INTERNATIONAL JOURNAL OF LATEST TECHNOLOGY IN ENGINEERING,
MANAGEMENT & APPLIED SCIENCE (IJLTEMAS)
ISSN 2278-2540 | DOI: 10.51583/IJLTEMAS | Volume XIII, Issue XII, December 2024
www.ijltemas.in Page 35
Effects of Fish Pond Effluent and Poultry Manure on Growth
Performance of Maize (Zea Mays) in Port Harcourt, South-South
Nigeria
1
Akukalia, C. M,
*1
Elenwo, C. E. and
2
Amakiri, M.A
1
Department of Soil Science, Rivers State University
2
Department of Forestry and Environment, Rivers State University
*Corresponding Author
DOI : https://doi.org/10.51583/IJLTEMAS.2024.131203
Received: 07 December 2024; Accepted: 19 December 2024; Published: 31 December 2024
Abstract: The effect of fish pond effluent and poultry droppings on maize performance was investigated at the Teaching and
Research farm of the Faculty of Agriculture, University of Port Harcourt, and Rivers State, Nigeria. The experiment which was
laid out in a Completely Randomized Design comprised of twelve treatments and three replications. The study had two levels of
fish pond effluent (Diluted and undiluted) the treatments were: The treatments were; control (CTR), 0.2t/ha Poultry droppings
(PDA), 0.4t/ha Poultry droppings (PDB), 0.6t/ha Poultry droppings (PDC), 0.8t/ha Poultry droppings (PDD), 0.2t/ha Poultry
droppings+ diluted effluent (PFA50), 0.4t/ha Poultry droppings + diluted effluent (PFB50), 0.6t/ha Poultry droppings + diluted
effluent (PFC50), 0.8t/ha Poultry droppings + diluted effluent (PFD50), 0.2t/ha Poultry droppings + undiluted effluent (PEA100),
0.4t/ha Poultry droppings + undiluted effluent (PEB100), 0.6t/ha Poultry droppings + undiluted effluent (PEC100) and 0.8t/ha
Poultry droppings + undiluted effluent (PED100). At 8 weeks, Plant height ranged from 108.40cm at the control to 162.90 cm at
PDD treated plot. Number of leaves ranged from 16.05 at the control to 24.82 at PED100 treated plot. Leaf area ranged from
134.40 cm
2
at the control to 381.20 at the PED 100 treated plot. Results revealed that, fish pond effluent when integrated with
poultry droppings significantly influenced all the growth parameters accessed. Based on the results obtained, it is recommended
that, Fish Pond Effluent plus poultry manure be applied to increase plant growth, nutrient status and soil fertility level.
I. Introduction
Application of inorganic fertilizers had been the fastest solution to prevail over the nutrient deficiencies in the soils, but due to
problems associated with its continuous usage such as: high cost, reduced crop yield, increased soil acidity, nutrient imbalance
and limited or untimely availability of inorganic fertilizers made farmers develop interest on usage of organic manure (Jote
2023; Titirmare,et al.,2023). In many areas, integrating aquaculture with agriculture has become a channel for increasing the use
of limited water resources, decreasing dependence on chemical fertilizers (Halwart and Ajayi 2024,) and providing a greater
economic return per unit of water. Fish pond effluent has been used as soil amendment for crop production in the world. It has a
strong potential to replace bagged fertilizer in part or full (Firew 2018) Fish Pond Effluent had been reported to contain high
content of organic matter and plant nutrients (Onuorah et al., 2021). (Isitekhale and Adamu 2016) reported that Fish Pond
Effluent application increased Soil contents of available P, K, Mg, Ca and ECEC significantly. Also, in recent times, interest of
researchers towards utilization of poultry manure as organic fertilizer has increased since poultry manure had been reported to
contain high content of organic matter and plant nutrients (Rasool et al.,2023). Escalating prices of inorganic fertilizers due to the
increase in the fuel prices has also prompted the use of poultry manure (Okonwo and Mensa 2012 ) Similarly, organic wastes are
also being advocated for by different environmental organizations world-wide to preserve the sustainability of agricultural
systems.
