Robustness in the mineral supply from temporary grasslands

Høgh‐Jensen, Henning; Søegaard, Karen

doi:10.1080/09064710.2011.577443

Cited by 10 publications

(7 citation statements)

References 34 publications

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“…These findings are in agreement with the studies of (Lindstrom [30]) who reported that grass-legume mixture plots had higher micronutrient accumulation than monoculture grass plots. These findings are also in agreement with the study of (Hogh-Jansen and Soegaard [31]), who found higher micronutrient levels in grasslegume mixture plots than pure grass stands. Various legume species harvested from different plots also showed great differences in their microelement concentration.…”

Section: Discussionsupporting

confidence: 93%

Effect of Grass-legume Intercropping on Dry Matter Yield and Nutritive Value of Pastures in the Eastern Cape Province, South Africa

Gulwa¹,

Mgujulwa²,

Beyene³

2017

ujar

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The Eastern Cape Province, South Africa is faced with inadequate quantity of livestock feed especially during the drier (winter) seasons. Forage legumes were over sown into natural grasses to determine their potential to improve feed quality and quantity. Four forage legumes namely: Trifolium vesiculosum (Arrowleaf clover), Lespedeza cuneata (sericea lespedeza) , Trifolium repens (white clover) and Lotus corniculatus (birdsfoot trefoil) were intercropped with native grasses in the old arable land located in Lushington communal area in the Eastern Cape Province, South Africa. The treatments consisted of natural grasses growing in pure stands and native grasses intercropped with forage legumes grown under rain-fed conditions. Grasses and legumes were harvested for dry matter yield (DMY) once in spring 2013 (September-November), summer 2014 (December-February), autumn 2014 (March-May) and winter 2014 (June-August). Amongst the legumes, L. cuneata was more (P<0.05) productive than rest of the legumes. However, T. vesiculosum was the least (P<0.05) productive legume during the four seasons. Total dry matter (TDM) yield was higher (P<0.05) during summer and lower during winter seasons, respectively. Grasses harvested in autumn had the highest (P<0.05) 12% crude protein (CP) than those harvested in winter which, had the lowest 4.6% CP content. Similarly, all legume pastures harvested in spring had superior (p<0.05) 10.8% CP, while those harvested in winter had the least 3.5% CP. Likewise, forages harvested during the wet seasons (i.e. autumn and or summer) had improved (P<0.05) herbage micro nutrient content than those harvested in the drier (winter) season. Results of the study indicated that overall total dry matter yield of grass-legume mixtures was higher than that of sole natural grasses, with grasses constituting the major component of the herbage yield. Results from this study also indicated that forages produced in wetter seasons had superior biomass yield and nutritive value, respectively.

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Section: Discussionsupporting

confidence: 93%

Effect of Grass-legume Intercropping on Dry Matter Yield and Nutritive Value of Pastures in the Eastern Cape Province, South Africa

Gulwa¹,

Mgujulwa²,

Beyene³

2017

ujar

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“…(), Hejcman et al . () and Høgh‐Jensen and Søegaard () and as estimated by Whitehead (). However, the return of animal manure and urine (Bengtsson et al ., ) and use of macronutrient fertilizers (Bengtsson et al ., ; Hejcman et al ., ) will also replace micronutrients removed in conserved feed or by grazing animals.…”

Section: Discussionmentioning

confidence: 99%

Micronutrient concentrations in common and novel forage species and varieties grown on two contrasting soils

