EFFECTS OF NITROGEN FERTILIZER AND PLANT SPACING ON TWO PASTURE GRASSES (BRACHIARIA DECUMBENS AND DIGITARIA DECUMBENS)
ABSTRACT
A field experiment was conducted in the early growing season (April- July) of 2014 at the Teaching and Research farm of the University of Benin. The objective of the study was to evaluate the effects of three rates (0, 120, 240 kg ha-1) of NPK fertilizer and 2 plant spacings (30 x 30 cm and 30 x 40 cm) on the growth and herbage yield of two pasture grasses (Brachiaria decumbens and Digitaria decumbens).
The 12 factorial treatments were laid out in a randomized complete block design (RCBD) and replicated 3 times. Rooted propagules of uniform height (10 cm) were transplanted into the plots based on treatments. Fertilizer was applied at 6 weeks after transplanting to the respective plots when the seedlings had established. Variables measured at 6, 12 and 18 weeks after transplanting were sward height (cm), number of tillers and fresh herbage yield (kg ha-1). All variables decreased in values between 12 and 18 WAT.
However, at 12 WAT Brachiaria decumbens furnished significantly heavier fresh herbage yield ( 5.9 t ha-1) compared to Digitaria decumbens (5.3 t ha-1). Generally, the variables increased as fertilizer application increased. The trend for fresh herbage yield was 240 kg ha-1 NPK (7.6 t ha-1) > 120 kg ha-1 NPK ( 6.1 t ha-1) > 0 kg ha-1 NPK (3.1 t ha-1). Brachiaria decumbens obtained the significantly ( p At 12 WAT, the wider plant spacing (30 x 40 cm) furnished significantly (P
CHAPTER ONE
1.0 Introduction
Nigerian's 101 million herd of domestic ruminants (Fed Ministry of Agriculture and Water Resources, 2008) depend on forage and fodder crops for their productivity. It is estimated that only a dismal 3% of the total livestock are reared on improved pastures (Okorie and Sanda , 1992). Similarly, an extensive portion of the 32.42 million hectres of grazing land in Nigeria are undeveloped and composed of low yielding indigenous forage species with low quality (Shiawoya and Tsado, 2011). Subsequently,these grazing reserves will be developed through direct seeding or transplanting of improved pasture species. (Bogdan, 1977).
The humid zone of Nigeria which has a rainy season of 8 months is potentially a forage production centre (Ezenwa and Aken'Ova, 1998). Although the humid zone of Nigeria was not amajor cattle production area because of the prevalence of tsetse fly with its associated disease (trypanosomiasis) problem, the trend has changed in recent years. The encroachment of the derived savanna due to land clearing coupled with population explosion are instrumental to this change. There has been a rapid increase in the population of non-trypanotolerant white Fulani zebu and trypanotolerant breeds (Ndama and Muturu) in southern Nigeria.
Generally, the cultivation of forage crops for feeding livestock is not a common activity in Nigeria. For this reason, most improved pasture grasses have only been subjected to agronomic evaluations inside research institutes and few modern livestock farms in the conventional livestock producing region of northern Nigeria. Bracharia decumbens and Digitaria decumbens are relatively new pasture grasses that were recently introduced into the humid of Nigeria (Ogedegbe, personal communication). Generally, low nitrogen supply hampers and degrades pastures (Werner, 1994).
