Modification of canola cultivation conditions in a waterlogging-susceptible subtropical environment

IF 1.5 4区 农林科学 Acta Scientiarum-agronomy Pub Date : 2023-08-22 DOI:10.4025/actasciagron.v45i1.61434
Paulo Eugenio Schaefer, Astor Henrique Nied, Arno Bernardo Heldwein, Genei Antonio Dalmago, Antonio Carlos Pappis, Jorge Alberto de Gouvêa
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Abstract

Waterlogging directly interferes with the production capacity of agricultural crops in response to the morphophysiological changes caused to plants. Since the cultivation of poorly drained soils is traditionally avoided, this study aimed to evaluate the possibility of expanding canola cultivation into waterlogged soils using soil surface drainage and different row spacings in lowland areas of Rio Grande do Sul, Brazil. Treatments consisted of the presence and absence of surface drains at 0.25 m depth and row spacings of 0.17, 0.34, 0.51, and 0.68 m arranged in two-factorial randomized blocks with four replications, in 2018 and 2019. In this study, growth traits, yield components, and the final grain yield of canola were evaluated. The increase in lateral branching in canola plants was found to be directly related to waterlogging and negatively affected yield. The use of drains positively impacted the number of pods per plant, seeds per pod, the 1,000 seeds weight, and grain yield. The more intense waterlogging conditions in 2018 resulted in the highest grain yield and superior production traits were obtained with row spacings between 0.41 and 0.48 m. In the absence of waterlogging, the 0.17 m row spacing was more productive. Canola cultivation can occur in waterlogged soils in the presence of surface drainage and at row spacings ranging from 0.40 to 0.50 m.
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易涝亚热带油菜籽栽培条件的改良
内涝直接影响农作物的生产能力,是对植物形态生理变化的响应。由于传统上避免在排水不良的土壤上种植,本研究旨在评估在巴西南里奥格兰德州低地地区利用土壤表面排水和不同行距将油菜种植扩大到涝渍土壤的可能性。处理包括在2018年和2019年,在0.25 m深度和0.17、0.34、0.51和0.68 m的行距上存在和不存在地表排水沟,排列为二因子随机区,有4个重复。本研究对油菜的生长性状、产量组成和最终籽粒产量进行了评价。油菜侧分枝增加与内涝直接相关,对产量有负面影响。排水沟的使用对单株荚果数、每荚种子数、千粒重和籽粒产量均有积极影响。2018年涝渍条件较强,行距为0.41 ~ 0.48 m时产量最高,生产性状优越。在无内涝条件下,0.17 m行距产量最高。油菜籽种植可以在有地表排水的涝渍土壤中进行,行距为0.40至0.50米。
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来源期刊
CiteScore
2.30
自引率
0.00%
发文量
45
期刊介绍: The journal publishes original articles in all areas of Agronomy, including soil sciences, agricultural entomology, soil fertility and manuring, soil physics, physiology of cultivated plants, phytopathology, phyto-health, phytotechny, genesis, morphology and soil classification, management and conservation of soil, integrated management of plant pests, vegetal improvement, agricultural microbiology, agricultural parasitology, production and processing of seeds.
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