ALFALFA (Medicago sativa L. and M. falcata L.) CULTIVAR × ROW SPACING INTERACTION ON YIELD AT A SEMIARID ENVIRONMENT IN SOUTHWESTERN SASKATCHEWAN

1984 ◽  
Vol 64 (4) ◽  
pp. 895-900 ◽  
Author(s):  
R. B. IRVINE ◽  
P. G. JEFFERSON
Keyword(s):  
Drought Tolerance ◽  
Medicago Sativa ◽  
Plant Density ◽  
Physiological Traits ◽  
Yield Response ◽  
Row Spacing ◽  
Semiarid Environment ◽  
Medicago Sativa L ◽  
Lower Plant

Ten alfalfa (Medicago sativa L. and M. falcata L.) cultivars were grown in 30- and 90-cm row spacings on a dryland site at Swift Current, Saskatchewan. From 1979 to 1981 there was a significant cultivar × spacing interaction on yield at every harvest except the second cutting in 1981. The M. falcata cultivars, Anik and Sc MF 3713, were better able to exploit the lower plant density at the 90-cm spacing than M. sativa cultivars, Thor and Banner. Yields of Anik and Sc Mf 3713 increased with 90-cm compared to 30-cm spacing, while Thor and Banner decreased. The creeping rooted cultivars Rambler and Rangelander did not differ from Anik or Sc Mf 3713 in yield response to increased row spacing. This suggests that the observed cultivar × spacing interaction was due to morphological and/or physiological traits associated with the M. falcata cultivars, other than the creeping rooted habit.Key words: Creeping rooted, drought tolerance, WUE

EFFECT OF ROW SPACING AND SEEDING RATES ON SUMMER RAPE IN SOUTHERN MANITOBA

1990 ◽  
Vol 70 (1) ◽  
pp. 127-137 ◽  
Author(s):  
M. J. MORRISON ◽  
P. B. E. McVETTY ◽  
R. SCARTH
Keyword(s):  
Brassica Napus ◽  
Seed Quality ◽  
Plant Density ◽  
Chlorophyll Concentration ◽  
Plant Distribution ◽  
Row Spacing ◽  
Seeding Rate ◽  
Brassica Napus L ◽  
Plant Densities ◽  
Lower Plant

To determine the effects of varying plant densities on summer rape (Brassica napus L.), the cultivar Westar was seeded in 15- and 30-cm row spacings at seeding rates of 1.5, 3.0, 6.0, and 12.0 kg ha−1. Plants seeded in 15-cm rows yielded more per area, produced more pods per plant and lodged less than those in 30-cm rows. Higher yields were associated with a more even plant distribution and a lower degree of intra-row competition. There were no significant protein, oil and chlorophyll concentration differences between the row spacing treatments. The highest yields (kg ha−1) were achieved with the 1.5 and 3.0 kg ha−1 seeding rates. Summer rape compensated for lower plant densities with the production of more branch racemes. As seeding rate increased, competitive mortality increased, resulting in greater etiolation at bolting, and greater lodging at harvest. Seed oil and protein concentrations were not affected by seeding rate. However, seed chlorophyll concentration decreased with increased seeding rate.Key words: Brassica napus, plant density, seed quality, rape (summer)

Assessment of summer drought tolerance variability in Mediterranean alfalfa (Medicago sativa L.) cultivars under Moroccan fields conditions

2013 ◽  
Vol 59 (1) ◽  
pp. 147-160 ◽  
Author(s):  
Abdelaziz Bouizgaren ◽  
Mohamed Farissi ◽  
Cherki Ghoulam ◽  
Rajae Kallida ◽  
Mustapha Faghire ◽  
...  
Keyword(s):  
Drought Tolerance ◽  
Medicago Sativa ◽  
Summer Drought ◽  
Medicago Sativa L

scholarly journals Effect of Row Spacing and Seeding Rate on Yield Component and Seed Yield of Alfalfa (Medicago sativa L.)

