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12 September 2019 | Story Ruan Bruwer | Photo Varsity Sports
Netball
Jana Scholtz, goal defender and playing in her first year as a regular starter, has been a solid performer for the Kovsie netball team in Varsity Netball.

The building blocks are starting to form a solid basis from where Kovsies can launch an attack to defend the Varsity Netball title they won in 2018. This is according to Karin Venter, one of the team’s assistant coaches.

After losing their first encounter to Tuks, they registered wins over the University of Johannesburg, Tshwane University of Technology, and the North-West University. The match against the Maties in Bloemfontein on 23 September 2019 – the last in the group stage, should determine which of the two teams will book a home semi-final along with Tuks.

“Yes, that is the crucial one,” said Venter, the team’s defensive coach. Her counterpart at the Maties is Adéle Niemand, with whom Venter combined as defenders at Kovsies for several matches in the mid-2000s. Apart from the Maties, the women of the University of the Free State still have to face the Madibaz and the University of the Western Cape (both in Pretoria on 15 and 16 September 2019).

“The combinations are starting to form a unit and our confidence is on the increase. Now we are looking for consistency in our performances.”

According to Venter, they were hit hard by goalkeeper Ané Retief’s injury, which kept her out of the first two matches. This meant that they had to start against Tuks with a first-year student, Chanel Vrey.

“It was tough, but I’m impressed with the way in which she, Ancia Pienaar, and Jana Scholtz – who are all youngsters – stepped up.”

Venter is responsible for the analyses and recons to assist players.

“The programme we are using provides us with all the required footage. You can make notes on it and send these clips to players, which means you don’t have to sit next to a player to explain something. We also provide them with notes and sketches of opponents’ playing patterns, which they must work through as part of their preparation.”

News Archive

Well-established root system important for sustainable production in semi-arid grasslands
2015-02-24

Plot layout where production and root studies were done
Photo: Supplied

The importance of a well-established root system for sustainable production in the semi-arid grasslands cannot be over-emphasised.

A study of Prof Hennie Snyman from the Department of Animal and Wildlife and Grassland Sciences at the University of the Free State is of the few studies in which soil-water instead of rainfall has been used to estimate above- and below-ground production of semi-arid grasslands. “In the past, plant ecological studies have concentrated largely on above-ground parts of the grassland ecosystem with less emphasis on root growth. This study is, therefore, one of the few done on root dynamics in drier areas,” said Prof Snyman.

The longevity of grass seeds in the soil seed bank is another aspect that is being investigated at present. This information could provide guidelines in grassland restoration.

“Understanding changes in the hydrological characteristics of grassland ecosystems with degradation is essential when making grassland management decisions in arid and semi-arid areas to ensure sustainable animal production. The impact of grassland degradation on productivity, root production, root/shoot ratios, and water-use efficiency has been quantified for the semi-arid grasslands over the last 35 years. Because of the great impact of sustainable management guidelines on land users, this study will be continuing for many years,” said Prof Snyman.

Water-use efficiency (WUE) is defined as the quantity of above- and/or below-ground plant produced over a given period of time per unit of water evapotranspired. Sampling is done from grassland artificially maintained in three different grassland conditions: good, moderate, and poor.

As much as 86, 89 and 94% of the roots for grasslands in good, moderate and poor conditions respectively occur at a depth of less than 300 mm. Root mass is strongly seasonal with the most active growth taking place during March and April. Root mass appears to be greater than above-ground production for these semi-arid areas, with an increase in roots in relation to above-ground production with grassland degradation. The mean monthly root/shoot ratios for grasslands in good, moderate, and poor conditions are 1.16, 1.11, and 1.37 respectively. Grassland degradation lowered above- and below-ground plant production significantly as well as water-use efficiency. The mean WUE (root production included) was 4.79, 3.54 and 2.47 kg ha -1 mm -1 for grasslands in good, moderate, and poor conditions respectively.

These water-use efficiency observations are among the few that also include root production in their calculations.

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