【摘 要】
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Ammonium and nitrate concentration in the soil was determined at 0-30, 30-60 and 60-90 cm after using two sources of nitrogen fertilizers: Cote N (4) which is a fertilizer that releases N within four
【机 构】
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Molinos & Cía.S.A, Univ.Nac.Agraria La Molina,
【出 处】
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XIIIth International Asparagus Symposium(第十三届世界芦笋大会)
论文部分内容阅读
Ammonium and nitrate concentration in the soil was determined at 0-30, 30-60 and 60-90 cm after using two sources of nitrogen fertilizers: Cote N (4) which is a fertilizer that releases N within four months, and Stabilized Ammonium Nitrate (SAN), both applied in an asparagus plantation with furrow irrigation.Nitrogen rate used with Cote N (4) was 105,3 kg/ha and with SAN was 203 kg/ha.Cote N (4) was applied at the beginning of the crop, before the first irrigation, and SAN was split in five fractions, each fraction coinciding with one furrow irrigation.
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