Results 191 to 200 of about 11,693 (222)
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NITROGENOUS FERTILIZATION OF ITALIAN RYEGRASS IN SPRING
Grass and Forage Science, 1968A series of experiments in eastern Scotland, carried out over a 7–year period, on the application of N fertilizers to Italian ryegrass for producing early spring grass, indicated that maximum yields are likely to be produced if the fertilizer is applied not later than the middle of March in most seasons.
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The Uptake of Gaseous Ammonia by the Leaves of Italian Ryegrass
Journal of Experimental Botany, 1986Lockyer, D. R. and Whitehead, D. C. 1986. The uptake of gaseous ammonia by the leaves of Italian ryegrass.—J. exp. Bot. 37: 919-927. Plants of Italian ryegrass (Lolium multiflorum Lam.) grown in soil with two rates of added 15N-labelled nitrate were exposed, in chambers, for 40 d to NH3 in the air at concentrations of 16,118 and 520 fig m " 3.
D. R. LOCKYER, D. C. WHITEHEAD
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PRODUCTIVITY OF ITALIAN AND PERENNIAL RYEGRASS MIXTURES
Grass and Forage Science, 1971ABSTRACTItalian ryegrass cv. Leda and perennial ryegrass cv. Presto were sown alone and in five mixtures containing different proportions of viable seed and compared with hybrid ryegrass cv. Manawa and Italian ryegrass cv. S22. Yields and herbage composition were measured five times in 1962 and 1963, with particular reference to the contribution from ...
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Productivity of mixtures of Italian ryegrass and red clover
Grass and Forage Science, 1983AbstractTwo red clover (Trifolium pratense) cultivars, Red Head (tetraploid) and Kuhn (diploid), were sown at a seed rate of 13 kg ha−1 either alone or in mixture with Italian ryegrass (Lolium multiflorum) cv. RvP sown at seed rates of 10, 15, 20 or 30 kg ha−1.
M. S. CAMLIN +2 more
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The response of Italian ryegrass to applied nitrogen in the natal midlands
Journal of the Grassland Society of Southern Africa, 1989Nitrogen (N) fertilizer was applied to irrigated Italian ryegrass (Lolium multiflorum cv Midmar) pastures at varying rates over two seasons on three sites. Soils series on these sites were Metz, Griffin and Katspruit. Total N application rates ranged from zero to 1 080 kg N/ha/yr.
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A comparison of methods of establishing perennial and Italian ryegrasses
Grass and Forage Science, 1981AbstractAn experiment extending over a 2½‐year period from June 1976 to October 1978 assessed the effect on herbage yield of method of establishment, species and level of N application.Perennial ryegrass cv. Gremie and Italian ryegrass cv. RvP were established by broadcasting or drilling into cultivated ground or by direct‐drilling, using a Howard ...
P. W. BARTHOLOMEW +2 more
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Triploid hybrids between Italian and perennial ryegrass
Euphytica, 1975Triploids (2n=21) and aneuploids (2n=19, 20, 22) were obtained through in vitro culture of immature seeds from reciprocal crosses between diploid and tetraploid ryegrass. Tetraploid x diploid crosses were more successful than their reciprocals. Triploids and aneuploids had a high multivalent frequency at meiotic metaphase and were highly vigorous.
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Nitrogen requirements for italian ryegrass seed production
1993Italian ryegrass cv. Grasslands Tama was grown outside in pots given solutions containing concentrations of nitrogen (N) ranging from 32.5 to 910 μg/g; all other nutrients were adequately supplied. Plants were harvested during active vegetative growth (spring) or when seed was ripe.
J. S. Rowarth, W. J. Archie, D. B. Baird
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Tetraploid Italian ryegrass (Lolium multiflorum Lam.)
Euphytica, 19581. Some preliminary experiments are described with C2- and C3-generations of tetraploid Italian ryegrass. In all cases the tetraploids had a lower dry matter content than the diploids. 2. A C3-generation produced by mass selection equalled or surpassed the diploid mother strains in dry matter yield in some small experiments on several ...
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