Abstract
A field study was carried out during three successive growing seasons of 2018, 2019 and 2020 on Seqae date palm produced from tissue culture grown in a private orchard at El-Dakhala Oasis, Al-Wadi Al-Jadid Governorate, Egypt (latitude 25 and longitude 29 ). The palms were received different rates of N, P and K fertilization. Three N-fertigation rates (N1= 500, N2= 750, N3= 1000 g actual N/palm/year) in the form of NH4NO3; two P-fertigation rates (P1=400 and P2=800g P2O5 /palm/year) as H3PO4 and two K-fertigation rates (K1=600 and K2=1200 g K2O /palm/ year) as K2SO4. All the considered N and K rates were divided into 80 unequal doses applied from first week of February to the last week of November (8 doses in each month). Full dose of nitrogen in month's (February, April, June, August and October). Half of nitrogen was used in March, May, July, August, September and November. While full dose of potassium in months (March, May, July, September and November) half of potassium was used in February, April, June, August and October. While P rate was divided into 40 doses (4 doses / month) and were added as solution by fertigation. The results showed that NP and K fertigation increased growth , fruit set ,yield and improved the fruit physical characteristics (fruit weight and fruit dimension) and fruit chemical characteristics ( total sugars % and T.S.S) at tamer stage , especially with high levels of NPK-fertigation. Thus, it is recommended to add the high levels of Nitrogen (1000g N/palm/year) Phosphorus (800 g P2O5 / palm) and Potassium (1200g K2O/palm /year) (treatment 12) to increase the yield and fruit quality of Seqae date palm grown under Al-Wadi Al-Jadid Governorate conditions.
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Claims 3
Claim · model-written summary
NPK fertigation increased date palm growth, fruit set and yield, especially at high rates.
- Taxon
- Seqae date palme2
- Treatment
- NP and K fertigatione0
- Outcome
- growth , fruit set ,yielde0
- Direction
- increasede0
- Qualifier
- high levels of NPK-fertigatione1
Not reportedComparator
Verbatim
e0“NP and K fertigation increased growth , fruit set ,yield”
e1“especially with high levels of NPK-fertigation”
e2“on Seqae date palm produced from tissue culture”
Claim · model-written summary
NPK fertigation improved fruit physical and chemical characteristics at the tamer stage.
- Taxon
- Seqae date palme2
- Organ / stage
- tamer stagee0
- Treatment
- NP and K fertigatione1
- Outcome
- fruit physical characteristics (fruit weight and fruit dimension) and fruit chemical characteristics ( total sugars % and T.S.S)e0
- Direction
- improvede0
Not reportedComparator
Verbatim
e0“improved the fruit physical characteristics (fruit weight and fruit dimension) and fruit chemical characteristics ( total sugars % and T.S.S) at tamer stage”
e1“NP and K fertigation”
e2“on Seqae date palm produced from tissue culture”
Claim · model-written summary
Authors recommend the highest NPK rates to increase date palm yield and fruit quality.
Verbatim
e0“it is recommended to add the high levels of Nitrogen (1000g N/palm/year) Phosphorus (800 g P2O5 / palm) and Potassium (1200g K2O/palm /year) (treatment 12) to increase the yield and fruit quality of Seqae date palm”
e1“Al-Wadi Al-Jadid Governorate conditions”