Latest News Archive

Please select Category, Year, and then Month to display items
Categories
UFS News Media Release Research
Years
2017 2018 2019 2020 2021 2022 2023 2024
Months
January February March April May June July August September October November December
Previous Archive
20 August 2018
WomenofKovsies Kesa praises the most important woman in her life
Kesa Molotsane, top Kovsies athlete says much of her success is thanks to the amazing backing of her mother Shani.
Most of Kesa Molotsane’s achievements on the athletic track and road can be attributed to the tireless support of her mother, Kesa says.  

“It might sound like a cliché, but my mother has taught me so much and I have learnt enough from her to survive anything. She has played the biggest role in my career and made it a priority in her life even before it (her athletics career) blossomed. 

‘My mother invested in me’

“My mother Shani has invested so much. She was present at the start and to this day she is still there for me,” Kesa says about the most important woman in her life.

Molotsane, who is doing her BA honours at the University of the Free State, has had a good 12 months behind her. She is the Spar Grand Prix 10km champion from last year, is the national student champion in the 5 000m and 10 000m and was the best South African performer at the Confederation of African Athletics African Cross Country Championships.

‘Improvement and growth motivates me’

She says improvement and growth motivates her big time. “It’s a way of weighing my efforts and hard work. I am inspired by a lot of things, depending on what situation I am in and the inspiration I’m looking for. I believe in and value inspiration in abundance.”

According to her, representing her country at the World Cross Country Championships in Uganda in March 2017 was the biggest accomplishment of her career. “It was my first time at world championships and I was the first South African to cross the finish line. I want to leave my legacy for years to come and want to touch lives using my God-given talent and gift.”

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.

We use cookies to make interactions with our websites and services easy and meaningful. To better understand how they are used, read more about the UFS cookie policy. By continuing to use this site you are giving us your consent to do this.

Accept