Evaluation of eastern gamagrass and a sorghum × sudangrass for summer pasture

Preparing agricultural producers to cope with volatile weather changes, specifically drought, requires a better understanding of forage water-use efficiency (WUE) potentials. Options to improve farm resiliency to drought may include the use of C4 annual and perennial forages, which have greater production efficiency during drought than commonly used C3 forages. Our objective was to measure WUE through real-time gas exchange measurements of photosynthesis and transpiration in (1) a greenhouse study and (2) under field-grazing conditions. Growth parameters, instantaneous water use efficiency (iWUE), and mass-based WUE (mWUE) data were collected under greenhouse conditions in Study 1 for the following species: crabgrass (Digitaria sanguinalis cv. ‘Red River’), switchgrass (Panicum virgatum cv. ‘Alamo’), big bluestem (Andropogon gerardii cv. ‘OZ-70’), indiangrass (Sorghastum nutans cv. ‘Rumsey’), eastern gamagrass (Tripsacum dactyloides cv. ‘Pete’), bermudagrass (Cynodon dactylon cv. ‘Vaughn’s #1’), sorghum-sudangrass (Sorghum bicolor (L.) × Sorghum sudanese (P.) cv. ‘Greengrazer’), and tall fescue (Schedonorus arundinaceus (Schreb.) Dumort). Study 2 occurred from 2014 to 2016, and evaluated iWUE of crabgrass, switchgrass, bermudagrass, eastern gamagrass, and a big bluestem/indiangrass mix under field conditions. Overall, in situ iWUE of crabgrass, switchgrass, eastern gamagrass, and bermudagrass did not differ, while iWUE of the big bluestem/indiangrass was less than switchgrass and crabgrass, an advantage for these species if the standardized precipitation index drops below zero. Bermudagrass, switchgrass, sorghum-sudangrass, pearl millet, and indiangrass had comparable mWUE values under greenhouse-simulated drought. These results will aid in the development of forage species recommendations for mitigating drought and improving resiliency.

Download Full-text

Selected Pacific Northwest Crops as Hosts of Pratylenchus neglectus and P. thornei

Plant Disease ◽

10.1094/pdis-12-13-1296-re ◽

2014 ◽

Vol 98 (10) ◽

pp. 1341-1348 ◽

Cited By ~ 10

Author(s):

Richard W. Smiley ◽

Guiping Yan ◽

Jennifer A. Gourlie

Keyword(s):

Pacific Northwest ◽

Crop Rotation ◽

Crop Species ◽

Nematode Density ◽

Pratylenchus Neglectus ◽

Eastern Gamagrass ◽

Cultivar Selection ◽

Brassica Spp ◽

Sorghum Sudangrass

Thirty crop species and cultivars were assayed in the greenhouse for efficiency as hosts of Pratylenchus neglectus and P. thornei. Hosting ability ratings were assigned using the ratio of final versus initial nematode density and also by comparing the final nematode density to that of a susceptible wheat control. Good hosts of both Pratylenchus spp. included oat ‘Monida’, chickpea ‘Myles’, and lentil ‘Athena’ and ‘Morton’. Good hosts of P. neglectus but not of P. thornei included 10 Brassica spp. (5 canola, 2 mustard, and 3 camelina cultivars), chickpea ‘Sierra’, sudangrass ‘Piper’, and sorghum/sudangrass hybrid ‘Greentreat Plus’. Good hosts of P. thornei but not of P. neglectus included lentil ‘Skyline’ and pea ‘Granger’, ‘Journey’, and ‘Universal’. Poor or minor hosts of both Pratylenchus spp. included chickpea ‘Dwelley’, pea ‘Badminton’, safflower ‘Gila’, ‘Girard’, and ‘KN 144’, sunflower ‘2PD08’, flax ‘Pembina’, eastern gamagrass ‘Pete’, and switchgrass ‘Blackwell’. Results of these assays will provide guidance for improving crop rotation and cultivar selection efficiencies.

Download Full-text

Influence of Different Defoliation Systems on the Regrowth of Pearl Millet, Hybrid Sudangrass, and Two Sorghum‐Sudangrass Hybrids from Terminal, Axillary, and Basal Buds 1

Crop Science ◽

10.2135/cropsci1970.0011183x001000040008x ◽

1970 ◽

Vol 10 (4) ◽

pp. 345-349 ◽

Cited By ~ 9

Author(s):

John G. Clapp ◽

Douglas S. Chamblee

Keyword(s):

Pearl Millet ◽

Sorghum Sudangrass

Download Full-text

Registration of ‘Pete’ Eastern Gamagrass

Crop Science ◽

10.2135/cropsci1990.0011183x003000030057x ◽

1990 ◽

Vol 30 (3) ◽

pp. 741-742 ◽

Cited By ~ 14

Author(s):

G. L. Fine ◽

F. L. Barnett ◽

K. L. Anderson ◽

R. D. Lippert ◽

E. T. Jacobson

Keyword(s):

Eastern Gamagrass

Download Full-text

Registration of Gynomonoecious Germplasm (GSF‐I and GSF‐II of Eastern Gamagrass

Crop Science ◽

10.2135/cropsci1985.0011183x002500040050x ◽

1985 ◽

Vol 25 (4) ◽

pp. 715-715 ◽

Cited By ~ 10

Author(s):

C. L. Dewald ◽

R. S. Dayton

Keyword(s):

Eastern Gamagrass

Download Full-text

Construction of high density genetic map and QTL mapping in sorghum × sudangrass

Euphytica ◽

10.1007/s10681-021-02895-9 ◽

2021 ◽

Vol 217 (8) ◽

Author(s):

Peng Jin ◽

Lihua Wang ◽

Wenjie Zhao ◽

Jian Zheng ◽

Yi-Hong Wang ◽

...

