Medicago sativa and Desmanthus virgatus: suitable perennial legumes in mixes with Digitaria eriantha in Australia during drought

2021 ◽  
Author(s):  
Suzanne P. Boschma ◽  
Carol A. Harris ◽  
Mark A. Brennan ◽  
Steven Harden
Keyword(s):  
Medicago Sativa ◽  
Digitaria Eriantha ◽  
Perennial Legumes

Effects of environmental factors on the performance of Digitaria eriantha and Medicago sativa in monoculture and mixture

1997 ◽  
Vol 37 (3) ◽  
pp. 323 ◽  
Author(s):  
P. G. Tow ◽  
A. Lazenby ◽  
J. V. Lovett
Keyword(s):  
Medicago Sativa ◽  
Growth Patterns ◽  
North West ◽  
Far North ◽  
Temperature Regimes ◽  
Moisture Regimes ◽  
Digitaria Eriantha ◽  
Summer Temperatures ◽  
Spring Temperatures ◽  
Applied Nitrogen

Summary. A glasshouse experiment was conducted to test hypotheses concerning differences in environmental adaptation of Digitaria eriantha (digitaria) and Medicago sativa cv. Hunter River (lucerne), and advantages of growing them in mixture on a solodic soil on the Far North-West Slopes of New South Wales. The 2 species were grown in monoculture and mixture in simulated solodic soil profiles, at 2 temperature regimes, 2 levels of available nitrogen (0 and 0.25 g/container after each harvest), and 3 moisture levels (drought, adequate, flood), thus providing the range of conditions encountered in the field. The 2 species differed markedly in their response to temperature, which explains the complementary seasonal growth patterns in the field. Summer temperatures favoured digitaria growth while spring temperatures favoured lucerne growth. At summer temperatures, digitaria outyielded lucerne at all moisture regimes with applied nitrogen, as well as the flooded treatment without applied nitrogen. At spring temperatures, lucerne outyielded digitaria without nitrogen applied, as well as in the adequate moisture regimes with nitrogen applied. Yields of each species were reduced by periodic flooding and droughting; at their respective more favoured temperature regimes for growth, the percentage reduction in yield at individual harvests was higher in lucerne than in digitaria, especially for flooding. Flooding at summer temperatures had the worst effect on lucerne but summer droughting was almost as severe, especially with continued application of these treatments. Both species responded to nitrogen, the percentage dry matter increase being higher at summer than at spring temperatures. The species responded to temperature, moisture and nitrogen in the same way in mixture as in monoculture. The yield response of the mixture was dominated by that of the most responsive species at that regime. Monocultures rarely outyielded the mixture. The mixture sometimes significantly outyielded both monocultures, mainly with summer temperature, adequate moisture and low nitrogen. Long-term exploitation of the complementary temperature responses of the 2 species and their overall adaptation to the temperature regime of the Far North-West Slopes may depend on measures to minimise the effects of intermittent flooding and droughting in summer.

Water relations and adaptations to increasing water deficit in three perennial legumes, Medicago sativa, Dorycnium hirsutum and Dorycnium rectum

2006 ◽  
Vol 290 (1-2) ◽  
pp. 231-243 ◽  
Author(s):  
Lindsay W. Bell ◽  
Aleida H. Williams ◽  
Megan H. Ryan ◽  
Mike A. Ewing
Keyword(s):  
Medicago Sativa ◽  
Water Deficit ◽  
Water Relations ◽  
Perennial Legumes

Adaptation and complementarity of Digitaria eriantha and Medicago sativa on a solodic soil in a subhumid environment with summer and winter rainfall

1997 ◽  
Vol 37 (3) ◽  
pp. 311 ◽  
Author(s):  
P. G. Tow ◽  
J. V. Lovett ◽  
A. Lazenby
Keyword(s):  
Medicago Sativa ◽  
Dry Matter ◽  
New South ◽  
New South Wales ◽  
North West ◽  
Far North ◽  
South Wales ◽  
Digitaria Eriantha ◽  
High Yields ◽  
Yield Responses