Maize or corn (Zea mays L.) is an important annual cereal crop of the world belonging to family Poaceae. Zea is an ancient
Greek word which means “sustaining lifeand Mays is a word from Taino language meaning “life giver.” The word “maize” is
from the Spanish connotation “maizewhich is the best way of describing the plant. It is grown mainly in a developing country
like Nigeria which provides a source of income to the large population of small holder farmers. No cereal crop is produced
annually more than maize in the country due to its high demand from consumers and its great nutritional value (Eleweanya et. al.,
2005) It is also rich in dietary fiber and calories which provide a good source of energy, a staple food for humans, livestock and
an important raw material for many industrial products (Agbogidi et al., 2007).
Also, Maize has also been a priority crop in Nigeria under the flagship Agricultural programs of the Government since 2012 and
as such, maize farmers had received deliberate support in terms of access to subsidized fertilizer and improved seed (Federal
Ministry of Agriculture and Rural Development, 2011). However, despite all these supports, low yield of maize remains a key
challenge. This may be attributed to the low soil fertility level of the Nigerian soils and therefore requires remedy. Studies have
revealed a host of nutrient management exercises embarked on by smallholder African farmers (Parwada et al., 2023). While the
relative adoption rates between organic and mineral nutrients vary by location, the incidence of organic practices is often more
than the use of mineral fertilizers. Furthermore, poultry droppings are preferred amongst other animal wastes because of its high
INTERNATIONAL JOURNAL OF LATEST TECHNOLOGY IN ENGINEERING,
MANAGEMENT & APPLIED SCIENCE (IJLTEMAS)
ISSN 2278-2540 | DOI: 10.51583/IJLTEMAS | Volume XIII, Issue XII, December 2024
www.ijltemas.in Page 36
concentration of macro-nutrients (Shehu et al.,2019). The objective of this study is therefore to investigate the effect of Fish Pond
Effluent and Poultry manure on the growth performance of Maize (Zea mays) in Port-H arcourt, South-South, Port Harcourt,
II. Materials and Methods
Experimental Site
The research was carried out in the Teaching and Research farm of University of Port Harcourt. The site is located at longitude
4.9070
0
N and 6.9162
0
E with an elevation of 13m above sea level. The site has an average annual rainfall of about 2,470mm,
relative humidity of 70.90% and a mean annual temperature of 32
0
C. (Source)
Land Preparation, Experimental Design and Treatment Allocation
The site for the experiment was cleared and tilled manually with hoe and then marked out into plots. The experiment which was
laid out in a Completely Randomized Design (CRD), comprised of two levels of fish pond effluent (Diluted and Undiluted),
twelve treatments and three replications. Fish Pond Effluent and Poultry manure were applied to the respective plots two weeks
before planting to allow for decomposition and mineralization of nutrients. The treatment included the followings; Control
(CTR), 0.2t/ha Poultry droppings (PDA), 0.4t/ha Poultry manure (PDB), 0.6t/ha Poultry manure (PDC), 0.8t/ha Poultry manure
(PDD), 0.2t/ha Poultry manure + diluted effluent (PFA50), 0.4t/ha Poultry manure + diluted effluent (PFB50), 0.6t/ha Poultry
manure + diluted effluent (PFC50), 0.8t/ha Poultry manure + diluted effluent (PFD50), 0.2t/ha Poultry manure + undiluted
effluent (PEA100), 0.4t/ha Poultry manure + undiluted effluent (PEB100), 0.6t/ha Poultry manure + undiluted effluent (PEC100)
and 0.8t/ha Poultry manure + undiluted effluent (PED100). Two seeds of the Hybrid Maize (Oba Super 6) were sown per hole at
the spacing of 75cm x 25cm and at the depth of 3cm two weeks after the application of the treatment materials. Seedlings were
thinned down to one plant per hole and empty stands were supplied thereafter. Weeding was done manually by hand picking at
the two weeks intervals until harvest to reduce the competition between the maize plant and weeds for available nutrient, water
and light.
