Abstract
ABSTRACT The objective of this study was to evaluate the influence of leaching fraction on the biometric and production characteristics and technological quality of the juice of sugarcane varieties grown in saline soil in the Brazilian semiarid region. The experimental design was in randomized blocks, with three repetitions, in a 2 × 3 × 3 factorial scheme, corresponding to two sugarcane cultivation cycles: plant cane and ratoon cane; three sugarcane varieties: RB72454, SP943206 and VAT90212; and, three leaching fractions of irrigation water: 0; 9.1; and 16.6%. Number of living leaves, number of internodes, leaf area, stem diameter, plant height, number of tillers, yield, total soluble solids content (°Brix), percentage of industrial fiber, juice purity, juice Pol%, cane Pol% and total recoverable sugar were evaluated. At the end of the two crop cycles, water use efficiency was determined. The varieties SP943206 and VAT90212 showed higher yield under leaching fraction of irrigation water of 9.1% in both cycles, and higher water use efficiency values were observed for the variety VAT90212. Application of leaching fractions to reduce soil salinity does not promote changes in the technological quality of the sugarcane varieties RB72454, SP943206 and VAT90212.
Highlights
Material and MethodsThe concentration of salts in the soil solution directly affects the development and yield of crops in various parts of the globe and constitutes one of the most relevant causes of environmental degradation (Safdar et al, 2019)
This result may be associated with the leaching fractions provided by treatments with irrigation water depths above 100% ETc, which tend to reduce the concentration of salts in the root zone
This type of management is used in salinized soils because, according to Targino et al (2017), soil salinity can cause reduction in the plant’s ability to absorb water, limiting its morphological formation and the physiological and biochemical processes involved in its growth
Summary
Material and MethodsThe concentration of salts in the soil solution directly affects the development and yield of crops in various parts of the globe and constitutes one of the most relevant causes of environmental degradation (Safdar et al, 2019). In the semiarid region of Brazil, especially in the SubMiddle region of the São Francisco Valley, the agriculture practiced is characterized by the intensive use of the soil with irrigated crops. Among the crops of economic importance, sugarcane stands out with high water demand (12,000 m3 ha-1 year-1), which is supplied by the practice of full irrigation throughout the agricultural season (ANA, 2019). It is a crop that demands large amount of water during its production cycle, consuming between 1,500 and 2,000 mm per annual cycle to produce around 100 to 150 Mg ha-1 (Doorenbos & Kassam, 1979), which represents a high water demand for regions such as the Sub-Middle of the São Francisco Valley, with mean annual precipitation between 400 and 550 mm (Pereira et al, 2003)
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Revista Brasileira de Engenharia Agrícola e Ambiental
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
