Abstract
An experiment was conducted for two successive years (2000-2001) in the Demonstration Farm of the Faculty of Agriculture, University of Khartoum in Shambat to investigate the response of two forage sorghum cultivars to different rates of chicken manure in two different seasons (summer and winter). The treatments consisted of four chicken manure levels (0, 2.5, 5.5 and 7.0 tons/ ha.), two cultivars of forage sorghum (Abu Sabein and Pioneer) and two sowing dates (winter and summer). Treatments were arranged in a split-split plot design with four replications. The parameters measured included fresh and dry matter yields and proximate analysis to determine the nutritive value and the HCN concentration of the forage. Results showed that chicken manure rates had a significant effect on yield and nutritive value of the forage produced during both seasons throughout the experimental period. The maximum forage fresh yield of 33.21 tons/ha was recorded for the highest rate of chicken manure applied (7.5 tons/ha) compared to 17.71 tons/ha for the control during the first year. On the other hand maximum dry forage yield of 16 tons/ha was recorded for the same treatment compared to 11.42 tons/ha for the control during the same period. In both years no significant effects of cultivars on forage yield, except for dry matter production in the second year. Summer sowing significantly outyieded winter sowing throughout the experimental period. Chicken manure application significantly improved forage quality in terms of crude protein and crude fiber, with highest protein and lowest fiber recorded for the highest dose of chicken manure applied compared to the control. Summer planting resulted in a significantly higher P and Ca compared to winter planting. Pioneer significantly exceeded Abu Sabein in Mg content through out the experimental period. Prussic acid contents were significantly increased by chicken manure treatment. Abu Sabein (Sorghum bicolor (L.) Moench) had greater contents of prussic acid than Pioneer cultivar and all prussic acid content of Pioneer cultivar did not reach the toxic level (>204 ppm) during the two seasons.
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Claims 12
Claim · model-written summary
Chicken manure rates significantly affected forage yield and nutritive value in both seasons.
Not reportedDirection
Verbatim
t0“forage sorghum”
e0“chicken manure rates had a significant effect on yield and nutritive value of the forage produced during both seasons”
Claim · model-written summary
The highest manure rate gave a maximum fresh forage yield of 33.21 tons/ha versus 17.71 tons/ha for the control in the first year.
Verbatim
t0“forage sorghum”
e0“maximum forage fresh yield of 33.21 tons/ha was recorded for the highest rate of chicken manure applied (7.5 tons/ha) compared to 17.71 tons/ha for the control during the first year”
Claim · model-written summary
The highest manure rate gave a maximum dry forage yield of 16 tons/ha versus 11.42 tons/ha for the control.
- Taxon
- forage sorghumt0
- Outcome
- dry forage yielde0
- Direction
- maximume0
- Value
- 16 tons/hae0
- Qualifier
- 11.42 tons/hae0
- Comparator
- controle0
Not reportedTreatment
Verbatim
t0“forage sorghum”
e0“maximum dry forage yield of 16 tons/ha was recorded for the same treatment compared to 11.42 tons/ha for the control during the same period”
Claim · model-written summary
Cultivars generally did not differ significantly in forage yield except second-year dry matter production.
- Taxon
- forage sorghumt0
- Material
- cultivarse0
- Outcome
- forage yielde0
- Qualifier
- except for dry matter production in the second yeare0
Not reportedDirection
Verbatim
t0“forage sorghum”
e0“In both years no significant effects of cultivars on forage yield, except for dry matter production in the second year”
Claim · model-written summary
Summer sowing outyielded winter sowing significantly.
Verbatim
t0“forage sorghum”
e0“Summer sowing significantly outyieded winter sowing throughout the experimental period”
Claim · model-written summary
Chicken manure improved crude protein content, highest at the highest dose.
Verbatim
t0“forage sorghum”
e0“Chicken manure application significantly improved forage quality in terms of crude protein and crude fiber, with highest protein and lowest fiber recorded for the highest dose of chicken manure applied compared to the control”
Claim · model-written summary
Chicken manure lowered crude fiber, lowest at the highest dose.
Verbatim
t0“forage sorghum”
e0“Chicken manure application significantly improved forage quality in terms of crude protein and crude fiber, with highest protein and lowest fiber recorded for the highest dose of chicken manure applied compared to the control”
Claim · model-written summary
Summer planting yielded higher P and Ca than winter planting.
Verbatim
t0“forage sorghum”
e0“Summer planting resulted in a significantly higher P and Ca compared to winter planting”
Claim · model-written summary
Pioneer exceeded Abu Sabein in Mg content.
Verbatim
t0“forage sorghum”
e0“Pioneer significantly exceeded Abu Sabein in Mg content through out the experimental period”
Claim · model-written summary
Chicken manure increased prussic acid content.
- Taxon
- forage sorghumt0
- Treatment
- chicken manure treatmente0
- Outcome
- Prussic acid contentse0
- Direction
- increasede0
Not reportedComparator
Verbatim
t0“forage sorghum”
e0“Prussic acid contents were significantly increased by chicken manure treatment”
Claim · model-written summary
Abu Sabein had more prussic acid than Pioneer.
- Taxon
- Sorghum bicolor (L.) Moench
Sorghum bicolore0 - Material
- Abu Sabeine0
- Outcome
- contents of prussic acide0
- Direction
- greatere0
- Comparator
- Pioneer cultivare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Abu Sabein (Sorghum bicolor (L.) Moench) had greater contents of prussic acid than Pioneer cultivar”
Claim · model-written summary
Pioneer prussic acid remained below the toxic threshold in both seasons.
Verbatim
t0“forage sorghum”
e0“all prussic acid content of Pioneer cultivar did not reach the toxic level (>204 ppm) during the two seasons”
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