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Tirado-Corbalá Rebecca
Agro-Environmental Sciences Department, University of Puerto Rico-Mayagüez, Box 9000, Mayagüez, PR 00681, USA

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Journal article
Published: 18 May 2020 in Horticulturae
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Sweet oranges in Puerto Rico and other citrus-producing areas in the world have been greatly affected by the Huanglongbing disease (HLB). Historically, most of Puerto Rico’s citrus production has been located from 0–600 m above sea level, where fruit acquire a desirable color and flavor due to climatic conditions. However, higher populations of the disease vector Diaphorina citri Kuwayama have been reported at these elevations in Puerto Rico. Although only 6.4% of the land area is located above 600 m, it is composed mainly of environmentally sensitive or non-arable land where Inceptisols are the dominant soil order. For that reason, ‘Marr’s Early’ and ‘Pera’ sweet orange (Citrus sinensis) scions grafted on ‘Carrizo’, ‘HRS 802’, and ‘HRS 812’ rootstocks were planted in Alonso clay series Inceptisol (Oxic Humudepts) at 649 m in 2010. Tree growth parameters (height, diameter, canopy volume) and yield efficiency were measured. Fruit quality was determined from juice content (%), total soluble solids [°Brix], and pH. Leaf tissue analyses showed an optimum range for Ca, Mg, Na, P, B, Cu, and Zn, an indicator of tree health. A few were high (i.e., N and P) or in excess (i.e., Fe), but no clear connection to specific scions or rootstocks could be established. Tree height, tree diameter, fruit production, and juice content were higher in both sweet oranges grafted on ‘HRS 802’ compared with those on ‘HRS 812’ and ‘Carrizo’. Therefore, ‘HRS 802’ rootstock can be recommended to local farmers growing sweet oranges in Alonso series soil.

ACS Style

Rebecca Tirado-Corbalá; Alejandro Segarra-Carmona; Manuel Matos-Rodríguez; Dania Rivera-Ocasio; Consuelo Estévez de Jensen; Jeniffer Pagán. Assessment of Two Sweet Orange Cultivars Grafted on Selected Rootstocks Grown on an Inceptisol in Puerto Rico. Horticulturae 2020, 6, 30 .

AMA Style

Rebecca Tirado-Corbalá, Alejandro Segarra-Carmona, Manuel Matos-Rodríguez, Dania Rivera-Ocasio, Consuelo Estévez de Jensen, Jeniffer Pagán. Assessment of Two Sweet Orange Cultivars Grafted on Selected Rootstocks Grown on an Inceptisol in Puerto Rico. Horticulturae. 2020; 6 (2):30.

Chicago/Turabian Style

Rebecca Tirado-Corbalá; Alejandro Segarra-Carmona; Manuel Matos-Rodríguez; Dania Rivera-Ocasio; Consuelo Estévez de Jensen; Jeniffer Pagán. 2020. "Assessment of Two Sweet Orange Cultivars Grafted on Selected Rootstocks Grown on an Inceptisol in Puerto Rico." Horticulturae 6, no. 2: 30.

Journal article
Published: 12 December 2019 in Horticulturae
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Knowledge of carbon (C) and nitrogen (N) dynamics under different irrigation practices in pomegranate orchards is novel and essential to develop sustainable production systems. The aim of this research was to determine the effect of high-frequency drip irrigation and different rates of N fertilizer on C and N distribution in the soil and N uptake by pomegranate fruit and leaves. The main treatments were surface drip irrigation (DI) and subsurface drip irrigation (SDI), and the sub-treatments used were three initial N rates (N1, N2, and N3). As trees grew larger, the N application rate increased. From 2013–2015, trees received the following rates of N: 62–113 (N1), 166–263 (N2), or 244–342 kg/ha (N3). Soil and leaf total C (TC) and N (TN), soil dissolved organic C (DOC), soil nitrate (NO3−), and total N uptake by fruit were evaluated between 2012 and 2015. Soil samples were collected to 120 cm depth at 15 cm increments. DI resulted in higher concentrations of TN, TC, NO3−, and DOC in the upper 75 cm depth than SDI. The N3 treatment resulted in higher concentrations of TN, TC, NO3−, and DOC under both DI and SDI. Neither DI nor SDI at the N1 or N2 levels increased TN and NO3− concentrations at 105–120 cm soil depth, indicating reduced leaching risk using high-frequency drip irrigation. Higher N uptake by fruit was observed in SDI than in DI in 2014 and 2015, and in N2 and N3 treatments compared with N1 in 2013 and 2014. The data indicate that the application rate at 166–263 kg/ha (N2) provided sufficient N for a 4–6-year-old pomegranate orchard and that high-frequency SDI is a promising technology for achieving higher N use efficiency and minimizing leaching loss of NO3− and DOC.

