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P and K grid sampling: what does it yield us?


, : P and K grid sampling: what does it yield us?. Precision agriculture Proceedings of the 3rd International Conference, Minneapolis, Minnesota, USA, 23-26 June 1996: 949-956

Research conducted in fields of cooperating farmers using four rates of applied phosphate across a landscape was focused on providing answers to several questions that have evolved from the practice of grid soil sampling in Minnesota, USA. If taken from the same locations, results of analysis for P and K were not substantially different when samples were collected in June and October.


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