Information Sheets

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10.4 Spraying herbicides with low volume, controlled droplet application (CDA) systems
(SASRI, March 2022)
This paper explores the technique of controlled droplet application (CDA) for spraying herbicides. CDA generates spray droplets of optimal size for pest control. The paper highlights the advantages of CDA in terms of droplet size control, spray coverage, and drift reduction. It also discusses the potential drawbacks of very small and large droplets.
2.6 Mechanical sugarcane harvesting systems
(SASRI, Nov 1998)
This document discusses mechanical sugarcane harvesting systems. It highlights the challenges faced in finding a viable mechanized system suited to local conditions and explores semi-mechanized systems that combine manual and mechanical operations. It also provides information on different types of machines suitable for small-scale growers.
5.11 Properties of saline/sodic soils and their reclamation
(SASRI, June 2021)
This information sheet focuses on the properties of saline sodic soils and their reclamation in the context of sugarcane cultivation. It explains the negative effects of excess salts on sugarcane yields and discusses the types of salt-affected soils, namely saline soils and sodic soils. The document provides an overview of the areas in the sugar industry where serious salt problems occur and explains the challenges of salt-affected soils in supporting plant growth.
5.6 Chemigation of sugarcane: Considerations for chemical selection and fertigation guidelines
(SASRI, March 2022)
This information sheet provides an overview of chemigation, the application of agrochemicals through irrigation systems. It focuses on fertigation, the application of fertilizers to crops through an irrigation system. The document highlights the advantages of fertigation, including precise control of irrigation and fertilizer application, optimization of nutrient use, and targeted delivery of nutrients to the root zone.
6.10 Compaction
(SASRI, Feb 2022)
This paper discusses the effects of compaction on sugarcane production in South Africa. It explores how infield haulage vehicles and tillage implements compress soils, reducing pore size and increasing bulk density. These changes limit water and airflow, leading to more frequent periods of water stress and reduced yield. The paper also highlights other effects of compaction, such as reduced water infiltration, increased surface run-off potential, slower oxygen and carbon dioxide exchange, and increased waterlogging. It emphasizes the importance of managing soil compaction for sustainable sugarcane cultivation.
6.14 Subsoiling / ripping
(SASRI, July 2022)
Subsoiling and ripping, also known as deep tillage, is a practice used to break up compacted sub-surface soil layers to improve water and airflow and alleviate root limiting layers. This paper discusses the benefits of subsoiling and ripping in sugarcane production, highlighting the importance of eliminating confounding factors before embarking on the tillage operation. The paper provides examples of the factors that should be considered before and during the subsoiling operation.
6.5 Liming materials and their use
(SASRI, July 2022)
Liming materials are products that can neutralise soil acidity (See Information Sheet 6.4: Managing soil acidity). These products work by reducing the amount of hydrogen (H) ions in the soil thus lowering the pH. This reduces the amounts of toxic elements like aluminium (Al) and manganese (Mn), while improving the availability of several plant nutrients and stimulating root growth and soil biological activity. In this information sheet, the key benefits of liming are highlighted, some best practices for the use of lime are outlined and various aspects of lime quality are considered. Advantages of liming of acid soils: Increases soil pH, Lowers toxic levels of Al and Mn, Increases availability of phosphorus (and most other nutrients) for crop uptake, Adds calcium (Ca) (and sometimes magnesium (Mg)) to the soil, Improves nitrogen mineralisation and availability, Improves soil biological function, Enhances soil aggregation, Increases soil cation exchange capacity. Risk of overliming ("limeshock"): May cause an excessive increase in soil pH, Leads to
7.22 Inorganic amendments: Ash
(SASRI, June 2021)
Ash, the waste by-product from the combustion of bagasse, has properties that can be beneficially used as a soil ameliorant. This document explains the properties of bagasse ash and its potential benefits as a soil amendment. It also mentions other types of ash, such as biomass ash and coal ash, that may be available to growers.
7.5 Potassium management
(SASRI, Oct 2022)
This document discusses potassium management in sugarcane cultivation. It explains the role of potassium in sugar production, photosynthesis, and respiration in the plant. The document also describes the symptoms of potassium deficiency and the impact of excess potassium on the quality of sugarcane juice.
