Inadequate oxygen concentration in the root zone is a constraint to plant performance. The air injection in the soil throughout an irrigation system is an attempt to improve the crop yield capacity of the soils with problems of anoxia, such as heavy and/or saline soils. A particular injector (a venturi), the AirJection® Mazzei, injects micro bubbles of air in a subsurface drip irrigation SDI system. To verify the applicability of this technology to the asparagus plants, cultivated in heavy soils, a subsurface drip irrigation systems has been installed in a field with two years old asparagus crops. The first data observed in 2004-2005 show that the positive effect on the asparagus crop production may be found especially in lack oxygen condition (compacted and crusted soils), more evident in the experimental fields with air injector placed at the beginning of the tapes.
Effetti sull'asparago dell'iniezione d'aria nell'acqua irrigua utilizzando un impianto microirriguo interrato
BORTOLINI, LUCIA
2005
Abstract
Inadequate oxygen concentration in the root zone is a constraint to plant performance. The air injection in the soil throughout an irrigation system is an attempt to improve the crop yield capacity of the soils with problems of anoxia, such as heavy and/or saline soils. A particular injector (a venturi), the AirJection® Mazzei, injects micro bubbles of air in a subsurface drip irrigation SDI system. To verify the applicability of this technology to the asparagus plants, cultivated in heavy soils, a subsurface drip irrigation systems has been installed in a field with two years old asparagus crops. The first data observed in 2004-2005 show that the positive effect on the asparagus crop production may be found especially in lack oxygen condition (compacted and crusted soils), more evident in the experimental fields with air injector placed at the beginning of the tapes.
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