The effects of flame cultivation on the growth and nitrogen utilization of winter barley
type: CreativeWork
description: With the increasing unpopularity of uncontrolled straw and stubble burning, two field experiments were carried out to investigate the effects of burning stubble using the Calor Gas flame cultivator. Winter barley was sown in the 1986/87 and 1987/88 seasons using a range of seed bed preparation techniques at three nitrogen levels in a sandy loam to sandy clay loam soil in a 2 x 3 x 3 factorial experiment. Trials looked at stubble removal, crop growth and development, soil physical and chemical properties and soil and fertilizer nitrogen uptake using 15N labelling techniques. The flame cultivator significantly reduced height and weight of stubble. It significantly increased grain yields in 1987/88 but just failed to do so in 1986/87. Stubble burning had no effect on ploughed ground but increased yields from minimal cultivation and direct drilling by up to one tonne per hectare. Grain yields were similar to those on ploughed ground where stubble was burned prior to minimal cultivation and direct drilling in 1986/87 and minimal cultivation in 1987/88. Yield increases were attributed to a significantly greater plant stand in 1986/87 and significantly more ears per square metre in both experimental years. Straw yields were not affected by stubble burning. Soil pH, phosphorous, potassium and magnesium and weed and disease levels within the crop were unaffected by stubble burning. Inorganic nitrogen within the cultivation layer of the soil and plant nitrogen uptake were not significantly influenced by stubble burning but inorganic nitrogen levels tended to be lower in direct drilled ground than ploughed or minimally cultivated. While stubble burning significantly reduced soil organic matter, it tended to increase the total nitrogen within the crop and soil where seed was direct drilled. It appeared to increase the uptake of nitrogen from the soil and reduce fertilizer nitrogen uptake by the minimally cultivated and direct drilled crop. Stubble burning in these trials was be…
abstract: With the increasing unpopularity of uncontrolled straw and stubble burning, two field experiments were carried out to investigate the effects of burning stubble using the Calor Gas flame cultivator. Winter barley was sown in the 1986/87 and 1987/88 seasons using a range of seed bed preparation techniques at three nitrogen levels in a sandy loam to sandy clay loam soil in a 2 x 3 x 3 factorial experiment. Trials looked at stubble removal, crop growth and development, soil physical and chemical properties and soil and fertilizer nitrogen uptake using 15N labelling techniques. The flame cultivator significantly reduced height and weight of stubble. It significantly increased grain yields in 1987/88 but just failed to do so in 1986/87. Stubble burning had no effect on ploughed ground but increased yields from minimal cultivation and direct drilling by up to one tonne per hectare. Grain yields were similar to those on ploughed ground where stubble was burned prior to minimal cultivation and direct drilling in 1986/87 and minimal cultivation in 1987/88. Yield increases were attributed to a significantly greater plant stand in 1986/87 and significantly more ears per square metre in both experimental years. Straw yields were not affected by stubble burning. Soil pH, phosphorous, potassium and magnesium and weed and disease levels within the crop were unaffected by stubble burning. Inorganic nitrogen within the cultivation layer of the soil and plant nitrogen uptake were not significantly influenced by stubble burning but inorganic nitrogen levels tended to be lower in direct drilled ground than ploughed or minimally cultivated. While stubble burning significantly reduced soil organic matter, it tended to increase the total nitrogen within the crop and soil where seed was direct drilled. It appeared to increase the uptake of nitrogen from the soil and reduce fertilizer nitrogen uptake by the minimally cultivated and direct drilled crop. Stubble burning in these trials was be…
author: Carlisle, Elaine Kelso
language: eng
date published: 1989-12
date modified: 2026-07-24T03:55:12Z
provider: Queen's University Belfast
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: Queen's University Belfast