2010 ◽  
Vol 2 (1) ◽  
pp. 74-80 ◽  
Author(s):  
Gholamreza ABADOUZ ◽  
Abdollah HASANZADEH GORTTAPEH ◽  
Abdol Amir RAHNEMA ◽  
Adela BEHRADFAR
Keyword(s):  
Medicago Sativa ◽  
Seed Yield ◽  
Yield Component ◽  
Row Spacing ◽  
Seeding Rate ◽  
Medicago Sativa L

Reevaluation of row spacing/plant density of seeded pasture grasses for the semiarid prairie

1998 ◽  
Vol 78 (2) ◽  
pp. 257-264 ◽  
Author(s):  
Paul G. Jefferson ◽  
G. Andrew Kielly
Keyword(s):  
Plant Density ◽  
Forage Yield ◽  
Agropyron Cristatum ◽  
Row Spacing ◽  
Forage Production ◽  
Crested Wheatgrass ◽  
Psathyrostachys Juncea ◽  
Pasture Grasses ◽  
Medicago Sativa L ◽  
Harvest Method

Previous research in the semiarid prairie at Swift Current, Saskatchewan, indicated that optimum row spacing for forage production was 60 or 90 cm for crested wheatgrass (Agropyron cristatum [L.] Gaertner) and Russian wild ryegrass (Psathyrostachys juncea [Fisch.] Nevski). However, recent research suggested that harvest method affects forage yield estimates from row spacing experiments. An experiment with three row spacings of mixtures of alfalfa (Medicago sativa L.) with crested wheatgrass and Russian wild ryegrass was harvested mechanically and by hand. Yield differences between methods of harvesting were affected by row spacing; larger differences were observed at 15 cm than at 60 cm spacing, particularly for Russian wild ryegrass. The highest hand-harvested forage yield estimates were observed in the narrowest row spacing. In a second experiment, plant density was evaluated for the same grasses using square grid spacings of 30, 45, 60, 75 and 90 cm. Decreasing plant density was associated with decreased hand-harvested forage yield in both species. In a third experiment, 60- and 90-cm row spacing resulted in more seed heads and lower leaf content than 30-cm row spacing. Leaf digestibility increased slightly with increased row spacing. These results suggest that 30-cm row spacing should be recommended to producers for sustainable pastures in the semiarid prairie region. Key words: Forage yield, forage quality, leaf:stem ratio, plot technique

Molecular cloning and functional analysis of the drought tolerance gene MsHSP70 from alfalfa (Medicago sativa L.)

2017 ◽  
Vol 130 (2) ◽  
pp. 387-396 ◽  
Author(s):  
Zhenyi Li ◽  
Ruicai Long ◽  
Tiejun Zhang ◽  
Zhen Wang ◽  
Fan Zhang ◽  
...  
Keyword(s):  
Functional Analysis ◽  
Drought Tolerance ◽  
Medicago Sativa ◽  
Molecular Cloning ◽  
Medicago Sativa L ◽  
Tolerance Gene

Effects of row spacing and plant growth regulation on alfalfa seed yield (Medicago sativa L.)

2020 ◽  
Vol 52 (5) ◽  
Author(s):  
Duro Pajcin ◽  
Savo Vuckovic ◽  
Vera Popovic ◽  
Aleksandar Simic ◽  
Sandra Popovic ◽  
...  
Keyword(s):  
Plant Growth ◽  
Medicago Sativa ◽  
Seed Yield ◽  
Growth Regulation ◽  
Row Spacing ◽  
Plant Growth Regulation ◽  
Alfalfa Seed ◽  
Medicago Sativa L

Genetic diversity and phenotypic variation for drought resistance in alfalfa (Medicago sativa L.) germplasm collected for drought tolerance

2017 ◽  
Vol 65 (2) ◽  
pp. 471-484 ◽  
Author(s):  
Tiejun Zhang ◽  
Sandya Kesoju ◽  
Stephanie L. Greene ◽  
Steven Fransen ◽  
Jinguo Hu ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Drought Tolerance ◽  
Medicago Sativa ◽  
Drought Resistance ◽  
Phenotypic Variation ◽  
Medicago Sativa L
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