Abstract
To study the effect of Zn and B as foliar spray on growth and yield of sweet orange, cv. Blood red at Dargai, Malakand Agency, Pakistan during 2006 and 2007. The micronutrients zinc (Zn) in the form of zinc sulphate (ZnSo4.7H2O) as zinc source at the rate of 0.5 % and 1.0 % and boron (B) in the form of boric acid (H3BO3) at the rate of 0.02 % and 0.04 % were applied as foliar spray at three different stages of plant growth i.e before flower initiation, after fruit set when it becomes berry size and at 40 days interval of second spray. The solution was prepared containing 0.8 % urea and 0.1 % surf as wetting agent. The experiment was laid out in randomized complete block design. The foliar application of Zn and B significantly influenced the days to flowering, fruit yield tree -1 , % dieback, % chlorosis, and % rosette plant -1 , whereas days to fruit set, % fruit set and % fruit drop were not significantly affected by foliar spray of Zn and B alone or either in combination. The maximum fruit yield plant -1 was obtained when high concentration of zinc (1.0 %Zn) with low concentration of boron (0.02 %B) applied to the plants. The maximum days to flowering were obtained in plants treated with foliar Zn, whereas, the combination of Zn and B as foliar spray significantly reduced the % dieback, % chlorosis and % rosette tree -1 . The low conc. of Zn (0.5%) in combination with high conc. of B (0.04%) positively reduced the % dieback, % chlorosis and % rosette tree -1 . A significant variation was observed in control of physiological disorder during two years. Therefore, it is concluded that the foliar application of zinc in combination with boron may be applied in order to increase the production and to control the decline of citrus orchard in Dargai region particularly and in Pakistan generally to maximize the yield and extend the bearing life of citrus plants.
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Claims 10
Claim · model-written summary
Foliar Zn and B significantly affected days to flowering.
- Taxon
- sweet orange
Citrus sinensist0 - Treatment
- foliar application of Zn and Be0
- Outcome
- days to floweringe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The foliar application of Zn and B significantly influenced the days to flowering, fruit yield tree -1 , % dieback, % chlorosis, and % rosette plant -1”
t0“SWEET ORANGE”
Claim · model-written summary
Foliar Zn and B significantly affected fruit yield per tree.
- Taxon
- sweet orangeCitrus sinensist0
- Treatment
- foliar application of Zn and Be0
- Outcome
- fruit yield tree -1e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The foliar application of Zn and B significantly influenced the days to flowering, fruit yield tree -1 , % dieback, % chlorosis, and % rosette plant -1”
t0“SWEET ORANGE”
Claim · model-written summary
Foliar Zn and B significantly affected dieback, chlorosis and rosette incidence.
- Taxon
- sweet orangeCitrus sinensist0
- Treatment
- foliar application of Zn and Be0
- Outcome
- % dieback, % chlorosis, and % rosette plant -1e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The foliar application of Zn and B significantly influenced the days to flowering, fruit yield tree -1 , % dieback, % chlorosis, and % rosette plant -1”
t0“SWEET ORANGE”
Claim · model-written summary
Foliar Zn and B did not significantly affect days to fruit set, fruit set percentage or fruit drop percentage.
- Taxon
- sweet orangeCitrus sinensist0
- Treatment
- foliar spray of Zn and B alone or either in combinatione0
- Outcome
- days to fruit set, % fruit set and % fruit drope0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“whereas days to fruit set, % fruit set and % fruit drop were not significantly affected by foliar spray of Zn and B alone or either in combination”
t0“SWEET ORANGE”
Claim · model-written summary
The highest fruit yield occurred with 1.0 % zinc and 0.02 % boron.
- Taxon
- sweet orangeCitrus sinensist0
- Treatment
- high concentration of zinc (1.0 %Zn) with low concentration of boron (0.02 %B)e0
- Outcome
- fruit yield plant -1e0
- Direction
- maximume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The maximum fruit yield plant -1 was obtained when high concentration of zinc (1.0 %Zn) with low concentration of boron (0.02 %B) applied to the plants”
t0“SWEET ORANGE”
Claim · model-written summary
Foliar Zn treatment produced the greatest days to flowering.
- Taxon
- sweet orangeCitrus sinensist0
- Treatment
- foliar Zne0
- Outcome
- days to floweringe0
- Direction
- maximume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The maximum days to flowering were obtained in plants treated with foliar Zn”
t0“SWEET ORANGE”
Claim · model-written summary
Combined foliar Zn and B significantly reduced dieback, chlorosis and rosette incidence.
- Taxon
- sweet orangeCitrus sinensist0
- Treatment
- combination of Zn and B as foliar spraye0
- Outcome
- % dieback, % chlorosis and % rosette tree -1e0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the combination of Zn and B as foliar spray significantly reduced the % dieback, % chlorosis and % rosette tree -1”
t0“SWEET ORANGE”
Claim · model-written summary
The 0.5% Zn and 0.04% B combination reduced dieback, chlorosis and rosette incidence.
- Taxon
- sweet orangeCitrus sinensist0
- Treatment
- low conc. of Zn (0.5%) in combination with high conc. of B (0.04%)e0
- Outcome
- % dieback, % chlorosis and % rosette tree -1e0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The low conc. of Zn (0.5%) in combination with high conc. of B (0.04%) positively reduced the % dieback, % chlorosis and % rosette tree -1”
t0“SWEET ORANGE”
Claim · model-written summary
Control of physiological disorders varied significantly between years.
- Taxon
- sweet orangeCitrus sinensist0
- Outcome
- control of physiological disordere0
- Qualifier
- during two yearse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A significant variation was observed in control of physiological disorder during two years”
t0“SWEET ORANGE”
Claim · model-written summary
The authors recommend combined foliar zinc and boron to raise production and control citrus decline.
- Treatment
- foliar application of zinc in combination with borone0
- Outcome
- increase the production and to control the declinee0
- Setting
- Dargai regione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the foliar application of zinc in combination with boron may be applied in order to increase the production and to control the decline of citrus orchard in Dargai region particularly and in Pakistan generally”
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See all 77 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.