The dynamics of rice biophysical variables in irrigated and non-irrigated systems during the growing season

Abstract

Rice biophysical is relevant with rice yield and able to analyses the correlation with satellite data. Thus, the study aims to investigate which parameters significant with rice yield. The study conducts in three provinces located in the Chao Phraya River delta in Thailand, which is main rice cultivated area of country. The primary data use based on the field experiments in the wet season rice of 2017 and separated different 5 growth stages (e.g., seeding, tillering, panicle, flowering, and harvesting). Several of rice biophysical are collected such as agricultural practices, stem density, water depth, height, Leaf Area Index (LAI), chlorophyll contents, wet-dry biomass, and rice yield. Then, the average of rice biophysical are demonstrated with the different rice variety and irrigation. The dynamics of rice biophysical are distinguish from others; then, the study analyses with the Pearson correlation at P-value 0.05 and two-tailed significance. The result suggests the appropriate rice biophysical based on rice yield.