Seasonal growth of lucerne (Medicago sativa) under rainfed conditions in south east Australia: Variation of experimental and commercial cultivars sourced from Australia and China

2022 ◽  
Vol 277 ◽  
pp. 108409
Author(s):  
Viv Burnett ◽  
Kym Butler ◽  
Steve Clark ◽  
Zhongnan Nie ◽  
Reto Zollinger ◽  
...  
Keyword(s):  
Medicago Sativa ◽  
Seasonal Growth ◽  
Commercial Cultivars ◽  
Rainfed Conditions

AN ANALYSIS OF GROWTH AND DROUGHT TOLERANCE IN RUBBER DURING THE IMMATURE PHASE IN A DRY SUBHUMID CLIMATE

1998 ◽  
Vol 34 (3) ◽  
pp. 287-300 ◽  
Author(s):  
T. R. CHANDRASHEKAR ◽  
M. A. NAZEER ◽  
J. G. MARATTUKALAM ◽  
G. P. PRAKASH ◽  
K. ANNAMALAINATHAN ◽  
...  
Keyword(s):  
Correlation Analysis ◽  
Block Design ◽  
Western India ◽  
Severe Drought ◽  
Seasonal Growth ◽  
Wet Season ◽  
Randomized Block Design ◽  
Relative Increment ◽  
Rainfed Conditions ◽  
Increment Growth

An experiment with the objective of evaluating the performance of 15 clones of rubber (Hevea brasiliensis) was conducted in the Konkan region of Western India. The clones under evaluation were RRII 5, RRII 6, RRII 105, RRII 208, RRII 308, RRIC 52, RRIC 100, RRIC 102, RRIC 105, RRIM 605, PB 260, PB 310, PB 311, PR 255, and PR 261. The region is a trial environment for the crop and experiences more than seven rainless months and severe drought in the summer months. Data on monthly girth growth w ere collected for six years from a trial with randomized block design. The growth of clones in terms of monthly girth increment growth (GIN, cm month−1) seasonal mean girth increments (MGIN, cm season−1) and mean relative increment rates (MRIR, mm cm−1 season−1) as well as annual MGIN (cm a−1) and MRIR (mm cm−1 a−1) was studied. Correlation analysis was performed to understand the effect of seasonal growth on the final growth. At the beginning of the study, the largest girth noted was for the clone RRII 6 (22. 5 cm) followed by RRII 208 (22.0 cm). PR 261 with a girth of only 14.2 cm was the least vigorous among the clones. A large portion of the growth occurred in the wet season only. During the dry season the growth rates of the clones declined substantially and decreases in girth ranging from 0.2 mm to 0.5 mm were noticed in most of the clones. At the end of the study period the largest girth observed was for clone RRII 208 (49.3 cm) and the lowest for PR 261 (39.3 cm). The highest proportion of tappable trees noted was for clone RRII 208 (52.4%) and the lowest for PR 261 (2.7%). The pooled average of tappable trees was on ly 17.5%. The data revealed that the immaturity period for Hevea in the region will not be less than 9 years under rainfed conditions. From the analysis based on the final girth it was concluded that clones RRII 208, RRIC 52, RRII 6, RRIC 100 and RRIC 102 are more tolerant to drought while RRII 105, RRIC 105, RRII 5, RRIM 605, PB 310, PB 260, PB 311, PR 255, RRII 308 and PR 261 are less tolerant. The results of correlation indicated that by analysing the growth, potentially drought-toleran t clones can be identified.

Seasonal growth of an Australian cultivar of creeping-rooted lucerne (Medicago sativa)

1968 ◽  
Vol 8 (34) ◽  
pp. 548 ◽  
Author(s):  
H Daday ◽  
JW Peak ◽  
T Launders ◽  
DG Cameron ◽  
GB Campbell ◽  
...  
Keyword(s):  
Medicago Sativa ◽  
Western Australia ◽  
New South ◽  
New South Wales ◽  
Relative Yield ◽  
Stand Density ◽  
Climatic Conditions ◽  
Seasonal Growth ◽  
South Wales ◽  
Summer Temperatures

Stand density after establishment and yield of the first Australian creeping-rooted lucerne bred in Canberra, were compared with those of the cultivars Hunter River, Hairy Peruvian, Du Puits, and African under markedly differing climatic conditions in 13 trials in eastern, southern, and south-western Australia. A highly significant cultivar X locality interaction was detected in each of the three seasons (spring, summer, and winter) in which yield was measured. Differences in the relative yield of Hunter River and the creeping-rooted lucerne in environments differing in temperature account, in part, for this effect. In environments of moderate summer temperatures such as the tablelands of New South Wales and Tasmania, the sward yields of the new cuitivar measured in spring, summer, and winter were similar to those of Hunter River, but were significantly inferior in areas with high summer temperatures.

scholarly journals Adaptation patterns of sixteen alfalfa (Medicago sativa L.) cultivars across contrasting environments of Algeria and implications for the crop improvement

2020 ◽  
Vol 15 (1) ◽  
pp. 57-62 ◽  
Author(s):  
Chahira Achir ◽  
Paolo Annicchiarico ◽  
Luciano Pecetti ◽  
Houssem-Eddine Khelifi ◽  
Mahfoud M’Hammedi-Bouzina ◽  
...  
Keyword(s):  
Medicago Sativa ◽  
Interaction Analysis ◽  
Crop Improvement ◽  
Geographic Origin ◽  
Environment Interaction ◽  
Genotype Effect ◽  
Rainfed Conditions ◽  
Medicago Sativa L ◽  
Salt Tolerant Cultivars ◽  
Cultivar Responses

