Assessment of the Rice Panicle Initiation by Using NDVI-Based Vegetation Indexes
Open Access
- 27 October 2021
- journal article
- research article
- Published by MDPI AG in Applied Sciences
- Vol. 11 (21), 10076
- https://doi.org/10.3390/app112110076
Abstract
The assessment of rice panicle initiation is crucial for the management of nitrogen fertilizer application that affects yield and quality of grain. The occurrence of panicle initiation could be determined via either green ring, internode-elongation, or a 1–2 mm panicle, and was observed through manual dissection. The quadratic polynomial regression model was used to construct the model of the trend of normalized difference vegetation index-based vegetation indexes (NDVI-based VIs) between pre-tillering and panicle differentiation stages. The slope of the quadratic polynomial regression model tended to be alleviated in the period in which the panicle initiation stage should occur. The results indicated that the trend of the NDVI-based VIs was correlated with panicle initiation. NDVI-based VIs could be a useful indicator to remotely assess panicle initiation.Keywords
Funding Information
- Ministry of Science and Technology, Taiwan (MOST 110-2637-B-020-005)
This publication has 36 references indexed in Scilit:
- UPTAKE AND UTILIZATION OF 5-SPLIT NITROGEN TOPDRESSING IN AN IMPROVED AND A TRADITIONAL RICE CULTIVAR IN THE BHUTAN HIGHLANDSExperimental Agriculture, 2012
- Differential proteomic response of rice (Oryza sativa) leaves exposed to high‐ and low‐temperature stressProteomics, 2011
- Correlation of the Amount of Nitrogen Accumulated in the Aboveground Biomass at Panicle Initiation and Nitrogen Content of Soil with the Nitrogen Uptake by Lowland Rice during the Period from Panicle Initiation to HeadingPlant Production Science, 2003
- Relationships between leaf pigment content and spectral reflectance across a wide range of species, leaf structures and developmental stagesRemote Sensing of Environment, 2002
- A Uniform, Objective, and Adaptive System for Expressing Rice DevelopmentCrop Science, 2000
- Determining degree-day thresholds from field observationsInternational Journal of Biometeorology, 1999
- Rates of leaf appearance and panicle development in rice (Oryza sativa L.): a comparison at three temperaturesAgricultural and Forest Meteorology, 1993
- Chlorophyll Meter to Predict Nitrogen Topdress Requirement for Semidwarf RiceAgronomy Journal, 1991
- Red and photographic infrared linear combinations for monitoring vegetationRemote Sensing of Environment, 1979
- Heat Units as a Method of Measuring Maturity in Corn1Agronomy Journal, 1958