Data Collection
Data on Plant height, Number of leaves, Leaf area at 4th, 6
th
and 8
th
Weeks After sowing (WAPS) were collected and Number of
nodes was collected at 6
th
and 8
th
WAP. The following yield parameters were collected; Fresh yield, Length of cob, Diameter of
cob and Weight of 1000 kernel. Five maize plants were selected randomly from each plot, tagged and were used for the
measurement of the aforementioned growth parameters. The data that were generated from the study were subjected to the
statistical Analysis of Variance (ANOVA) while the treatment means were compared using the Least Significant Difference
(LSD) at 0.05% level of probability.
III. Results
Chemical Properties of Fish Pond Effluent and poultry dropping used in the study are presented on table 1 below. The two
treatments were slightly acidic having pH of 5.6 for poultry manure to 5.9 for fish effluent. Fish effluent contained very high
calcium 40.2 mg/l while poultry dropping had 11.6 mg/kg. Fish pond effluent also had high Mg and K when compared with ca,
mg and k contents of the poultry manure. Phosphorus, Nitrogen and Sulphur contents of poultry manure are higher than that of
fish pond effluent.
Table 1: Chemical composition of Fish Pond Effluent and Poultry Manure
Chemical Properties
pH
Calcium
(Ca)
Magnesium
(Mg)
Potassium
(k)
Phosphorus
(P)
Nitrogen
(N)
Sulphur
(S)
Fish Pond Effluent (mg/l)
5.9
40.2
8.27
35.46
2.54
0.78
0.5
Poultry Manure (Mg/kg)
5.6
11.6
2.2
8.3
5.6
15.3
3.5
Effect of Fish Pond Effluent and Poultry Manure on Plant Height.
Effect of fish pond effluent and poultry droppings on plant height is presented on table 2.
At 4WAP, plant height ranged from 64.74 cm at the control plot to 91.12 cm at the PED100 plot. At 6 WAP plant height ranged
from 86.20 cm at the control to 138.90 at the PDD plot. And at 8WAP it ranged 108.40 cm at the control to162.90 cm at the PDD
plot. At 8WAP there were significant differences among the treatments and the PDD treatment plot recorded the highest.
Table 2: Effect of Fish Pond Effluent and Poultry Manure on plant height (cm)
Treatment
4 WAP (cm)
6 WAP (cm)
8 WAP
PDA
66.43g
99.0ef
123.70d
PDB
70.94ef
114.60c
141.30c
INTERNATIONAL JOURNAL OF LATEST TECHNOLOGY IN ENGINEERING,
MANAGEMENT & APPLIED SCIENCE (IJLTEMAS)
ISSN 2278-2540 | DOI: 10.51583/IJLTEMAS | Volume XIII, Issue XII, December 2024
www.ijltemas.in Page 37
PDC
73.58e
112.20c
154.50b
PDD
82.54bc
138.90a
162.90a
PFA50
71.42ef
94.20f
115.00f
PFB50
72.86e
106.20d
136.00c
PFC50
67.31fg
98.00f
152.10b
PFD50
78.60cd
130.20b
156.80ab
PEA100
75.54de
104.60d
141.60c
PEB100
74.13e
106.10d
123.60d
PEC100
83.34b
103.70de
136.90c
PED100
91.12a
115.70c
136.60c
CONTROL
64.74g
86.20g
108.40f
L.S.D P<0.05
4.20
5.06
6.58
Means followed by the same letter(s) in the same column are not significantly different from one another at 5% level of
probability using least significant different (L.S.D), WAP (Weeks after planting
Effect of Fish Pond Effluent and Poultry Manure on Number of Leaves.
The result of the effects of fish pond effluent and poultry droppings on number of leaves is shown on Table 3. At 4WAP number
of leaves ranged from 5.70 at the plot treated PDC to the 8.57 at the plot PFD 50 and at 6 WAP values ranged from 13.22 at the
control to 21.33 at the PEA100 and PEC100 treatments plot and at 8WAP number of leaves ranged from 16.05 at the control to
26.16 at the PED100 treatment plot. Number of leaves at PED100 plot was significantly the highest among the treatments for
number of leaves.
