Forage Production of Vernal Alfalfa Under Differential Cutting and Phosphorus Fertilization<sup>1</sup>

Parsons, J. L.; Davis, R. R.

doi:10.2134/agronj1960.00021962005200080004x

Cited by 15 publications

(10 citation statements)

References 3 publications

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“…Averaged over the 3 yr, DM yield was 11% greater in plots harvested at early flower than in plots harvested at early bud (Table 7). These results were consistent with those reported by other studies that documented yield advantage for less frequently harvested alfalfa (Parsons and Davis, 1960; Kust and Smith, 1961; Kallenbach et al, 2002).…”

Section: Resultssupporting

confidence: 93%

Alfalfa Yield and Morphology of Three Fall‐Dormancy Categories Harvested at Two Phenological Stages in a Subtropical Climate

Rimi

Macolino

Leinauer³

et al. 2010

Agronomy Journal

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Alfalfa (Medicago sativa L.) is the most important hay crop used in the dairy industry of the Po Valley, Italy, characterized by a subtropical climate with hot, humid summers and cool winters. Information is lacking as to selecting fall dormancy (FD) varieties adapted to the region and their response to intense harvest regimes. A 3-yr study was conducted to investigate the effect of two harvest regimes based on phenological stage (early bud and early flower) and three FD categories on productivity, canopy height, and leaf to stem proportion. Cultivars with FD ratings of 7.5 (less nondormant), 8.5 (nondormant), and 10.5 (very nondormant) were seeded in April 2005 at the experimental farm of Padova University in Legnaro, Italy. The experimental design was a randomized complete block in a split-plot arrangement. Canopy height and dry matter (DM) yield were measured at each harvest. Subsamples were collected to determine leaf area index (LAI), stem silhouette area index (SAI), and leaf dry matter to stem dry matter ratios (LSR). Nondormant cultivars had higher DM yield (18.2 Mg ha−1) than less nondormant (17.1 Mg ha−1) and very nondormant cultivars (16.9 Mg ha−1). Harvesting at early bud decreased DM yield by 11% compared to early flower. The FD categories had no effect on LAI/SAI and LSR ratios, however harvesting at early bud increased both ratios by 12.0 to 12.5%. Producers in subtropical climates may obtain alfalfa hay with a high portion of leaves at a reasonable yield from the three tested FD categories by cutting alfalfa at early bud stage

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Section: Resultssupporting

confidence: 93%

Alfalfa Yield and Morphology of Three Fall‐Dormancy Categories Harvested at Two Phenological Stages in a Subtropical Climate

Rimi

Macolino

Leinauer³

et al. 2010

Agronomy Journal

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“…Overseas research produced similar results although maximum 38 production was achieved at the full bloom stage (Davies & Harvard. 1960;Parsons & Davies, 1960;Kust & Smith, 1961). Smith (1972), reviewing cutting investigations based on stage of development, considers that mowing at the 10% bloom stage provides the best compromise in terms of acceptable herbage, nutrient yield and stand persistence.…”

Section: Discuss/onmentioning

confidence: 99%

The effect of stage and height of cutting on Lucerne

Birch

Cumming

Muzzell

1975

Proceedings of the Annual Congresses of the Grassland Society o

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The effect of stage and height of cutting on the herbage yield of irrigated lucerne was investigated over four years at the Dohne Research Institute. Five cutting stages were used, namely when the lucerne was 12, 24 and 36 cm high as well as at 10% and full bloom stages. Each stage was harvested at four cutting (stubble) heights, namely at ground level and 4, 8 and 12 cm above ground level. The herbage yield increased markedly with stage of development and reached a maximum at the 10% and full bloom stages with the former producing the better quality herbage. Cutting heights from 0 to 8 cm above ground level did not materially affect the yield when cut each time the crop became 24 cm tall or at later stages of development. The 12 cm cutting height reduced the yield at the 36 cm tall and full bloom stages. UITTREKSEL Die invloed van snystadiums en-hoogtes op die hooi-opbrengs van besproeide lusern is oor vier jaar op die Dohne-navorsingsinstituut ondersoek. Die lusern is gesny wanneer hoogtes van 12, 24 en 36 cm bereik is asook op die 10% blom en vol blom-stadium. Die gewas is elke keer op vier hoogtesafgesny naamlik op die grond en 4, 8 en 12 cm bo die grondoppervlakte. Die hooi-opbrengs was opvallend hoër namate die gewas op 'n latere groeistadium gesny is. Opbrengs was die hoogste by die 10% en volblomstadia met die beste kwaliteit voer verkry op eersgenoemde snystadium. Snyhoogtes van 0 tot 8 cm bo grondoppervlakte het die opbrengs nie merkbaar beïnvloed wanneer die gewas op 'n 24 cm hoogte of latere stadium gesny is nie. Die 12 cm snyhoogte het die opbrengs verlaag by die 36 cm en volblom -stadia.

