Abstract
To produce a stable amount of potatoes of high quality a well distributed water supply matched to the needs of the culture is essential. Although average precipitation in Germany resp. Bavaria delivers enough water to successfully grow most crops suitable to the locale climate, water is often the limiting factor especially for potatoes (and vegetables) on sandy soils and during periods with no or little precipitation. Drip irrigation has worldwide proven to be the most water and energy efficient irrigation method. Therefore it should be the preferred method for future irrigation applications. There is a broad knowledge about drip irrigation for regions with irrigation agriculture. But there is little knowledge about the application of drip irrigation as supplementary irrigation in rain fed agriculture. The aim of the project was to investigate and evaluate the effects of different drip tape / drip line position and irrigation control strategies for potatoes and to deduce extension recommendations from the results. To investigate and to evaluate the different drip tape / drip line positions and irrigation control strategies a randomized plot design with four repetitions was created. Due to the factors and their combination up to 12 irrigation circuits became necessary. All circular flows could be controlled via mobile data transfer and micro controllers. Three drip pipe / drip tape positions (on top of the ridge, between every ridge and between every second ridge) and four irrigation control strategies (start of irrigation at 60 % and 80% effective field capacity, irrigation rate of 4 mmd -1 , 6 mmd -1 ) have been investigated. Soil moisture was simultaneously determined using weather data and a soil moisture model and by using different sensors. Potato yields and quality were determined after harvest. The experiments have been carried out on 3 resp. 2 locations with different soil types (light and heavy soil). The gained results show that under German resp. Bavarian conditions drip irrigation significantly increases potato yield and quality especially on sandy soils. On heavy soils positive effects can only be reached in very dry years. On sandy soils only the drip tape /drip line position on top of the ridge is able to continuously produce increased yields without the risk of water leakage. A high frequency of small water applications is also required. On heavy soils also drip tap / drip line positions between every, or between every second ridge increased the potato yield, although yield effects could only be detected in years with very dry periods.
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Claims 6
Claim · model-written summary
Drip irrigation significantly increased potato yield and quality under German or Bavarian conditions, especially on sandy soils.
- Taxon
- potatoes
Solanum tuberosumt0 - Treatment
- drip irrigatione0
- Outcome
- potato yield and qualitye0
- Direction
- increasese0
- Qualifier
- especially on sandy soilse0
- Setting
- German resp. Bavariane0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under German resp. Bavarian conditions drip irrigation significantly increases potato yield and quality especially on sandy soils”
t0“potatoes”
Claim · model-written summary
On heavy soils, drip irrigation showed positive effects only in very dry years.
- Taxon
- potatoesSolanum tuberosumt0
- Treatment
- Drip irrigationt0
- Outcome
- positive effectse0
- Direction
- positive effectse0
- Qualifier
- On heavy soils positive effects can only be reached in very dry yearse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Drip irrigation for potatoes”
e0“On heavy soils positive effects can only be reached in very dry years”
Claim · model-written summary
On sandy soils, placing drip tape on top of the ridge continuously increased potato yields without water leakage.
- Taxon
- potatoesSolanum tuberosumt0
- Treatment
- drip tape /drip line position on top of the ridgee0
- Outcome
- yieldse0
- Direction
- increasede0
- Qualifier
- On sandy soilse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“potatoes”
e0“On sandy soils only the drip tape /drip line position on top of the ridge is able to continuously produce increased yields without the risk of water leakage”
Claim · model-written summary
The authors state that high-frequency small water applications are required on sandy soils.
- Taxon
- potatoesSolanum tuberosumt0
- Outcome
- A high frequency of small water applications is also requirede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“potatoes”
e0“A high frequency of small water applications is also required”
Claim · model-written summary
Drip lines between every ridge increased potato yield on heavy soils during very dry periods.
- Taxon
- potatoesSolanum tuberosumt0
- Treatment
- between everye0
- Outcome
- potato yielde0
- Direction
- increasede0
- Qualifier
- years with very dry periodse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“potatoes”
e0“On heavy soils also drip tap / drip line positions between every, or between every second ridge increased the potato yield, although yield effects could only be detected in years with very dry periods”
Claim · model-written summary
Drip lines between every second ridge increased potato yield on heavy soils during very dry periods.
- Taxon
- potatoesSolanum tuberosumt0
- Treatment
- between every second ridgee0
- Outcome
- potato yielde0
- Direction
- increasede0
- Qualifier
- years with very dry periodse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“potatoes”
e0“On heavy soils also drip tap / drip line positions between every, or between every second ridge increased the potato yield, although yield effects could only be detected in years with very dry periods”
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See all 9 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.