Abstract
Sorghum is capable of sustaining under high temperature and minimal soil moisture. Hydrocyanic acid toxin production is a serious problem associated with sorghum forage in dry areas and could be lethal to animals if ingested in higher quantities. Hydrocyanic acid (HCN) contents in forage sorghum were studied through field experiment executed at National Agricultural Research Centre, Islamabad during 2008 and 2009. Three sorghum cultivars JS-2002, Chakwal sorghum and Local sorghum were sown in a randomized complete block design in split-split plot arrangement with three seeding rates (75, 100 & 125 kg ha-1) and three nitrogen levels (0, 60 & 120 kg N ha-1). Increased nitrogen application progressively increased HCN production irrespective of cultivar and growth stage of the crop. Application of 120 kg N ha-1 recorded about 64% higher HCN than control treatment indicating the risk of higher doses of nitrogen fertilizer to sorghum forage in dry areas. Seeding rates had variable influence on HCN production. Cultivar JS-2002 produced 23, 36 and 57% less HCN contents compared to local sorghum at pre-booting, booting and 50% heading stage, respectively. On the basis of two year‘s field study, it may be concluded that approved cultivar JS-2002 produced less HCN sown with higher seed rate and applied low doses of N fertilizer under dryland farming conditions of Pothwar is recommended for general cultivation.
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Claims 7
Claim · model-written summary
More nitrogen progressively increased sorghum HCN production across cultivars and stages.
SorghumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased nitrogen application progressively increased HCN production irrespective of cultivar and growth stage of the crop”
t0“Sorghum Cultivars”
Claim · model-written summary
At 120 kg N ha-1, sorghum HCN was about 64% higher than control.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 120 kg N ha-1 recorded about 64% higher HCN than control treatment”
t0“Sorghum Cultivars”
Claim · model-written summary
Seeding rate had a variable effect on sorghum HCN production.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seeding rates had variable influence on HCN production”
t0“Sorghum Cultivars”
Claim · model-written summary
JS-2002 had 23 less HCN than local sorghum at pre-booting.
- Material
- JS-2002e0
- Organ / stage
- pre-bootinge0
- Outcome
- HCN contentse0
- Direction
- lesse0
- Value
- 23e0
- Comparator
- local sorghume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cultivar JS-2002 produced 23, 36 and 57% less HCN contents compared to local sorghum at pre-booting, booting and 50% heading stage, respectively”
Claim · model-written summary
JS-2002 had 36 less HCN than local sorghum at booting.
- Material
- JS-2002e0
- Organ / stage
- bootinge0
- Outcome
- HCN contentse0
- Direction
- lesse0
- Value
- 36e0
- Comparator
- local sorghume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cultivar JS-2002 produced 23, 36 and 57% less HCN contents compared to local sorghum at pre-booting, booting and 50% heading stage, respectively”
Claim · model-written summary
JS-2002 had 57% less HCN than local sorghum at 50% heading stage.
- Material
- JS-2002e0
- Organ / stage
- 50% heading stagee0
- Outcome
- HCN contentse0
- Direction
- lesse0
- Value
- 57%e0
- Comparator
- local sorghume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cultivar JS-2002 produced 23, 36 and 57% less HCN contents compared to local sorghum at pre-booting, booting and 50% heading stage, respectively”
Claim · model-written summary
The authors recommend JS-2002 with high seed rate and low N for dryland cultivation in Pothwar.
- Material
- JS-2002e0
- Treatment
- higher seed rate and applied low doses of N fertilizere0
- Outcome
- recommended for general cultivatione0
- Setting
- Pothware0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“approved cultivar JS-2002 produced less HCN sown with higher seed rate and applied low doses of N fertilizer under dryland farming conditions of Pothwar is recommended for general cultivation”
t0“Sorghum Cultivars”
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