WATER USE EFFICIENCY AND YIELD OF BROCCOLI CULTIVATED UNDER NO-TILLAGE WITH DIFFERENT TYPES OF SOIL COVER STRAW AND IRRIGATION SYSTEMS

Q4 Environmental Science

IRRIGA Pub Date : 2022-12-20 DOI:10.15809/irriga.2022v27n4p685-699

Amilcar Servín Niz, F. C. D. Oliveira, A. C. D. S. Almeida, L. O. Geisenhoff, R. Jordan, Modesto Osmar da Silva Oviedo

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Abstract

This study aimed to evaluate the water use efficiency and yield of broccoli, irrigated by surface and subsurface drip and cultivated with no-till vegetable system (NTVS), using different species of cover plants for straw formation. The experimental design was completely randomized, in a 4 x 2 factorial arrangement (4 soil covers and 2 types of drip irrigation: surface and subsurface). The treatments related to the cultivation system were: control treatment, cultivated under conventional tillage and uncovered soil (CT), and three treatments cultivated in NTVS varying the residual straw species used as soil cover, namely: straw from intercropping of Crotalaria ochroleuca and Brachiaria ruziziensis (NT1), straw from only C. ochroleuca (NT2) and straw from only B. ruziziensis (NT3). Treatments with NTVS obtained yield levels higher than or similar to that of the control treatment. NT1, with straw from the intercropping of C. ochroleuca and B. ruziziensis, stood out with a 27% increase in marketable yield of inflorescence (18.68 t ha-1) and higher water use efficiency (17.57 kg m-3), being 54% more efficient than the treatment with conventional tillage.

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不同土壤覆盖、秸秆和灌溉方式下免耕西兰花水分利用效率及产量

本研究旨在评估西兰花的水分利用效率和产量，西兰花采用地表和地下滴灌，采用免耕蔬菜系统（NTVS）栽培，使用不同种类的覆盖植物进行秸秆形成。实验设计是完全随机的，采用4×2因子安排（4种土壤覆盖和2种类型的滴灌：地表和地下）。与栽培体系相关的处理是：对照处理，常规耕作和裸土栽培（CT），以及在NTVS中栽培的三个不同残茬秸秆作为土壤覆盖物的处理，仅来自C.ochreuca（NT2）的秸秆和仅来自B.ruziziensis（NT3）的秸秆。NTVS处理获得的产量水平高于或类似于对照处理。NT1与C.ochloruca和B.ruziziensis间作秸秆相比，显著提高了27%的花序市场产量（18.68t ha-1）和17.57kg m-3的水分利用效率，比常规耕作处理提高了54%。

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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.