The additive main effects and multiplicative interaction analysis was applied to assess the genotype × environment interaction (GEI) effects and stability for 4-year dry matter yield (DMY) of 16 alfalfa (Medicago sativa L.) cultivars of diversified geographic origin grown in four Algerian environments given by the combination of two water managements (rainfed and irrigated) and two evaluation sites, viz. the sub-humid location of Alger and the semi-arid, salinity-affected site of Hmadna. The analysis of variance (ANOVA) revealed significant variation among cultivars and environments (P<0.001). The GEI was significant (P<0.001) and the environment main effect had greater influence than the genotype effect on long-term yield according to ANOVA. Rainfed conditions had 41.6% and 48.5% lower yield than the irrigated ones in Alger and Hmadna, respectively. Alfalfa cropping in the semiarid location caused lower DMY than in the sub-humid one (– 38.0% under irrigated and –45.2% under rainfed conditions) and a slightly lower persistence over the 4-year period. Outstanding environment-specific cultivar responses were observed, fully justifying the large GEI effects, although the Italian cultivar Sicilian ecotype had remarkable yield stability and good mean yield. The American variety Ameristand 801S and the Moroccan landrace Erfoud 1 were the most salt-tolerant cultivars. The evaluated germplasm, and particularly some exotic cultivars, could be used as parents to breed new varieties more adapted to drought and salinity in the Mediterranean basin.

Dalton alfalfa

2008 ◽  
Vol 88 (3) ◽  
pp. 523-525
Author(s):  
S. N. Acharya
Keyword(s):  
Medicago Sativa ◽  
Key Words ◽  
Seed Production ◽  
Verticillium Wilt ◽  
Bacterial Wilt ◽  
Research Centre ◽  
Western Canada ◽  
Rainfed Conditions ◽  
Cultivar Description

Dalton alfalfa (Medicago sativa) was developed by the Agriculture and Agri-Food Canada Research Centre, Lethbridge, Alberta. This cultivar, tested as LRC01CR in western Canada, is derived from parental clones that are both bacterial wilt (BW) and verticillium wilt (VW) resistant. When grown under irrigated and rainfed conditions for forage it out yielded Beaver (check) by 3%, for seed it out yielded Beaver on irrigation by 19%. Dalton is well suited to forage and seed production in western Canada where VW may be of concern. Key words: Cultivar description, alfalfa, Medicago sativa

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).

A REVIEW OF 10 YEARS' RESEARCH WITH RED CLOVERS UNDER GRAZING IN SOUTHLAND

1989 ◽  
pp. 181-187
Author(s):  
R.J.M. Hay ◽  
D.L. Ryan
Keyword(s):  
Tall Fescue ◽  
Red Clover ◽  
Farming Systems ◽  
Seasonal Growth ◽  
Sheep Grazing ◽  
High Quality ◽  
Late Flowering ◽  
Heavy Weight ◽  
Widespread Acceptance ◽  
Summer Growth

In a series of trials at Grasslands Gore, over 10 years, the late-flowering tetraploid red clover 'Grassland Pawera' was more productive and persistent than other red clover cultivars. The strong summer growth of Pawera meets the need for heavy-weight lamb feed and high quality forage for conservation in intensive sheep farming systems in Southland. Lenient. infrequent defoliation is necessary to maximise DM production and persistence of Pawera. The most compatible of the grasses evaluated was 'Grasslands Roa' tall fescue. However, 'Grasslands Nui' ryegrass will still be the major grass sown with Pawera owing to its widespread acceptance. In ryegrass mixtures, sowing rates of 5-7 kg/ha of red clover were needed to optimise establishment and subsequent yield. Evidence of oestrogenic activity of Pewera to sheep prompted Grasslands Division to select within Pawera for a low formononetin cultivar. Keywords: red clover, Pawera. Hamua, Turoa. G21. G22, G27. oestrogenic activity, Nui ryegrass, Roa tall fescue, Maru phalaris. Southland, sheep grazing, frequency, intensity, quality. seasonal growth

EVALUATION OF CLOVERS ON SANDY COASTAL SOIL

1977 ◽  
pp. 130-138 ◽  
Author(s):  
W.M. Williams ◽  
L.B. Anderson ◽  
B.M. Cooper
Keyword(s):  
New Zealand ◽  
Drought Stress ◽  
Sandy Soil ◽  
White Clover ◽  
Plant Material ◽  
Red Clover ◽  
Early Spring ◽  
Commercial Cultivars ◽  
Mediterranean Origin ◽  
Winter Annual

In evaluations of clover performances on summer-dry Himatangi sandy soil, it was found that none could match lucerne over summer. Emphasis was therefore placed on production in autumn-winter- early spring when lucerne growth was slow. Evaluations of some winter annual clover species suggested that Trifolium spumosum, T. pallidum, T. resupinatum, and T. vesiculosum would justify further investigation, along with T. subterraneum which is already used in pastures on this soil type. Among the perennial clover species, Kenya white clover (7'. semipilosum) showed outstanding recovery from drought and was the only species to produce significantly in autumn. However, it failed to grow in winter-early spring. Within red clover, materials of New Zealand x Moroccan origin substantially outproduced the commercial cultivars. Within white clover, material from Israel, Italy and Lebanon, as well as progeny of a selected New Zealand plant, showed more rapid recovery from drought stress and subsequently better winter growth than New Zealand commercial material ('Grasslands Huia'). The wider use of plant material of Mediterranean origin and of plants collected in New Zealand dryland pastures is advocated in development of clover cultivars for New Zealand dryland situations.

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