ACS Style

Rebecca Tirado-Corbalá; Suduan Gao; James E. Ayars; Dong Wang; Claude J. Phene; Rebecca C. Phene. Carbon and Nitrogen Dynamics Affected by Drip Irrigation Methods and Fertilization Practices in a Pomegranate Orchard. Horticulturae 2019, 5, 77 .

AMA Style

Rebecca Tirado-Corbalá, Suduan Gao, James E. Ayars, Dong Wang, Claude J. Phene, Rebecca C. Phene. Carbon and Nitrogen Dynamics Affected by Drip Irrigation Methods and Fertilization Practices in a Pomegranate Orchard. Horticulturae. 2019; 5 (4):77.

Chicago/Turabian Style

Rebecca Tirado-Corbalá; Suduan Gao; James E. Ayars; Dong Wang; Claude J. Phene; Rebecca C. Phene. 2019. "Carbon and Nitrogen Dynamics Affected by Drip Irrigation Methods and Fertilization Practices in a Pomegranate Orchard." Horticulturae 5, no. 4: 77.

Journal article
Published: 15 March 2019 in Geoderma Regional
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Synthetic gypsum, a by-product of electricity generation, is used as a soil amendment to overcome water ponding, improve soil and water quality, improve field conditions to support farm equipment, and reduce the variability of crop yield in no-till fields by improving hydrology. Gypsum is a source of soluble calcium (Ca) that improves physical properties of the soil by promoting clay aggregation, thereby increasing water infiltration rates and movement through the soil profile. Undisturbed soil samples from Brookston and Celina soils in Ohio, USA were collected to a depth of 75 cm in agricultural fields treated with gypsum for 0, 4, and 12 years to determine changes in chemical and physical properties. Gypsum applications increased exchangeable Ca and Ca: Mg ratios, and promoted clay flocculation and improved soil structure. Mean weight diameter of aggregates increased with gypsum treatment at most depths in both soils. Micromorphological analysis showed variations in porosity (ɸ), pore size distribution, pore shape and aggregate size related to gypsum treatment, soil, and soil depth. There were no consistent responses to years of gypsum application. Gypsum treated soils had higher porosity than untreated soils in all depths <75 cm and a higher percentage of micropores and mesopores compared to the control. Also, gypsum treated soils had larger aggregates than the control for all soil depths examined. Aggregates <100 μm predominated in the Brookston control soils, and < 200 μm aggregates dominated the Celina control soils. However, there was no prevailing aggregate size for gypsum treated soils. In conclusion, our study found positive effects of gypsum on most properties measured; although, not consistently related to years of gypsum applications to both soils.

ACS Style

Rebecca Tirado-Corbalá; Brian K. Slater; Warren A. Dick; Jerry Bigham; Miguel Muñoz-Muñoz. Gypsum amendment effects on micromorphology and aggregation in no-till Mollisols and Alfisols from western Ohio, USA. Geoderma Regional 2019, 16, e00217 .

AMA Style

Rebecca Tirado-Corbalá, Brian K. Slater, Warren A. Dick, Jerry Bigham, Miguel Muñoz-Muñoz. Gypsum amendment effects on micromorphology and aggregation in no-till Mollisols and Alfisols from western Ohio, USA. Geoderma Regional. 2019; 16 ():e00217.

