Studies on Growth and Development in Lolium: I. Relation of the Annual Habit to Head Production Under Various Systems of Cutting

Cooper, J. I.; Saeed, Saba

doi:10.2307/2256607

Cited by 34 publications

(18 citation statements)

References 9 publications

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“…Unfortunately, no quantitative information is available from the present experiment to prove this point, but if allowance is made for differences in latitude and climate it would appear to be in agreement with results quoted by Tayler (1957) from studies made by Langer. Cooper & Saeed (1949) have shown that the differentiation of the flowering shoot with its accompanying low number of leaves limits the number of axillary buds from which tillers can arise and consequently reduces the rate of tiller production and leafy growth. Thus lax-cutting, through allowing almost uninterrupted development of the flowering shoot in the early part of the season, will reduce tiller production, and cause a drain in the root reserves of the grass plant.…”

Section: Discussionmentioning

confidence: 99%

Studies on the cutting management of grass-clover swards. I. The effect of varying the closeness of cutting on the yields from an established grass-clover sward

Reid

1959

J. Agric. Sci.

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Experiments reported by Holmes (1948Holmes ( , 1949Holmes ( , 1951a and by Holmes & MacLusky (1954, 1955 have provided much valuable information on the fertilizer aspects of the intensive production of herbage for crop drying. A fairly standard management was applied throughout these experiments, and little attention was paid to the possible modifying influence of cutting management systems on the response of the grass-clover sward to fertilizer treatment. The management consisted of cutting the herbage four or five times per season at the long leafy stage with a reciprocating-blade mower. Jones (1933) conclusively demonstrated in a series of experiments that the balance of grass and clover in a sward can be altered by the particular grazing technique adopted. Since this undoubtedly applies under a cutting management also, studies were begun at the Hannah Institute in 1954 on the reaction of the grass-clover sward to varying cutting systems.In the experiment described in this paper the effects on the sward of cutting to two heights above ground level were compared under two cutting frequencies, and six fertilizer nitrogen treatments were superimposed. The results relating to the effects of the treatments on the clover fraction of the sward in this experiment have been reported in detail elsewhere (Reid, 1958) and this paper deals mainly with the overall reaction of the sward to the treatments. EXPERIMENTALThe experiment began in 1954 on a perennial ryegrass sward in its fourth harvest year. This sward proved to have an unevenly distributed clover population, so the experiment was transferred to another site in the spring of 1955. The sward on this second site was also perennial rye-grass dominant, but it was only in its third harvest year, and it had a much more uniformly distributed clover population than the sward on the first site. The experiment was continued for two seasons on the second site.

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Section: Discussionmentioning

confidence: 99%

Studies on the cutting management of grass-clover swards. I. The effect of varying the closeness of cutting on the yields from an established grass-clover sward

Reid

1959

J. Agric. Sci.

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“…In L olium, t he variatio n o r head ing behavior was suggested to be related to pere nni al ity in flu enc ing the seaso nal productivity of the he r bage yield (Cooper and Saeed, 1949;Sato and Goto, 1980). The ph ase e hange in the tiller systems is rela ted to yield com pone nts as reported in rice (Kataya ma, 195 1;Nemoto et a l., 1995).…”

Section: Discussionmentioning

confidence: 92%

Developmental Fates of Axillary Buds as a Major Determinant for the Pattern of Life History inLolium

Onishi

Sano

Nakashima

2003

Plant Production Science

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“…The poor survival of plants of false perennial ryegrass in the field during summer is considered to be associated with their very strong change-over to the reproductive phase of development early in the summer (Cooper and 'Saeed 1949). The stronger that change-over, the more drastic are the reductions in the activity of roots and the formation of new tillers, both of which make it more difficult for plants to resume vegetative development, particularly under environmental stress.…”

Section: Influence Of Shadingmentioning

confidence: 99%

Factors influencing survival of strains of ryegrass during the summer

Lucanus

Mitchell

Pritchard³

et al. 1960

New Zealand Journal of Agricultural Research

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SummaryThe influence of levels of temperature, soil moisture, soil nitrogen status, and of light intensity on the survival of New Zealand strains of ryegrass (Lolium spp.) was examined.It was found that not only was the survival of plants reduced bv soil moisture stress (pF 3.4-4.2 compared with pF 2.6-3.0) and high temperature (80°F compared with 65°F), but also that survival under the low moisture or high temperature condition was much less when there was a high level of nitrogen in the soil. The various effects were additive. In general the survival of plants of perennial ryegrass was significantly better than that of plants of short-rotation and Italian ryegrass.A reduction of light intensity to 20-25% of full daylight also adversely affected survival, particularly when it occurred in conjunction with high temperatures.

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Studies on Growth and Development in Lolium: I. Relation of the Annual Habit to Head Production Under Various Systems of Cutting

Cited by 34 publications

References 9 publications

Studies on the cutting management of grass-clover swards. I. The effect of varying the closeness of cutting on the yields from an established grass-clover sward

Studies on the cutting management of grass-clover swards. I. The effect of varying the closeness of cutting on the yields from an established grass-clover sward

Developmental Fates of Axillary Buds as a Major Determinant for the Pattern of Life History inLolium

Factors influencing survival of strains of ryegrass during the summer

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