Lindström

Frankow‐Lindberg

Dahlin

et al. 2012

Grass and Forage Science

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We investigated differences between forage species with regard to micronutrients that are essential to sustain livestock health. Five grasses (timothy, perennial ryegrass, meadow fescue, tall fescue and cocksfoot), three legumes (red clover, white clover and birdsfoot trefoil) and four forbs (ribwort plantain, salad burnet, caraway and chicory) were grown on one micronutrient-poor/low pH soil and one micronutrient-rich/high pH soil (outdoor pot experiment). In addition, six grasses (timothy, perennial ryegrass, meadow fescue, tall fescue, Festulolium hybrid and cocksfoot) and one legume (red clover) were field-grown on the micronutrient-poor soil. Of the twelve pot-grown species, herbage of chicory, red clover and white clover generally had the highest micronutrient concentrations (maximum Co, Cu, Fe and Zn concentrations were 0Á23, 9Á8, 233 and 109 mg kg À1 DM, respectively), except for Mo, which was highest in the clovers (10Á6 mg kg À1 DM), and Mn, which was highest in cocksfoot (375 mg kg À1 DM). Soil type had the strongest effect on plant Mo and Mn concentrations. We also investigated differences in micronutrients between varieties, but they were generally few and negligible. The results indicate that choice of forage species is of major importance for micronutrient concentrations in herbage and that soil type exerts a major effect through pH. Forage of chicory, red clover and white clover generally met the requirements of high-yielding dairy cows with regard to most micronu-trients; therefore, diversification of seed mixtures so as to include these species could increase micronutrient concentrations in forage.

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“…The relative concentrations of different botanical groups can be compared and the relative trends in our data are similar to other studies. For example, Lindström et al [17] found Mn to also be highest in grasses and Co, Cu, Fe and Zn to be highest in legumes, while in the complete sward a decrease in the proportion of grass in favour of legumes and forbs is associated with an increase in mineral concentrations, with the exception of Mn [22,31,37]. These previous studies have predominantly been in Scandinavia or Australasia, and our data show that the same relationships between botanical groups occur, despite the use of different species and cultivars, and with different soils and climates.…”

Section: Inter-and Intra-botanical Group Variabilitymentioning

confidence: 99%

“…Therefore, it is difficult to make a comparison of mineral concentrations in plant species and botanical groups across different studies. Much of the available data on plant mineral concentrations are from Scandinavia [17,22,23], and it is unknown how applicable the data are elsewhere due to differences in plant cultivars, soils and climate. Furthermore, many of these studies overlook I and Se (despite these being some of the most deficient minerals in livestock systems), primarily due to the additional challenge of their more complex analysis compared to other minerals.…”

Section: Introductionmentioning

confidence: 99%

The Mineral Composition of Wild-Type and Cultivated Varieties of Pasture Species

et al. 2020

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Mineral deficiencies in livestock are often prevented by using prophylactic supplementation, which is imprecise and inefficient. Instead, the trend for increased species diversity in swards is an opportunity to improve mineral concentrations in the basal diet. Currently, there are limited data on the mineral concentrations of different species and botanical groups, particularly for I and Se, which are among the most deficient minerals in livestock diets. We grew 21 pasture species, including some cultivar/wild type comparisons, of grasses, legumes and forbs, as single species stands in a pot study in a standard growth medium. Herbage concentrations of Co, Cu, I, Mn, Se, Zn, S, Mo and Fe showed no consistent differences between the wild and cultivated types. There were significant differences between botanical groups for many minerals tested. Forbs were highest in I and Se, grasses in Mn and legumes in Cu, Co, Zn and Fe. Comparing species concentrations to recommended livestock intakes, the forbs Achillea millefolium, Cichorium intybus and Plantago lanceolata, and the legumes Medicago lupulina, Trifolium hybridum and Lotus corniculatus, appear to be good sources of Co, Cu, I, Se and Zn. Further work is required to ensure these results are consistent in multispecies mixtures, in different soil types and in field trials.

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Robustness in the mineral supply from temporary grasslands

Cited by 10 publications

References 34 publications

Effect of Grass-legume Intercropping on Dry Matter Yield and Nutritive Value of Pastures in the Eastern Cape Province, South Africa

Effect of Grass-legume Intercropping on Dry Matter Yield and Nutritive Value of Pastures in the Eastern Cape Province, South Africa

Micronutrient concentrations in common and novel forage species and varieties grown on two contrasting soils

The Mineral Composition of Wild-Type and Cultivated Varieties of Pasture Species

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