Initial production and quality of camu-camu fruits under organic and mineral fertilization

ABSTRACT Camu-camu [Myrciaria dubia (Kunth) McVaugh] is a native plant of the Amazon basin floodplains that is facing a domestication process in dry land. This study aimed to evaluate, qualitatively and quantitatively, camu-camu fruits obtained at the first harvest, in dry land areas, under mineral and organic fertilization. The experimental design was randomized blocks, with 10 treatments and 4 replications. Each experimental plot consisted of 4 lines with 5 holes (3 plants hole-1). Fertilization with organic residues (filter cake and compost + filter cake) every four months provided a higher fruit yield (326 g plant-1). However, the yield was lower when mineral fertilization or its combination with organic matter (76 ± 40 g plant-1) was used. Fertilization with filter cake + compost increased the fruit weight (8.91 g) and size (2.47 cm in diameter and 2.30 cm in length). The mineral and organic fertilization did not influence the chemical characteristics of the camu-camu fruits.

摘要：卡姆果（Camu-camu，学名*Myrciaria dubia* (Kunth) McVaugh）为亚马逊盆地河漫滩原生植物，目前正处于旱地驯化进程中。本研究旨在对旱地首次收获的卡姆果果实开展定性与定量评价，供试材料分别接受矿质肥料与有机肥料施肥处理。试验采用随机区组设计，设置10个处理组与4次重复，每个试验小区包含4行种植带，每行设5个定植穴，每穴定植3株植株。每4个月施加一次有机残体肥料（滤饼与堆肥+滤饼组合），可获得更高的果实产量（326 g·株⁻¹）；但施用矿质肥料，或矿质肥料与有机质配施时，果实产量较低（76 ± 40 g·株⁻¹）。施用滤饼+堆肥可提升果实单果重（8.91 g）与果型规格（直径2.47 cm、长度2.30 cm）。矿质与有机配施并未对卡姆果果实的化学特性产生影响。