Journal
HORTTECHNOLOGY
Volume 16, Issue 3, Pages 408-412Publisher
AMER SOC HORTICULTURAL SCIENCE
DOI: 10.21273/HORTTECH.16.3.0408
Keywords
chlorophyll meter; SPAD; Dualex; Greenseeker; saturation index; saturated reference plot; water quality; runoff; leaching
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Weather is the primary driver of both plant growth and soil conditions. As a consequence of unpredictable weather effects on crop requirements, more inputs are being applied as an insurance policy. Best management practices (BMPs) are therefore about using minimal input for maximal return in a context of unpredictable weather events. This paper proposes a set of complementary actions and tools as BMP for nitrogen (N) fertilization of vegetable crops: 1) planning from an N budget, 2) reference plot establishment, and 3) crop sensing prior to in-season N application based on a saturation index related to N requirement.
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