Keyword(s):

Qtl Mapping ◽

Genetic Map ◽

High Density ◽

Sorghum Sudangrass

Download Full-text

145 Stocker gains on diverse summer annual pastures

Journal of Animal Science ◽

10.1093/jas/skz397.064 ◽

2020 ◽

Vol 98 (Supplement_2) ◽

pp. 28-29

Author(s):

Kelly Mercier ◽

Chris Teutsch ◽

Ray Smith ◽

Eric Vanzant ◽

Kenny Burdine ◽

...

Keyword(s):

Nutritive Value ◽

Vegetative State ◽

Block Design ◽

Average Daily Gain ◽

Complex Mixture ◽

Warm Season ◽

Late Summer ◽

Sunn Hemp ◽

Sorghum Sudangrass ◽

Forage Utilization

Abstract The objective of this study was to determine if increasing forage botanical diversity improved stocker gains on warm-season annual (WSA) pastures. An opportunity exists to add extra gain on fall-born calves by grazing summer pastures after spring weaning and selling at a more favorable late summer market. However, cool-season perennial pastures in the Mid-South often have insufficient quality and yield to support desired summer gains. Therefore, the improved production and nutritive value of WSA forages shows promise in this system. A study was conducted near Princeton, KY, where calves (329, 366, and 297 kg in 2017, 2018, and 2019, respectively) grazed one of three WSA forage treatments without supplementation in a randomized complete block design with three replications. Treatments included 1) sorghum-sudangrass monoculture (MONO), 2) simple mixture (SIMPLE = sorghum-sudangrass, pearl millet, soybean), and 3) complex mixture (COMPLEX = SIMPLE + sudangrass, corn, crabgrass, cowpea, sunflower, sunn hemp, daikon radish, forage rape, Korean lespedeza). In 2017, MONO and SIMPLE calves had higher average daily gain (ADG) than COMPLEX calves (0.79 kg/day vs. 0.66 kg/day, P < 0.03). In 2018, no differences in ADG were detected among treatments (P > 0.3); however, calves only gained 0.01 kg/day. In 2019, MONO and SIMPLE calves again had higher ADG than COMPLEX calves (0.59 kg/day vs. 0.43 kg/day, P < 0.03). The exceptionally low 2018 ADG was likely due to the higher nutritional demand of heavier calves and the lower nutritive value of mature forages compared to other years. In conclusion, complex WSA forage mixtures did not offer any improvement in animal performance, and proper management of all WSA forages (maintaining a vegetative state) is paramount to achieving adequate gains on stockers without supplementation; however, supplementation may be necessary to improve WSA forage utilization in the rumen, potentially leading to more favorable gains.

Download Full-text

From Ossau and Iraty to PDO Ossau-Iraty

British Food Journal ◽

10.1108/bfj-10-2018-0719 ◽

2019 ◽

Vol 121 (12) ◽

pp. 3062-3075 ◽

Cited By ~ 1

Author(s):

Morgane Millet

Keyword(s):

Local Development ◽

Qualitative Interviews ◽

Pasture Production ◽

Content Type ◽

Farm Production ◽

Protected Designation Of Origin ◽

Summer Pasture ◽

On Farm ◽

Term Analysis

Purpose The purpose of this paper is to understand how a geographical indication (GI) is built through time and how its (non)appropriation by local producers shapes it. The reciprocity of such process is also considered: how the creation of a GI changes local relationships between producers, within the GI and out of it? The case of Ossau-Iraty is relevant: in south-west of France, this protected designation of origin (PDO) has been based on two distinct regions: Bearn (Ossau) and Pays Basque (Iraty). Since then, most producers of Bearn have rejected this PDO. Design/methodology/approach The author adopts a diachronic perspective: the trajectory of the local dairy ewe sector is described, focusing on the trajectory of on-farm cheese makers from Bearn and Pays Basque and the trajectory of Ossau-Iraty. Based on different methods (qualitative interviews and archive research), this paper aims at analyzing the interactions within such heterogeneous networks. Findings When the PDO was created (1980), the opposition between producers of Bearn and Pays Basque was based on strong senses of place, which would be translated in a different perception of tradition: to Bearn producers, PDO Ossau-Iraty would be an industrial cheese, in which they did not recognize their product and themselves. With time, the producers who have been involved in the PDO worked on its specifications. The recognition of symbolic practices such as on-farm production or Summer pasture production, the recognition of differences between Basque cheese and Bearn cheese are changes that contribute to the evolution of perceptions within the local producers’ community. The author observes a recent convergence between Basque producers and Bearn producers, as their distinct products share common and strong qualifications within PDO Ossau-Iraty that contribute to their respective valorization. However, it seems to occur at an institutional level and the adhesion of the local producers might still be at stakes. Research limitations/implications A statistical study could reinforce the author’s exploratory and historical research. Furthermore, it would have been relevant to take local inhabitants and local consumers into account, as they have participated in the products’ qualifications as well. Originality/value A long-term analysis (40 years) contributes to better understand how cheeses are valorized and how such process is based on controversial processes. It contributes to root GIs into local histories, which are nor as consensual neither as uniform as we would primarily think, and to identity levers for sustainable local development.

Download Full-text