Summary. A cutting experiment was conducted over 4 years on a solodic soil on the Far North-West Slopes of New South Wales to compare the environmental adaptation of Digitaria eriantha ssp. eriantha cv. Premier and Medicago sativa cv. Hunter River. Adaptation was tested by comparing seasonal yield responses of the monocultures and the mixture at high and low levels of nitrogen (N); monoculture yields were also compared with those predicted by a simple climate-based model. When N was non-limiting, digitaria yields were highest in summer while lucerne yields were highest in spring. Lucerne yields in summer were often much lower than those predicted by the model but the plant recovered well during periods of milder temperature, until decimated by flooding. Yields of the mixture were similar to those of digitaria in summer when it was grass dominant, and similar to lucerne in spring when it was legume dominant. Overall, at high N the mixture did not outyield digitaria. In the absence of fertiliser N, digitaria and lucerne monocultures gave similar dry matter yields. However, over the 3 warm seasons, the mixture produced 72% more dry matter than the monocultures and 263% (325 kg/ha) more N than digitaria. The complementary seasonal responses of digitaria and lucerne, and high yields of the mixture suggest a role for the mixture on solodic soils on the Far North-West Slopes of New South Wales provided the effects of irregular flooding on lucerne can be minimised by management or more tolerant cultivars.

Characterization of embryogenesis-related proteins in alfalfa (Medicago sativa)

1996 ◽  
Vol 96 (4) ◽  
pp. 585-592 ◽  
Author(s):  
Randal W. Giroux ◽  
K. Peter Pauls
Keyword(s):  
Medicago Sativa ◽  
Related Proteins

Effects of estrone and 17beta-estradiol on vegetative growth of Medicago sativa

1992 ◽  
Vol 84 (2) ◽  
pp. 217-222 ◽  
Author(s):  
Laurence S. Shore ◽  
Yoram Kapulnik ◽  
Bruria Ben-Dor ◽  
Yechezkial Fridman ◽  
Smadar Wininger ◽  
...  
Keyword(s):  
Medicago Sativa ◽  
Vegetative Growth

Estimación de biomasa aérea de forrajes de invierno bajo riego a través de un dron

2019 ◽  
Vol 12 (4) ◽  
Author(s):  
Francisco Gavi Reyes ◽  
César Botello-Aguillón ◽  
Leonardo Tijerina-Chávez ◽  
Arturo Galvis-Spíndola ◽  
Rodrigo Roblero-Hidalgo
Keyword(s):  
Medicago Sativa ◽  
Avena Sativa ◽  
Medicago Sativa L

E Objetivo: Desarrollar un procedimiento para estimar biomasa con imágenes digitales captadas desde un dron y modelación 3D (ID-Dron-3D) aplicable en alfalfa (Medicago sativa L.) y avena forrajera (Avena sativa L.). Diseño/metodología/aproximación: Con una cámara digital acoplada al dron se obtuvieron imágenes antes de la cosecha de los cultivos, que fueron procesadas con software para luego estimar volumen de biomasa. En cada cultivo se midió altura de la planta y área cosechada, volumen aparente y real de biomasa, y peso de biomasa fresca y seca. Resultados: Con base en el análisis de regresión se obtuvieron modelos lineales a una p<0.05 para predecir: biomasa fresca en avena (R2=0.70) y alfalfa (R2 =0.47); y biomasa seca en avena (R2=0.78) y en alfalfa (R2=0.31) mediante ID-Dron-3D. Limitaciones del estudio/implicaciones: Considerando las R2 de los modelos obtenidos, los resultados en la avena forrajera fueron mejores, respecto a los detectados en alfalfa, lo cual se puede deber a la mayor variabilidad de la cobertura vegetal, ya que, en algunas unidades de muestreo, las plantas de alfalfa no cubrían completamente el suelo. Hallazgos/conclusiones: El rendimiento de biomasa fresca y seca de ambos cultivos se correlacionó significativamente con su respectivo volumen aparente estimado con imágenes digitales tomadas desde un dron y su procesamiento 3D (ID-Dron-3D).