8.12 Nematode management
(SASRI, Sep 2020)
This information sheet focuses on the management of nematodes in sugarcane. It discusses various methods of managing nematodes, including the use of chemical nematicides, suitable variety selection, late summer-early autumn planting and harvesting, and the use of organic amendments and green manures.
9.1 Ratoon Stunting Disease (RSD)
(SASRI, March 2022)
This document provides information on ratoon stunt (RSD), a legislated disease in the sugar industry. It highlights the importance of reporting and managing RSD according to the rules prescribed by the Local Pest, Disease and Variety Control Committee. The document explains the spread of RSD through infected seedcane and farm implements, as well as its effect on yield.
9.7 Pineapple sett rot
(SASRI, March 2022)
This information sheet discusses the importance of pineapple sett rot, a disease caused by the soil-inhabiting fungus Ceratocystis paradoxa. The document explains how the disease affects pineapples, including poor germination and patchy growth, and describes the symptoms of the disease, such as red and brownish-black internal tissue. It emphasizes the conditions that favor the disease and highlights the need for diagnosis and management strategies.
Variety Disease Ratings
(August 2023)
Information Sheet Variety Disease Ratings - This document provides information on the disease ratings of different sugarcane varieties. It categorizes the varieties into five groups: Resistant, Intermediate, Susceptible, Intermediate-resistant, and Intermediate-susceptible. The document includes detailed information about the disease resistance and susceptibility of each variety.
Variety N16
(Dec 2014)
Variety N16 - This document provides information about the N16 sugarcane variety. It includes details about its parents, year of release, recommended areas for cultivation, soil and harvesting conditions. The document highlights the best features and limiting factors of N16, including its performance on humic soils in the Midlands and ratooning ability. It also mentions the variety's susceptibility to eldana and smut.
Variety N19
(Mar 2006)
Information Sheet Variety N19 provides details about the cultivation and agronomy practices of sugarcane variety N19. It includes information about its suitability for different regions, irrigation management, cane quality, sucrose yields, and agronomic characteristics.
Variety N30
(Mar 2006)
Variety N30 is suited to high potential soils and requires good irrigation management. Relative to other varieties, N30 is best harvested in the early season. N30 has high purity and a high sucrose content, with a low fibre content and low cane yield. With these good traits, N30 can be planted at some distance from the mill.
Variety N39
(Dec 2014)
Parents: CP67-411 x 75L1157. Year of release: 2002. Permitted Pest, Disease and Variety Control Areas: Felixton, Entumeni, Amatikulu, North Coast, Midlands North, Midlands South, Sezela, Umzimkulu. Recommended for planting under moderate to low potential conditions along the coast and hinterland on a 12 to 18 month cutting cycle. Also recommended for 18 month harvesting and frost pockets (12 month harvesting) in the midlands. BEST FEATURES N39 is an excellent variety for coastal and hinterland production on sandy soils. Best RV yields are achieved when harvested between 14 and 18 months of age. It is resistant to eldana and can therefore be carried over with less eldana damage compared to other varieties. It exhibits very quick germination and canopy closure. It is one of the best varieties for frost pockets in the midlands.
Variety N41
(Dec 2014)
Parents: 77F790 x 82W1542. Year of release: 2002 (south) and 2006 (north). Permitted Pest, Disease and Variety Control Areas: Permitted for planting in all areas. Recommended for planting under a wide range of growing conditions in the coastal and hinterland regions and harvested at 12-15 months of age. Recommended for harvesting early to mid-season in the irrigated regions. Also recommended for annual harvesting in frost pockets and under supplementary irrigation in the midlands. BEST FEATURES N41 is currently the most widely adapted commercial variety that performs well under rainfed and irrigated conditions. Good RV yields are achieved under waterlogged conditions and heavy soils, as well as under sandy soils under irrigation. It has good ratooning ability compared to other varieties, as yields generally improve with ratoons. Performance during periods of drought have been better than other varieties. It is one of the best varieties for frost pockets and for irrigated annual harvesting in the midlands.
Variety N47
(Nov 2016)
Variety N61
(Nov 2016)

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