Claim · model-written summary
Addition of 50 and 100 mg kg−1 HA significantly increased shoot dry weight of maize by 20 and 23% relative to control.
- Organ / stage
- shoote1
- Treatment
- addition of 50 and 100 mg kg−1 HAe1
- Outcome
- dry weighte1
- Direction
- increasee1
- Value
- 20 and 23%e1
- Comparator
- controle1
Zea maysNot reportedMaterialGeneCompoundInteractorInteractor roleSecond interactorSecond interactor roleSettingQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“MAIZE PLANTS”
e1“The addition of 50 and 100 mg kg−1 HA caused significant increase of 20 and 23% in shoot and 39 and 32% in root dry weight of maize plants as compared to control”
Title
EFFECT OF DIFFERENT LEVELS OF LIGNITIC COAL DERIVED HUMIC ACID ON GROWTH OF MAIZE PLANTS
M. Sharif; Riaz A. Khattak; M. S. Sarir Communications in Soil Science and Plant Analysis 2002. doi:10.1081/css-120015906
Other claims from this paper (14)
- Intervention effect Addition of 50 and 100 mg kg−1 HA significantly increased root dry weight of maize by 39 and 32% relative to control.
- Intervention effect HA above 50 and 100 mg kg−1 had no significant effect on maize yield.
- Intervention effect HA treatments improved soil organic matter content slightly, by 7 to 14%.
- Intervention effect HA treatments decreased soil pH by 0.2 to 0.3 unit.
- Intervention effect Addition of HA significantly increased soil N concentration and plant N accumulation over control.
- Intervention effect Different levels of HA applied showed no significant differences in soil N concentration and plant N accumulation.
- Intervention effect Addition of 200 mg kg−1 HA significantly improved soil P concentration.
- Intervention effect Plant P accumulation of maize was not significantly affected by different levels of HA.
- Intervention effect Application of HA nonsignificantly increased soil micronutrient concentrations and their accumulation by maize.
- Intervention effect Addition of 0.5 and 1.0 kg ha−1 HA promoted soil CO2 evolution in a laboratory incubation.
- Intervention effect Addition of 0.5 and 1.0 kg ha−1 HA increased soil bacterial population by 355% to 476%.
- Intervention effect Addition of 0.5 and 1.0 kg ha−1 HA increased soil fungi by 610 to 716%.
- Intervention effect Addition of 0.5 and 1.0 kg ha−1 HA increased cation exchange capacity of the soil by 13.8 to 28.9%.
- Association Increased growth of maize due to HA addition may be associated with the improved biochemical environment of the soil.