Abstract
Abstract This study was carried out in one of the private orchards, which are 20 km away from Kirkuk province in the Altun Kobri area, during the period from May 2021 to August 2021, to study the effect of fertilizing with humic acid at three levels (0, 20, 40) gm and spraying with fertilizer The nano NPK with four levels (0, 1.5, 2.5, 3.5) g.L-1 in some growth characteristics and the yield of apple trees of the local Ibrahimi variety. The experiment was designed according to the design of randomized complete blocks (RCBD), a factorial investigation that included three factors of humic acid and four factors of the compound fertilizer nano NPK and with three replications, the number of treatments in each sector (12) treatments, and with 36 trees included in this experiment, and the treatments were distributed randomly on the experimental units, and for analyzing the data we use the SAS program, and the Duncan polynomial test was adopted under the probability level of 5%. The results showed that the humic acid fertilization gave significant differences in the averages of the studied traits, as the treatment of humic fertilizer at the level (40) gave the highest rate in the following characteristics (the chlorophyll content of the leaves and the proportion of potassium and phosphorous in the leaves). In contrast, the treatment (20) gave the highest rate in Characteristics (the percentage of nitrogen in leaves and leaf area). As for the treatment of spraying with nanocomposite fertilizer with a concentration of (3500), it achieved the highest rate in the characteristics (the content of chlorophyll in the leaves and the percentage of nitrogen, phosphorous and potassium in the leaves), while it gave the concentration (2500) the highest rate in the leaf area. The results also showed that the binary interaction achieved significant differences in the studied traits, as treatment (40) of humic fertilizer and (3500) of the nano-complex fertilizer achieved the highest rate in most of the studied features, namely (leaf area, leaf content of chlorophyll and phosphorous percentage in leaves).
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Claims 5
Claim · model-written summary
Humic fertilizer at level 40 maximized leaf chlorophyll, potassium and phosphorous.
- Taxon
- Apple Trees
Malus domesticat0 - Treatment
- humic fertilizer at the level (40)e0
- Outcome
- chlorophyll content of the leaves and the proportion of potassium and phosphorous in the leavese0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the treatment of humic fertilizer at the level (40) gave the highest rate in the following characteristics (the chlorophyll content of the leaves and the proportion of potassium and phosphorous in the leaves)”
t0“Apple Trees”
Claim · model-written summary
Humic fertilizer level 20 maximized leaf nitrogen and leaf area.
- Taxon
- Apple TreesMalus domesticat0
- Treatment
- treatment (20)e0
- Outcome
- percentage of nitrogen in leaves and leaf areae0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the treatment (20) gave the highest rate in Characteristics (the percentage of nitrogen in leaves and leaf area)”
t0“Apple Trees”
Claim · model-written summary
Nano fertilizer at concentration 3500 maximized leaf chlorophyll and N, P and K percentages.
- Taxon
- Apple TreesMalus domesticat0
- Treatment
- nanocomposite fertilizer with a concentration of (3500)e0
- Outcome
- content of chlorophyll in the leaves and the percentage of nitrogen, phosphorous and potassium in the leavese0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spraying with nanocomposite fertilizer with a concentration of (3500), it achieved the highest rate in the characteristics (the content of chlorophyll in the leaves and the percentage of nitrogen, phosphorous and potassium in the leaves)”
t0“Apple Trees”
Claim · model-written summary
Nano fertilizer concentration 2500 maximized leaf area.
- Taxon
- Apple TreesMalus domesticat0
- Treatment
- concentration (2500)e0
- Outcome
- leaf areae0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it gave the concentration (2500) the highest rate in the leaf area”
t0“Apple Trees”
Claim · model-written summary
Combined humic level 40 and nano fertilizer 3500 maximized leaf area, chlorophyll and phosphorus.
- Taxon
- Apple TreesMalus domesticat0
- Treatment
- treatment (40) of humic fertilizer and (3500) of the nano-complex fertilizere0
- Outcome
- leaf area, leaf content of chlorophyll and phosphorous percentage in leavese0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“treatment (40) of humic fertilizer and (3500) of the nano-complex fertilizer achieved the highest rate in most of the studied features, namely (leaf area, leaf content of chlorophyll and phosphorous percentage in leaves)”
t0“Apple Trees”
The same questions in other papers
fertilization · physiology: pigments · Malus domestica (apple)Positive and negative results
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- negative
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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.