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2021

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Full-Text Articles in Earth Sciences

Yield And Forage Quality In Alfalfa-Weeping Lovegrass Mixtures, H. Laborde, R. E. Brevedan, M. A. Varillas, M. N. Fioretti Aug 2021

Yield And Forage Quality In Alfalfa-Weeping Lovegrass Mixtures, H. Laborde, R. E. Brevedan, M. A. Varillas, M. N. Fioretti

IGC Proceedings (1977-2023)

Little is known about the relative performance of weeping lovegrass in mixtures with alfalfa. Our objective was to compare the productivity and forage quality of monocultures and binary mixtures of the species. Mixtures always gave higher yields than any of the monocultures and the highest was obtained in the mixture with the largest proportion of alfalfa. In the second year weeping lovegrass N concentration in the mixtures were higher than in monoculture. Weeping lovegrass did not affect the alfalfa N concentration. There was not differences in the NDF, for between these species.


Forage Quality Of Mixtures Of Bromus Wildenowii And B. Parodii Influenced By Nitrogen Fertilization Or Alfalfa Interseeding, S. Abarza, R. E. Brevedan, H. Laborde Aug 2021

Forage Quality Of Mixtures Of Bromus Wildenowii And B. Parodii Influenced By Nitrogen Fertilization Or Alfalfa Interseeding, S. Abarza, R. E. Brevedan, H. Laborde

IGC Proceedings (1977-2023)

Under good soil fertility conditions, Bromus wildenowii Kunth and Bromus parodii Covas et Itria are two high producing forage grasses. The objective of this study was to evaluate the effect of nitrogen fertilization or the association with alfalfa (Medicago sativa L) on yield and forage quality of mixtures of both grasses during the establishment year. Nitrogen fertilizer (300 kg ha-1) was broadcasted in three 100 kg N dosis. Nitrogen fertilization or alfalfa intercropping did not increase dry matter yield. Tiller density and crude protein content of grass forage were increased by nitrogen application. Intercropped alfalfa increased N …


Intake And Yield Of Cynodon Nlemfuensis Alone And Associated With Leucaena Leucocephala Grazed By Sheep, J. G. Escobedo-Mex, Luis Ramírez-Avilés, Juan C. Ku-Vera Aug 2021

Intake And Yield Of Cynodon Nlemfuensis Alone And Associated With Leucaena Leucocephala Grazed By Sheep, J. G. Escobedo-Mex, Luis Ramírez-Avilés, Juan C. Ku-Vera

IGC Proceedings (1977-2023)

The objective of the present study was to determine dry matter intake (DMI) and the forage yield of green dry matter (GDM) of star grass (Cynodon nlemfuensis) alone and associated with Leucaena leucocephala cv. Perú grazed by sheep. The experimental treatments were: Systems T1) Star grass alone, and T2) Star grass + L. leucocephala. These treatments were evaluated during three seasons (i.e. Late-rainy, Dry and Rainy seasons). The availability of forage was lower (P < 0.0001) in T1, 2543 kg GDM/ha, than with T2, 3092 kg GDM/ha. Green dry matter in the rainy season was greater (P < 0.0001), with 3910 kg GDM/ha, than in the late-rainy and dry seasons, 2492 and 2052 kg GDM/ha, respectively. DMI was 5.9 and 7.6 g DM/kg of LW 0.75/hour for the T1 and T2, respectively (P < 0.0001). DMI during the rainy season was lower (P < 0.01) than that of the dry and late-rainy seasons, 6.2, 6.4 and 7.5 g DM/kg LW0.75/hour, respectively. The association C. nlemfuensis-L. leucocephala increased the availability of …


Mgrre_Pureoilscouttickets_Mears, Carrie Aka Fields Aka Miers_1_21127000680000, Mgrre Aug 2021

Mgrre_Pureoilscouttickets_Mears, Carrie Aka Fields Aka Miers_1_21127000680000, Mgrre

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No abstract provided.