Table 3: Effect of Fish Pond Effluent and poultry Manure on Number of Leaves.
4WAP
6WAP
8WAP
5.89e
15.92def
21.10cd
6.07de
17.86cde
24.01abc
5.70e
18.29bcd
21.61bcd
5.75e
19.20abcd
24.06abc
7.77abc
14.39ef
19.18de
7.91ab
19.84abc
23.55abc
7.36bc
19.14abcd
22.56bc
8.57a
21.61ab
24.02abc
7.64abc
21.33abc
24.82ab
7.41bc
18.28bcd
21.56bcd
6.89cd
21.33abc
24.80ab
7.85ab
22.56a
26.16a
5.81e
13.22f
16.05e
0.93
3.60
3.33
Means followed by the same letter(s) in the same column are not significantly different from one another at 5% level of
probability using least significant different (L.S.D), WAP (Weeks after planting)
Effect of Fish Pond Effluent and Poultry Manure on Leaf Area.
The results of the effect of fish pond effluent and poultry droppings on leaf area are shown on table 3. At 4 WAP, leaf area ranged
from 136.70 at the control to 367.60 at PED100 treated plot. At 6WAP, value ranged from 137.20 at the control to 373.20 at the
INTERNATIONAL JOURNAL OF LATEST TECHNOLOGY IN ENGINEERING,
MANAGEMENT & APPLIED SCIENCE (IJLTEMAS)
ISSN 2278-2540 | DOI: 10.51583/IJLTEMAS | Volume XIII, Issue XII, December 2024
www.ijltemas.in Page 38
plot treated with PED100 and 8WAP, it ranged from 134.40 at the control to 381.20 at plot treated with PED100. The highest
mean value for leaf area was recorded at PED100 treated plot.
Table 3: Effect of Fish Pond Effluent and Poultry Manure on Leaf Area.
4WAP(cm
2
)
6WAP(cm
2
)
8WAP(cm
2
)
193.60g
195.20g
196.80f
199.20f
202.30f
204.00e
200.20f
205.50ef
207.20e
203.00f
207.20e
208.60e
214.60e
217.60d
219.90d
216.50de
218.70d
223.70d
219.10d
221.40d
224.80d
226.70c
232.10c
234.70c
227.30c
234.80bc
236.60c
229.10bc
232.90c
236.40c
232.10b
238.8b
243.80b
367.60a
373.20a
381.20a
136.70h
137.20h
134.40g
4.50
4.81
6.50
Means followed by the same letter(s) in the same column are not significantly different from one another at 5% level of
probability using least significant different (L.S.D), WAP (Weeks after planting)
Effect of Fish Pond Effluent and Poultry Droppings on Number of Nodes
The result of the effect of fish pond effluent and poultry droppings on number of node is shown on table 5. Number of nodes at
6WAP ranged from 6.89 to 13.05 at PED100 treated plot and at 8WAP, it ranged from 8.95 at the PDA treated plot to 16.75 at the
PED100 treated plot. This value was significantly higher than the other treatment plots as shown on the table while the least
number of nodes were obtained from the Control plot.
Table 4: Effect of Fish Pond Effluent and Poultry Manure on Number of Nodes
Treatment
6WAP
8 WAP
PDA
8.03f
8.95g
PDB
9.97de
11.69e
PDC
9.66e
11.26ef
PDD
10.09cde
14.53cd
PFA50
10.75cde
14.14d
PFB50
11.44bcd
13.50d
PFC50
11.46bc
14.42cd
PFD50
12.28ab
13.50d
PEA100
12.65ab
13.64d
PEB100
12.96a
15.97ab
PEC100
12.32ab
15.33bc
PED100
13.05a
16.75a
CONTROL
6.89f
10.18f
L.S.D P<0.05
1.47
1.13
INTERNATIONAL JOURNAL OF LATEST TECHNOLOGY IN ENGINEERING,
MANAGEMENT & APPLIED SCIENCE (IJLTEMAS)
ISSN 2278-2540 | DOI: 10.51583/IJLTEMAS | Volume XIII, Issue XII, December 2024
www.ijltemas.in Page 39
Means followed by the same letter(s) in the same column are not significantly different from one another at 5% level of
probability using least significant different (L.S.D), WAP (Weeks after planting)
Effects of Pond Effluent and Poultry Manure on Diameter of Cob
The result of the mean value for diameter of cob is shown in Figure 1. The highest mean value is recorded in soils treated with
PED100 with a mean value of 5.16 while the least is recorded in the Control plot.
