The effect of drip line placement on yield and quality of drip-irrigated processing tomatoes |
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| Authors: | Blaine Hanson Don May |
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| Institution: | (1) Department of Land, Air and Water Resources, University of California, Davis, CA 95616, USA |
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| Abstract: | Subsurface drip irrigation of processing tomatoes is increasing in California. The common design approach is to bury drip
lines 0.2–0.36 m deep in the middle of the plant row, which places drip lines directly beneath plant rows. This design limits
the use of the drip irrigation system to only those crops compatible with this drip line and bed spacing, and thus, other
design approaches are being investigated to increase the flexibility of the drip systems. These approaches are installing
drip lines in alternate furrows and installing drip lines in every furrow, both of which place drip lines midway between plant
rows. The furrows are the result of the cultural practices used to form beds for planting.This study investigated the effect
of the different drip line placements on crop yield and quality. Results showed that the highest yields occurred for the buried
placement and the smallest yields for the alternate furrow placement. For the buried placement, soil water content and root
density were concentrated around the drip lines, directly beneath the plant rows, while for the furrow placements, zones of
high soil water content and root density did not coincide with the plant rows. However, some growers have found the furrow
placement to reduce some of the disease problems normally experienced with the traditional furrow irrigation methods. |
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| Keywords: | Drip irrigation Irrigation Processing tomatoes |
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