Citrus nutrition growth, yield, quality · Citrus nutrition – growth, yield, ... 2-Nov -04 25 0 0...
Transcript of Citrus nutrition growth, yield, quality · Citrus nutrition – growth, yield, ... 2-Nov -04 25 0 0...
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Citrus nutrition – growth, yield, quality.
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The nutrients – making the fertiliser choices
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Nutrient
Removal
kg/tonne
Potassium 1.6-2.6
Nitrogen 1.2-1.8
Calcium 0.5-1.0
Phosphorus 0.2-0.3
Magnesium 0.1-0.2
Dry matter = 13%
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Choosing the right inputs & eliminating the wrong
Nitrate sources
Ammonium sources
Urea
Mixed nitrogen
sources
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Nitrogen reactions
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Potassium
Nitrate
Sulphate
Thiosulphate
Chloride
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Calcium
Nitrate
Thiosulphate
Chloride
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Phosphorus
MAP
MKP
Ammonium polyphosphate
Superphosphate
DAP
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Magnesium
Nitrate
Sulphate
Thiosulphate
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Young trees or
fruit production
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DRIP IRRIGATED MANDARIN FERTIGATION PROGRAM
DATE
Fert Quantities 1.00 Ha Fert Quantities
12.00 Ha Easy N POT MAP CALCIUM VALAGRO Easy N POT MAP CALCIUM MINIMUM
NITRATE. TECH NITRATE FERRILENE 4.8 NITRATE. TECH NITRATE WATER
L/Ha (Kg/Ha) (Kg/Ha) (Kg/Ha) IRON (Kg/Ha) Litres (Total Kg) (Total Kg) (Kg) VOLUME
17-Aug-04 0 0 0 0 0
24-Aug-04 0 0 0 0 0
31-Aug-04 20 25 240 0 300 0 2700
7-Sep-04 0 0 0 0 0
14-Sep-04 20 25 240 0 300 0 2700
21-Sep-04 25 2.5 0 0 0 300 30 0
28-Sep-04 20 25 240 0 300 0 0 2700
5-Oct-04 25 2.5 0 0 0 300 30 1500
12-Oct-04 0 0 0 0 0 0
19-Oct-04 25 0 0 0 300 0 1500
26-Oct-04 25 0 300 0 0 0 1500
2-Nov-04 25 0 0 0 300 1500
9-Nov-04 25 0 300 0 0 1500
16-Nov-04 25 0 0 0 300 1500
23-Nov-04 25 0 300 0 0 1500
30-Nov-04 25 0 0 0 300 1500
7-Dec-04 25 0 300 0 0 1500
14-Dec-04 25 0 0 0 300 1500
21-Dec-04 25 0 300 0 0 1500
28-Dec-04 25 0 0 0 300 1500
4-Jan-05 25 0 300 0 0 1500
11-Jan-05 25 0 0 0 300 1500
18-Jan-05 25 0 300 0 0 1500
25-Jan-05 25 0 0 0 300 1500
1-Feb-05 25 0 300 0 0 1500
8-Feb-05 25 0 0 0 300 1500
15-Feb-05 25 25 0 300 300 0 3000
22-Feb-05 25 0 0 0 300 1500
1-Mar-05 25 0 300 0 0 1500
8-Mar-05 25 0 0 300 0 1500
15-Mar-05 0 0 0 0 0
22-Mar-05 25 0 0 300 0 1500
29-Mar-05 0 0 0 0 0
4-Apr-05 0 0 0 0 0
Total Fertiliser 60 250 150 300 720 3000 1800 3600
Total Fertiliser Per Ha Old Young
N 25 33 18 48 124 Kg Nitrogen 211 109
P 39 39 Kg Phosphorous 18 7
K 95 95 Kg Potassium 185 50
Ca 57 57 Kg Calcium 58.14 13
Total applied kg/ha N 124; P 39, K 95, Ca 57
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fruit sap test or dry matter
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Base Fertiliser
Platinum Plus or Rustica Plus spread about 4-6 weeks prior to flowering @ 300-400 kg/ha Topdressing or Fertigation
Calcium Nitrate can be spread or banded along the treelines @ about 150 kg/ha soon after fruitset and repeated about 4-6 weeks later. Alternatively, fertigate the calcium nitrate @ 50-70 kg/ha at 7-10 day intervals 5 or 6 times to achieve the same overall total application of 300 kg/ha. After completing the calcium nitrate applications, follow-up with potassium nitrate spread or banded along the treelines @ about 150 kg/ha Alternatively, fertigate the potassium nitrate @ 50-70 kg/ha at 7-10 day intervals 2 or 3 times to achieve similar overall total application of 150 kg/ha. Fertigate with Solu-K (potassium sulphate) @ 50 kg/ha or Thio K @ 50 L/ha during later fruit sizing. Micronutrients can be supplied via foliar spray applications of Brexil Combi and fertigation of Trace-It Total and Ferrilene (specifically for iron).
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