Figure1 Effect of Fish Pond Effluent and Poultry Manure on Diameter of Cob
Effect of Fish Pond Effluent and Poultry Droppings on Fresh Yield
The effect of fish pond effluent and poultry droppings on fresh yield is presented on fig 2 below. The fresh yield of maize
recorded the highest value at the plot treated with PED100 with a mean value of 0.34 and the least mean value at the Control with
a mean value of 0.18.
Figure 2: Effect of Fish Pond Effluent and Poultry Manure on Fresh Yield
Effect of Fish Pond Effluent and Poultry Manure on Length of Cob
The effect of fish pond effluent and poultry droppings on length of cob is presented on fig 3 below. Length of cob had a
significant difference in soils treated with PED100 with a mean value of 17.39 when compared to other treatments. The least
value for length of cob was recorded at the Control plot
Figure 3: Effect of fish pond effluent and poultry droppings on length of cob
INTERNATIONAL JOURNAL OF LATEST TECHNOLOGY IN ENGINEERING,
MANAGEMENT & APPLIED SCIENCE (IJLTEMAS)
ISSN 2278-2540 | DOI: 10.51583/IJLTEMAS | Volume XIII, Issue XII, December 2024
www.ijltemas.in Page 40
Effect of Fish Pond Effluent and Poultry Manure on Weight of 1000 Kernel
The effect of fish pond effluent and poultry droppings on weight of 1000 kernel is presented on fig 4. The highest 1000 kernel
weight was obtained from the treatment with PEC100 with a mean value of 4.77 followed by treatment with PED100 with a mean
value of 4.14 and the least value was recorded with soils treated with PDA with a value of 0.06.
Figure 4: Effect of fish pond effluent and poultry droppings on weight of 1000 kernel
IV. Discussion
Generally, soils treated with poultry manure alone and poultry manure and fish pond effluent combined had a higher plant height
compared to the control plot which conforms with the findings of (Nsoanya, 2019) where the plant irrigated with fish water
effluent showed better growth attributes than those irrigated with well water. However, the soils that treated with fish pond
effluent and poultry manure performed better than the control plot which is in line with the results from a similar study by (
Ayeni and Adetunji 2010) where stem, leaf, plant length, and root diameter were higher when irrigated with fish effluent
compared to water from well. Soils treated with fish pond effluent and poultry manure combined recorded higher leaf area when
compared to soils treated with poultry manures alone. This result is agrees with the findings of (Nsoanya 2019) who recorded
higher leaf area values on soils treated with fish effluent. The results from this work revealed higher values for number of nodes
for soils treated with fish pond effluent and poultry manure together than soils treated with poultry manure alone which supports
the findings of (Bame et. al., 2014; Nsoanya, 2019). In a similar study, Adeniyan et. al., 2011 revealed that cob diameter had a
higher value which indicates positive effect of the combined effect of fish pond effluent and poultry manure. The combination of
fish pond effluent and poultry manure gave a higher value for fresh yield when compared to the values from soils treated with
poultry manure alone which is in line with the findings of (Fonseca et.al, 2005) which revealed an increase in the fresh yield
when fish effluent was used for irrigation compared when compared to soils treated with canal water combined with fertilizers.
