Investigation on the Capability of GreenSeeker Sensor in Predicting Nitrogen Status and Fractional Vegetation Cover of Spinach Crop
Journal Title: Journal of Agricultural Machinery - Year 2022, Vol 12, Issue 1
Abstract
Fractional vegetation cover (FVC) and normalized difference vegetation index (NDVI) are the most important indicators of greenness and have a strong correlation with green biomass. The objective of this study was to evaluate a hand-held GreesnSeeker (GS) active remote sensing instrument to estimate NDVI and FVC in the spinach plant. In this study, the color indices of the G-B index and Excess Green (ExG) were used as color vegetation indices to discriminate leaves from soil background. During 28 to 44 days after emergence (DAG), the results showed good correlations between chlorophyll yield and NDVI (R = 0.61 to 0.91), and the correlation between NDVI of GS and biomass was significant. In addition, in this growth stage, the results showed a good coefficient of correlation between NDVI of GS and FVC (R = 0.67 to 0.82). In assessing the nitrogen rate on the NDVI of GS, the results showed significant differences only at the short period of growth stage (28 to 36 DAG). The results revealed that GreenSeeker performed well for estimation both chlorophyll and biomass yield of spinach crop and it could be used as a suitable instrument for estimation of leaf area index in the middle of the plant growth period.
Authors and Affiliations
M. Hashemi Jozani,H. Bagherpour,J. Hamzei,
Keywords
Related Articles
- EP ID EP718017
- DOI https://doi.org/10.22067/jam.2021.68387.1013
- Views 51
- Downloads 0
Comparison of biogas production from rapeseed and wheat residues in compound with cattle manure
Introduction Seventy million tons of agricultural crops are produced from 18 million hectares of agricultural lands in Iran every year. Since 80% of the crops (wt. basis) ends up as residues, therefore, about 50 million...
Perfomance investigation of thresher T30 at threshing some common wheat varieties
Introduction: In many rural areas, manual threshers are still in use because of the small farming units. However, research sections, have been used manual threshers particularly in breeding unites in many cases due to th...
Degree-Day Index for Estimating the Thermal Requirements of a Greenhouse Equipped with an Air-Earth Heat Exchanger System
In this research, an attempt was made to utilize an Earth-Air Heat Exchanger (EAHE) system as a source of shallow geothermal energy to provide thermal demands of a commercial greenhouse located in Alborz province, Iran....
Detection of Different Percentages of Palm in Corn Oil with the Help of an Electric Nose
IntroductionThe use of corn oil in diets is due to its positive effects on cardiovascular and immune systems. Corn oil is composed of 99% triacylglycerol, with 59% unsaturated fatty acids and 13% saturated fatty acids. O...
Analysis of Workspace and Kinematics of Robot Manipulator for Product Handling in Agricultural Farm
IntroductionRobots have been used for material handling for many years, and their applications have greatly expanded with the integration of intelligent technologies. While numerous researchers have proposed various robo...