Pereira Ramos Elmo, Borges de Aguiar Diego, Mota Barbosa Ana Kelly, de Souza Oliveira Vinicius, de Oliveira Arantes Lúcio, Romais Schmildt Edilson, Ralph Falqueto Antelmo, Alves Fernandes Adriano, Dousseau-Arantes Sara
Instituto Capixaba de Pesquisa, Assistência Técnica e Extensão Rural, Linhares, Espírito Santo, Brazil.
Departamento de Ciências Biológicas, Centro de Ciências Humanas e Naturais, Universidade Federal do Espírito Santo, Avenida Fernando Ferrari, 514, Goiabeiras, Vitória, Espírito Santo, Brazil.
Front Plant Sci. 2025 Aug 8;16:1630560. doi: 10.3389/fpls.2025.1630560. eCollection 2025.
The production ofpapaya seedlings is one of the main steps for establishing crops that present maximum quality performance. Nutritional availability is one of the factors limiting the formation process of quality seedlings, and fertilization is often done without technical criteria. Thus, the objective of this study was to evaluate the effect of different doses of sp., obtained from different sources, on the development and growth of 'Aliança' papaya seedlings.
The study was developed at the Experimental Farm of the Capixaba Institute of Research, Technical Assistance, and Rural Extension, in the municipality of Linhares, north of the state of Espírito Santo. The experimental design used was randomized blocks in a factorial scheme, where the first factor was composed of three commercial sources of sp. (LT Supra®; Algen® and Primaz®). The second factor was composed of six different doses, namely: 0; 2; 4; 6; 8; and 10 kg m of sp. At 37 days after sowing, the seedlings were evaluated for the following characteristics: germination percentage; leaf area; stem length; stem mass fraction; root length; stem diameter; leaf dry mass; stem dry mass; root dry mass; and total dry mass. The content of nitrogen, phosphorus, potassium, calcium, magnesium, and sulfur in the leaves and roots was also evaluated.
The use of sp. on 'Aliança' papaya seedlings promoted leaf and stem growth and development, dry matter accumulation, and improved germination percentage. sp. from the coast of Espírito Santo (LT supra®) promoted significant gains in germination percentage, leaf area, stem length, root collar diameter, leaf dry matter, stem dry matter, and total dry matter. sp. from the coast of Maranhão (Algen®) and Bahia (Prima®) increased leaf phosphorus and root sulfur levels.
sp. promoted a biostimulant effect with improved growth and development in 'Aliança' papaya seedlings, with a dosage close to 4 kg m, with the LT supra® product being the most recommended.
番木瓜幼苗的培育是建立具有最高品质表现作物的主要步骤之一。养分有效性是限制优质幼苗形成过程的因素之一，施肥往往缺乏技术标准。因此，本研究的目的是评估从不同来源获得的不同剂量的[具体物质名称未给出，用“sp.”代替]对‘阿里亚娜’番木瓜幼苗发育和生长的影响。
该研究在圣埃斯皮里图州北部林哈雷斯市的卡皮克萨巴研究、技术援助和农村推广研究所的试验农场进行。采用的试验设计是析因方案中的随机区组设计，其中第一个因素由三种[具体物质名称未给出，用“sp.”代替]的商业来源组成（LT Supra®；Algen®和Primaz®）。第二个因素由六种不同剂量组成，即：0；2；4；6；8；和10 kg/m²的[具体物质名称未给出，用“sp.”代替]。播种后37天，对幼苗进行以下特征评估：发芽率；叶面积；茎长；茎质量分数；根长；茎直径；叶干质量；茎干质量；根干质量；和总干质量。还评估了叶和根中氮、磷、钾、钙、镁和硫的含量。
在‘阿里亚娜’番木瓜幼苗上使用[具体物质名称未给出，用“sp.”代替]促进了叶和茎的生长发育、干物质积累，并提高了发芽率。来自圣埃斯皮里图州海岸的[具体物质名称未给出，用“sp.”代替]（LT supra®）使发芽率、叶面积、茎长、根茎直径、叶干物质、茎干物质和总干物质显著增加。来自马拉尼昂州海岸的[具体物质名称未给出，用“sp.”代替]（Algen®）和巴伊亚州的[具体物质名称未给出，用“sp.”代替]（Prima®）提高了叶磷和根硫水平。
[具体物质名称未给出，用“sp.”代替]对‘阿里亚娜’番木瓜幼苗具有生物刺激作用，可促进其生长发育，剂量接近4 kg/m²，最推荐使用LT supra®产品。