Chicago/Turabian Style

Rebecca Tirado-Corbalá; Brian K. Slater; Warren A. Dick; Jerry Bigham; Miguel Muñoz-Muñoz. 2019. "Gypsum amendment effects on micromorphology and aggregation in no-till Mollisols and Alfisols from western Ohio, USA." Geoderma Regional 16, no. : e00217.

Journal article
Published: 01 January 2019 in International Journal of Environmental Science and Development
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ACS Style

Suduan Gao; Aileen Hendratna; Zejiang Cai; Yinghua Duan; Ruijun Qin; Tirado-Corbalá Rebecca. Subsurface Drip Irrigation Reduced Nitrous Oxide Emissions in a Pomegranate Orchard. International Journal of Environmental Science and Development 2019, 10, 79 -85.

AMA Style

Suduan Gao, Aileen Hendratna, Zejiang Cai, Yinghua Duan, Ruijun Qin, Tirado-Corbalá Rebecca. Subsurface Drip Irrigation Reduced Nitrous Oxide Emissions in a Pomegranate Orchard. International Journal of Environmental Science and Development. 2019; 10 (3):79-85.

Chicago/Turabian Style

Suduan Gao; Aileen Hendratna; Zejiang Cai; Yinghua Duan; Ruijun Qin; Tirado-Corbalá Rebecca. 2019. "Subsurface Drip Irrigation Reduced Nitrous Oxide Emissions in a Pomegranate Orchard." International Journal of Environmental Science and Development 10, no. 3: 79-85.

Journal article
Published: 16 November 2018 in Soil and Tillage Research
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Management practices influence soil properties in both the seasonal short-term and multi-year long-term. Seasonal changes in soil compaction were assessed at the Ohio Triplett-Van Doren No-Tillage Experimental Plots, which have been operational for more than 55 years. Soil penetration resistance (PR), carbon, and nitrogen were measured from plots under plow tillage (PT), minimum tillage (MT), and no-tillage (NT) management in Hoytville and Wooster, Ohio. Water retention curves (WRC) and pore size distribution (PSD) were evaluated at the Wooster site only. Significant tillage treatment effects on PR were observed at both sites throughout the soil profile, but varied by sampling time. In the silt loam, NT systems showed higher PR than plow treatments until below the plow depth of 20 cm, where the presence of a plow pan was seen under the PT treatment. During the summer and fall these subsurface treatment effects were no longer present. The tillage effects were more pronounced in the silty clay loam soil, where NT plots were more compacted than MT and PT treatments throughout the profile. This was observed in all the spring, summer and fall sampling surveys. There were significant tillage treatment effects (p < 0.05) on PSD at Wooster at the 0–10 and 10–20 cm soil depths. The majority of the pores for all tillage systems occurred in the 0.2–30 μm range, where the largest differences in pore distribution among tillage systems occurred. This allows the no-till treatment at Wooster to retain higher water content at most of the tensions compared with PT and MT. No-till practices increased C and N stock in the top 20 cm in Hoytville, but no differences were observed in Wooster. An historical analysis of organic carbon of the NT Wooster plots showed no significant increase in the top 10 cm from 1993-2013. However, OC did increase in the 10–30 cm depth over that 20 year period.

ACS Style

Tania D. Burgos Hernández; Brian K. Slater; Rebecca Tirado Corbalá; Jared M. Shaffer. Assessment of long-term tillage practices on physical properties of two Ohio soils. Soil and Tillage Research 2018, 186, 270 -279.

AMA Style

Tania D. Burgos Hernández, Brian K. Slater, Rebecca Tirado Corbalá, Jared M. Shaffer. Assessment of long-term tillage practices on physical properties of two Ohio soils. Soil and Tillage Research. 2018; 186 ():270-279.

Chicago/Turabian Style

Tania D. Burgos Hernández; Brian K. Slater; Rebecca Tirado Corbalá; Jared M. Shaffer. 2018. "Assessment of long-term tillage practices on physical properties of two Ohio soils." Soil and Tillage Research 186, no. : 270-279.

