Abstract
Experiments were conducted in the growing seasons of 2005 and 2006 at Ibadan, Nigeria, in the degraded tropical rain forest zone to assess the growth and yield of maize with Nitrogen-enriched organic fertilizer made from municipal waste and cow dung (2.5t ha-1 Pacesetter fertilizer + 100kg ha-1 urea)and also with Nitrogen-fortified poultry manure. Their performance was compared with those of inorganic NPK fertilizer and no fertilizer control. Maize growth was significantly (P=0.05) affected by an enrichment of the organic manures. They had plants comparable in height with inorganic fertilizer application. At harvest, plants treated with fortified poultry manure were about 259cm tall while those treated with fortified Pacesetter fertilizer and the plants treated with inorganic fertilizer were about 253cm tall. Average plant leaf areas were similar with the fortified fertilizers and with inorganic fertilization. Length of days taken to achieve 50% tasselling was also reduced with fertilization. Inorganic fertilizer application gave plants that achieved 50% tasselling in 50days while fortified poultry manured - plants took 52days and the fortified Pacesetter fertilizer – treated plants took 53days. Fertilization of maize gave significantly (P=0.05) higher seed yields. Fortified poultry manure gave an average yield of 3.97t ha-1 while fortified Pacesetter fertilizer had an average of 3.78t ha-1.Inorganic fertilizer gave a yield of 3.70t ha-1 while a significantly lower yield of 2.48t ha-1 was given by the unfertilized plants. Maize growth and yield from the enriched organic manures were comparable with inorganic fertilizer, indicating the potentials of the use of fortified organic manures as alternatives to inorganic fertilizers. Poultry manure required lesser N-fortification to give comparable seed yields as cow dung. Although both organic manures increased the soil N and P, poultry manure gave higher values while the soil K, Ca and Mg contents were more increased with the cow dung than poultry manure. Poultry manure, fortified with 100kg Urea can be applied at 2.5t ha-1 to cultivate maize. It gives a comparable yield as inorganic fertilizer and increases the soil N and P. Keywords: Maize, organic manures, soil nutrients. AJFAND Vol. 9 (1) 2009: pp. 581-592
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Claims 12
Claim · model-written summary
Maize growth was significantly affected by enrichment of the organic manures.
Zea maysNot reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize growth, yield and soil nutrient changes with N-enriched organic fertilizers”
e0“Experiments were conducted in the growing seasons of 2005 and 2006 at Ibadan, Nigeria, in the degraded tropical rain forest zone”
e1“Maize growth was significantly (P=0.05) affected by an enrichment of the organic manures”
Claim · model-written summary
Plants treated with fortified poultry manure were comparable in height with inorganic fertilizer application.
- Treatment
- fortified poultry manuree3
- Outcome
- heighte2
- Direction
- comparablee2
- Value
- 259cme3
- Comparator
- inorganic fertilizere2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize growth, yield and soil nutrient changes with N-enriched organic fertilizers”
e2“They had plants comparable in height with inorganic fertilizer application”
e3“plants treated with fortified poultry manure were about 259cm tall”
Claim · model-written summary
Fertilization reduced the number of days to 50% tasselling.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize growth, yield and soil nutrient changes with N-enriched organic fertilizers”
e4“Length of days taken to achieve 50% tasselling was also reduced with fertilization”
Claim · model-written summary
Fortified poultry manure gave a higher average seed yield of 3.97 t/ha than inorganic fertilizer.
- Treatment
- Fortified poultry manuree6
- Outcome
- average yielde6
- Direction
- highere5
- Value
- 3.97t ha-1e6
- Comparator
- Inorganic fertilizere7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize growth, yield and soil nutrient changes with N-enriched organic fertilizers”
e5“Fertilization of maize gave significantly (P=0.05) higher seed yields”
e6“Fortified poultry manure gave an average yield of 3.97t ha-1”
e7“Inorganic fertilizer gave a yield of 3.70t ha-1”
Claim · model-written summary
Fortified Pacesetter fertilizer gave an average seed yield of 3.78 t/ha.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize growth, yield and soil nutrient changes with N-enriched organic fertilizers”
e5“Fertilization of maize gave significantly (P=0.05) higher seed yields”
e6“fortified Pacesetter fertilizer had an average of 3.78t ha-1”
Claim · model-written summary
Inorganic fertilizer gave a seed yield of 3.70 t/ha.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize growth, yield and soil nutrient changes with N-enriched organic fertilizers”
e7“Inorganic fertilizer gave a yield of 3.70t ha-1 while a significantly lower yield of 2.48t ha-1 was given by the unfertilized plants”
Claim · model-written summary
Unfertilized maize plants gave a significantly lower seed yield of 2.48 t/ha than inorganic fertilizer.
- Treatment
- unfertilized plantse7
- Outcome
- yielde7
- Direction
- lowere7
- Value
- 2.48t ha-1e7
- Comparator
- Inorganic fertilizere7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize growth, yield and soil nutrient changes with N-enriched organic fertilizers”
e7“Inorganic fertilizer gave a yield of 3.70t ha-1 while a significantly lower yield of 2.48t ha-1 was given by the unfertilized plants”
Claim · model-written summary
Maize growth and yield from enriched organic manures were comparable with inorganic fertilizer.
- Treatment
- enriched organic manurese1
- Outcome
- Maize growth and yielde1
- Direction
- comparablee1
- Comparator
- inorganic fertilizere1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize growth, yield and soil nutrient changes with N-enriched organic fertilizers”
e1“Maize growth and yield from the enriched organic manures were comparable with inorganic fertilizer”
Claim · model-written summary
Both organic manures increased soil N and P.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize growth, yield and soil nutrient changes with N-enriched organic fertilizers”
e1“Although both organic manures increased the soil N and P, poultry manure gave higher values”
Claim · model-written summary
Poultry manure gave higher soil N and P values than cow dung.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize growth, yield and soil nutrient changes with N-enriched organic fertilizers”
e1“Although both organic manures increased the soil N and P, poultry manure gave higher values”
e2“the soil K, Ca and Mg contents were more increased with the cow dung than poultry manure”
Claim · model-written summary
Cow dung increased soil K, Ca and Mg contents more than poultry manure.
- Treatment
- cow dunge1
- Outcome
- soil K, Ca and Mg contentse1
- Direction
- more increasede1
- Comparator
- poultry manuree1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize growth, yield and soil nutrient changes with N-enriched organic fertilizers”
e1“the soil K, Ca and Mg contents were more increased with the cow dung than poultry manure”
Claim · model-written summary
Fortified poultry manure at 2.5 t/ha is recommended to cultivate maize.
- Treatment
- Poultry manure, fortified with 100kg Ureae1
- Outcome
- applied at 2.5t ha-1 to cultivate maizee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize growth, yield and soil nutrient changes with N-enriched organic fertilizers”
e1“Poultry manure, fortified with 100kg Urea can be applied at 2.5t ha-1 to cultivate maize”
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