill improvement needs of teachers of Agricultural Education in soil conservation in Colleges of Education in South-eastern Nigeria. Four research questions were developed and answered while two null hypotheses were formulated and tested at 0.05 level of significance and 100 degrees of freedom. Descriptive survey research design was adopted for the study. The entire population of 109 respondents consisting of 20 lecturers in the University and 89 teachers in Colleges of Education, in South-eastern Nigeria were used for the study. A 242 – item structured questionnaire, developed from the literature reviewed for the study was used to collect data from the respondents. Each questionnaire item was divided into two categories of required and performance. The required category had a 4 response options of Highly Required (HR), Averagely Required (AR), Slightly Required (SR) and Not Required. The performance category also had 4 response options of High Performance (HP), Average Performance (AP), Low Performance (LP) and No Performance (NP). The questionnaire items were face validated by five experts. The internal consistency of the questionnaire was determined using Cronbach alpha method and coefficients of 0.83 and 0.97 were obtained for professional and technical skill questionnaire respectively. The 109 copies of the questionnaire were admininstered on the respondents with the help of five research assistants. 102 copies of the questionnaire administered were retrieved and analysed. Weighted mean, standard deviation and Improvement Need Index (INI) were used to answer the research questions while t-test statistic was used to test the null hypotheses. The findings of the study revealed that 39 skill items in instruction and 203 skill items in soil conservation were required for effective teaching of students in Colleges of Education in the study area. It was also found out that, teachers of Agricultural Education need improvement in 38 out of 39 skill items in instruction and 152 out of 203 skills items in soil conservation. The findings on hypotheses revealed that there was no significant difference in the mean ratings of the respondents (lecturers and teachers) on 35 out of 39 skill items in instruction, and 174 out of 203 skill items in soil conservation that were required for effective teaching of students in Colleges of Education in South-eastern Nigeria. It was therefore recommended that the teachers of Agricultural Education should utilize the identified skills in instruction and soil conservation to seek for sponsorship from their administrators to re-train themselves in the areas of their deficiency
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CHAPTER 1
INTRODUCTION Background of the Study
Production of crop plants and animals is carried out on the soil by man. Soil is, therefore, a natural resource that supports life. Olaitan and Lombin (1985) said that soil is a natural body of loose unconsolidated material which constitutes a thin layer several meters deep on the earth’s surface. The authors further stated that soil is derived from weathered parent rock materials, decaying organic matter and composed of solid particles with liquid and gasses occupying the spaces between the particles. Herran and Donahue (1991) stated that soil is the mineral and organic surfaces of the earth capable of supporting upland plants. The authors affirmed that soil has been formed by the active factors of climate and biosphere exerting their influence on parent material. With reference to this study, soil refers to the loose material derived from weathered rocks, decayed organic matter and formed through the action of climate and biosphere on the rocks.
Soil is composed of air, water, organic matter and living organisms. Brady and Weil (1999) stated that soil with its components perform five functions which are: as a medium for plant growth; a system for storage, supply and purification of water; a recycling system for plant nutrients and organic matter; a habitat for organisms and as an engineering medium.
As a medium for plant growth, soil holds the plant firmly. The soil particles that are together make the soil to be compact. When the plant grows, the meristem of the plant penetrates into the compact soil in such a way that the plant becomes anchored and stands firmly on the earth’s surface without falling over. Olaitan and Lombin (1985) observed that soil serves as an anchorage for most plants except for some of the creepers and climbers. Brady and Weil (1999) indicated that the soil mass provides physical support by anchoring the root system so that the plant does not fall over. The authors concluded that due to the ability of the soil to hold the plant firmly, the soil therefore, determines the nature of vegetation present and indirectly the number and types of animals (including people) that the vegetation can support in a place.
