Sprinkler irrigation in lowland rice: Crop yield and its components as a function of water availability in different phenological phases

Pinto, Marília Alves Brito; Parfitt, J. M. B.; Timm, Luís Carlos; Faria, Lessandro Coll; Concenço, Germani; Stumpf, Lizete; Nörenberg, Bernardo Gomes

doi:10.1016/j.fcr.2020.107714

Cited by 33 publications

(23 citation statements)

References 16 publications

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“…For that, the plots were not irrigated again until soil water tension reached 20 kPa. At this water tension, a new 7 cm water layer was established and maintained for three days, starting a new soil drying cycle, always having the soil water tension of 20 kPa as the threshold for reflooding (Pinto et al, 2020). AWD cycles were repeated until ripening begun.…”

Section: Experimental Design and Managementmentioning

confidence: 99%

Contribution For Improvement Of Rice Breeding Programs Through Morphoanatomical Traits

Concenço

Brito²,

Fagundes³

et al. 2022

JAS

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Breeding programs aim to increase grain yield and quality through selection oriented mostly by morphological and productive traits. Although morphoanatomical traits are preponderant for plant performance, they are usually time-consuming, demanding specific equipment and trained personnel. The aim of the study is to establish relationships among morphological, micromorphological and anatomical traits of rice genotypes, to support rice breeders in choosing variables to be assessed in the search for superior rice genotypes. We assessed morphological (2nd leaf and root lengths, tiller and root number), micromorphological (vein density, intervein distance, stomatal density and opening width) and anatomical (area of sclerenchyma, xylem and phloem vessels, and percentage of aerenchyma) traits. Root number and length, area of sclerenchyma and xylem and phloem vessels are proposed to be the most efficient traits to be assessed in detailed studies aiming to identify superior genotypes in rice breeding programs, from the morphophysiological point of view.

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Section: Experimental Design and Managementmentioning

confidence: 99%

Contribution For Improvement Of Rice Breeding Programs Through Morphoanatomical Traits

Concenço

Brito²,

Fagundes³

et al. 2022

JAS

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“…For uniform and fast drainage, a perforated 25 mm PVC pipe with 70 cm long (5 cm higher than the height of the tank wall) were installed in the center of each tank in order to avoid the formation of water pockets into soil during application of the intermittent irrigation cycles, standardizing the drainage procedures. Water re-entry into the system after a drainage cycle occurred when the watermark sensors of the plot indicated 20 kPa of soil water tension (Pinto et al 2016;Pinto et al 2020).…”

Section: Facility Structure and Measured Phenotypic Traitsmentioning

confidence: 99%

Genetics components of rice root architecture and carbon isotopic fractionation parameters: a tracer for breeding in a water-saving irrigation management

Brito

Concenço

Costa

et al. 2021

J. Crop Sci. Biotechnol.

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Phenotyping is the major bottleneck in the effort to develop varieties of rice (Oryza sativa L) suitable for grow under a water saving irrigation management, such as alternate wetting and drying irrigation technique (AWD). In order to analyze if the genotypic variability for carbon isotope discrimination (CID) in rice leaves could be used as a relatively high-throughput tracer to early select superior genotypes highlighting improved root architecture traits when submitted to AWD, a set of twenty varieties grown under semi-natural conditions were submitted to two water irrigation regimes, continuous ooding (CF) and AWD cycles. Coe cients of genetic variance ( π2 g) obtained for root architecture, micro-morphological and physiological traits were signi cant for all of them regardless of adopted irrigation system, except to mean root diameter. The three signi cant principal components (PCs) with eigenvalue > 1, explain the most of the total variation across cycles and water regimes. For most of analyzed traits, the values of heritability coe cients were higher regardless of adopted irrigation management and trait category; for CID, the magnitudes of broad heritability at individual level (greater than 0.80) were similar in the two irrigation techniques, evidencing that the success of selection is independent of irrigation management.The higher CID values after three AWD cycles are associated to varieties with higher total root length and volume. To our knowledge, this is the rst study demonstrating the potential application of CID as tracer to select root architecture traits in rice when water-saving irrigation management are of concern.

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“…The regulation for the use of irrigation water developed by [14] comprehensive balance methodology involved carrying out a system diagnosis, making tactical plans, monitor water use, and improving asset management. Besides, the efficient use of water [15] through utilizing a sprinkler irrigation system for planting has been successfully carried out for rice cultivation in paddy fields. The development of an internet-based smart irrigation system with the use of the Arduino IDE software has also been implemented [16].…”

Section: Data Testingmentioning

confidence: 99%

Implementation of Water Debit Measurement Using Microcontroller-Connected Flow Meters

Dalle¹,

Tamjidi²,

Syafruddin³

2020

TEM Journal

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This research was conducted to measure water flow by implementing the Flow Meter tool. This was connected to a microcontroller and monitored through the website. In addition, the research was performed in stages, including (1) problem identification; (2) data collection; (3) hardware and software analysis, design, as well as website interfaces; (4) implementation and testing; and (5) concluding the development of hardware and software created. The results indicate the successful implementation of a water flow measurement prototype. This produced real-time data, updated every minute and displayed the required information on a website for direct monitoring. The study outcome is expected to be directly applied in dam or actual irrigation flow, and monitored on both website media and Android. Therefore, further research is required.

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Sprinkler irrigation in lowland rice: Crop yield and its components as a function of water availability in different phenological phases

Cited by 33 publications

References 16 publications

Contribution For Improvement Of Rice Breeding Programs Through Morphoanatomical Traits

Contribution For Improvement Of Rice Breeding Programs Through Morphoanatomical Traits

Genetics components of rice root architecture and carbon isotopic fractionation parameters: a tracer for breeding in a water-saving irrigation management

Implementation of Water Debit Measurement Using Microcontroller-Connected Flow Meters

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