Evaluation of measures intended to increase the fertilizer-N recovery by lowland rice
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It was shown that lowland rice responds unfavorably to situations in which the crop is forced to absorb its N as urea. This finding has to be taken into account when in lowland rice culture use is made of chemicals intended to retard the conversion of urea-N to NH4-N. It was furthermore shown that, contrary to what was reported for upland soils, nitripyrin (N-serve) failed to retard the denitrification of NO3 when applied to a submerged soil on which rice was grown.
Key wordsdenitrification inhibitor lowland rice nitrapyrin urea uptake urease inhibition
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