Abstract
In some corn fields, in different parts of Iran, the phenomenon of partly grain free ear is observed. This phenomenon can severely decreases corn yield. Although most researchers, mention that this phenomenon is the result of moisture and heat stresses at the time of pollination, but some other researches believed that it is due to the nutritional factors, especially boron and zinc nutritional elements. In order to examine the effect of zinc and boron application on corn grain production, an experiment was conducted at Qarakheil Agricultural research station in Qaemshahr during the 2003-2005. The experiment was factorial and conducted in the field as a Randomized Complete Block Design, with 20 treatments, and 3 replications. The treatments were composed of five level of zinc (O, 8, 16 and 24 kg.ha-1 in soil and foliar application of ZnSO4 with 0.5 percent concentration) and four levels of Boron (0, 20 and 40 kg.ha-1 of boric acid in soil and foliar application of boric acid with 0.3 percent concentration), and finally their means were compared. The result from Mazandaran experiment, showed that application of zinc caused a significant increased in grain yield (α = 5%), but application of Boron individually or zinc in combination with boron, had not significant effect on grain yield. The maximum grain yield (10380 kg.ha-1) was obtained due to application of 120 kg. ha-1 ZnS04 and 40 kg. ha-1 Boric Acid, which produced more yield (1415 kg. ha-1) to chek (B=0 and ZN=0) . The application of zinc individually had only a significant effect on the length of corn ear and plant height, but application of Zn + B had significant effect on length and diameter of corn ear percent of partly grain free and their effect on other studied parameters were not significant.
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Claims 6
Claim · model-written summary
Zinc application significantly increased corn grain yield.
- Taxon
- CORN
Zea mays subsp. mayst0 - Treatment
- application of zince0
- Outcome
- grain yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of zinc caused a significant increased in grain yield (α = 5%)”
t0“CORN”
Claim · model-written summary
Boron alone had no significant effect on grain yield.
- Taxon
- CORNZea mays subsp. mayst0
- Treatment
- application of Boron individuallye0
- Outcome
- grain yielde0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of Boron individually or zinc in combination with boron, had not significant effect on grain yield”
t0“CORN”
Claim · model-written summary
Zinc combined with boron had no significant effect on grain yield.
- Taxon
- CORNZea mays subsp. mayst0
- Treatment
- zinc in combination with borone0
- Outcome
- grain yielde0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“zinc in combination with boron, had not significant effect on grain yield”
t0“CORN”
Claim · model-written summary
The highest grain yield was 10380 kg.ha-1 with the stated zinc and boric acid treatment, 1415 kg. ha-1 above the check.
- Taxon
- CORNZea mays subsp. mayst0
- Treatment
- application of 120 kg. ha-1 ZnS04 and 40 kg. ha-1 Boric Acide0
- Outcome
- grain yielde0
- Direction
- maximume0
- Value
- 10380 kg.ha-1e0
- Qualifier
- 1415 kg. ha-1e0
- Comparator
- chek (B=0 and ZN=0)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The maximum grain yield (10380 kg.ha-1) was obtained due to application of 120 kg. ha-1 ZnS04 and 40 kg. ha-1 Boric Acid, which produced more yield (1415 kg. ha-1) to chek (B=0 and ZN=0)”
t0“CORN”
Claim · model-written summary
Zinc alone significantly affected corn ear length and plant height.
- Taxon
- CORNZea mays subsp. mayst0
- Treatment
- application of zinc individuallye0
- Outcome
- length of corn ear and plant heighte0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of zinc individually had only a significant effect on the length of corn ear and plant height”
t0“CORN”
Claim · model-written summary
Zinc plus boron significantly affected corn ear length, diameter, and partly grain-free percentage.
- Taxon
- CORNZea mays subsp. mayst0
- Treatment
- application of Zn + Be0
- Outcome
- length and diameter of corn ear percent of partly grain freee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of Zn + B had significant effect on length and diameter of corn ear percent of partly grain free”
t0“CORN”
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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.