Articles by Author: J N Clatworthy

Search results for J N Clatworthy

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  1. Establishment of <em>stylosanthes guyanensis</em> in marandellas sandveld

    Establishment of <em>stylosanthes guyanensis</em> in marandellas sandveld

    The feasibility of establishing perennial forage legumes in veld has been investigated at Grasslands Research Station, Marandellas. Of the species tested, Stylosanthes guyanensis (stylo) appeared most suitable.
  2. An examination of methods of sampling herbage from small‐plot cutting trials

    An examination of methods of sampling herbage from small‐plot cutting trials

    Three experiments were conducted to measure variability in sampling for dry matter and crude protein determination in small‐plot cutting trials.
  3. Introduction and preliminary screening of pasture legumes at Marandellas, Rhodesia, 1967–73

    Introduction and preliminary screening of pasture legumes at Marandellas, Rhodesia, 1967–73

    Between 1967 and 1973 almost 300 legume introductions were screened in the nursery at Grasslands Research Station. The legumes were grown in unreplicated beds and their characteristics noted. Records included growth habit, vigour, nodulation, time of flowering, seed set, winter...
  4. Growth of <em>Stylosanthes</em> spp. as spaced plants at eight sites in Rhodesia

    Growth of <em>Stylosanthes</em> spp. as spaced plants at eight sites in Rhodesia

    As part of a programme to test the suitability of Stylosanthes spp. for Rhodesian conditions, plants of seven strains covering three species of this genus were grown at eight sites in Rhodesia. The seven strains were 5. guya‐nensis (erect, intermediate...
  5. A comparison of irrigated grass‐clover and nitrogen‐fertilized grass pastures for beef production

    A comparison of irrigated grass‐clover and nitrogen‐fertilized grass pastures for beef production

    An area of irrigated sandveld was planted in December 1971 with Panicum coloratum and fenced into eight paddocks, four of which were later seeded with Trifolium semipilosum. The P. coloratum grew poorly and the pastures were later interplanted with Cynodon...
  6. Effects of legume reinforcement of veld on the performance of beef steers

    Effects of legume reinforcement of veld on the performance of beef steers

    To measure the effect of legume reinforcement of veld on animal production, a 24 ha block of reverted granite sandveld dominated by Hyparrhenia filipendula was fenced into 8 equal‐sized paddocks, 4 of which were seeded with legumes. Two paddocks were...
  7. Screening of legumes for veld reinforcement <em>peulgewastoets vir veld verbetering</em>

    Screening of legumes for veld reinforcement <em>peulgewastoets vir veld verbetering</em>

    In order to test their suitability for veld reinforcement, Desmodium intortum, D. sandwiceme, D. uncinatum,Glycine wightii, Listia heterophylla, Lotononis bainesii, Macroptilium atropurpureum, Stylosanthes frutícosa, S. humilis and three strains of S. guianensis were seeded in December 1970 in disced veld...
  8. Effects of eight grazing systems on carcass mass gains of steers grazing irrigated <em>Cynodon aethiopicus</em> pastures

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Eight grazing systems were compared on irrigated Cynodon aethiopicus pastures which received 650 kg N, 36 kg P and 200 kg dolomitic limestone/ha, annually. There were either one, two, three, six or 18 paddocks in the systems, the single paddock...