No information is available on the role of allelopathy in crop rotation systems of the Western Cape Province of South Africa, where more than 100 000 ha are under threat from herbicide-resistant rye grass. A study which ...

Most of the fields planted with clonal tea in Malawi are deficient in micronutrients. This was evident in leaf analysis data collected in 2007 from 170 mature clonal tea fields of some of the tea estates in Malawi, which ...

Avocado is a globally significant fruit tree crop. However, Phytophthora root rot, caused by Phytophthora cinnamomi (Pc), is the primary limitation to production in most countries. This soil borne oomycete pathogen infects ...

Premature and excessive leaf abscission during flowering time in the late avocado (Persea americana Mill.) cultivar ‘Ryan’ is a considerable problem for avocado growers. They are especially concerned that premature and ...

An important part of developing sound water management strategies for crops is to identify phenological stages which are sensitive and insensitive to water stress in terms of yield and quality. This is particularly important ...

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High yielding apple orchards (>100 t ha-1) are becoming the norm in South Africa and it is assumed that as yields increase, transpiration rates will also increase. This raises the need for improved knowledge on water use ...

The use of coated seed to establish crops is not a novel practice. Seed coatings have been used on small seeded crops to improve the handling ability by making the seed unit larger and heavier. Producers can therefore ...

Increased demand for sustainably produced, healthy, and nutritious food has seen certain segments of the world agricultural sector flourish in the past few decades. The macadamia nut industry in particular has expanded at ...

Please read the abstract in the dissertation.