Journal article
Published: 06 November 2018 in Horticulturae
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Since Huanglongbing (HLB) disease was detected in 2009 in Puerto Rico, a steady drop in citrus production has been experienced, forcing farmers to abandon their land or switch to other crops. Between 2015 and 2016, we used grafted trees from two experimental orchards (Tahiti lime and Nova mandarin), each on five rootstocks, to collect soil and plant tissue samples from each scion‒rootstock combination to determine soil fertility, tissue nutrient content, and yield. The tree growth parameters (height, diameter, and canopy volume) and efficiency of the two orchards were also measured. These orchards, growing in Coto series (Typic Hapludox), were planted in 2009 and reported as heavily infested with HLB by 2011. Our results showed that soil and tissue samples from the Tahiti lime orchard exhibited benefits for tree growth parameters when grafted on Carrizo and Cleopatra rootstocks. Lower tree mortality (13%) was observed for Tahiti lime grafted on Carrizo, HRS 812, Carrizo and Rough lemon rootstocks, while 25% of the Nova mandarin trees perished on the same rootstocks. Yield was higher for Tahiti lime grafted on Swingle rootstock (35.6 fruit m−3) as compared to the other rootstocks. In general, HLB appears to have caused poor development and low production in the Nova mandarin orchard.

ACS Style

Rebecca Tirado-Corbalá; Dania Rivera-Ocasio; Alejandro Segarra-Carmona; Elvin Román-Paoli; Agenol González. Performance of Two Citrus Species Grafted to Different Rootstocks in the Presence of Huanglongbing Disease in Puerto Rico. Horticulturae 2018, 4, 38 .

AMA Style

Rebecca Tirado-Corbalá, Dania Rivera-Ocasio, Alejandro Segarra-Carmona, Elvin Román-Paoli, Agenol González. Performance of Two Citrus Species Grafted to Different Rootstocks in the Presence of Huanglongbing Disease in Puerto Rico. Horticulturae. 2018; 4 (4):38.

Chicago/Turabian Style

Rebecca Tirado-Corbalá; Dania Rivera-Ocasio; Alejandro Segarra-Carmona; Elvin Román-Paoli; Agenol González. 2018. "Performance of Two Citrus Species Grafted to Different Rootstocks in the Presence of Huanglongbing Disease in Puerto Rico." Horticulturae 4, no. 4: 38.

Journal article
Published: 02 November 2018 in Agronomy
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Knowledge about seasonal and litter bag soil position effects on litter decomposition (k value), mineralization and nitrification rate of annual legumes in Puerto Rico is limited. This study determined dry matter yield (DMY), k value of litter bags placed below and above the soil surface, mineralization and nitrification rates of Lablab purpureus cv. “Rongai” and Mucuna pruriens (Velvet bean) seeded in the wet and dry season in Oxisol soils (Typic Eustrustox). There was an interaction (p < 0.05) for season and legumes on DMY, k value and N content. “Rongai” DMY was higher for the dry than wet season while Velvet bean had an opposite seasonal response. Higher k value occurred in the wet season for legumes, but “Rongai” had higher k than Velvet bean. For both legumes, N content was higher on litter bag placed below-ground in both seasons. However, in the wet season, there was less N in the above ground litter position. Higher inorganic N was observed at 90 days of soil incubation (DOI) suggesting that N was not available prior to 42 DOI. Nitrification rate was higher for “Rongai” at 22 DOI and lower at 42 and 90 DOI for both legumes. Both legumes enhanced inorganic N, but, regardless of season, Rongai supplied nutrients to the soil faster than Velvet bean. “Rongai” because of its higher k value than Velvet bean is recommended for fast growing row or vegetable crops in Puerto Rico.

ACS Style

Rebecca Tirado-Corbalá; Litza Y. López-Ramos; Elide Valencia-Chin; Elvin Román-Paoli. Yield, Decomposition, Mineralization and Nitrification of Annual Legumes in an Oxisol. Agronomy 2018, 8, 244 .

AMA Style

Rebecca Tirado-Corbalá, Litza Y. López-Ramos, Elide Valencia-Chin, Elvin Román-Paoli. Yield, Decomposition, Mineralization and Nitrification of Annual Legumes in an Oxisol. Agronomy. 2018; 8 (11):244.