The least value for length of cob was recorded at the Control plot which is in line with the findings of (Payebo and Ogidi 2020;
Rasool et al., 2023) who fertilized the soil with fish pond effluent and poultry manure respectively. The result of weight of 1000
kernel supports the findings of (Ibeawuchi et. al.,2007 and Enujeke et. al., 2013 ) according to them, fish pond effluent and
poultry manure significantly increased the weight of kernel as compared to the inorganic fertilizers treated soils.
V. Conclusion
The results obtained from the study revealed that, application of fish pond effluent can be used as organic fertilizer and good soil
conditioner to improve nutrient status and thereby enhance mineral nutrition and plant growth. An integration of fish pond
effluent with poultry manure significantly increased plant height, number of leaves and leaf area when compared with the
Control. Fish Pond effluent combined with Poultry manure significantly increased soil chemical properties such as pH, Available
Phosphorus, Total Nitrogen, Organic Carbon and Organic Matter. Therefore an integration of fish pond effluent and poultry
manure is recommended as fertilizers for enhancing plant growth, nutrient status, and soil fertility level.
Reference
1. Adeniyan ON, Ojo AO, Akinbode OA, Adediran J A (2011). Comparative study of different organic manures and NPK
fertilizer for improvement of soil chemical properties and dry matter yield of maize in two different soils. Journal of Soil
Science and Environmental Management 2 (1):9 13
2. Agbogidi M. O., Eruotor P.G., Akparobi S. O. (2007) Effects of Time of Application of Crude Oil to soil on the Growth
of Maize (Zea mays L.) 1(3):116-123 DO1:10.3923/RJET.2007.116.123
3. Ayeni L.G. and Adetunji, M.T. 2010. Integrated application of Poultry manure and mineral fertilizer on soil chemical
properties nutrient uptake, yield and growth of components of maize. Nature and science 8 (1) 60 67
4. Bame IB, Hughes JC, Titshall LW, Buckley CA (2014). The effect of irrigation with anaerobic baffled reactor effluent
on nutrient availability, soil properties and maize growth. Agricultural Water Management 134:50-59. doi:
10.1016/j.agwat.2013.11.011
INTERNATIONAL JOURNAL OF LATEST TECHNOLOGY IN ENGINEERING,
MANAGEMENT & APPLIED SCIENCE (IJLTEMAS)
ISSN 2278-2540 | DOI: 10.51583/IJLTEMAS | Volume XIII, Issue XII, December 2024
www.ijltemas.in Page 41
5. Eleweanya, N.P. Uguru, M.I, Enebong, E. E., Okocha, P. I. 2005. Correlation and path coefficient analysis of grain yield
related characters in maize (Zea mays) under Umudike conditions of South Eastern Nigeria. Agro science Journal of
Tropical Agriculture, Food, Environment and Extension 1: 24 28.
6. Federal Ministry of Agriculture and Rural Development (FMARD), 2011, Agricultural Transformation Agenda: We
Will Grow Nigeria’s Agricultural Sector. Draft, Abuja, Nigeria, Computer Disk, Washington DC
7. Fonseca, A.F, Melfi, AJ and Montes, C.R (2005) Maize growth and changes in soil fertility after irrigation with treated
sewage effluent. I. Plant dry matter yield and soil nitrogen and phosphorus availability. Communications in Soil Science
and Plant Analysis 36(13-14):1965-1981. doi: 10.1081/CSS-200062539
8. Ibeawuchi, I.I.; Opara, F.A; Tom, C.T and Obiefuna, J.C. (2007). Graded replacement of inorganic with organic manure
for sustainable maize production in Owerri Imo State, Nigeria. Life Science Journal 4 (2):82-87 (ISSN:1097-8135).
9. Isitekhale, H. H. E. and Adamu, B. 2016. Effects of Effluents on soil chemical Properties in forest Derived savanna
Transition. IOSR Journal of Environmental science, Toxicology and Food Technology (IOSR JESTFT) Vol 10: issue 6
Ver 11, Pp 30 34.
10. Zieman, D.A; Walsh, W.A., Saphore, and Berneth K.F. 2007. A survey of Water quality characteristics of effluent from
Hawaian Facilities. Journal of the world Aquaculture society 23 (3); 180 191.
