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- W2371008080 abstract "The intention of site specific management is to optimize grower inputs on areas much smaller than the entire field. These areas may be as small as a few square meters in size. To manage a field on such a scale, data would have to be collected on a similar or smaller scale. To collect the data by hand would be very time consuming, labor intensive and destructive. In recent years, as an important component of site specific soil management in precision agriculture, remote sensing developed greatly. Satellite remote sensing is a promising technique, which could provide the essential, real time and spatially continuous crop information for site specific crop management. Specially, recent advances in the spatial, spectral and temporal resolution of remote sensing as well as potential positive changes in availability of remotely sensed data may make it a profitable tool for more farmers. However, higher cost still hinders its widespread application in agriculture production. In this paper, TM remote sensing image with relatively low cost was studied for the feasibility as a important information resource for evaluating crop yield variability and designing the management unit of soil nutrients. The results showed that Vegetation Index (VI) could reflect the wheat characteristics of each growth stage. Two VI (NDVI and RVI) showed greater spatial variability in accordance with the wheat yield in the field and the largest spatial variability occurred in the late growth period of wheat. NDVI and RVI of three important growth stages of wheat (heading, stooling and jointing stages) were significantly correlated and the significant correlation between wheat yield and NDVI on Nov.18 (stooling stage) was found. Moreover, NDVI and RVI could supply important information on some yield parameters, such as 1000 kernel weight and spike number. This research was preliminary and some other detailed studies would be needed in future." @default.
- W2371008080 created "2016-06-24" @default.
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- W2371008080 date "2001-01-01" @default.
- W2371008080 modified "2023-09-22" @default.
- W2371008080 title "TM Remote Sensing and Yield Variability of Wheat within Fields" @default.
- W2371008080 hasPublicationYear "2001" @default.
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