Response of red clover to deficit irrigation: dry matter yield, populations, and irrigation water use efficiency in southern Chile

López-Olivari, Rafael; Ortega-Klose, Fernando

doi:10.1007/s00271-020-00693-0

Cited by 7 publications

(6 citation statements)

References 40 publications

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“…The effective rooting depth (P e f f ective ) was down to 30 cm (with over 80% of active roots) for the well-watered condition determined through a soil pit at the end of each evaluated season. The experimental site presents a typical temperate climate, and it has been described in detail by López-Olivari and Ortega-Klose [46]. The soil is classified as Temuco series (Andisol, family Typic Hapludands) with a silty loam texture [47].…”

Section: Site Descriptionmentioning

confidence: 99%

“…In the case of IL 3 two pressure-compensating button drippers per plant were used with a discharge of 1.2 L h −1 each (total 2.4 L h −1 ) separated at 0.25 m. The irrigation for IL 1 was calculated based on the concept of the total available soil water (TAW; mm), soil water depletion fraction (p), and readily available soil water (RAW; mm) [28]. A p equal to 0.35 was used [28], and this factor was maintained for the whole growing season [46,[48][49][50]. The irrigation events were performed when 35% of TAW was depleted from the effective rooting zone.…”

Section: Deficit Irrigation Treatments and Irrigation Managementmentioning

confidence: 99%

“…All readings were recorded in 15 min intervals using three different dataloggers (Em50 solar datalogger, METER Group, Inc., Pullman, WA, USA). Before installing the sensors on the soil of varying irrigation strategies, all of the sensors were calibrated externally on an undisturbed soil cube removed from the experimental site following the method proposed by López-Olivari and Ortega-Klose [46]. Furthermore, the volumetric soil water content at the soil surface layer (0-10 cm depth) was measured next to the soil heat flux plates located in-row and between-row using another set of two FDR TEROS 10 probes, where the data were recorded in 15 min intervals in a datalogger (ZL-6 solar datalogger, METER Group, Inc., Pullman, WA, USA) located in each evaluated irrigation conditions (Figure 1).…”

Section: Soil Moisture and Plant Measurements 231 Soil Moisture Monit...mentioning

confidence: 99%

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Site-Specific Evaluation of Canopy Resistance Models for Estimating Evapotranspiration over a Drip-Irrigated Potato Crop in Southern Chile under Water-Limited Conditions

López-Olivari

Fuentes

Poblete-Echeverría

et al. 2022

Water

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The evapotranspiration () process is an essential component in many agricultural water management systems, and its estimation is even more determinant when crops are grown under water-limited environments. The traditional canopy resistance () approaches were evaluated to simulate potato evapotranspiration () using the original Penman–Monteith equation under different irrigation levels. A field study was carried out on a drip-irrigated potato crop (var. Puyehue INIA) located in the Research Center Carillanca (INIA), La Araucanía Region, Chile (38°41′ S, 72°24′ W, 188 m above sea level) during the 2018/2019 and 2019/2020 growing seasons. The different irrigation levels were full irrigation (), 75% of (), and 60% of (). The soil water content, morphological, physiological, meteorological, and micrometeorological variables were measured to calculate the different approaches and estimate ET for both growing evaluated seasons. The final values of estimated were compared to the soil water balance method (). The use of amphistomatous (LA) and hypostomatous (LH) approaches are the best alternative to estimate the on potato crops. The best estimation of ET was found for with an overestimation of 0.6% for , 7.0% for , and 13.0% for , while for with underestimations of 12.0, 11.0 and 31.0% for , , and , respectively. The lowest average values of root mean square error (RMSE), mean absolute error (MAE), and index of agreement (d) were observed for in both and conditions, with values of 4.4 and 3.2 mm, 3.2 and 2.5 mm, and 0.82 and 0.87, respectively. More investigation is necessary on the plasticity of the morphological features of potato leaves and canopy geometry, as the stomatal water vapor flowing on the canopy surface could be affected, which is a key factor in the canopy resistance model for accurate estimation under soil-water-limited conditions.