Chicago/Turabian Style

Rebecca Tirado-Corbalá; Litza Y. López-Ramos; Elide Valencia-Chin; Elvin Román-Paoli. 2018. "Yield, Decomposition, Mineralization and Nitrification of Annual Legumes in an Oxisol." Agronomy 8, no. 11: 244.

Journal article
Published: 30 September 2017 in Hydrology
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A continuous spatio-temporal database of accurate soil moisture (SM) measurements is an important asset for agricultural activities, hydrologic studies, and environmental monitoring. The Advanced Microwave Scanning Radiometer 2 (AMSR2), which was launched in May 2012, has been providing SM data globally with a revisit period of two days. It is imperative to assess the quality of this data before performing any application. Since resources of accurate SM measurements are very limited in Puerto Rico, this research will assess the quality of the AMSR2 data by comparing it with ground-based measurements, as well as perform a downscaling technique to provide a better description of how the sensor perceives the surface soil moisture as it passes over the island. The comparison consisted of the evaluation of the mean error, root mean squared error, and the correlation coefficient. Two downscaling techniques were used, and their performances were studied. The results revealed that AMSR2 products tend to underestimate soil moisture. This is due to the extreme heterogeneous distributions of elevations, vegetation densities, soil types, and weather events on the island. This research provides a comprehensive study on the accuracy and potential of the AMSR2 products over Puerto Rico. Further studies are recommended to improve the AMSR2 products.

ACS Style

Jonathan Nuñez-Olivieri; Jonathan Muñoz-Barreto; Rebecca Tirado-Corbalá; Tarendra Lakhankar; Andmorgan Fisher. Comparison and Downscale of AMSR2 Soil Moisture Products with In Situ Measurements from the SCAN–NRCS Network over Puerto Rico. Hydrology 2017, 4, 46 .

AMA Style

Jonathan Nuñez-Olivieri, Jonathan Muñoz-Barreto, Rebecca Tirado-Corbalá, Tarendra Lakhankar, Andmorgan Fisher. Comparison and Downscale of AMSR2 Soil Moisture Products with In Situ Measurements from the SCAN–NRCS Network over Puerto Rico. Hydrology. 2017; 4 (4):46.

Chicago/Turabian Style

Jonathan Nuñez-Olivieri; Jonathan Muñoz-Barreto; Rebecca Tirado-Corbalá; Tarendra Lakhankar; Andmorgan Fisher. 2017. "Comparison and Downscale of AMSR2 Soil Moisture Products with In Situ Measurements from the SCAN–NRCS Network over Puerto Rico." Hydrology 4, no. 4: 46.

Preprint
Published: 28 September 2017
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A continuous spatio-temporal database of accurate soil moisture (SM) measurements is an important asset for agricultural activities, hydrologic studies, and environmental monitoring. The Advanced Microwave Scanning Radiometer 2 (AMSR2), launched in May 2012, has been providing SM data globally with a revisit period of two days. It is imperative to assess the quality of this data before performing any application. Since resources of accurate SM measurements are very limited in Puerto Rico, this research will assess the quality of the AMSR2 data by comparing with ground-based measurements and perform a downscaling technique to provide a better description of how the sensor perceives the surface soil moisture as it passes over the island. The comparison consisted of the evaluation of the mean error, root mean squared error, and the correlation coefficient. Two downscaling techniques were used and their performances were studied. The results revealed that AMSR2 products tend to underestimate. This is due to the extreme heterogeneous distributions of elevations, vegetation densities, soil types, and weather events on the island. This research provides a comprehensive study on the accuracy and potential of the AMSR2 products over Puerto Rico. Further studies are recommended to improve the AMSR2 products.

ACS Style

Jonathan Nuñez Olivieri; Jonathan Muñoz-Barreto; Rebecca Tirado-Corbala; Tarendra Lakhankar; Andmorgan Fisher. Comparison and Downscale of AMSR2 Soil Moisture Products with In-Situ Measurements from the SCAN-NRCS Network over Puerto Rico. 2017, 1 .

