The use of organomineral fertilizers in agriculture instead of mineral fertilizers is a way to add organic compounds to the soil, potentially improving its properties and crop production. Our objective was to evaluate the agronomic efficiency of an organomineral fertilizer manufactured from poultry litter and mineral fertilizers. The experiment was carried out in a Humic Cambisol in the subtropical region of Brazil, with high organic matter content, low phosphorus content, and very high potassium content. The study consisted of six treatments: mineral fertilizer (monoammonium phosphate, KCl, and urea), at rates of 100 and 150% of the technical recommendation; organic fertilizer (poultry litter), at 100% rate; organomineral fertilizer (poultry litter + monoammonium phosphate), at rates of 100 and 150%; and control treatment (without fertilization). Between 2015 and 2017, common bean (Phaseolus vulgaris), wheat (Triticum aestivum L.), and corn (Zea mays L.) were sequentially cultivated. Before performing the experiment and at the end of the fourth crop, chemical properties of the soil were analyzed in the 0‐ to 10‐ and 10‐ to 20‐cm layers. The use of fertilizers increased crop yield, but there was no difference between the three fertilizer sources or between the 100 and 150% rates of the technical recommendation. Chemical properties of the soil were altered in a similar manner with fertilization, regardless of the fertilizer source used. According to the results, the organomineral fertilizer can replace mineral fertilizers with equivalent performance.

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巴西南部连续谷物作物中有机矿物肥料的农艺效率

在农业中使用有机矿物肥料代替矿物肥料是向土壤添加有机化合物的一种方式，有可能改善土壤的特性和作物产量。我们的目标是评估由家禽垫料和矿物肥料制成的有机矿物肥料的农艺效率。该实验是在巴西亚热带地区的Humic Cambisol中进行的，该有机质含量高，磷含量低且钾含量非常高。该研究包括六种处理方法：矿物肥料（磷酸一铵，氯化钾和尿素），分别为技术建议的100％和150％。有机肥料（家禽垃圾），比例为100％；有机矿物肥料（家禽垃圾+磷酸一铵），比例分别为100％和150％；并控制治疗（不施肥）。依次种植菜豆，小麦（小麦）和玉米（玉米）。在进行实验之前和第四茬结束时，在0到10厘米和10到20厘米的层中分析了土壤的化学性质。肥料的使用增加了农作物的产量，但三种肥料之间或技术建议的100％至150％的比率之间没有差异。不管使用何种肥料，土壤的化学性质都以类似的方式随着施肥而改变。根据结果​​，有机矿物肥料可以替代具有相同性能的矿物肥料。