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Section: Site Descriptionmentioning

confidence: 99%

Section: Deficit Irrigation Treatments and Irrigation Managementmentioning

confidence: 99%

Section: Soil Moisture and Plant Measurements 231 Soil Moisture Monit...mentioning

confidence: 99%

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Site-Specific Evaluation of Canopy Resistance Models for Estimating Evapotranspiration over a Drip-Irrigated Potato Crop in Southern Chile under Water-Limited Conditions

López-Olivari

Fuentes

Poblete-Echeverría

et al. 2022

Water

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“…Under these conditions, the introduction and evaluation of species or cultivars to extend the production period and increase productivity under rain-fed environments [43] is a first strategy to increase livestock productivity. For those with irrigation, strategies to improve water productivity to optimize forage production are documented [66,67].…”

Section: Chances Of Adopting New Speciesmentioning

confidence: 99%

Are Chilean Pasture Seed End-Users Adopting New Species? Trends and Joinpoint Regression Analysis of the Last 19 Years of Seed Imports

2021

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Pastures are important for the agricultural sector as forage, recreational and sports systems. The Chilean pasture seed market is highly dependent on introduced genetics; however, the effect of climate change and market conditions can modify pasture options. The objective of this study was to quantify changes of the pasture seeds sown by Chilean end-users, as metric tons (Mt) or proportion of the total (PT), based on 19 years of imported seed. The Mann–Kendall test and joinpoint regression analysis were used to estimate the overall trends and the average annual percent change (AAPC) for the whole period, respectively. The total imported Mt had an increasing trend and AAPC (+5.7%), wherein a large PT corresponded to ryegrasses (Lolium spp.) (0.681), with increasing trends for Mt and PT. Clovers (Trifolium spp.) had decreasing trends and AAPC (−2.9% for Mt and −9.6% for PT). For PT, the main species was perennial ryegrass (L. perenne L.) (0.357), with increasing trends for Mt. As Mt, a positive AAPC was found for plantain (P. lanceolata L.) (+17.4%) and chicory (C. intybus L.) (+63.2%). Over a period of 19 years, based on Mt but not PT, Chilean end-users have been adopting new pasture species with a decreasing use of Trifolium spp.

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“…and/or perennial ryegrass (Lolium perenne L.) for hay, haylage, silage or grazing (Amdahl et al, 2016;Ergon et al, 2019;Naydenova and Vasileva, 2019;Moloney et al, 2020;Egan et al, 2021). This species is known to cope well in a wide range of soil types, pH levels, and environmental and management conditions (Surmen et al, 2013;Ortega et al, 2014;Chmelikova et al, 2015;Tucak et al, 2019;López Olivari and Ortega Klose, 2020). Red clover is a short-lived perennial and in a temperate climate of Southeast Europe its production normally persists from two to four years with few cuts.…”

Section: Introductionmentioning

confidence: 99%

Changes in Agronomic and Forage Nutritive Values of Red Clover in Response to Different Development Stage

Tucak¹,

Čupić²,

Horvat³

et al. 2023

RAR

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Red clover (Trifolium pratense L.) is the second most important cultivated perennial forage legume used as a fodder for livestock. Agronomic and forage quality traits of red clover are dependent on various factors, including optimal phenological stage for cutting in order to obtain forage with high nutritive value and yield. Three different development stages (full budding, beginning of flowering, full flowering) of two red clover genotypes were examined in order to determine changes in agronomic and forage nutritive values. The stage of plant development at the time of cutting significantly affected yields and forage nutritive values of red clover compared to the choice of cultivar. Forage cut at full flowering resulted in the highest values of green mass, dry matter yield and crude protein yield and plant height, however the forage quality with the plant maturation rapidly decreased. The correlations between the investigated traits confirmed a negative relationship between yields and forage nutritive quality.

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Response of red clover to deficit irrigation: dry matter yield, populations, and irrigation water use efficiency in southern Chile

Cited by 7 publications

References 40 publications

Site-Specific Evaluation of Canopy Resistance Models for Estimating Evapotranspiration over a Drip-Irrigated Potato Crop in Southern Chile under Water-Limited Conditions

Site-Specific Evaluation of Canopy Resistance Models for Estimating Evapotranspiration over a Drip-Irrigated Potato Crop in Southern Chile under Water-Limited Conditions

Are Chilean Pasture Seed End-Users Adopting New Species? Trends and Joinpoint Regression Analysis of the Last 19 Years of Seed Imports

Changes in Agronomic and Forage Nutritive Values of Red Clover in Response to Different Development Stage

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