Study

Use of sorghum allelopathic properties to control weeds in irrigated wheat in a semi arid region of Punjab

  • Published source details Cheema Z.A. & Khaliq A. (2000) Use of sorghum allelopathic properties to control weeds in irrigated wheat in a semi arid region of Punjab. Agriculture, Ecosystems & Environment, 79, 105-112

Actions

This study is summarised as evidence for the following.

Action Category

Incorporate plant remains into the soil that produce weed-controlling chemicals

Action Link
Natural Pest Control
  1. Incorporate plant remains into the soil that produce weed-controlling chemicals

    A randomised, replicated, controlled trial in 1996-1997 in wheat Triticum sp. fields in Punjab province, Pakistan (Cheema & Khaliq 2000) found plots with sorghum Sorghum bicolor stalks incorporated into the soil had significantly fewer weeds (38-51 plants/m², 20-41% weed suppression) than unweeded controls (64 plants), similar numbers to hand-weeded controls (33 plants, 49% suppression) and more weeds than herbicide-treated controls (12 plants, 82% suppression). Wheat grain yield was 6-17% higher in sorghum residue plots than unweeded controls, 10% higher in hand-weeded than unweeded controls, and 22% higher in herbicide-treated than unweeded controls. The net benefits of sorghum residue (15,040-15,770 Rupees) were similar to those of unweeded controls (15,768 Rupees) but lower than hand-weeding (16,480 Rupees) or herbicide application (17,477 Rupees). After harvesting, sorghum was dried, cut into 2 cm pieces and incorporated 3-5 cm deep during seedbed preparation. Wheat was sown on 21 November 1996, at 45 kg/ha. Plots were 1.5 x 7.5 m with four replicates. There were six treatments: unweeded control; 2, 4, 6 t/ha sorghum residue; herbicide treatment: Chlorotololuron + MCPA at 2.5 kg/ha; hand weeding. Weed density and biomass were recorded in two 1 m² quadrats/plot, 60 or 90 days after sowing.

Output references

What Works in Conservation

What Works in Conservation provides expert assessments of the effectiveness of actions, based on summarised evidence, in synopses. Subjects covered so far include amphibians, birds, terrestrial mammals, forests, peatland and control of freshwater invasive species. More are in progress.

More about What Works in Conservation

Download free PDF or purchase
The Conservation Evidence Journal

The Conservation Evidence Journal

An online, free to publish in, open-access journal publishing results from research and projects that test the effectiveness of conservation actions.

Read the latest volume: Volume 17

Go to the CE Journal

Subscribe to our newsletter

Please add your details if you are interested in receiving updates from the Conservation Evidence team about new papers, synopses and opportunities.

Who uses Conservation Evidence?

Meet some of the evidence champions

Endangered Landscape Programme Red List Champion - Arc Kent Wildlife Trust The Rufford Foundation Save the Frogs - Ghana Bern wood Supporting Conservation Leaders National Biodiversity Network Sustainability Dashboard Frog Life The international journey of Conservation - Oryx British trust for ornithology Cool Farm Alliance UNEP AWFA Butterfly Conservation People trust for endangered species Vincet Wildlife Trust