The soil acts as a medium of storage of nutrients for plants, harbouring 16 nutrient elements. The 16 nutrient elements are classified into two; major and minor nutrient elements. The major ones are Nitrogen, Phosphorus, Potassium, Calcium, Magnesium and Sulphur while iron, cobalt and manganese among others are minor or trace elements. These nutrient elements are absorbed in ionic form through the process of Cation Exchange Capacity (CEC). CEC is the amount of exchangeable cation adsorbed per unit weight of the soil (me/100g) at a particular pH. Brady and Weil (1999), stated that the nutrient elements are utilized at different rates and amount, interacting metabolically to influence the biochemical and biophysical characteristics of plants and yield. The authors further stated that when
an essential element such as Nitrogen, Phosphorus or Potassium is limiting or becomes stressed in the soil, biochemical and biophysical changes occur in plants, which produces specific visible changes of deficiency symptoms for various crops. This is an indication that the store house of the soil for such element is empty or very low to satisfy the plant during nutrient removal.
The soil also stores water for plant’s use. When rain falls, the water is absorbed by the soil through the process of infiltration. The water is then retained in the soil by adhesive (mutual attraction between the soil solids and water molecules) and cohesive (the attraction water molecules have for each other) forces. The water in the soil dissolves the soil nutrients and also helps in the transportation of these absorbed nutrients from the root and food manufactured by the leaves to other parts of the plants. According to Munson (1990), soil moisture (water) is extremely important in the uptake and utilization of all the essential elements in the soil. Its availability in the soil replaces the moisture lost through the stomata of the leaves. Brady and Weil (1999) observed that as long as plant leaves are exposed to sunlight, the plant requires a continuous stream of water from the soil to use in cooling, nutrient dissolution and transportation, turgor maintenance and photosynthesis. The authors concluded that plants use water continuously, so, the water holding capacity of the soil is essential for plants’ survival.
Soil provides favourable environment for living organisms to function. The soil, therefore, harbours, protects and provides them with sufficient air and water for their survival. Brady and Weil (1999)
observed that soil is a habitat for many macro and micro organisms. Enrenfeld (2001), declared that soil is a biological habitat, harbouring and sustaining a myriad of living organisms. The soil living organisms utilize soil and in return act on dead plants and animals causing them to decay, thereby increasing the nutrients capacity of soil. Brady and Weil (1999) noted that within the soil, waste products, dead bodies of plants, animals and people are decomposed and assimilated; and their basic elements made available for re- use by the action of living organisms. Goetz (2005) affirmed that soil living organisms are important to the soil because they improve the soil fertility by breaking down the plant and animal tissues. During this process, the nutrient content of these tissues are released to the soil and minerals that were formerly fixed are released for further use by the subsequent plants growing on the soil. It therefore means that when the soil is provided with organic manure, the nutrient status of the soil is increased through the action of soil living organisms.
The soil functions as an engineering medium, to support buildings, roads, airports and people. Brady and Weil (1999) stated that in human built system, soil serves as an engineering medium, providing materials in form of earth-fill and bricks and foundations for virtually every road, airport and house. Eijackers and Hamers (2007) indicated that soil functions as a platform for man-made structures like buildings, airports and highways. This means that the soil serves as a base material that enhances the construction of farm structures and buildings in addition to providing materials used for conserving it. For
example concreting in erosion control is made possible by mixing soil with other materials.
The soil performs invaluable functions that positively affect plants, animals and man. To enable the soil continue to function interactively and continuously to the benefit of the plants, animals and man, it requires conservation.
Conservation as explained in Encyclopaedia Britannica (2000) means the concern and strategies surrounding the protection of natural resources from over-use or degradation. Goetz (2005) stated that conservation is a planned management of a natural resource or the total environment of a particular ecosystem to prevent exploitation, pollution, destruction or neglect and to ensure the future use of the resource. Wikipedia (2008) stated that conservation is the act of preserving and renewing resource to assure their highest economic or social benefit over the longest period of time. The author further stated that clean water, healthy soil and clean air are the natural resources that are worth conserving for future generations. Silvertooth (2001) said that conservation of soil is an important responsibility of those involved in crop production and land management. This according to the author is because the more every acre of land is cultivated for higher yields, the more that land is deprived of its nutrients. In the context of this study, conservation is a process of assisting the soil to acquire and store nutrients, water and organic matter for the sustainability of plants, animals and man. It is also for making the soil
free from degradation activities and nutrient losses due to actions of man and other environmental hazards like landslides and erosion.
