CORM QUALITY OF TARO UNDER IRRIGATION LEVELS AND DIFFERENT SOIL TYPES

Q4 Environmental Science

IRRIGA Pub Date : 2022-12-20 DOI:10.15809/irriga.2022v27n4p812-823

Meiling Li, Angélia Cristina Fernandes Deus, L. Ming, Aline Gonçalves Barbosa

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Abstract

Irrigation amount is an important factor in the development of taro (Colocasia esculenta L. Schott), however, there is little information focus on effects of water scheme on its corm quality under different soil textures. Thus, this study aimed to evaluate the taro corm quality in response to five irrigation levels (20%, 60%, 100%, 140% and 180% ETc - crop water requirement) under three soil textures (clay, sandy clay loam, and sandy soil) in a greenhouse. Results indicated that corm number total (CNt) and corm diameter (CD) of taro decreased with reduced irrigation levels, higher values were detected at 140%ETc and 180%ETc in all soil types. CD and CNt performed better in sandy soil than in other two soils, especially in water scheme lower than 100%ETc. In general, total sugar (TS), reducing sugar (RS), and starch content (SC) of taro corm performed better in higher water regime, except that for protein content (PC). Taro corm had higher TS and SC in sandy soil, while lower PC was observed in the same soil treatment. Overall, higher water level was more beneficial to improve corm quality, and SS could be more suitable for taro cultivation under water stress.

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灌溉水平和不同土壤类型对芋头球茎品质的影响

灌水量是影响芋头生长发育的重要因素，但在不同土壤质地条件下，灌溉方案对芋头球茎质量的影响研究较少。因此，本研究旨在评价温室内3种土壤质地(粘土、砂质粘土壤土和砂质土壤)下5种灌溉水平(20%、60%、100%、140%和180%等作物需水量)对芋头球茎品质的响应。结果表明:灌水水平越低，芋头的玉米总粒数(CNt)和玉米直径(CD)越低，在140%ETc和180%ETc水平均较高;CD和CNt在沙质土壤中的表现优于其他两种土壤，特别是在低于100%等水分方案下。总的来说，高水分条件下芋头的总糖(TS)、还原糖(RS)和淀粉含量(SC)表现较好，但蛋白质含量(PC)表现较差。砂质土壤中芋头的TS和SC较高，而相同土壤处理的PC较低。总体而言，较高的水位更有利于提高玉米品质，SS更适合于水分胁迫下的芋头栽培。

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

IRRIGA Environmental Science-Water Science and Technology

CiteScore

0.70

自引率

0.00%

发文量

期刊介绍： A Revista IRRIGA é destinada a publicar trabalhos originais e que contribuam para o desenvolvimento cientifico da agricultura em português, espanhol, preferivelmente em inglês, nas áreas de Irrigação, Drenagem, Hidrologia, Agrometeorologia, Relações Solo-Água-Planta-Atmosfera e Reuso de Água. IRRIGA is a Scientific Journal edited by Agricultural Science College-UNESP, devoted to the publication of original scientific papers in English or Portuguese or Spanish, within the topics: Irrigation, Drainage, Agrometeorology, Hydrology, Waste Water and Soil-Water-Plant-Atmosphere Relationships.