ALFALFA (Medicago sativa L.) CULTIVADA EN CAMPECHE, MÉXICO Y SU INTEGRACIÓN LOCAL EN LA ALIMENTACIÓN DE CORDEROS EN CONFINAMIENTO

2018 ◽  
Vol 11 (9) ◽  
Author(s):  
CC. Castillo-Águilar
Keyword(s):  
Medicago Sativa ◽  
Pennisetum Purpureum ◽  
Medicago Sativa L

Se comparó el uso de diferentes dietas con base en heno de alfalfa cultivada (Medicago sativa L.) en Campeche y su relación con un concentrado comercial y pasto Taiwán (Pennisetum purpureum), T1=concentrado comercial, T2=T1+heno de alfalfa, T3=T1+pasto Taiwán, T4=heno de alfalfa. Se evaluó el comportamiento productivo y metabólico de corderos en sistema intensivo utilizando 20 corderos machos con encaste de Pelibuey, Dorper y Black Belly de 12.5±1 kg de peso vivo (PV). Se midió el consumo de materia seca total (CMS), la ganancia diaria de peso (GDP), la conversión alimenticia (CA), y la digestibilidad in situ de la materia seca (DISMS). También fueron evaluados el pH, nitrógeno amoniacal (NH3) y la concentración de ácidos grasos volátiles (AGV) en líquido ruminal. La mejor GDP en gramos por día, de 234 g (p?0.05) se obtuvo en el T2; en contraste, el T3 mostró la menor GDP. La dieta que incluyó la mezcla de heno de alfalfa y concentrado mejoró significativamente las condiciones de las variables pH, NH3 y AGV (p?0.05).

ALFALFA VARIETIES ZONED IN THE CENTRAL CHERNOZEM ZONE OF THE RUSSIAN FEDERATION

2020 ◽  
Author(s):  
Galina Stepanova
Keyword(s):  
Medicago Sativa ◽  
Dry Matter ◽  
Maximum Yield ◽  
The State ◽  
Average Yield ◽  
State Register ◽  
Independent Evaluation ◽  
Medicago Sativa L ◽  
Alfalfa Varieties ◽  
Central Chernozem

The article describes the main morphological and biological features of alfalfa varieties included in the State register of breeding achievements approved for use in the Central Chernozem zone of Russia. A total of 32 alfalfa varieties are included in the State register. This is 9 varieties of blue alfalfa (Medicago sativa L. subsp. Sativa) of domestic selection and 8 foreign, 11 varieties of variable alfalfa (Medicago sativa L. nothosubsp. varia (Martyn) Arcang.) domestic selection and 1 variety of foreign and 3 varieties of yellow alfalfa (Medicago sativa L. subsp. falcata (L.) Arcang.). It shows the average and maximum yield of varieties determined in the process of state variety testing, as well as independent evaluation in research institutions in the region. Varieties of blue alfalfa of domestic selection Kevsala, Elena, Satellite, Vavilovskaya Yubileynaya were the most productive. The average yield of dry matter of these varieties reaches 8.4–9.2 t/ha, the maximum — 15.3–17.7 t/ha. Alfalfa varieties Timbale and Galaxy were the most productive among foreign varieties: the average yield of dry matter was 8.1 and 8.3 t/ha, the maximum – 15.5 and 17.2 t/ha. Varieties of alfalfa variable Vitalina and Vela provided an average yield of dry matter of 7.6 and 9.0 t/ha, the maximum yield reached 15.4 and 18.1 t/ha.

Influence of the method of sowing and seeding rate on the yield of alfalfa in the south of Belarus

2020 ◽  
Author(s):  
Ol'ga Ptashec ◽  
Lyudmila Luchenok
Keyword(s):  
Medicago Sativa ◽  
The South ◽  
Seeding Rate ◽  
Peat Soils ◽  
Positive Correlation ◽  
Green Mass ◽  
Grass Stand

The results of studies on the influence of agrotechnological techniques on the productivity of alfalfa (Medicago sativa), cultivation on agro-peat soils in the south of Belarus were presented. It was established that the yield of green mass on average over 4 years of life was 393.6–517.9 c / ha when sown under cover and 494.3–629.8 centners ha-1 with coverless sowing. Productivity — 56.5–75.1 and 69.5–89.7 centners ha-1, respectively. A positive correlation between the increase in the yield and productivity of the grass stand with an rise in the seeding rate and doses of fertilizers applied was noted.

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