Plant growth regulator on micro-sprinkler for mango `Palmer’ floral induction in Brazilian Semiarid

Q3 Agricultural and Biological Sciences

Comunicata Scientiae Pub Date : 2023-06-19 DOI:10.14295/cs.v14.3946

W. L. Simões, Kalline Mendes Ferreira, Jucicléia Soares da Silva, Alessandro Carlos Mesquita, Maria Aparecida Do Carmo Mouco, Vinicius Gonçalves Torres Junior, Kaio Vinicius Fernandes Barbosa, Yuri Rafael Alves Sobral

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Abstract

Application of the plant growth regulator paclobutrazol (PBZ) to aid mango floral induction has been widely performed by mango producers. However, its application has been done manually, resulting in low uniformity of application and losses with labor. The objective of this study was to adjust the PBZ dose to be applied via micro-sprinkler system for floral induction, indicating an efficient management of ‘Palmer’ mango in the Brazilian semiarid. The experiment was conducted at Saúde Farm, located in Petrolina-PE, Brazil. The experimental design used was randomized blocks, with five doses of PBZ, applied via irrigation system (T1 - 0.56; T2 - 1.12; T3 -1.68; T4 - 2.24; and T5 - 2.80 g a.i. linear m-1 canopy) and a conventionally applied dose (T0 - 2.80 g a.i. linear m-1 of canopy, manually applied broadcast), with four replicates. The variables analyzed were: photosynthesis rate, stomatal conductance, transpiration, leaf temperature, number and length of panicles, number of fruits per plant, average fruit weight, yield, pulp firmness, titratable acidity and total soluble solids in the fruits. At the conventionally applied dose (2.8 g a.i. linear m-1 of canopy), PBZ application via micro-sprinkler irrigation system proved to be the most efficient way to reduce photosynthesis rate, stomatal conductance and transpiration. PBZ applied via micro-sprinkler irrigation system at a dose of 0.56 g a.i. linear m-1 of canopy promotes greater number of panicles and yield in ‘Palmer’ mango.

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植物生长调节剂对巴西半干旱地区芒果“Palmer”花诱导的影响

植物生长调节剂多效唑(paclobutrazol, PBZ)用于芒果诱导花已被芒果生产商广泛应用。然而，它的应用一直是手工完成的，造成了应用的均匀性低和人工损失。本研究的目的是通过微喷淋系统调整PBZ的剂量，以诱导开花，表明在巴西半干旱地区对“Palmer”芒果的有效管理。实验在巴西Petrolina-PE的Saúde农场进行。试验设计采用随机分组，采用5个剂量的PBZ，通过灌溉系统施用(T1 - 0.56;T2 - 1.12;T3 -1.68;T4 - 2.24;T5 - 2.80 g(线性m-1冠层)和常规剂量(T0 - 2.80 g a.i.线性m-1冠层，手动施加广播)，共4个重复。分析的变量为:光合速率、气孔导度、蒸腾作用、叶温、穗数和穗长、单株果数、平均果重、产量、果肉硬度、可滴定酸度和果实中总可溶性固形物。在常规施用剂量(2.8 g a.i.线性m-1冠层)下，通过微喷灌系统施用PBZ是降低光合速率、气孔导度和蒸腾的最有效方式。通过微喷灌系统施用PBZ，剂量为0.56 g a.i.线性m-1冠层，可促进' Palmer '芒果的穗数和产量增加。

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

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.