Abstract
In this experiment, spring maize in different N treatments was measured for their canopy and leaves using GreenSeeker. The correlation between NDVI and Chlorophyll a(Chla), as well as Nitrogen(N) was analyzed. The results indicated that canopy NDVI has similar variational trend to Chla and N in the whole growth stage. Furthermore, NDVI is most sensitive to Chla in trumpet stage. Seen from different leaf order, NDVI shows the same variational trend with Chla and N, and NDVI has significant linear correlation with Chla and N. So, based on their significant correlation, GreenSeeker provides an effective means for diagnosis of Chlorophyll a and nitrogen in spring maize.
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Claims 6
Claim · model-written summary
Canopy NDVI tracked chlorophyll a and nitrogen over the growth stage.
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“canopy NDVI has similar variational trend to Chla and N in the whole growth stage”
t0“Spring Maize”
Claim · model-written summary
NDVI was most sensitive to chlorophyll a at trumpet stage.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NDVI is most sensitive to Chla in trumpet stage”
t0“Spring Maize”
Claim · model-written summary
Across leaf orders, NDVI followed chlorophyll a and nitrogen trends.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seen from different leaf order, NDVI shows the same variational trend with Chla and N”
t0“Spring Maize”
Claim · model-written summary
NDVI correlated significantly and linearly with chlorophyll a.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NDVI has significant linear correlation with Chla and N”
t0“Spring Maize”
Claim · model-written summary
NDVI correlated significantly and linearly with nitrogen.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NDVI has significant linear correlation with Chla and N”
t0“Spring Maize”
Claim · model-written summary
GreenSeeker was judged effective for chlorophyll a and nitrogen diagnosis.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GreenSeeker provides an effective means for diagnosis of Chlorophyll a and nitrogen in spring maize”