AMA Style

Jonathan Nuñez Olivieri, Jonathan Muñoz-Barreto, Rebecca Tirado-Corbala, Tarendra Lakhankar, Andmorgan Fisher. Comparison and Downscale of AMSR2 Soil Moisture Products with In-Situ Measurements from the SCAN-NRCS Network over Puerto Rico. . 2017; ():1.

Chicago/Turabian Style

Jonathan Nuñez Olivieri; Jonathan Muñoz-Barreto; Rebecca Tirado-Corbala; Tarendra Lakhankar; Andmorgan Fisher. 2017. "Comparison and Downscale of AMSR2 Soil Moisture Products with In-Situ Measurements from the SCAN-NRCS Network over Puerto Rico." , no. : 1.

Journal article
Published: 11 July 2017 in Plants
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Gypsum is an excellent source of Ca and S, both of which are required for crop growth. Large amounts of by-product gypsum [Flue gas desulfurization gypsum-(FGDG)] are produced from coal combustion in the United States, but only 4% is used for agricultural purposes. The objective of this study was to evaluate the effects of (1) untreated, (2) short-term (4-year annual applications of gypsum totaling 6720 kg ha−1), and (3) long-term (12-year annual applications of gypsum totaling 20,200 kg ha−1) on alfalfa (Medicago sativa L.) growth and nutrient uptake, and gypsum movement through soil. The study was conducted in a greenhouse using undisturbed soil columns of two non-sodic soils (Celina silt loam and Brookston loam). Aboveground growth of alfalfa was not affected by gypsum treatments when compared with untreated (p > 0.05). Total root biomass (0–75 cm) for both soils series was significantly increased by gypsum application (p = 0.04), however, increased root growth was restricted to 0–10 cm depth. Soil and plant analyses indicated no unfavorable environmental impact from of the 4-year and 12-year annual application of FGDG. We concluded that under sufficient water supply, by-product gypsum is a viable source of Ca and S for land application that might benefit alfalfa root growth, but has less effect on aboveground alfalfa biomass production. Undisturbed soil columns were a useful adaptation of the lysimeter method that allowed detailed measurements of alfalfa nutrient uptake, root biomass, and yield and nutrient movement in soil.

ACS Style

Rebecca Tirado-Corbalá; Brian K. Slater; Warren A. Dick; Dave Barker. Alfalfa Responses to Gypsum Application Measured Using Undisturbed Soil Columns. Plants 2017, 6, 29 .

AMA Style

Rebecca Tirado-Corbalá, Brian K. Slater, Warren A. Dick, Dave Barker. Alfalfa Responses to Gypsum Application Measured Using Undisturbed Soil Columns. Plants. 2017; 6 (3):29.

Chicago/Turabian Style

Rebecca Tirado-Corbalá; Brian K. Slater; Warren A. Dick; Dave Barker. 2017. "Alfalfa Responses to Gypsum Application Measured Using Undisturbed Soil Columns." Plants 6, no. 3: 29.

Journal article
Published: 24 May 2017 in Agronomy
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High value crop producers in California rely heavily on soil fumigation to control a wide array of soil borne pests including nematodes, pathogens and weeds. Fumigants with broad biocidal activity can affect soil microbial communities that contribute to nutrient cycling and plant nutrient uptake which can impact soil health. It is often thought that soil microbial communities make a relatively rapid recovery following fumigation. However, recently it has been found that repeated application of fumigants over time can have greater and longer lasting impacts on soil microorganisms than single fumigation events. Therefore, the main objective of this study was to determine the effect of long-term repeated application of fumigants on soil microbial communities and compare them with non-fumigated and organic sites. Soil samples were collected from fields in Watsonville, CA. Chronosequence sites were defined by number of years of annual fumigation (yaf) with methyl bromide (15, 26, 33, 39 yaf) at the time of sampling, and representative non-fumigated sites were also included for comparison. Phospholipid fatty acid (PLFA) analysis was used to analyze the samples. The canonical variate analysis showed that microbial communities in sites with a longer history of fumigation (33 and 39 yaf) were similar to one another; however, they differed significantly from 15 yaf site and further analysis concluded that non-fumigated sites were significantly different than fumigated sites. This study showed that the proportion of arbuscular mycorrhizal fungi (AMF) was lower in all fumigated (15, 33 and 39 yaf) sites as compared to their non-fumigated counterparts, which could be a threat to sustainability since AMF plays a major role in soil health and quality.

