Estimation of harvesting dates of rice (Oryza sativa L.) in Nueva Ecija, Philippines using growing degree days and remotely sensed images

Date

6-2016

Degree

Bachelor of Science in Agricultural Engineering

Major Course

Major in Structures and Environment

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Patrick Lemuel P. Relativo

Restrictions

Restricted: Not available to the general public. Access is available only after consultation with author/thesis adviser and only to those bound by the confidentiality agreement.

Abstract

Land surface temperature data from remotely sensed images such as the MODIS LST can be used in the estimation of air temperature due to the relationship between land and surface temperatures. The estimated air temperature data are available only in weather stations, but not in specific agricultural areas such as rice fields where such data can be useful. In this study, the estimated air temperature data from MODIS LST images were used in the computation of growing degree days (GDD) in order to monitor rice maturity and generate a recommended harvesting schedule for rice fields in Nueva Ecija. Normalized difference vegetation index (NDVI) was used to estimate the actual dates of planting and of complete maturity of rice based on its phenological stages. Results suggested that MODIS LST data and station measured air temperature have a linear relationship with a correlation coefficient equal to 0.791 for the minimum temperature and 0.785 for the maximum temperature. GDD calculations based on estimated air temperature from MODIS LST suggest that harvesting can be done at an average of 92 to 100 days after planting, while based on NDVI, harvesting can be done at an average of 95 days after planting.

Language

English

Location

UPLB College of Engineering and Agro-Industrial Technology (CEAT)

Call Number

LG 993.5 2016 A2 /P35

Document Type

Thesis

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