New Insights Into The Drainage Of Inundated Ice-Wedge Polygons Using Fundamental Hydrologic Principles, Dylan R. Harp, Vitaly A. Zlotnik, Charles J. Abolt, Bob Busey3, Sofia T. Avendaño, Brent D. Newman, Adam L. Atchley, Elchin Jafarov, Cathy J. Wilson, Katrina E. Bennett Aug 2021

New Insights Into The Drainage Of Inundated Ice-Wedge Polygons Using Fundamental Hydrologic Principles, Dylan R. Harp, Vitaly A. Zlotnik, Charles J. Abolt, Bob Busey3, Sofia T. Avendaño, Brent D. Newman, Adam L. Atchley, Elchin Jafarov, Cathy J. Wilson, Katrina E. Bennett

Department of Earth and Atmospheric Sciences: Faculty Publications

The pathways and timing of drainage from the inundated centers of ice-wedge polygons in a warming climate have important implications for carbon flushing, advective heat transport, and transitions from methane to carbon dioxide dominated emissions. Here, we expand on previous research using a recently developed analytical model of drainage from a low-centered polygon. Specifically, we perform (1) a calibration to field data identifying necessary model refinements and (2) a rigorous model sensitivity analysis that expands on previously published indications of polygon drainage characteristics. This research provides intuition on inundated polygon drainage by presenting the first in-depth analysis of drainage within …


Chamoli Disaster: Pronounced Changes In Water Quality And Flood Plains Using Sentinel Data, Sansar Raj Meena, Akshansa Chauhan, Kushanav Bhuyan, Ramesh P. Singh Aug 2021

Chamoli Disaster: Pronounced Changes In Water Quality And Flood Plains Using Sentinel Data, Sansar Raj Meena, Akshansa Chauhan, Kushanav Bhuyan, Ramesh P. Singh

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

The Himalayan rivers are vulnerable to devastating flooding caused by landslides and outbreak of glacial lakes. On 7 February 2021, a deadly disaster occurred near the Rishi Ganga Hydropower Plant in the Rishi Ganga River, killing more than 100 people. During the event, a large volume of debris and broken glacial fragments flooded the Rishi Ganga River and washed away the Rishi Ganga Hydropower plant ongoing project. This study presents the impact of the Chamoli disaster on the water quality of Rishi Ganga River in upstream near Tapovan and Ganga River in downstream near Haridwar through remote sensing data. Five …


Allelopathy Of Panicum Maximum Jacq. Cultivars On Tree And Shrub Forage Legumes: Greenhouse Estimate, A. R. P. Almeida, T. J. D. Rodrigues Aug 2021

Allelopathy Of Panicum Maximum Jacq. Cultivars On Tree And Shrub Forage Legumes: Greenhouse Estimate, A. R. P. Almeida, T. J. D. Rodrigues

IGC Proceedings (1977-2023)

The available information about allelopathic effects of the genus Panicum on tropical forage legumes is scarce and inconclusive. Based on this fact this research was carried out, under greenhouse conditions to evaluate potential allelopathic effects of aqueous extracts (0,10 and 20%) of three cultivars of Panicum maximum Jacq. cv. Mombaça, cv. Aruana and cv. Tanzânia-1 on three forage legumes, Leucaena leucocephala (Lam.) de Wit. (leucaena), Cajanus cajan (L.) Millsp. cv. Kaki (pigeon pea) and Sesbania sesban (L.) Merr. (sesbania) seeking for mixed grasses and legumes pastures. The following characteristics were evaluated: emergence porcentage, speed of germination index, root density, dry …


Tillage Systems In The Establishment Of Pastures In Argentinian Subhumid Area, H. Pagliaricci, C. Saroff, A. Ohanian, T. Pereyra Aug 2021

Tillage Systems In The Establishment Of Pastures In Argentinian Subhumid Area, H. Pagliaricci, C. Saroff, A. Ohanian, T. Pereyra

IGC Proceedings (1977-2023)

The effect of three tillage systems on the number of plants produced and forage production of a pasture the first year of establishment was assessed in this experiment. The components of the pasture were alfalfa (Medicago sativa L.), tall fescue (Festuca arundinacea Shreb), orchard grass (Dactilys glomerata L), and prairie grass (Bromus unioloides). Treatments were three tillage systems: conventional tillage (CT), reduced tillage (RT), and direct sowing (DS). Sowing was performed with (NI) and without fertilizers (N0) in each treatment. A split-plot experimental design with two repetitions was used, with tillage being the main factor …


Correlation Between Yield Of Forage Legumes In Grass Mixtures And Accumulation Of Soil Mineral Nitrogen In Sweden, Magnus A. Halling, David Scholefield Aug 2021