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“…Several studies documented a decline of nutritive value and increase of alfalfa productivity associated with advancing maturity from early bud to late flowering (Kallenbach et al, 2002; Coblentz et al, 2008; Brink et al, 2010). In addition, it has been shown that harvesting alfalfa frequently during the growing season may have detrimental effects on the stand persistence, determined as plants m −2 (Parsons and Davis, 1960; Macolino et al, 2002; Davies and Peoples, 2003).…”

mentioning

confidence: 99%

“…During a 2‐yr study period, Parsons and Davis (1960) found that alfalfa cultivar Vernal harvested five times per year was injured more severely in comparison to plants harvested three times yr −1 in Ohio. Similarly, subsequent studies conducted in several locations, such as Minnesota (Trimble et al, 1987; Brink and Marten, 1989), Italy (Veronesi et al, 1986; Macolino et al, 2002), Australia (Davies and Peoples, 2003), and Argentina (Ventroni et al, 2010) reported that stand density diminished over time as cutting management intensified.…”

mentioning

confidence: 99%

Fall Dormancy and Harvest Stage Impact on Alfalfa Persistence in a Subtropical Climate

et al. 2014

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Persistence of alfalfa (Medicago sativa L.) is a critical component of productivity and can be influenced by genetics and management; however the responses of fall dormancy (FD) level to harvest regimes are unclear. This study was conducted to investigate the effect of three FD categories and two phenologically based harvest regimes on stand persistence and characteristics of taproot and crown in a humid subtropical climate. Cultivars with FD ratings of 7.5 (less non-dormant), 8.5 (non-dormant), and 10.5 (very non-dormant) were seeded in April 2005 at the experimental farm density, mass of taproot (to a 15-cm depth) and crown, water soluble carbohydrate (WSC) concentration of taproots and crowns, and taproot diameter at 3-, 5-, and 15-cm depth were measured. Changing the cutting stage from early flower to early bud reduced the average stand density from 242 to 218 plants m -2 , irrespective of FD category and date. In November, plants harvested at early bud had smaller taproots and crowns compared to those harvested at early flower but generally had higher concentrations of WSC. The implications of FD category appeared secondary in comparison to harvest regime to maintain alfalfa persistence in an environment characterized by temperate winters.

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Forage Production of Vernal Alfalfa Under Differential Cutting and Phosphorus Fertilization¹

Cited by 15 publications

References 3 publications

Alfalfa Yield and Morphology of Three Fall‐Dormancy Categories Harvested at Two Phenological Stages in a Subtropical Climate

Alfalfa Yield and Morphology of Three Fall‐Dormancy Categories Harvested at Two Phenological Stages in a Subtropical Climate

The effect of stage and height of cutting on Lucerne

Fall Dormancy and Harvest Stage Impact on Alfalfa Persistence in a Subtropical Climate

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Forage Production of Vernal Alfalfa Under Differential Cutting and Phosphorus Fertilization1

Cited by 15 publications

References 3 publications

Alfalfa Yield and Morphology of Three Fall‐Dormancy Categories Harvested at Two Phenological Stages in a Subtropical Climate

Alfalfa Yield and Morphology of Three Fall‐Dormancy Categories Harvested at Two Phenological Stages in a Subtropical Climate

The effect of stage and height of cutting on Lucerne

Fall Dormancy and Harvest Stage Impact on Alfalfa Persistence in a Subtropical Climate

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Product

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Forage Production of Vernal Alfalfa Under Differential Cutting and Phosphorus Fertilization¹