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Crop canopy sensor orientation for late season nitrogen determination in corn
- Source :
- Journal of Plant Nutrition. 40:2217-2223
- Publication Year :
- 2017
- Publisher :
- Informa UK Limited, 2017.
-
Abstract
- Increasing nitrogen use efficiency (NUE) in irrigated corn production is of great importance to overall agricultural sustainability. Studies have shown that crop canopy sensors can aid in this pursuit as they allow for the determination of nitrogen (N) requirements in split applications later in the growing season. Fertigation can also increase NUE as many split applications can be conducted. If crop canopy sensors could be used to direct N fertigation rates, overall NUE may be increased even further. However, in some cases, N differences may need to be determined later in the growing season after corn has tasseled, which can cause issues with crop canopy sensor readings. Therefore, a study was initiated to evaluate the potential of a crop canopy sensor to differentiate between N levels at two corn (Zea mays) growth stages (R1 and R3) after the corn had tasseled. The sensor was placed in three orientations to evaluate which orientation best determined the corn N status across two sensor-calculated...
- Subjects :
- 0106 biological sciences
Fertigation
Physiology
chemistry.chemical_element
Growing season
04 agricultural and veterinary sciences
N status
01 natural sciences
Nitrogen
Zea mays
Agricultural sustainability
chemistry
Agronomy
040103 agronomy & agriculture
0401 agriculture, forestry, and fisheries
Environmental science
Late season
Plant canopy
Agronomy and Crop Science
010606 plant biology & botany
Subjects
Details
- ISSN :
- 15324087 and 01904167
- Volume :
- 40
- Database :
- OpenAIRE
- Journal :
- Journal of Plant Nutrition
- Accession number :
- edsair.doi...........3855b6cfc52dac12550b3abbca4481d3