In the past, farmers mainly relied on experience to understand the growth of crops by observing their colors.

"The method may not be precise, and the camera offers a more direct way," said Zhang Junqiang, developer of the camera and associate researcher at the Changchun Institute of Optical Precision Machinery and Physics of the Chinese Academy of Sciences (CAS).

The software can even offer farmers prescriptions for pest control based on data gathered on the camera, Zhang said.

Like Zhang, scientists have also been developing a series of agricultural monitoring methods in the Northeast Institute of Geography and Agro-ecology of CAS.

Liu Huanjun, a researcher at the institute, said that farmers can dynamically monitor soil and crop conditions as well as the yield, on their phones, and get customized guidance through technolgy developed by the institute.

"With the wide application of technology, more farmers are liberating themselves from toil," Liu said. "Smart agriculture is gradually taking root in the fields."

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