Fertilizer application increases both dry matter and crude protein yields of forage grasses (Harding, 2005). Plant spacing significantly affected the survivability, crude protein and herbage yield of elephant grass (Akinola, 1982). Furthermore, pasture grasses thrive under moderately humid environments close spacing (20 x 20 cm) of rooted sprigs of signal grass established faster than widely spread sprigs (Okeagu and Agushi, 1990) which may be less prone to disease outbreaks (Humphreys, 1999). For the aforementioned reasons, it is necessary to evaluate pasture grasses under humid environmental conditions in order to deduce an appropriate agronomic system for their management. The objectives of the study were:
- To evaluate the influence of NPK fertilizer on the growth and herbage yield of two pasture grasses(Brachiaria decumbens and Digitaria decumbens)
- To evaluate the effect of spacing on the growth and herbage yield of two pasture grasses(Brachiaria decumbens and Digitaria decumbens)
CHAPTER TWO
2.0 Literature Review
2.1 Introduction
The review of relevant literature is the main topic of this chapter. A literature review covers theoretical and methodological contributions to a certain issue in addition to the state of knowledge at the time of writing. It provides information about the state of the art in relation to the subject you are writing about. It examines the body of work on the chosen subject. The literature evaluation in this study comprises the …
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TABLE OF CONTENTSPRELIMINARY PAGES
- Title page
- Approval page
- Dedication
- Acknowledgement
- Table of Contents
- Abstract
- 1.1 Introduction
- 1.2 Objectives of the study
- 2.0 Literature Review
- 2.1 Description of Test Crop
- 2.1.1 Brachiaria decumbens
- 2.2 Important of Pasture Grasses
- 2.3 Effect of Plant Spacing on Pasture Establishment
- 2.4 Effect of Fertilizer Application on Growth of Grasses
- 2.5 Effect of Fertilizer Application on Herbage Yield of Grasses
- 3.0 Materials and Methods
- 3.1 Experimental Site
- 3.2 Collection of Plant Propagules and Fertilizer
- 3.3 Treatments and Experimental Design
- 3.4 Cultural Practices
- 3.4.1 Marking out of experimental site
- 3.4.2 Land preparation
- 3.4.3 Transplanting of vegetative propagules
- 3.4.4 Fertilizer application
- 3.4.5 Weed control, pest and disease monitoring
- 3.5 Observation and Data Collection
- 3.5.1 Fresh herbage yield (kg ha-1)
- 3.5.2 Sward height (cm)
- 3.5.3 Number of tillers
- 3.6 Statistical Analysis
- 4.0 Results
- 5.0 Discussion
- 5.1 Effect of grass
- 5.2 Effect of plant spacing
- 5.3 Effect of fertilizer application
- 5.4 Interaction and correlation
- 6.0 Conclusion and Recommendation
- 6.1 Conclusion
- 6.2 Recommendation
REFERENCES
Disclaimer for Complete Material Utilization
The displayed research work titled "Effects of Nitrogen Fertilizer and Plant Spacing on Two Pasture Grasses (Brachiaria Decumbens and Digitaria Decumbens)" is stated as a research guideline towards accomplishing your assigned project / seminar research work. All the research materials on this website are ONLY for research purposes and should be used as a guideline in developing your research work. For no reason should you copy word for word as projectlist.com.ng will not be liable for any who copied the material. By ordering the complete research guideline, it signifies that you've accepted our terms of service.
PRELIMINARY PAGES
- Title page
- Approval page
- Dedication
- Acknowledgement
- Table of Contents
- Abstract
- 1.1 Introduction
- 1.2 Objectives of the study
- 2.0 Literature Review
- 2.1 Description of Test Crop
- 2.1.1 Brachiaria decumbens
- 2.2 Important of Pasture Grasses
- 2.3 Effect of Plant Spacing on Pasture Establishment
- 2.4 Effect of Fertilizer Application on Growth of Grasses
- 2.5 Effect of Fertilizer Application on Herbage Yield of Grasses
- 3.0 Materials and Methods
- 3.1 Experimental Site
- 3.2 Collection of Plant Propagules and Fertilizer
- 3.3 Treatments and Experimental Design
- 3.4 Cultural Practices
- 3.4.1 Marking out of experimental site
- 3.4.2 Land preparation
- 3.4.3 Transplanting of vegetative propagules
- 3.4.4 Fertilizer application
- 3.4.5 Weed control, pest and disease monitoring
- 3.5 Observation and Data Collection
- 3.5.1 Fresh herbage yield (kg ha-1)
- 3.5.2 Sward height (cm)
- 3.5.3 Number of tillers
- 3.6 Statistical Analysis
- 4.0 Results
- 5.0 Discussion
- 5.1 Effect of grass
- 5.2 Effect of plant spacing
- 5.3 Effect of fertilizer application
- 5.4 Interaction and correlation
- 6.0 Conclusion and Recommendation
- 6.1 Conclusion
- 6.2 Recommendation
REFERENCES
Disclaimer for Complete Material Utilization
The displayed research work titled "Effects of Nitrogen Fertilizer and Plant Spacing on Two Pasture Grasses (Brachiaria Decumbens and Digitaria Decumbens)" is stated as a research guideline towards accomplishing your assigned project / seminar research work. All the research materials on this website are ONLY for research purposes and should be used as a guideline in developing your research work. For no reason should you copy word for word as projectlist.com.ng will not be liable for any who copied the material. By ordering the complete research guideline, it signifies that you've accepted our terms of service.
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