Extractable soil phosphorus threshold values for dryland maize on the South African Highveld
نویسندگان
چکیده
منابع مشابه
Parasites of domestic and wild animals in South Africa. V. Helminths in sheep on dryland pasture on the Transvaal highveld.
The seasonal incidence of helminth infestation on a farm in the Transvaal Highveld was determined by the slaughter of tracer lambs exposed on pasture for periods of approximately 6 weeks. Haemonchus contortus, the most prevalent nematode, was recovered in the greatest numbers from January--May 1974. Peak counts of Ostertagia circumcincta were made during March and April 1974 and in January 1975...
متن کاملCrop Residue Effects on Soil Environment and Dryland Maize and Soya Bean Production
Power, J.F., Wilhelm, W.W. and Doran, J.W., 1986. Crop residue effects on soil environment and dryland maize and soya bean production. Soil Tillage Res., 8 : 101-111. The research reported here provides data on the effects of crop residues o n the surface of no-till soil upon the soil environment and resulting biological activity, including crop growth. For maize (Zea mays L.) and soya bean [Gl...
متن کاملResin-Extractable Phosphorus, Vanadium, Calcium and Magnesium as Factors in Maize (Zea mays L.) Yield
Resin extraction of soil permits evaluation of ratios of readily extracted elements and correlation of concentrations obtained with crop yield. This information provides guidance on potential genotype selection and fertility management. Two hybrids of maize (Zea mays L.), designated 2292 and 3895, were grown annually in rotational succession on a 3.2-ha site with soybean (Glycine max L.) and wh...
متن کاملA study of preslaughter pig handling and stunning in selected South African Highveld Region abattoirs.
The study hypothesis was that pre-slaughter handling is not conducted in such a way that pigs can be considered humanely slaughtered, nor is it conducive to promoting those properties of fresh meat that could enhance pork quality. The 1st phase of the investigation was aimed at confirming the present compliance level within the prescribed norms. To this end the importance of stunning induction ...
متن کاملNormal values for haemoglobin concentration and red cell indices in preschool children on the Highveld.
Data on haemoglobin concentration, red cell count, packed cell volume, mean cell volume, mean cell haemoglobin and mean cell haemoglobin concentration for 'normal' children aged 1-4 years living on the Highveld (altitude 1400-1800 m) are presented in yearly age groups. The children were defined as normal on the basis of having growth attainment and iron, folate and vitamin B12 nutrition within ...
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ژورنال
عنوان ژورنال: South African Journal of Plant and Soil
سال: 2007
ISSN: 0257-1862,2167-034X
DOI: 10.1080/02571862.2007.10634779