Soil conservation is very important as it brings about enhancement in the quality and content of the soil. In the submission of Franzen (1997), soil conservation brings about increase in the organic matter content of the soil; while protecting it from moisture and nutrient losses. Elsevier (2006) summarized the importance of soil conservation to include; enhancement in the chemical, biochemical and physical properties of the soil; which means that when the soil is conserved, there is increase in the number of living organisms, nutrient elements, water and organic matter content of the soil thereby increasing the potential of the soil in the sustainability of crop or animal production for better survival of man.
Conservation of the soil can be carried out in many ways. These include application of manure (organic and inorganic), practicing crop rotation, soil testing, mulching and cover cropping. Harris (1998) stated that soil conservation practices include recycling of organic materials within the soil; while integrating crop and livestock production. Uri, Atwood and Sanabria (2004) said that soil conservation involves minimum or zero tillage, crop rotation, periodic use of cover crops, use of manure and adequate fertilizer, seeding of areas of runoff with grasses, planting rows of trees or shrubs to act as wind-brake, terracing and application of ground limestone to control soil acidity. Agricultural and Agri-field Canada (AAFC) Report series (2007) outlined conservation practices to include addition of manure, reduced
tillage, rotating crops, growing legumes and trees, restricting the density of animals, rotational grazing, mulching and terracing, among others. Crook (2007) affirmed that soil conservation practices include: mulching heavily with hay, construction of channels to create access for water and planting of cover crops and trees. In this study, soil conservation practices include such activities as tillage practices, soil testing and analysis, manure preparation and application, crop rotation, erosion prevention and control and irrigation. Soil conservation practices are taught as a component of soil science in Agricultural Education programme.
Agricultural Education in the view of Ukonze and Olaitan (2009) is a programme designed for equipping students with competency (knowledge, skills and attitudes) in different areas of Agriculture to enable them impart same to learners in schools. Wikipedia (2010) stated that Agricultural Education is an instruction about crop production, livestock management, soil conservation and water conservation among others. Agricultural Education programme is taught to students in Universities and Colleges of Education.
Colleges of Education are tertiary institutions that prepare teachers for a minimum of three years to make them qualify to teach their respective subjects including agriculture in either primary or junior secondary schools. Those who teach Agricultural Education Programme to students in Colleges of Education are called lecturers but in this study are referred to as teachers.
A teacher as defined by the Teachers’ Registration Council of Nigeria-TRCN, (2002) is a person who possesses the capability to impart the acquired competency to learners in a given subject area. Emeka in Azunku (2007) explained a teacher as a person who has acquired special competency required to effectively teach a particular subject area to a group of learners. In the opinion of Wikipedia (2010), a teacher is a person that facilitates learning in a school or college. In this study, a teacher is someone who has been trained in Agricultural Education programme in a University to enable him/her teach same course to students in Colleges of Education. The teacher is hired to teach the course content of agricultural Education because he is expected to possess the required skills.
Skill in the opinion of Jamestrom (2000) is the capability of a person in carrying out a predetermined task with minimum time, energy and material resources. Osinem and Nwaoji (2005) stated that skill is the ability of a person to perform a given task well as a result of training and practice. In the context of this study, skill is the capability, which teachers of Agriculture must possess to enable them teach Agricultural Education including soil conservation practices effectively to their students. To teach soil conservation practices effectively to students, teachers of Agricultural Education must possess both instructional and technical skills.
