Abstract
In order to investigate the interactive effect of humic acid and different levels of potassium fertilizer on physiological indices of cowpea, a split plot experiment in the form of randomized complete blocks design with four replications was carried out in Shahid Salemi Field located in Ahvaz in 2011-20121. The studied factors include three levels of potassium fertilizer (0, 200, and 300 kg/h) and three levels of humic acid (0, 50, 100ppm). Traits such as leaf area index (LAI), total dry weight (TDW), crop growth rate (CGR), net assimilation rate (NAR) were measured. Changes trend of dry matter significantly increased at density of 100 ppm humic acid and 300 kg/ha potassium. Leaf area index increased at density of 100 ppm humic acid and 300 kg/ha potassium. NAR index, like other growth indices, responded to consumption of humic acid and potassium fertilizer.
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Claims 3
Claim · model-written summary
Cowpea dry matter increased significantly at 100 ppm humic acid and 300 kg/ha potassium.
- Taxon
- cowpea
Vigna unguiculatae1 - Treatment
- 100 ppm humic acid and 300 kg/ha potassiume0
- Outcome
- dry mattere0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Changes trend of dry matter significantly increased at density of 100 ppm humic acid and 300 kg/ha potassium”
e1“physiological indices of cowpea”
Claim · model-written summary
Cowpea leaf area index increased at 100 ppm humic acid and 300 kg/ha potassium.
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- 100 ppm humic acid and 300 kg/ha potassiume0
- Outcome
- Leaf area indexe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf area index increased at density of 100 ppm humic acid and 300 kg/ha potassium”
e1“physiological indices of cowpea”
Claim · model-written summary
Cowpea net assimilation rate responded to humic acid and potassium fertilizer, without a stated direction.
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- humic acid and potassium fertilizere0
- Outcome
- NAR indexe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NAR index, like other growth indices, responded to consumption of humic acid and potassium fertilizer”
e1“physiological indices of cowpea”
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See all 26 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.