Territory Stories

Technical annual report 2000-01

Details:

Title

Technical annual report 2000-01

Collection

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

Date

2001-10

Description

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

Notes

Date:2001-10

Language

English

Subject

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

Publisher name

Dept. of Primary Industry and Fisheries

Place of publication

Darwin

Series

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

ISSN

0158-2763

Copyright owner

Check within Publication or with content Publisher.

Parent handle

https://hdl.handle.net/10070/223369

Citation address

https://hdl.handle.net/10070/687151

Page content

Department of Primary Industry and Fisheries 250 Table 1. Camel Cograzing Project, Waite River (1998-2000) Analysis of variance for averaged yields (kg/ha) of key pasture attributes (significant if p<0.05; rep=15, df=42) at each sampling date. Treatment averages with the symbol (*) in any one sampling event were not different from each other based on comparison to LSD values Total pasture (all species) Date Cograzed Cattle only Control (ungrazed) p value Month 14 145* 140* 293 <0.001 Month 20 32 77 150 <0.001 Month 24 403* 460* 511* 0.038 Month 27 930* 940* 1487 <0.001 All forb species Month 14 8 24 70 <0.001 Month 24 60 115* 141* <0.001 Month 27 162 287* 335* <0.001 Perennial grasses Month 14 130* 105* 146* 0.291 Month 24 193* 208* 178* 0.881 Month 27 433* 272* 522* 0.069 Annual grasses Month 14 7* 10* 77 <0.001 Month 24 117* 122* 175 <0.001 Month 27 335* 381* 630 <0.001 Enneapogon spp. grasses Month 14 1* 3* 44 <0.001 Month 24 28* 25* 101 <0.001 Month 27 54* 71* 355 <0.001 The results of each aspect of the project, including pasture impacts, were compiled and published by RIRDC. Phillips, A., Heucke J., Drges, B. and O'Reilly, G. (2001) Co-grazing Cattle and Camels. Report for the Rural Industries Research and Development Corporation. RIRDC Project No. DNT-20A. Publ. No. 01/092. June 2001. PROJECT: Grazing Impacts at Exclosed Sites Project Officer: G. O'Reilly Location: Alice Springs district Objective: Enhanced documentation of existing grazing impacts, and an improved basis for assessing them in the future. Background: After the drought of the 1960s, several long-term cattle exclosures were established around the NT to document range condition and trend over time. Very few remain, but one that is intact is the Spinifex bore exclosure (now 128 ha) constructed in 1968 on Mt. Riddock station in a sandy open woodland. Treatment differences in the first 11 years of the exclosure (1968-1979), were published in 1982 (Foran et al. 1982). Limited measurements taken by DPIF between 1993 and 1997 suggested that differences between the grazed and ungrazed areas existed, and justified closer scrutiny. Permanently marked sampling sites from the 1970s had been removed so new sites were established in April 1998, and were reassessed in May 2000 following very good seasonal conditions. Results: Thirty years or so of cattle exclosure changed pasture botanical composition dramatically. Species that significantly benefited in terms of biomass from exclosure include buckbush Salsola kali, woollyoats