Planting position and application of different doses of nitrogen at different times on cassava

IF 1.2 4区农林科学 Q2 AGRICULTURE, MULTIDISCIPLINARY

Ciencia E Agrotecnologia Pub Date : 2022-01-01 DOI:10.1590/1413-7054202246002722

J. Aguilera, Bruna Izabel Krewer, N. J. Ribeiro, A. M. Zuffo, R. Ratke, Ahmed Youssef Abdelnabi Mohamed Elsayed

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Abstract

ABSTRACT In this study, we evaluated the impact of two planting positions of cassava cuttings, cv. ‘Vassourinha’, combined with different times and doses of nitrogen application, on productivity and other agronomic traits. In the experiment, the treatment was completely randomized using a 2 × 3 × 4 factorial scheme with two positions of the cuttings [horizontal (PH) and vertical (PV)], three instances of N application (45, 90, and 135 days after planting), and four doses of N (0, 80, 160, and 240 kg ha-1), with six repetitions. We recorded and evaluated the plant height, number of shoots, stem diameter, biomass of the aerial part, number of commercial roots, the total production, and the collection index. The addition of 240 kg ha-1 N and PH increased plant height and stem diameter but did not affect the number of commercial roots, total production, or the collection index. The treatment involving the addition of nitrogen fertilizer 135 days after planting with 240 kg ha-1 N and planting in the PV provided the highest amount of shoot biomass without influencing crop productivity.

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木薯的种植位置及不同时间施氮量

摘要/ ABSTRACT摘要:本研究以木薯插枝为研究对象，研究了两种种植位置对玉米产量的影响。“Vassourinha”，结合不同的施氮时间和剂量，对生产力和其他农艺性状的影响。试验采用2 × 3 × 4因子随机处理方案，2个扦插位置[水平(PH)和垂直(PV)]， 3次施氮(种植后45、90和135 d)， 4次施氮(0、80、160和240 kg hm -1)， 6个重复。对其株高、芽数、茎粗、地上部分生物量、商品根数、总产量和采收指数进行了记录和评价。添加240 kg hm -1 N和PH可增加植株高度和茎粗，但对商品根数、总产量和收集指数没有影响。种植后135 d施氮240 kg hm -1，在不影响作物生产力的情况下，在PV中种植的处理提供了最高的地上部生物量。

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来源期刊

Ciencia E Agrotecnologia 农林科学-农业综合

CiteScore

2.30

自引率

9.10%

发文量

审稿时长

6-12 weeks

期刊介绍： A Ciência e Agrotecnologia, editada a cada 2 meses pela Editora da Universidade Federal de Lavras (UFLA), publica artigos científicos de interesse agropecuário elaborados por membros da comunidade científica nacional e internacional. A revista é distribuída em âmbito nacional e internacional para bibliotecas de Faculdades, Universidades e Instituições de Pesquisa.