Instructional skills in the view of Saskatoon (2009) refers to the categories of teaching behaviours that are necessary for structuring appropriate learning experiences for students. Cortified (1996) stated
that a person undergoes a prolonged academic training to enable him or her acquire instructional skills that would help such a person to perform the teaching activities. In this study, instructional skill means the competencies which a teacher of Agricultural Education possesses, that enables him to teach soil conservation practices effectively to students. Such instructional skills are demonstrated in planning, implementing and evaluating different topics in soil conservation. Planning instruction in the view of Encarta (2008) is an act of stating in advance what one intends to do and the means of doing it. In this study, planning means the act of stating in advance what to teach, how and when to teach it. Implementing instruction refers to the actual teaching of the planned instruction to students while evaluation deals with determining how far the objectives set out during planning have been achieved. A teacher that possesses the professional skill in planning, implementing and evaluating instruction is also expected to possess the technical skills.
Technical skill as explained by Higins (1994) means the ability of an individual to use specialised knowledge and technique to carry out a task; that is, the capability a person has that enables him utilize different methods and techniques in a task to accomplish such a task successfully. With reference to this study, technical skill refers to the ability teachers of Agricultural Education possess for teaching soil conservation practices effectively to their students in the Colleges. Technical skill in soil conservation refers to capabilities displayed by teachers while teaching tillage operation, soil testing and analysis,
manure preparation and application, crop rotation, soil erosion prevention and control and irrigation. Lee (2007) submitted that technical skill is the most important factor in job success. For the success of Agricultural Education programme, teachers who graduated from Agricultural Education programme in Universities are hired to teach Agricultural Education including soil conservation to their students in Colleges of Education. This means that teachers with professional and technical skills from Agricultural Education Programme in Universities teach the course to their students in Colleges of Education to enable them teach Agriculture effectively to pupils and students in basic schools. It is therefore expected that graduates of Agricultural Education from Colleges of Education should teach Agriculture effectively to pupils and students in basic schools having been trained professionally and technically in the Colleges.
World Bank report on Africa (2004) indicated that teachers recruited into the teaching positions do not meet the quality required for effective teaching. The Nigerian Education Research and Development Council (NERDC) in Iheji, Ifeanyieze and Olaitan (2010) indicated that
50% of the teachers in Nigerian educational system are found incompetent. Teachers of Agricultural Education in Colleges of Education in South-eastern Nigeria were not exempt from the World Bank and NERDC report as a study carried out by Ella (2007) revealed that graduates of Agricultural Education programme of Colleges of Education in south-eastern Nigeria acquired low competence in content areas of Agricultural Education during their training. For
teachers of Agricultural Education in Colleges of Education to be exonerated from the blame, there is need to find out if they possess the required professional (instructional) and technical (soil conservation) skills or not. The process of determining the skills these teachers possess in instruction and soil conservation could be carried out through assessment.
Assessment according to American School Report (1996) is the process used to gather information and make decision about how well an individual demonstrates skills while carrying out a given task. Okoro (2000) defined assessment as a form of evaluation that uses collected data to estimate the effectiveness of what is being judged. Encarta (2008) stated that assessment means the judgement about something based on understanding the situation. Wikipedia (2010) viewed assessment as the process of documenting knowledge, skills, attitudes or beliefs of an individual in a particular subject area or field of study. In this study, assessment refers to the process of gathering information about the skills teachers of Agricultural Education in Colleges of Education possess in instruction and soil conservation practices to find out areas of strengths and weaknesses. That is, finding out the skills these teachers possess in planning, implementing and evaluating instruction and in soil conservation practices which are tillage operation, soil testing and analysis, manure preparation and application, soil erosion prevention and control and irrigation to determine area of their deficiencies through comparism with standard.
There are two steps that could be followed while carrying out assessment. They are as follows
– determine the assessment procedure: that is, specific activities or tasks that will be used to evaluate how well the individual can carry out the expected task, example demonstrating tillage operation to students.
