Drip irrigation in finland
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Drip irrigation in Finland. Merja Myllys 1 and Osmo Purhonen 2 * 1 MTT Agrifood Research Finland, Plant Production Research, FI-31600 Jokioinen, Finland 2 Myllykyläntie 28, FI-20960 Turku, Finland * corresponding and presenting author, [email protected] . Contents.

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Drip irrigation in Finland

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Drip irrigation in finland

Dripirrigation in Finland

Merja Myllys1 and Osmo Purhonen2*

1 MTT Agrifood Research Finland, Plant Production Research, FI-31600 Jokioinen, Finland

2 Myllykyläntie 28, FI-20960 Turku, Finland

* corresponding and presenting author, [email protected]


Contents

Contents

  • Need for irrigation

  • Irrigationmethods

  • Dripirrigation; latestresults

    • potatocropproduction

    • horticulturalcropproduction

  • Futureprospects


Drip irrigation in finland

Precipitation and evaporation in Finland

Picture: FinnishFieldDrainage Centre


Need for irrigation

Need for irrigation

  • Borealclimaticzone

  • WaterdeficiencyfromMay to July ≈125 mm

  • Need for irrigationdepends on storagecapacity of soil

  • Drainage is moreimportantthanirrigation

  • Irrigation is alsoused to preventfrostdamages (20-40 mm/night)


Irrigation methods

Irrigationmethods

  • Irrigationwasintroducedlate: in 1960’

  • Sprinkler and boomirrigationareprevailingmethods

  • 9% of farmshaveirrigationequipment

  • 80 000 hectares out of 2.4 milj. hectarescanbeirrigated

  • Irrigationwaterfromnaturalwatercourses

  • 2% of totalrun-off is utilized for municipal and industrialpurposes, minorpart for irrigation


Irrigation methods1

Irrigationmethods


Drip irrigation

Dripirrigation

  • Novelmethod on field


1 drip irrigation in potato crop production

1) Dripirrigation in potatocropproduction

  • On-farmfieldexperiment; one main farm (alltreatments) + fourothers (sometreatments in each)

  • Treatments: dripirrigation, sprinkler, boom, subsurfaceirrigation, no irrigation

  • Measurments/observations: water and nutrient status of the soil, yield and yieldquality of the potatocrop


Drip irrigation in potato crop production

Dripirrigation in potatocropproduction

  • Allmethodsincreasedyield

  • Dripirrigationincreased proportion of marketableyield(tubersize 35-55 mm)


Drip irrigation in potato crop production1

Dripirrigation in potatocropproduction

  • Possibility to addliquidfertilizes in the irrigationwaterincreased the importantcalciumcontent in the tubers


Drip irrigation in potato crop production2

Dripirrigation in potatocropproduction

  • Dripirrigationdiminishedleaching of nutrientsduringgrowingseason(the redbarindicateshowmuchnutrientsareleftafterharvest)


2 drip irrigation in horticultural crop production

2) Dripirrigation in horticulturalcropproduction

  • Jointseries of fieldexperiments

  • Cropswerepicklingcucumber, strawberry, blackcurrant and raspberry

  • Productionpractises, workdemand, and economywerestudied

  • Guidelines for farmerswere made


Drip irrigation in horticultural crop production

Dripirrigation in horticulturalcropproduction

  • Cropbenefitedfromdripirrigationwhichwasstartedwhentensiometresindicatedsuction of -150 to -300 hPa.

  • Especiallyberrycropsbenefitedfromaddedfertilizers in the irrigationwater


Drip irrigation in horticultural crop production1

Dripirrigation in horticulturalcropproduction

  • Installation of dripirrigationsystemrequires a lot of work

  • Productioncosts per farmincrease

  • Productioncosts per kg of yielddecreasedif the amount of yieldexceeded

    • 8 – 9 000 kg/ha for strawberry

    • 6 - 9 000 kg/ha for blackcurrant

    • 55 000 kg/ha for picklingcucumber


Conclusions

Conclusions

  • As waterreservoirsareplenty in Finland, lack of irrigationwater is not the main reason to choosedripirrigationinstead of anothermethod.

  • Reasonsare

    • the possibility for fertilizationduring the growingseason

    • minimizedleaching of nutrients

    • efficientuse of water and nutrients

    • ease of useonceinstalled


Conclusions1

Conclusions

  • Disadvantages of dripirrigationare

    • Laboriousinstalling

    • The factthatdripirrigationcannotbeused for preventingfrostdamages


Future prospects

Futureprospects

  • Dripirrigationwillbemorecommonlyused in highvalueperennialcropproduction

  • Due to highinstallationcostdripirrigationwillnotbewidelyused for annualcropproduction

  • Need for irrigationwillincreasedue to climatechange


Thank you

Thankyou!


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