11. Titirmare, N., Ranshur, N., Patil, Amrutrao., Patil, S. and Margal, P. (2023). Effect of Inorganic Fertilizers and Organic
Manures on Physical Properties of Soil: A Review. International Journal of Plant and Soil Science. 35. 1015-1023.
10.9734/ijpss/2023/v35i193638.
12. Jote,C.A. (2023) The Impacts of Using Inorganic Chemical Fertilizers on the Environment and Human Health Organic
and Medicinal Chem IJ Volume 13 Issue 3 DOI: 10.19080/OMCIJ.2023.13.555864
13. Halwart, M. and Ajayi, O (2024) Water Management and Productivity in Integrated Agriculture-Aquaculture (Rice-
Fish). Arilinks Systems Fish Innovation Lab’s Farm Diversification Activity and the Food and Agriculture Organization
of the United Nations (FAO)
14. Onuorah, S., Ibe-Gabriel, I. and Okoye. P. (2021). Impact Of Fish Pond Effluent On The Physicochemical
Characterization Of Soil, Growth And Yield Of Maize Crop. International Journal of Advanced Science and
Technology. 2. 221-238.
15. Rasool, A., Ghani, A., Nawaz, R., Ahmad ,S., Shahzad, K., Rebi, A., Ali, B., Zhou, J., Ahmad M.I., Tahir, M.F.,
Alwahibi, M.S., Elshikh, M.S. and Ercisli, S. (2023) Effects of Poultry Manure on the Growth, Physiology, Yield, and
Yield-Related Traits of Maize Varieties. ACS Omega. 2023 Jun 1;8(29):25766-25779. doi: 10.1021/acsomega.3c00880.
PMID: 37521629; PMCID: PMC10373454
16. Okonwu, K and Mensah, S.I (2012) Studies on Soil Amended with Poultry Manure and Its Effects on Yield and Yield
Components of Pumpkin Scientia Africana, Vol. 11 (No.1), June 2012. pp 84-91 ISSN 1118 1931
17. Parwada, C., Mupambwa, H., Mandumbu, R. and Mashingaidze, A. B. (2023). Sustainable soil fertility practices for
smallholder farmers. 10.3389/978-2-8325-2628-6.
18. Shehu, A.M., Bello, T.T. Haruna, Y.R., Abdullahi, R. Ibrahim, A. and Lawal, S.M.(2019) Growth and Yield of
Amaranth (Amaranthus cruentus) as Influenced by Poultry Manure Rates and Variety in Sudan Savanna, Nigeria.
National Innovation And Research Academia International Journal of Agribusiness and Agricultural Science. ISSN:
2713-4670. Volume 6, Issue 1. Pages 01- 07
19. Nsoanya, L. N.(2019) Response of Fish Pond Effluent on Soil Chemical Properties and Growth of Cucumber (Cucumis
sativus) in Igbariam South Eastern, Nigeria. Int.J.Curr.Microbiol.App.Sci (2019) 8(2): 2799-2807
https://doi.org/10.20546/ijcmas.2019.802.329
20. Payebo C.O and Ogidi, I.A (2020) Evaluation of fish pond water on the growth and yield of maize at Wilberforce Island,
Amassoma; African Journal of Crop Science ISSN 2375-1231 Vol. 8 (9), pp. 001-007, DOI: 10.46882/AJCS/1129.
21. Enujeke E.C., Ojeifo I.M, and Nnaji G.U (2013) Residual effects of organic manure and inorganic fertilizer on maize
grain weight and some soil properties in Asaba area of Delta State. International Journal of Advanced Biological
Research 3(3):433-442. Society for Science and Nature, India.
22. Firew A. H., Mulugeta, W. and Abebe G.(2018) Fishpond Wastewater Versus Chemical Fertilizer On Tomato
Productivity In Jimma, Oromia Region, Ethiopia, World Journal of Environmental Biosciences Volume7, Issue 4: 82-89
:ISSN 2277- 8047