Nitrate Leaching in Maize (Zea mays L.) and Wheat (Triticum aestivum L.) Irrigated Cropping Systems under Nitrification Inhibitor and/or Intercropping Effects

The use of nitrogen fertilizers in agriculture is currently under high pressure to reduce its environmental impact and improve low efficiency. Nitrification inhibitors and/or intercrops emerged recent decades as useful tools combat these problems. objective the experiment study effect techniques on yield, efficiency (NUE) N leaching a maize–wheat rotation. Six treatments were studied, combining ammonium nitrate sulfate (ASN) alone or with nitrification inhibitor (DMPSA 3,4-dimethylpyrazole succinic acid) absence vetch (Vicia sativa L.) an intercrop. results showed that fertilized did not show significant differences crop development, but DMPSA delayed (NO3?) availability reduced losses (average reductions around 25% after maize harvest). On other hand, intercrop helped negative effects deficiency and, at same time, increased concentration soil during following harvest (4.5 kg ha?1 average wheat harvest) due 14% season). combination both intercrop) time presented synergic greatly improved irrigated system.