Correlation Between Yield Of Forage Legumes In Grass Mixtures And Accumulation Of Soil Mineral Nitrogen In Sweden, Magnus A. Halling, David Scholefield

IGC Proceedings (1977-2023)

Soil mineral N and DM yield of five forage legume species were investigated in field experiments at two sites in Sweden, established 1997. The species studied were: red clover (Trifolium pratense L.), lucerne (Medicago sativa L.), white clover (Trifolium repens L.), galega (Galega orientalis Lam.) and lotus (Lotus corniculatus L.), all grown in grass-legume mixed swards. No nitrogen was applied to the legumes. Results from two years of ley (1998 and 1999) are presented. Correlation was found between accumulated mineral N in the soil in the autumn and the total seasonal DM yield of the …


Mgrre_Pureoilscouttickets_State Higgins_1_21143004589000, Mgrre Aug 2021

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No abstract provided.


Mgrre_Pureoilscouttickets_Roscommon Test_1_21143004649000, Mgrre Aug 2021

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No abstract provided.


Mgrre_Pureoilscouttickets_Cornwell Ranch_1_Unk, Mgrre Aug 2021

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No abstract provided.


Mgrre_Pureoilscouttickets_Fish, Robert S._4_21107018130000, Mgrre Aug 2021

Mgrre_Pureoilscouttickets_Fish, Robert S._4_21107018130000, Mgrre

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No abstract provided.


Mgrre_Pureoilscouttickets_Darrah, M. E._5_21107018830000, Mgrre Aug 2021

Mgrre_Pureoilscouttickets_Darrah, M. E._5_21107018830000, Mgrre

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No abstract provided.


Mgrre_Pureoilscouttickets_Cornwell Ranch_3_Unk, Mgrre Aug 2021

Mgrre_Pureoilscouttickets_Cornwell Ranch_3_Unk, Mgrre

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No abstract provided.


Mgrre_Pureoilscouttickets_Brehn_1_21107013280000, Mgrre Aug 2021

Mgrre_Pureoilscouttickets_Brehn_1_21107013280000, Mgrre

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No abstract provided.


Mgrre_Pureoilscouttickets_Dutmers_1_21107019640000, Mgrre Aug 2021

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No abstract provided.


Mgrre_Pureoilscouttickets_State Of Michigan_1_21107021880000, Mgrre Aug 2021

Mgrre_Pureoilscouttickets_State Of Michigan_1_21107021880000, Mgrre

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No abstract provided.


Mgrre_Pureoilscouttickets_Brisboy_1_21107021910000, Mgrre Aug 2021

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No abstract provided.


Mgrre_Pureoilscouttickets_Rouen, J. O._1_21107021950000, Mgrre Aug 2021

Mgrre_Pureoilscouttickets_Rouen, J. O._1_21107021950000, Mgrre

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No abstract provided.


Mgrre_Pureoilscouttickets_Flowers_1_21107019220000, Mgrre Aug 2021

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No abstract provided.


Mgrre_Pureoilscouttickets_Youmans_1_21107016300000, Mgrre Aug 2021

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No abstract provided.


Mgrre_Pureoilscouttickets_Arnette Bros._1_21107022170000, Mgrre Aug 2021

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No abstract provided.


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No abstract provided.


Mgrre_Pureoilscouttickets_Pursley_1_21107022590000, Mgrre Aug 2021

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Mgrre_Pureoilscouttickets_Wood_1_21107023340000, Mgrre Aug 2021

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Mgrre_Pureoilscouttickets_Taggart Brothers Inc._1_21107021280000, Mgrre Aug 2021

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Mgrre_Pureoilscouttickets_Taggart Bros. Inc._1_21107024400000, Mgrre Aug 2021

Mgrre_Pureoilscouttickets_Taggart Bros. Inc._1_21107024400000, Mgrre

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No abstract provided.


Mgrre_Pureoilscouttickets_State Proctor Comm_1_21107122270000, Mgrre Aug 2021

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Mgrre_Pureoilscouttickets_Sias, Fred_1_21111000720000, Mgrre Aug 2021

Mgrre_Pureoilscouttickets_Sias, Fred_1_21111000720000, Mgrre

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No abstract provided.