Abstract
The objective of this research was to evaluate the effects of chicken manure and chemical fertilizer management on cassava growth and yield. The experiment was carried out in randomized complete block design with three replications from June 2009 to June 2010, using HB 80 cassava cultivar grown on Map Bon, a coarse-loamy variant, at Khao Hin Son Research Station, Phanom Sarakham District, Chachoengsao Province, Thailand. There were 10 treatments: T1, no fertilizer application (control); T2, application of 15N–15P2O5–15K2O chemical fertilizer at the rate of 312.5 kg ha−1 at 1 month after planting; T3, application 15N–5P2O5–20K2O chemical fertilizer at the rate of 312.5 kg ha−1 at 1 month after planting; T4, application of chicken manure (CM) at the rate of 6.25 t ha−1 before planting; T5, application of CM at the rate of 3.125 t ha−1 before planting + 15N–15P2O5–15K2O chemical fertilizer at the rate of 156.25 kg ha−1 at 1 month after planting; T6, application of CM at the rate of 3.125 t ha−1 before planting + 15N–5P2O5–20K2O chemical fertilizer at the rate of 156.25 kg ha−1 at 1 month after planting; T7, application of CM at the rate of 6.25 t ha−1 before planting + 15N–15P2O5–15K2O chemical fertilizer at the rate of 156.25 kg ha−1 at 1 month after planting; T8, application of CM at the rate of 6.25 t ha−1 before planting + 15N–5P2O5–20K2O chemical fertilizer at the rate of 156.25 kg ha−1 at 1 month after planting; T9, application of 46N–0P2O5–0K2O chemical fertilizer at the rate of 156.25 kg ha−1 at 1 month after planting + 15N–15P2O5–15K2O chemical fertilizer at the rate of 156.25 kg ha−1 at 2 month after planting; T10, application of 46N–0P2O5–0K2O chemical fertilizer at the rate of 312.5 kg ha−1 at 1 month after planting + 15N–5P2O5–20K2O chemical fertilizer at the rate of 156.25 kg ha−1 at 2 month after planting. It was found that the treatments with various rates of CM or chemical fertilizer that contained N, P, and K were not different in fresh root yield but treatments with CM and chemical fertilizer tended to give greater fresh root yield or have greater effect on it, and plant height was not affected. The treatments with 3.125 kg ha−1 of CM and 156.25 kg ha−1 of 15–15–15 gave significantly greater fresh root yield of cassava (52%). All fertilization treatments were not different in fresh stem weight but treatments with 3.125 kg ha−1 of CM and 156.25 kg ha−1 of 15–15–15 tended to give significantly greater fresh stem weight of cassava (62%). All fertilization treatments were not different in root starch percentage and root number as compared with control.
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Claims 7
Claim · model-written summary
Fertilizer treatments did not differ in fresh root yield.
- Taxon
- cassava
Manihot esculentat0 - Treatment
- CM or chemical fertilizere0
- Outcome
- fresh root yielde0
- Direction
- not differente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the treatments with various rates of CM or chemical fertilizer that contained N, P, and K were not different in fresh root yield”
t0“Cassava”
Claim · model-written summary
Combined manure and fertilizer tended toward greater fresh root yield.
- Taxon
- cassavaManihot esculentat0
- Treatment
- CM and chemical fertilizere0
- Outcome
- fresh root yielde0
- Direction
- greatere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“treatments with CM and chemical fertilizer tended to give greater fresh root yield”
t0“Cassava”
Claim · model-written summary
Plant height was unaffected by fertilizer treatments.
- Taxon
- cassavaManihot esculentat0
- Treatment
- Chicken Manure and Chemical Fertilizert0
- Outcome
- plant heighte0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant height was not affected”
t0“Chicken Manure and Chemical Fertilizer Management on Yield of Cassava”
Claim · model-written summary
A manure and 15–15–15 fertilizer combination gave 52% greater fresh root yield.
- Taxon
- cassavaManihot esculentae0
- Treatment
- 3.125 kg ha−1 of CM and 156.25 kg ha−1 of 15–15–15e0
- Outcome
- fresh root yielde0
- Direction
- greatere0
- Value
- 52%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The treatments with 3.125 kg ha−1 of CM and 156.25 kg ha−1 of 15–15–15 gave significantly greater fresh root yield of cassava (52%).”
Claim · model-written summary
Fertilization treatments did not differ in fresh stem weight.
- Taxon
- cassavaManihot esculentat0
- Treatment
- fertilization treatmentse0
- Outcome
- fresh stem weighte0
- Direction
- not differente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All fertilization treatments were not different in fresh stem weight”
t0“Cassava”
Claim · model-written summary
The manure and 15–15–15 combination tended toward 62% greater fresh stem weight.
- Taxon
- cassavaManihot esculentae0
- Treatment
- 3.125 kg ha−1 of CM and 156.25 kg ha−1 of 15–15–15e0
- Outcome
- fresh stem weighte0
- Direction
- greatere0
- Value
- 62%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“treatments with 3.125 kg ha−1 of CM and 156.25 kg ha−1 of 15–15–15 tended to give significantly greater fresh stem weight of cassava (62%).”
Claim · model-written summary
Fertilization did not differ from control in root starch percentage or root number.
- Taxon
- cassavaManihot esculentat0
- Treatment
- fertilization treatmentse0
- Outcome
- root starch percentage and root numbere0
- Direction
- not differente0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All fertilization treatments were not different in root starch percentage and root number as compared with control.”
t0“Cassava”
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