– decide on how to judge the person: that is, determining the way to rate the person carrying out the task. The assessment of the teachers of Agricultural Education Programme was carried out by rating their performances.
Performance as viewed by Quirk (1995) means the process of carrying out a piece of work or function. In the view of Hornby (2006), performance means how well or bad an individual carries out a given task. In the context of this study, performance means how well the teachers of Agricultural Education in Colleges of Education could demonstrate the skills required in teaching soil conservation practices to their students. To find out how well teachers of Agricultural Education could demonstrate the required soil conservation skills, there must be needs assessment.
Need assessment in the view of Rouda and Kussy (1995) is a systematic explanation of the way things are and the way they should be. The authors further stated that need assessment is usually associated with what an individual is expected to perform. In the opinion of Archer, Cripe and McCaslin (2009), need assessment is a process of identifying gaps, that is, discrepancies between what should
be and what the current situation is. In this study, need assessment was determined by identifying the skills required in instruction and soil conservation practices and the level teachers of Agricultural Education in Colleges of Education could perform each required skill items. This is to help determine the gap. This gap according to Rosette and Sheldon (2001) could be obtained through observation or perception. Observation is the actual rating of the subjects with a rating scale when they are performing tasks while perception is the use of questionnaire to obtain information on how the respondents could perform the required tasks when they are asked to do so. This study employed the use of questionnaire to obtain information from the respondents on the level each skill item in instruction and soil conservation was required and the level teachers of Agricultural Education could perform each required skill item; the difference between the two views constituted the gap. Identification of positive gap in any skill item means that they need improvement.
Improvement in the opinion of Princeton (2007) means a change for better, that is, progress in development. Galesburg (2007), viewed improvement as an activity undertaken based on meeting the target objectives and satisfaction from lower achievement. With reference to this study, improvement connotes the performance gap to be filled by teachers of Agricultural Education in Colleges of Education in order to train their students effectively. That is, this study collected information from the respondents through the use of questionnaire to determine what they possess and what they should possess thereby, generating
gaps that are to be filled by the findings of this study in teaching soil conservation practices as contained in Agricultural Education curriculum of Colleges of Education in South-eastern Nigeria.
Statement of the Problem
Agriculture is a skill oriented programme that is taught to students in schools, colleges and universities. The Federal Republic of Nigeria in its National Policy on Education (2004) stated that primary education should afford every child the opportunity to develop manipulative skills in Agriculture. The document further stated that pre- vocational programme in junior secondary school should provide students with entry level skills as a basis for acquiring occupational skills for employment in Agricultural industries in later years. Gbeyega in Iheji, Ifeanyieze and Olaitan (2010) noted that teachers of Agriculture are responsible for helping pupils and students master manipulative skills needed for employment in agricultural occupations in later life. It is, therefore, expected that the pupils and students on graduation should be able to demonstrate basic skills in Agriculture but this expectation is far from being realized. Evidences abound ((World Bank report (2004), NERDC Report in Iheji et al (2010) and Ella (2007), to show that teachers of Agricultural Education at Colleges of Education are deficient in soil conservation practices and, therefore, they are not competent enough to expose their students effectively to all areas of Agricultural Education including soil conservation practices. Interaction of the researcher with some teachers of Agriculture in junior
secondary schools in a workshop organised by Ohozara local government council in 2009 for teachers of the basic schools on “school farm management skills in schools” revealed that they blame their teachers for not exposing them well to skills in soil conservation practices during their training at Colleges of Education.
Inadequate exposure of graduates of Agricultural Education by their teachers to curriculum content areas of Agriculture while in training affects their delivery to pupils and students they teach. Their teachers, therefore, need improvement because any improvement on the competence of these teachers of Agricultural Education in the Colleges will help improve the quality of teachers of Agriculture in basic schools in future. In determining the improvement needed, the teachers must be assessed on the skills they possess and what they need to possess; the difference between the two constituted the gap that this study determined. It was, therefore, necessary to determine skill improvement needs of teachers of Agricultural Education Programme in instruction and soil conservation in Colleges of Education in South-eastern Nigeria.
