Abstract
The research was carried out in the ecological conditions of the Ranya region of Sulaymaniyah province, Iraq in the summer growing season of 2020. The goal of the study was to investigate the impact of humic acid on the growth and yield of corn. The trial included two commercial cultivars (DKC6050 and DKC6664) and soil application of four rates of humic acid (HA1: 0 kg/ha, HA2: 60 kg/ha, HA3: 120 kg/ha and HA4: 180 kg/ha). The experiment was conducted according to the split-plot experimental design in randomized blocks. In the study, a trial pattern was designed so that varieties were placed in the main plots, and doses of humic acid were placed in the subplots for a more precise investigation of their effects on the cultivars. In the experiment, the characteristics of growth, yield, and yield components were examined. According to the results, it was determined that applying humic acid positively affected all vegetative and yield parameters except for the germination time, cob diameter, protein ratio, and oil ratio. As the result of the interaction between the cultivars and the humic acid doses, significant results were obtained for seed yield, 100 seeds weight, yield per plant, cob diameter, harvest index, leaf area index, stem diameter, and silk appearance time. The highest grain yield was obtained from the DKC6050 variety (9844.8 kg/ha). Responses of cultivars to humic acid were the same and therefore no appreciable differences were observed between cultivars for comparison. However, it has been determined that the DKC6050 variety is a promising variety in terms of many characteristics and can be cultivated in the ecology where the research is carried out.
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Claims 8
Claim · model-written summary
Applying humic acid positively affected vegetative and yield parameters of corn
- Taxon
- corn
Zea mays subsp. mayse1 - Treatment
- applying humic acide2
- Outcome
- vegetative and yield parameterse2
- Direction
- positively affectede2
- Setting
- Ranya region of Sulaymaniyah province, Iraqe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The research was carried out in the ecological conditions of the Ranya region of Sulaymaniyah province, Iraq in the summer growing season of 2020”
e1“investigate the impact of humic acid on the growth and yield of corn”
e2“applying humic acid positively affected all vegetative and yield parameters except for the germination time, cob diameter, protein ratio, and oil ratio”
Claim · model-written summary
Applying humic acid did not positively affect germination time, cob diameter, protein ratio or oil ratio of corn
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- applying humic acide2
- Outcome
- germination time, cob diameter, protein ratio, and oil ratioe2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“investigate the impact of humic acid on the growth and yield of corn”
e2“applying humic acid positively affected all vegetative and yield parameters except for the germination time, cob diameter, protein ratio, and oil ratio”
Claim · model-written summary
The interaction of corn cultivars and humic acid doses gave significant results for seed yield, 100 seeds weight and yield per plant
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- humic acid dosese3
- Outcome
- seed yield, 100 seeds weight, yield per plante3
- Qualifier
- interaction between the cultivarse3
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“investigate the impact of humic acid on the growth and yield of corn”
e3“As the result of the interaction between the cultivars and the humic acid doses, significant results were obtained for seed yield, 100 seeds weight, yield per plant, cob diameter, harvest index, leaf area index, stem diameter, and silk appearance time”
Claim · model-written summary
The interaction of corn cultivars and humic acid doses gave significant results for cob diameter, harvest index and leaf area index
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- humic acid dosese3
- Outcome
- cob diameter, harvest index, leaf area indexe3
- Qualifier
- interaction between the cultivarse3
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“investigate the impact of humic acid on the growth and yield of corn”
e3“As the result of the interaction between the cultivars and the humic acid doses, significant results were obtained for seed yield, 100 seeds weight, yield per plant, cob diameter, harvest index, leaf area index, stem diameter, and silk appearance time”
Claim · model-written summary
The interaction of corn cultivars and humic acid doses gave significant results for stem diameter and silk appearance time
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- humic acid dosese3
- Outcome
- stem diameter, and silk appearance timee3
- Qualifier
- interaction between the cultivarse3
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“investigate the impact of humic acid on the growth and yield of corn”
e3“As the result of the interaction between the cultivars and the humic acid doses, significant results were obtained for seed yield, 100 seeds weight, yield per plant, cob diameter, harvest index, leaf area index, stem diameter, and silk appearance time”
Claim · model-written summary
The DKC6050 corn variety gave the highest grain yield (9844.8 kg/ha)
- Taxon
- cornZea mays subsp. mayse1
- Material
- DKC6050e4
- Outcome
- grain yielde4
- Direction
- higheste4
- Value
- 9844.8 kg/hae4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“investigate the impact of humic acid on the growth and yield of corn”
e4“The highest grain yield was obtained from the DKC6050 variety (9844.8 kg/ha)”
Claim · model-written summary
Responses of the two corn cultivars to humic acid were the same, with no appreciable difference between cultivars
- Taxon
- cornZea mays subsp. mayse1
- Outcome
- responses of cultivars to humic acide5
- Qualifier
- no appreciable differencese5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“investigate the impact of humic acid on the growth and yield of corn”
e5“Responses of cultivars to humic acid were the same and therefore no appreciable differences were observed between cultivars for comparison”
Claim · model-written summary
The DKC6050 corn variety is promising and can be cultivated in the research ecology
- Taxon
- cornZea mays subsp. mayse1
- Material
- DKC6050e6
- Outcome
- can be cultivatede6
- Qualifier
- promising varietye6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“investigate the impact of humic acid on the growth and yield of corn”
e6“the DKC6050 variety is a promising variety in terms of many characteristics and can be cultivated in the ecology where the research is carried out”
The same questions in other papers
other · quality: protein · Zea mays (maize)Positive and negative results
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- positive
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220 papers in the same direction as this paper · 26 in the opposite direction · 6 reporting no difference from an alternative
- no effect
- no effect
- positive
249 papers more in this group
See all 253 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.