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Technical annual report 2000-01



Technical annual report 2000-01


Dept. of Regional Development, Primary Industry, Fisheries and Resources technical annual report; Department of Regional Development, Primary Industry, Fisheries and Resources technical and annual report; Reports; PublicationNT; Technical bulletin (Northern Territory. Dept. of Primary Industry and Fisheries) ; no. 295




Made available via the Publications (Legal Deposit) Act 2004 (NT).






Agriculture -- Northern Territory -- Periodicals; Fisheries -- Northern Territory -- Periodicals

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Dept. of Primary Industry and Fisheries

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Technical bulletin (Northern Territory. Dept. of Primary Industry and Fisheries) ; no. 295



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Technical Annual Report 2000/01 51 Observations: After 15 years, the no till areas had visibly less weed infestation than the conventional till areas. However, there were some problems emerging in the no till areas, such as soil surface compaction over time resulting in poor plant establishment and growth. The conventional till areas became increasingly weedy, particularly with nutgrass, summer grasses, Senna, Sida and buffalo clover. Crops in both treatment areas experienced different problems. The no-till areas required adequate moisture for the planter to work correctly. The conventional till areas required much less moisture, otherwise they became muddy and untrafficable. PROJECT: Grain Sorghum Varieties for the Douglas - Daly District Project Officer: P. Shotton Location: Douglas Daly Research Farm Objective: To produce and compare new and commercially available grain sorghum varieties at the Douglas Daly Research Farm and determine which may be suitable for the area. Background: Over the past seven years replicated sorghum variety trials have been undertaken at the Douglas Daly Research Farm. During the past four years, sorghum seed has been used from the Pioneer and Pacific Seed companies. Varieties evaluated are those that have shown promise in past years and new lines that may suit the Top End conditions. Trial results will provide information and guidance for Top End sorghum producers to choose the most suitable commercially available seed varieties. Method: Trial location: Paddock 10A, DDRF Trial area: 3.5 ha Number of varieties: 12 Trial design: Randomised block with four replications Weed control: Glyphosate 2 L/ha Atrazine 2 L/ha Dual 2 L/ha Post emergent application of Starane at 300 mL/ha Fertiliser: 200 kg/ha 19-13-0-10 100 kg/ha urea 75 kg/ha Muriate of potash Each plot is monitored and evaluated for plant population, insect and pest occurrence, plant height, head type, resistance to head mould and leaf disease, plant lodging, hand and machine harvest yields, flowering and maturing dates. Results: During this season the wet conditions in March and April caused some problems with head moulds, leaf disease and insect problems, with some of the early-maturing varieties sprouting prior to harvest. Soil diseases and birds also affected plant population and establishment. Details are shown in Table 1.