utilização da fertirrega no grow-in
TRANSCRIPT
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MAINTENENCEFERTIGATION IN GROW IN
Joel NunesSustainable Turfgrass Managment in Asia
2017 March 6 th, Pattaya, Thailand
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URBAN MYTHS ABOUT FERTIGATION
• Can be used in old irrigation systems?• Causes corrosion in material and/or sprinklers?• Can it be used when it rains?• How do we distinguish between areas with different varieties?• How do we know where the fertilizer actually is?• More expensive than granular?
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WHAT IS FERTIGATION?
“Fertigation is a great maintenance tool for an effective and uniform application of soil conditioners and/or nutrients on the golf course with very low labor and very reduced costs”
Charles B. WhiteIn Golf Course Construction, Renovation and Grow-in
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FERTIGATION SYSTEM
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CONTROL SYSTEM
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CONTROL SYSTEM
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DEPOSITS
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Injection Sample recovery
+/- 4 m
Water Flow m3/h
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PIPES
pH Control
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WHAT LED ME TO THINK IN FERTIGATION?
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GOAL
“Joel, we have to open 18 holes in April (2009) and it has to be in great condition!!! What do you think????”
August 2008
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THE COURSE
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STARTING POINT
Grow-in of 18 holes and 9 holes construction Conditioned labor
Greens USGA Tees: 20 cm box silica sand. Fairways & roughs: 20 cm local sand approved by ETL
High percolation No organic matter and very low CEC
Grow-in October to March Air and soil temperatures very low (bermuda) Short days with low luminosity
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FERTILIZATION
Gre
ens
+Tee
s
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WHY FERTIGATION?
NitricAcid
Nitro+ Zn
Humi 15 w/
micros
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HOW TO EXPLAIN TO YOUR ADMINISTRATION?
Agronomic Financial
LogisticsEnvironment
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AGRONOMIC PARAMETERS
Fertilization when ever I want Spoon Feeding Less leaching and volatilization Continuous avaible nutrients for the plant Elimination of burning possibility Control of pH – 6,5 Improvment of soil structure and organic matter (CEC and
microbial soil live) Percolation reduction (study: UALG – Quinta da Ria)
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ENVIRONMENT AND LOGISTIC PARAMETERS
No transportation, storage and handling costs; No application costs; No wear in the machines No labor involved; No traffic in the grow-in areas; Less lixiviation allowing less polution.
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FINANCIAL PARAMETERS
Fertigation equipment: Approx. 4% of irrigation system Fertilizers (Grow-in):
Humifosfato: 6-15-10+5M.O.+ NitroMais Zn: 30-0-0+0,5Zn
Un
idad
es
de
Nu
trie
nte
s
Produto Preço Kg Nutriente
Lixiviação Preço final
Fert. 15-15-15(20€ Bag 50kg)
0,89€ 40 a 50% 1,78€
Nitro 27%(13€ Bag 50kg)
0,96€ 40 a 50% 1,92€
Humifosfato 15 + Nitromais Zn
(0,40€/kg)1,25€ 5 a 10% 1,37€
Extra Nutrients
0,5% Zn
5% M.O.
Product CostKg Nutrient Leaching Final Cost
Per
Un
ito
fN
utr
ein
t
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GROW-IN
Type of Fertilizer
Fertilizationmonth/ha
Price ofFertilization/month.ha
Price ofFetilization /4
months.ha
Price ofFertilization/4 months.50 ha
Nitro 27 +
Granular15-15-15
2 x 200 kgs Nitro 27 +
2 x 200 kgs 15-15-15
(4x13€x2)+(4x20x2) =
264€
264€x4=1056€
1056€x50ha= 52.800€
Humi15 +
NitroMais Zn
150 kgs Humi15 + 300
kgs NitroZn
(150x0,54)+(300x0,34) =
183€183€x4 =732€
732€x50ha= 36.600€
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RESULTS
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CREEPING BENTGRASS
9 SEPTEMBER 09 22 OCTOBER 09
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TALL FESCUE
12 NOVEMBER 09 24 NOVEMBER 09
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TALL FESCUE
22 days after seeding
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BERMUDA TIFWAY 419
21 October (14 days after planting)
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HOLE #4
28 August 09 30 October 09
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HOLE #6
1 OCTOBER 30 OCTOBER
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HOLE #7
1 OCTOBER 09 30 OCTOBER 09
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HOLES #8 & #11
1 OCTOBER 09 30 OCTOBER 09
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RESUME
CHANGE AND READAPT
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OBRIGADOQuestions?