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  1. Evaluation of five Pecan cultivars [<em>Carya illinoensis</em> (Wang.) R. Koch] for yield, precocity, alternate bearing, leaf:nut ratio and length of growing season in the Transvaal middleveld

    Evaluation of five Pecan cultivars [Carya illinoensis (Wang.) R. Koch] for yield, precocity, alternate bearing, leaf:nut ratio and length of growing season in the Transvaal middleveld

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: T.K. Haulik --- , Republic of South Africa L.C. Holtzhausen --- Department of Horticultural Science, Republic of South Africa
    The average yield of five pecan cultivars over a 22-year period was 25, 1 kg per tree per annum. The extrapolated average yield for the last 10 years of bearing was 2 642 kg ha-1, which compares favourably with results...
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  2. Evaluation of five pecan (<em>Carya illinoensis</em>) cultivars for nut quality

    Evaluation of five pecan (Carya illinoensis) cultivars for nut quality

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: T.K. Haulik --- , Republic of South Africa L.C. Holtzhausen --- Department of Horticultural Science, Republic of South Africa
    Five pecan [Carya illinoensis (Wang.) K. Koch] cultivars, commercially recommended for the Transvaal middleveld areas were evaluated for nut quality (nut size, kernel %, kernel colour, nut shape and shell thickness). New South African grading standards are suggested for nut...
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  3. Megagametogenesis and embryology of the pecan (<em>Carya illinoensis</em>)

    Megagametogenesis and embryology of the pecan (Carya illinoensis)

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: T.K. Haulik --- , Republic of South Africa L.C. Holtzhausen --- Department of Horticultural Science, Republic of South Africa
    A timetable is presented for megasporogenesis, megagametogenesis, embryo and endosperm development of the pecan [Carya illinoensis (Wang.) K.Koch] under Transvaal Middleveld conditions. Differences between seasons and cultivars were minimal. The fertilized endosperm nucleus was observed about 5 to 7 days...
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  4. Anatomy of staminate flower ontogeny of the pecan as determined by scanning electron microscopy

    Anatomy of staminate flower ontogeny of the pecan as determined by scanning electron microscopy

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: T.K. Haulik --- , Republic of South Africa L.C. Holtzhausen --- Department of Horticultural Science, Republic of South Africa
    A new method of investigation for hard winter buds of the pecan [Carya illinoensis (Wang.) K. Koch] was developed and used successfully. The development of pecan catkins under summer rainfall conditions at Roodeplaat followed the grouping of cultivars according to...
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  5. Cape Parrot <em>Poicephalus robustus</em> diet in a nutshell: use of indigenous and exotic plants in the Eastern Cape province, South Africa

    Cape Parrot Poicephalus robustus diet in a nutshell: use of indigenous and exotic plants in the Eastern Cape province, South Africa

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Kirsten Wimberger --- , South Africa Kate F Carstens --- , South Africa Johann C Carstens --- , South Africa Francis R Brooke --- , South Africa Fanie Rautenbach --- Cape Peninsula University of Technology, South Africa
    The success of conservation action for a threatened species can be improved by knowledge of its feeding and breeding requirements. The Cape Parrot Poicephalus robustus is a threatened endemic restricted to patches of mistbelt forest in South Africa. Cape Parrots...
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