Effect of scheduling of drip irrigation on growth, yield and water use efficiency of turmeric (Curcuma longa L.) var. CO 2

Chitra, R.; Havaraddi, R M; Subramanian, S.; Suresh, J.

doi:10.25081/josac.2017.v26.i1.801

Cited by 11 publications

(4 citation statements)

References 4 publications

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“…In addition, studies have shown that radiation requirements in ginger and turmeric vary across the different growing stages. In general, plants benefit from shade during early field establishment but can make use of additional light and warmer temperatures for photosynthesis as they grow and produce more shoots and rhizomes [44,45].…”

Section: Discussionmentioning

confidence: 99%

Strategies to Reduce Radiation Stress in Open-Field Ginger and Turmeric Production

et al. 2022

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Excess solar radiation can negatively affect growth and rhizome yield of ginger (Zingiber officinale) and turmeric (Curcuma longa) plants. Thus, the objective of this study was to evaluate the effect of 60% shade nets (Experiment 1) as well as white and red kaolin sprays during two production stages (early establishment vs. entire cycle) (Experiment 2) on field-grown ginger and turmeric plants. In Experiment 1, plants were propagated from seed rhizomes (R) or second-generation rhizomes from tissue-cultured plants (2GR), while only R were used in Experiment 2. There were no differences in rhizome yield in response to shade in Experiment 1, with mean values of 644 and 692 g in ginger and turmeric, respectively. Overall, 2GR ginger plants produced a higher rhizome yield (880 g) than R plants (425 g), but no yield differences were measured in turmeric. In Experiment 2, for both species and regardless of kaolin color, sprays applied during the entire cycle increased photosynthesis and stomatal conductance and reduced leaf temperature and transpiration compared to control. Rhizome yield was also up to 87% higher in ginger and 47% higher in turmeric plants sprayed with kaolin. Spraying plants with white kaolin during the early season establishment of these crops can be an effective strategy to reduce radiation stress for open-field production.

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Section: Discussionmentioning

confidence: 99%

Strategies to Reduce Radiation Stress in Open-Field Ginger and Turmeric Production

et al. 2022

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“…Drip irrigation may increase water application efficiency and decreases water losses [2]. Further, water use efficiency and plant growth (the number of leaves, leaf area, plant height, and matter production) increases significantly with drip irrigation compared to flood irrigation [3]. In another study, subsurface drip irrigation treatments had significantly increased yield; improved crop quality; reduced water application; and reduced agronomic costs for weed control, fertilization, and tillage [4].…”

Section: Introductionmentioning

confidence: 97%

Testing Novel New Drip Emitter with Variable Diameters for a Variable Rate Drip Irrigation

2021

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This research presents a new variable rate drip irrigation (VRDI) emitter design that can monitor individual water drops. Conventional drip systems cannot monitor the individual water flow rate per emitter. Application uniformity for conventional drip emitters can be decreased by clogged emitters, irregular emitter orifices, and decreases in pressure. A VRDI emitter can overcome the irrigation challenges in the field by increasing water application uniformity for each plant and reducing water losses. Flow rate is affected by the diameter of the delivery pipe and the pressure of the irrigation delivery system. This study compares the volumetric water flow rate for conventional drip emitters and new VRDI emitters with variable diameters inner (1 mm, 1.2 mm, 1.4 mm, and 1.6 mm) and outside (3 mm, 3.5 mm, 4 mm, and 4.5 mm) with three pressures (34 kPa, 69 kPa, and 103 kPa). The tests revealed that the new VRDI emitter had flow rates that increased as the operating pressure increased similar to a conventional drip tube. The flow rate was slightly increased in the VRDI with pressure, but even this increase did not show large changes in the flow rate. The flow rate of the conventional drip tube was 88% larger than the VRDI emitter for all pressures (p < 0.05). However, operating pressure did not affect the drop sizes at the VRDI emitter, but the generalized linear mixed models (GLM) results show that volume per drop was impacted by the outside diameter of the VRDI outlet (p < 0.05). The interaction between the inner and outside diameter was also significant at p < 0.01, and the interaction between outside diameter and pressure was statistically significant at p < 0.01. The electronic components used to control our VRDI emitter are readily compatible with off-the-shelf data telemetry solutions; thus, each emitter could be controlled remotely and relay data to a centralized data repository or decision-maker, and a plurality of these emitters could be used to enable full-field scale VRDI.

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“…Drip irrigation has high efficiency and reduces water losses [2]. Chitra et al [3] studied the effect of drip irrigation on water use efficiency, plant growth, and yield of turmeric compared with flood irrigation. They found significant increases in water use efficiency and plant growth (number of leaves, leaf area, plant height, and matter production).…”

Section: Introduction 1backgroundmentioning

confidence: 99%

A Variable Rate Drip Irrigation Prototype for Precision Irrigation

et al. 2021

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A new Variable Rate Drip Irrigation (VRDI) emitter that monitors individual water drops was designed, built, and tested. This new emitter controllers water application directly by monitoring the volume applied in contrast to uniform drip irrigation systems that control water application indirectly by pressure compensation and operational times. Prior approaches assumed irrigation volumes based on flow rates and time and typically did not verify the applied amount of water applied at each water outlet. The new VRDI emitter self-monitors the total volume of water applied and halts the flow once the desired total water application has been achieved. This study performed a test for a new VRDI emitter design with two inner diameters of 0.11 cm and 0.12 cm and two outer diameters 0.3 cm and 0.35 cm compared to a commercial drip emitter. Laboratory tests verify that the integrated volume measurements of the VRDI system are independent of pressure. Conversely, the flow rates of the commercial pressure-compensated drip lines were not independent of pressure. These results demonstrate that this form of VRDI is technically feasible and is shown to be energy efficient, requiring lower system operating pressures than pressure-compensated lines. The VRDI system can reduce water consumption and related water costs.

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Effect of scheduling of drip irrigation on growth, yield and water use efficiency of turmeric (Curcuma longa L.) var. CO 2

Cited by 11 publications

References 4 publications

Strategies to Reduce Radiation Stress in Open-Field Ginger and Turmeric Production

Strategies to Reduce Radiation Stress in Open-Field Ginger and Turmeric Production

Testing Novel New Drip Emitter with Variable Diameters for a Variable Rate Drip Irrigation

A Variable Rate Drip Irrigation Prototype for Precision Irrigation

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