ACS Style

Sadikshya R. Dangi; Rebecca Tirado-Corbalá; James Gerik; Bradley D. Hanson. Effect of Long-Term Continuous Fumigation on Soil Microbial Communities. Agronomy 2017, 7, 37 .

AMA Style

Sadikshya R. Dangi, Rebecca Tirado-Corbalá, James Gerik, Bradley D. Hanson. Effect of Long-Term Continuous Fumigation on Soil Microbial Communities. Agronomy. 2017; 7 (2):37.

Chicago/Turabian Style

Sadikshya R. Dangi; Rebecca Tirado-Corbalá; James Gerik; Bradley D. Hanson. 2017. "Effect of Long-Term Continuous Fumigation on Soil Microbial Communities." Agronomy 7, no. 2: 37.

Journal article
Published: 19 June 2015 in Agronomy
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Sugarcane has been widely used as a biofuel crop due to its high biological productivity, ease of conversion to ethanol, and its relatively high potential for greenhouse gas reduction and lower environmental impacts relative to other derived biofuels from traditional agronomic crops. In this investigation, we studied four sugarcane cultivars (H-65-7052, H-78-3567, H-86-3792 and H-87-4319) grown on a Hawaiian commercial sugarcane plantation to determine their ability to store and accumulate soil carbon (C) and nitrogen (N) across a 24-month growth cycle on contrasting soil types. The main study objective establish baseline parameters for biofuel production life cycle analyses; sub-objectives included (1) determining which of four main sugarcane cultivars sequestered the most soil C and (2) assessing how soil C sequestration varies among two common Hawaiian soil series (Pulehu-sandy clay loam and Molokai-clay). Soil samples were collected at 20 cm increments to depths of up to 120 cm using hand augers at the three main growth stages (tillering, grand growth, and maturity) from two experimental plots at to observe total carbon (TC), total nitrogen (TN), dissolved organic carbon (DOC) and nitrates (NO−3) using laboratory flash combustion for TC and TN and solution filtering and analysis for DOC and NO−3. Aboveground plant biomass was collected and subsampled to determine lignin and C and N content. This study determined that there was an increase of TC with the advancement of growing stages in the studied four sugarcane cultivars at both soil types (increase in TC of 15–35 kg·m2). Nitrogen accumulation was more variable, and NO−3 (<5 ppm) were insignificant. The C and N accumulation varies in the whole profile based on the ability of the sugarcane cultivar’s roots to explore and grow in the different soil types. For the purpose of storing C in the soil, cultivar H-65-7052 (TC accumulation of ~30 kg·m−2) and H-86-3792 (25 kg·m−2) rather H-78-3567 (15 kg·m−2) and H-87-4319 (20 kg·m−2) appeared to produce more accumulated carbon in both soil types.

ACS Style

Rebecca Tirado-Corbalá; Ray G. Anderson; Dong Wang; James E. Ayars. Soil Carbon and Nitrogen Stocks of Different Hawaiian Sugarcane Cultivars. Agronomy 2015, 5, 239 -261.

AMA Style

Rebecca Tirado-Corbalá, Ray G. Anderson, Dong Wang, James E. Ayars. Soil Carbon and Nitrogen Stocks of Different Hawaiian Sugarcane Cultivars. Agronomy. 2015; 5 (2):239-261.

Chicago/Turabian Style

Rebecca Tirado-Corbalá; Ray G. Anderson; Dong Wang; James E. Ayars. 2015. "Soil Carbon and Nitrogen Stocks of Different Hawaiian Sugarcane Cultivars." Agronomy 5, no. 2: 239-261.