Blackberry cultivars, nitrogen and potassium fertilization under drastic summer pruning in a subtropical area

IF 1.2 4区 农林科学 Q2 AGRICULTURE, MULTIDISCIPLINARY
L. Teixeira, José Emílio Bettiol Neto, J. Sanches, R. Pio
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引用次数: 1

Abstract

The expansion of blackberry cropping in subtropical regions is recent, requiring adaptability studies and the development of new cultivars, as well as suitable plant management. Aiming to study adaptability and agronomic performance of blackberry (Rubus spp.) under drastic summer pruning in a subtropical region, the response of four blackberry cultivars (‘BRS Tupy’, ‘Guarani’, ‘Brazos’ and ‘Choctaw’) to N and K fertilization was evaluated during two growing seasons in Jundiaí (Brazil). The experiment used split-plots in a randomized complete block design with four replicates. The plots consisted of combinations of three N rates (75, 150 and 300 kg·ha–1·year–1) and three K rates (50, 100 and 200 kg·ha–1·year–1 of K2O) in factorial arrangement and an additional control treatment without fertilizer application. In the subplots, four cultivars of blackberry were studied. Considering fruit yield, accumulation of phytomass and mineral elements, as well as the nutrient efficiency use, the cultivars that showed greater adaptation to cultivation in a subtropical area under drastic summer pruning management are ‘Brazos’, ‘Guarani’, ‘BRS Tupy’ and ‘Choctaw’, in that order. An annual application of 120 and 67 kg·ha–1 of N and K2O, respectively, is expected to be sufficient to achieve maximum economic yield.
黑莓品种与亚热带地区夏季剪枝下氮钾施肥
黑莓在亚热带地区的种植是最近才开始扩大的,需要进行适应性研究和培育新品种,以及适当的植物管理。为研究亚热带地区黑莓(Rubus spp.)在夏季大修剪条件下的适应性和农艺性能,在巴西Jundiaí研究了4个黑莓品种(BRS Tupy)、瓜拉尼(Guarani)、布拉索斯(Brazos)和乔克托(Choctaw)两个生长季节对氮肥和钾肥的响应。实验采用完全随机区组设计,分为4个重复。试验田按因子组合设置3个施氮量(75、150和300 kg·ha-1·年- 1)和3个施钾量(50、100和200 kg·ha-1·年- 1),外加对照处理不施肥。在小样中,研究了四个黑莓品种。考虑到果实产量、植物质量和矿质元素积累以及养分利用效率,在夏季修剪管理下,对亚热带地区栽培表现出更强适应性的品种依次为“Brazos”、“Guarani”、“BRS Tupy”和“Choctaw”。N和K2O的年施用量分别为120和67 kg·hm - 1,预计足以实现最大经济产量。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Bragantia
Bragantia AGRICULTURE, MULTIDISCIPLINARY-
CiteScore
2.40
自引率
8.30%
发文量
33
审稿时长
4 weeks
期刊介绍: Bragantia é uma revista de ciências agronômicas editada pelo Instituto Agronômico da Agência Paulista de Tecnologia dos Agronegócios, da Secretaria de Agricultura e Abastecimento do Estado de São Paulo, com o objetivo de publicar trabalhos científicos originais que contribuam para o desenvolvimento das ciências agronômicas. A revista é publicada desde 1941, tornando-se semestral em 1984, quadrimestral em 2001 e trimestral em 2005. É filiada à Associação Brasileira de Editores Científicos (ABEC).
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