Nutritive value of lucerne. I. Preliminary studies of yield, composition and nutritive value (Season 1932)

Woodman, H. E.

doi:10.1017/s0021859600053296

Cited by 15 publications

(8 citation statements)

References 19 publications

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“…There is an extensive literature on some of the common minerals, but relatively little data on the composition at advancing stages of growth. The data of Woodman, Evans & Norman (1933, 1934 and Thomas, Thompson, Oyenuga & Armstrong (1952) from Britain, and Van Riper & Smith (1959) from Wisconsin are exceptions.…”

Section: Discussionmentioning

confidence: 87%

The assessment of herbage legume varieties. II. In vitro digestibility, water soluble carbohydrate, crude protein and mineral content of primary growth of clover and lucerne

1966

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The primary growth of eight varieties of three species–white clover (3), red clover (4) and lucerne (1)–was sampled at fortnightly intervals and the percentage dry matter, in vitro digestibility, crude protein, water soluble carbohydrates, P, Ca, K, Na and Mg were determined.Differences between species were nearly always significant and the general order of merit was white clover, red clover and lucerne. The exceptions were for dry-matter percentage where this order was reversed, and red clover had the lowest Na and highest Mg content.

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Section: Discussionmentioning

confidence: 87%

The assessment of herbage legume varieties. II. In vitro digestibility, water soluble carbohydrate, crude protein and mineral content of primary growth of clover and lucerne

1966

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“…A marked seasonal decline in potassium concentration has many times been demonstrated in legumes and grasses grown to maturity. Evidence such as that of Woodman et al ( 1933) with lucerne cut at intervals for hay indicates that this seasonal effect is dominantly a stage-of-growth effect, as the pattern of changes in potassium levels is repeated in the new growth after each cut. With pastures under grazing, the growth interval is small and successive samples represent mainly new growth, commencing each time from the date of the previous grazing.…”

Section: Seasonal Variation Zn Potassium Contentmentioning

confidence: 99%

Potassium deficiency in pastures

McNaught¹

1958

New Zealand Journal of Agricultural Research

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Legumes and grasses were analysed from two series of trials (a) pure species trials (b) mixed pastures from which legumes and grasses were dissected out for separate analysis.In the pasture trials on Horotiu sandy loam under cow grazing, yield responses to potassium fertilisers commenced in September, reached a maximum in summer (November to January), declined in autumn and were at a minimum in winter. The appearance of deficiency symptoms in white and red clovers corresponded to this pattern of growth responses which followed the seasonal growth cycle. Symptoms were not detected in winter.On deficient soils, uptake responses to potassium fertilisers were appreciable over the whole range from severe deficiency to adequacy, but were small or not detectable on soils with high available potassium.Large differences in analytical levels were found in different tissues of plants well supplied with potassium. Differences were much smaller in potassium-deficient plants.Seasonal decline in the potassium content of pasture species in autumn may have been due mainly to differences in maturity of tissues, associated with longer intervals between grazings, and to "carbohydrate dilution".Clover leaves (leaflets plus petioles), with deficiency symptoms, showed potassium levels below 0.7 %.The critical level, or minimum level for near-maximum growth, was approximately 1.8% K for whole leaves (immature plus mature) of white and red clover at grazing height. The value for ryegrass was approximately 1.6% K and similar levels were indicated for cocksfoot and Yorkshire fog. Sweet vernal and especially paspalum appear to have much lower needs. The gap between the maximum level in clover leaves showing symptoms and the apparent critical level in relation to yield may be partly due to (a) differences in maturity and type of tissues analysed, (b) soil heterogeneity, (c) other limiting growth factors.In pastures on potassium-deficient soils, grasses are more efficient at securing their potassium needs than associated clovers. When ryegrass-dominant pastures are analysed for the purpose of predicting responses of the clover component to potassium fertiliser, higher reference levels may be required than for pure clover stands.

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“…The amount of phosphoric acid, on the other hand, was but moderate (0-73 per cent.). The significance of these data will be better appreciated by comparing them with similar data for pasture grass (12,13), lucerne (14) and swedes(2). Table VII indicate absence of information.…”

Section: Marrow Stem Kale and Thousand Head Kalementioning

confidence: 99%

“…During February, apart from a few slight night frosts, the weather was again mild and wet. Night frosts were encountered on the following dates during the period of the experiment: October 30, 31; November 1,2,8,13,14,20;December 17,22;January 7,8,9,10,11,12,13,16,27,28,29,30;February 6,7,8,9,10,23,24,26,27. It may be noted that the kale crops stood the winter remarkably well, and the plants remaining after the completion of the trials at the end of February were still green and healthy.…”

Section: Introductionmentioning

confidence: 99%

The composition and nutritive value of marrow stem kale and thousand head kale

1936

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The paper records the results of an investigation into the composition, digestibility and nutritive value of marrow stem kale (both unthinned and singled-out) and thousand head kale. A number of the main findings are recorded below.The average dry-matter content of unthinned marrow stem kale during September and October was 13·3 per cent. During the following January it had reached a slightly higher level, namely, 14·2 per cent. Singling out of the marrow stem kale appeared to exercise little effect on the dry-matter content of the crop. Thousand head kale, with an average dry-matter content of 15·8 per cent., is significantly richer in dry matter than the marrow stem kale, although this advantage was offset by the lower yield, in terms of green matter, given per acre by the thousand head kale.

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Nutritive value of lucerne. I. Preliminary studies of yield, composition and nutritive value (Season 1932)

Cited by 15 publications

References 19 publications

The assessment of herbage legume varieties. II. In vitro digestibility, water soluble carbohydrate, crude protein and mineral content of primary growth of clover and lucerne

The assessment of herbage legume varieties. II. In vitro digestibility, water soluble carbohydrate, crude protein and mineral content of primary growth of clover and lucerne

Potassium deficiency in pastures

The composition and nutritive value of marrow stem kale and thousand head kale

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