Growth of pecan rootstocks with the use of liquid humus in an organic production system

Q3 Agricultural and Biological Sciences

Comunicata Scientiae Pub Date : 2023-08-07 DOI:10.14295/cs.v14.3957

Guilherme Ferreira da Silva, Cristiano Geremias Hellwig, Caroline Farias Barreto, C. Martins, P. Mello-Farias

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Abstract

Pecan farming is a long-term investment which needs quality seedlings to establish an orchard. Pecan rootstocksmust have a vigorous radicular system to form quality seedlings. Liquid humus, which acts as an agent thatpromotes their growth and development, is a bioinput that is specially used in organic production systems.This study aimed at evaluating effects of different frequencies of liquid humus application on pecan rootstockgrowth and development in an organic system. Liquid humus at 30% was applied every 7, 14, 21 and 28 days.The control treatment consisted of water application. The experiment was carried out with ‘Barton’ rootstocksin a greenhouse at the Embrapa Clima Temperado located in Pelotas, RS, Brazil. The following variables wereevaluated 280 and 480 days after transplantation: plant height; stem diameter; leaf area; fresh and dry massesof the aerial part; main and secondary root lengths; fresh and dry masses of roots; fresh and dry masses of themain root; fresh and dry masses of secondary roots; and the Dickson Quality Index. Liquid humus increasedsecondary root length of pecan rootstocks, mainly when it was applied every seven days. Thus, the bioinputmay be used for this purpose.

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有机生产系统中液体腐殖质对山核桃砧木生长的影响

山核桃种植是一项长期投资，需要优质的树苗来建立果园。山核桃砧木必须具有旺盛的根状系统才能形成优质的幼苗。液体腐殖质是有机生产系统中特别使用的一种生物投入品，是一种促进植物生长发育的物质。本研究旨在评价不同频率施用腐殖质液体对山核桃根系生长发育的影响。30%的腐殖液分别于7、14、21、28 d施用。对照处理为施水处理。实验是在巴西RS Pelotas的Embrapa Clima Temperado的温室里用Barton根茎进行的。在移植后280和480天评估以下变量:株高;阀杆直径;叶面积;空气部分的新鲜和干块;主次根长度;新鲜和干燥的块状根;主根的新鲜和干燥块状;次生根的新鲜和干燥块状;和迪克森质量指数。液体腐殖质增加了山核桃砧木次生根的长度，主要是每7天施用一次。因此，生物输入可用于此目的。

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来源期刊

Comunicata Scientiae Agricultural and Biological Sciences-Agricultural and Biological Sciences (all)

CiteScore

0.90

自引率

0.00%

发文量

期刊介绍： The Comunicata Scientiae journal edited by Campus “Profa Cinobelina Elvas” of Federal University of Piauí (Brazil) publishes original articles, scientific notes and review articles (when invited by the editorial board), which present significant importance for Agrarian and Environmental Sciences in Portuguese, Spanish and preferentially, in English.