Purpose of the Study
The major purpose of this study was to determine the skill improvement needs of teachers of Agricultural Education in soil conservation in Colleges of Education in South-eastern Nigeria. Specifically, the study sought to:
1) identify instructional skills required by teachers of Agricultural
Education for effective teaching of soil conservation in Colleges of Education in South-eastern Nigeria.
2) identify soil conservation skills required by teachers of Agricultural Education for effective teaching of students in Colleges of Education in South-eastern Nigeria.
3) determine the instructional skills in which teachers of Agricultural Education need improvement for effective teaching of soil conservation in Colleges of Education in South-eastern Nigeria.
4) determine the soil conservation skills in which teachers of agricultural Education need improvement for effective teaching of students in Colleges of Education.
Significance of the Study
This study is of immense benefit to teachers and students of agricultural education programme, farmers and administrators of Colleges of Education in Nigeria. The study provided information to teachers on professional and technical skills required in soil conservation practices and areas where they need improvement. This information could be utilized by the teachers to seek for assistance from their institutions for a re-training programme in soil conservation either through workshops or short duration courses to improve themselves.
The students of Agricultural Education in Colleges of Education could also benefit from the findings of this study as they would have
the opportunity of benefiting from the enriched knowledge of their teachers in soil conservation. This could help to equip them professionally and technically for teaching soil conservation component of Agricultural curriculum in primary or junior secondary schools in the study area.
The farmers in the communities could also benefit from the information generated by this study. This is because teachers of Agricultural Education Programmes interact with farmers in the communities; so improvement of these teachers will definitely assist them to counsel farmers on how to conserve the soil.
The administrators of Colleges of Education could benefit from the findings of this study on the areas of instruction and soil conservation practices where their teachers need improvement. This is because the administrators will be aware of the deficiencies of their teachers thereby realistically assisting them for re-training on their staff development programme of the college.
Research Question
The following research questions guided the study. They were:
1) What are the instructional skills required by teachers of Agricultural Education for effective teaching of soil conservation in Colleges of Education in South-eastern Nigeria?
2) What are the soil conservation skills required by teachers of Agricultural Education for effective teaching of students in Colleges of Education in South-eastern Nigeria?
3) What are the instructional skills where teachers of Agricultural Education needs improvement for effective teaching of soil conservation in Colleges of Education in South-eastern Nigeria?
4) What are the soil conservation skills where teachers of Agricultural Education needs improvement for effective teaching of students in Colleges of Education in South-eastern Nigeria?
Hypotheses
The following null hypotheses were formulated for the study and tested at 0.05 level of significance.
Ho1 There is no significant difference in the mean ratings of the responses of lecturers of Agricultural Education in Universities and Teachers of Agricultural Education in Colleges of Education on the instructional skills required by teachers for effective teaching of soil conservation in Colleges of Education in South-eastern Nigeria.
Ho2 There is no significant difference in the mean ratings of the responses of lecturers of Agricultural Education in Universities and teachers of Agricultural Education in Colleges of Education on the soil conservation skills required by teachers for effective teaching of students in Colleges of Education.
Scope of the Study
The study was restricted to the identification of professional and technical skills required for effective teaching of soil conservation
content of Agricultural education programme in Colleges of Education in South Eastern Nigeria. The study specifically covered identification of skills required in instruction (planning, implementing and evaluation) and soil conservation practices ( tillage, soil testing, manure, crop rotation, soil erosion and irrigation) for effective teaching of students. .
This material content is developed to serve as a GUIDE for students to conduct academic research
SKILL IMPROVEMENT NEEDS OF TEACHERS OF AGRICULTURAL EDUCATION IN SOIL CONSERVATION IN COLLEGES OF EDUCATION IN SOUTH-EASTERN NIGERIA>
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