The aim of this study was to evaluate the residual effects of micronutrient application with or without filter cake on the supply of micronutrients, i.e., zinc (Zn), copper (Cu), manganese (Mn), iron (Fe), boron (B), and molybdenum (Mo), and sugarcane ratoon performance based on stalk and sugar yield. Two experiments were established in São Paulo state, Brazil, in a Rhodic Hapludox and a Typic Quartzipsamment in a randomized block design with an 8 × 2 factorial scheme. Seven micronutrient treatments (Zn, Cu, Mn, Fe, B, Mo, and all micronutrients) plus one control treatment combined with two filter cake rates (0 and 30 t ha −1 ) were applied in the planting furrow. Leaf micronutrient concentrations and stalk and sugar yields in the first, second, and third sugarcane ratoons were evaluated. The leaf concentrations of micronutrients were not affected by their application in the planting furrows but were affected by filter cake application. In addition, filter cake application increased stalk and sugar yields in both soil types and all ratoons. The micronutrients and filter cake applied in the planting furrow were able to supply micronutrients to sugarcane ratoons. The best plant response was attributed to B and Zn application, and a residual effect of filter cake application was observed in successive ratoons, with increased stalk and sugar yields.

中文翻译：

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滤饼作为甘蔗微量营养素的长期来源

本研究的目的是评估使用或不使用滤饼的微量营养素应用对微量营养素供应的残留影响，即锌 (Zn)、铜 (Cu)、锰 (Mn)、铁 (Fe)、硼 (B) )、钼 (Mo) 和基于茎秆和糖产量的甘蔗宿根性能。在巴西圣保罗州建立了两个实验，分别是 Rhodic Hapludox 和 Typic Quartzipsamment，采用随机区组设计，采用 8 × 2 析因方案。在种植犁沟中应用了七种微量营养素处理（锌、铜、锰、铁、硼、钼和所有微量营养素）加上一种对照处理结合两种滤饼率（0 和 30 t ha -1 ）。评估了第一个、第二个和第三个甘蔗宿根的叶片微量营养素浓度以及茎和糖产量。微量营养素的叶片浓度不受它们在种植沟中的施用的影响，但受滤饼施用的影响。此外，滤饼施用增加了两种土壤类型和所有宿根的茎秆和糖产量。种植沟中施用的微量营养素和滤饼能够为甘蔗宿根提供微量营养素。最好的植物反应归因于 B 和 Zn 的施用，并且在连续再生中观察到滤饼施用的残余效应，增加了茎秆和糖产量。种植沟中施用的微量营养素和滤饼能够为甘蔗宿根提供微量营养素。最好的植物反应归因于 B 和 Zn 的施用，并且在连续再生中观察到滤饼施用的残余效应，增加了茎秆和糖产量。种植沟中施用的微量营养素和滤饼能够为甘蔗宿根提供微量营养素。最好的植物反应归因于 B 和 Zn 的施用，并且在连续再生中观察到滤饼施用的残余效应，增加了茎秆和糖产量。