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Results of trials with PPDA-urea in large-scale trials with winter cereals



Results of trials with PPDA-urea in large-scale trials with winter cereals



Archiv fur Acker und Pflanzenbau und Bodenkunde 27(3): 177-184



Farm-scale trials on various soil types confirmed previous results of smaller scale trials on the effect of PPDA (phosphoric acid phenylester diamide) treated urea on yields of winter rye and winter wheat. In 1978-80, av. yields of winter rye were 3.51, 3.35, 3.51 and 3.71 t/ha with calcium ammonium nitrate, conditioned urea, 0.5% PPDA-urea and 1% PPDA-urea, compared with 2.26 t without N fertilizer. Corresponding yields for winter wheat were 4.46, 4.41, 4.66, 4.62 and 3.27 t/ha.

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