Abstract
This study is intended to examine the growing phases and the harvest of sugarcane crops. The growing phases is analyzed with remote sensing approaches. The remote sensing data employed is Landsat 8. The vegetation indices of Normalized Difference Vegetation Index (NDVI) and Enhanced Normalized Difference Vegetation Index (ENDVI) are employed to analyze the growing phases and the harvest of sugarcane crops. Field survey was conducted in March and August 2017. The research results shows that March is the peak of the third phase (Stem elonging phase or grand growth phase), the period from May to July is the fourth phase (maturing or ripening phase), and the period from August to October is the peak of harvest. In January, the sugarcane crops begin to grow and some sugarcane crops enter the third phase again. The research results also found the sugarcane plants that do not grow well near the oil and gas field. This condition is estimated due as the impact of hydrocarbon microseepage. The benefit of this research is to identify the sugarcane growth cycle and harvest. Having knowing this, it will be easier to plan the seed development and crops transport.
Highlights
Sugarcane represents an important crop for food and fuels in tropical countries (Pongpat et al 2017)
Normalized Difference Vegetation Index The NDVI results indicated that in March the sugarcane crops are dominated by the stem elongating phase or the third phase
In May they are still dominated by the third phase with the NDVI values from 0.7 to 1, but in this month some sugarcanes are starting the maturity phase
Summary
Sugarcane represents an important crop for food and fuels in tropical countries (Pongpat et al 2017). It grows in subtropical countries (Obando et al 2017; Silalertruksa et al 2017). The largest sugarcane producer is Brazil, followed by India, China, Thailand, and Pakistan (FAO 2014; Zhou et al 2015). Indonesia is one of the world's sugar-producing countries. Where in 1984-1985 Indonesia was a sugar self-sufficient country. It failed to be maintained due to increasing population and financial crisis (Fadilah and Sumardjo 2011)
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