Abstract
The response of cocoyam (Colocasia esuclenta (L.) Schott) to various rates of poultry manure (PM) and potassium(K) fertilizer was studied under field conditions in 2006 and 2007 growing seasons at Uyo, a humid forest agroecology of south eastern Nigeria. Treatment combinations comprising of four rates each of PM (0, 5, 10 and 15t/ha) and K (0, 40, 80 and 120 kg K/ha) were factorized and fitted into a randomized complete block design with three replicates. Application of PM and K at the highest rates produced significantly taller plants with higher leaf area index, shoot dry matter, corms and cormels number, compared with other treatments in both years. Weight of corms and cormels and total yield (t/ha) were however, optimized at 10t/ha and 80 kg K/ha rate. Averaged over the two years, increases in PM and K rates from zero to 15t/ha and 120 kg K/ha, increased the shoot dry matter by 51% and 29%, and the number of corms and cormels by 40% and 34%, respectively. Weight of corms and cormels and total yield obtained in the two years at 10t/ha and 15t/ha PM, and 80 kg K/ha and 120 kg K/ha were statistically similar except in 2007 where the corms and cormels weight peaked at 15t/ha PM rate. Poultry manure at 15t/ha in combination with either 80 kg K/ha or 120 kg K/ha out-yielded other treatments in terms of corms and cormels weight and total yield in the two years of trial. Keywords- Cocoyam, cormels, corms, potassium fertilizer, poultry manure, rates, shoot dry matter, yield.
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Claims 10
Claim · model-written summary
The highest poultry manure and potassium rates produced taller cocoyam plants.
- Taxon
- cocoyam
_Colocasia_esculenta_-_Les_Martels%2C_Giroussens_Tarn.jpg?width=60)
Colocasia esculentae1 - Treatment
- PM and K at the highest ratese0
- Outcome
- taller plantse0
- Direction
- tallere0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Colocasia_esculenta_-_Les_Martels%2C_Giroussens_Tarn.jpg?width=500)
Verbatim
e0“Application of PM and K at the highest rates produced significantly taller plants with higher leaf area index, shoot dry matter, corms and cormels number, compared with other treatments in both years.”
e1“The response of cocoyam”
Claim · model-written summary
The highest manure and potassium rates increased leaf area index, shoot dry matter, and corm and cormel number compared with other treatments.
- Taxon
- cocoyamColocasia esculentae1
- Treatment
- PM and K at the highest ratese0
- Outcome
- leaf area index, shoot dry matter, corms and cormels numbere0
- Direction
- highere0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of PM and K at the highest rates produced significantly taller plants with higher leaf area index, shoot dry matter, corms and cormels number, compared with other treatments in both years.”
e1“The response of cocoyam”
Claim · model-written summary
Corm and cormel weight and total yield were optimized at 10t/ha manure and 80 kg K/ha.
- Taxon
- cocoyamColocasia esculentae1
- Treatment
- 10t/ha and 80 kg K/hae0
- Outcome
- Weight of corms and cormels and total yielde0
- Direction
- optimizede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Weight of corms and cormels and total yield (t/ha) were however, optimized at 10t/ha and 80 kg K/ha rate.”
e1“The response of cocoyam”
Claim · model-written summary
Increasing poultry manure from zero to 15t/ha increased shoot dry matter by 51%.
- Taxon
- cocoyamColocasia esculentae1
- Treatment
- PMe0
- Outcome
- shoot dry mattere0
- Direction
- increasede0
- Value
- 51%e0
- Qualifier
- 15t/hae0
- Comparator
- zeroe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increases in PM and K rates from zero to 15t/ha and 120 kg K/ha, increased the shoot dry matter by 51% and 29%”
e1“The response of cocoyam”
Claim · model-written summary
Increasing potassium to 120 kg K/ha increased shoot dry matter by 29%.
- Taxon
- cocoyamColocasia esculentae1
- Treatment
- Ke0
- Outcome
- shoot dry mattere0
- Direction
- increasede0
- Value
- 29%e0
- Qualifier
- 120 kg K/hae0
- Comparator
- zeroe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increases in PM and K rates from zero to 15t/ha and 120 kg K/ha, increased the shoot dry matter by 51% and 29%”
e1“The response of cocoyam”
Claim · model-written summary
Increasing manure to 15t/ha increased corm and cormel number by 40%.
- Taxon
- cocoyamColocasia esculentae1
- Treatment
- PMe0
- Outcome
- number of corms and cormelse0
- Direction
- increasede0
- Value
- 40%e0
- Qualifier
- 15t/hae0
- Comparator
- zeroe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increases in PM and K rates from zero to 15t/ha and 120 kg K/ha, increased the shoot dry matter by 51% and 29%, and the number of corms and cormels by 40% and 34%, respectively.”
e1“The response of cocoyam”
Claim · model-written summary
Increasing potassium to 120 kg K/ha increased corm and cormel number by 34%.
- Taxon
- cocoyamColocasia esculentae1
- Treatment
- Ke0
- Outcome
- number of corms and cormelse0
- Direction
- increasede0
- Value
- 34%e0
- Qualifier
- 120 kg K/hae0
- Comparator
- zeroe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increases in PM and K rates from zero to 15t/ha and 120 kg K/ha, increased the shoot dry matter by 51% and 29%, and the number of corms and cormels by 40% and 34%, respectively.”
e1“The response of cocoyam”
Claim · model-written summary
Corm and cormel weight and total yield were statistically similar at the two higher manure and potassium rates, apart from corm and cormel weight in 2007.
- Taxon
- cocoyamColocasia esculentae1
- Treatment
- 10t/ha and 15t/ha PMe0
- Outcome
- Weight of corms and cormels and total yielde0
- Direction
- statistically similare0
- Qualifier
- except in 2007e0
- Comparator
- 80 kg K/ha and 120 kg K/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Weight of corms and cormels and total yield obtained in the two years at 10t/ha and 15t/ha PM, and 80 kg K/ha and 120 kg K/ha were statistically similar except in 2007 where the corms and cormels weight peaked at 15t/ha PM rate.”
e1“The response of cocoyam”
Claim · model-written summary
Corm and cormel weight peaked at 15t/ha poultry manure in 2007.
- Taxon
- cocoyamColocasia esculentae1
- Treatment
- 15t/ha PMe0
- Outcome
- corms and cormels weighte0
- Direction
- peakede0
- Qualifier
- 2007e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in 2007 where the corms and cormels weight peaked at 15t/ha PM rate.”
e1“The response of cocoyam”
Claim · model-written summary
15t/ha manure combined with either 80 or 120 kg K/ha out-yielded other treatments in corm and cormel weight and total yield.
- Taxon
- cocoyamColocasia esculentae1
- Treatment
- Poultry manure at 15t/ha in combination with either 80 kg K/ha or 120 kg K/hae0
- Outcome
- corms and cormels weight and total yielde0
- Direction
- out-yieldede0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Poultry manure at 15t/ha in combination with either 80 kg K/ha or 120 kg K/ha out-yielded other treatments in terms of corms and cormels weight and total yield in the two years of trial.”
e1“The response of cocoyam”
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