Component interactions in zero-till planters for heavy clay soils of southern Queensland

Ward, L. D.; Norris, CP; Thomas, Eric

doi:10.1016/0167-1987(91)90122-e

Cited by 4 publications

(3 citation statements)

References 2 publications

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“…The majority of studies, conducted to assess the performance of furrow openers, are carried out under field conditions, and these studies investigate the seed emergence rate and productivity. Studies conducted by Woodruff et al (1966), Choudhary & Baker (1980), Choudhry et al (1990), and Ward et al (1991) suggest that hoe openers enable a higher seed emergence rate and a higher productivity in certain conditions compared to the disc openers. However, according to Krall et al (1979) double disc openers cause a low sowing depth variation and a high emergence rate in comparison to stub-runner and hoe openers.…”

mentioning

confidence: 98%

Seeding performances of no-till seeders equipped with different furrow openers, covering components and forward speeds for winter wheat

ALTIKAT¹

2012

Tarım Bilimleri Dergisi

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In the no-till method, seeds are placed in rows opened by furrow openers that can work under stubble field conditions, and are covered with soil and plant residue using covering components. Furrow openers and their properties are extremely effective in sowing seeds at certain depths and intra-row distances for various emergence and growth conditions. The purpose of this study is to determine effects of no-till seeders with different furrow opener types, covering components and forward speeds on certain important physical properties of the soil, stubble distribution, and seed emergence of winter wheat. Two different types of no-till seeders; disc (NS-1) and narrow hoe (NS-2), two different types of covering components; chain (CC) and spring type (SC), and two forward speeds; FS-1 (0.75 m s-1) and FS-2 (1.5 m s-1) were used to achieve the purpose of this study. The no-till seeder with a disc type furrow opener achieved better stubble distribution on the soil surface and percentage of seed emergence in comparison to no-till seeder with narrow hoe type openers. The best coverage rate of stubble on the soil surface and percentage of seed emergence were obtained at the forward speed of 0.75 m s-1. While the spring type covering component increased percentage of seed emergence in comparison to the chain type covering component, it decreased the mean emergence time.

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mentioning

confidence: 98%

Seeding performances of no-till seeders equipped with different furrow openers, covering components and forward speeds for winter wheat

ALTIKAT¹

2012

Tarım Bilimleri Dergisi

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“…The site provided a focal point for a range of other activities including: comparison of crop establishment using different tines and presswheels (Radford and Nielsen 1983;Ward et al 1991); crop nutrition (nitrogen and phosphorus); pasture establishment in a cropping lands; potential role for gypsum in soil amelioration; detailed erosion studies (Govers and Loch 1993); demonstration of principles of infiltration and influence of surface conditions using rainfall simulation (Cawley et al 1992); measurement of deep drainage for cropping, pasture, and native vegetation (Tolmie et al 2003); and improved understanding of the soil as a medium for storing and providing a water and nutrient supply for crops and pastures. This site was 1 of 3 concurrently managed by a team of 3 part-time scientists, and 25% of the time of an experienced technical officer.…”

Section: Reflections On the Process And Approachmentioning

confidence: 99%

“…In the 1970s and 1980s there was concern that expansion of cropping further west onto less resilient soils might accelerate natural resource degradation (Queensland Department of Primary Industries 1984). Broad-scale trials and detailed experimentation began in the 1970s and 1980s to explore the viability of reduced tillage systems (Freebairn and Boughton 1981;Ward and Norris 1982;Ward et al 1991). Thomas et al (2007) reviewed 12 tillage and catchment studies across the cropping zone of Queensland; in summary, conservation tillage practices have potential benefits for production and soil resource stability in most areas.…”

Section: Introductionmentioning

confidence: 99%

Impact of soil conditions on hydrology and water quality for a brown clay in the north-eastern cereal zone of Australia

Freebairn¹,

Wockner²,

Hamilton³

et al. 2009

Soil Res.

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Abstract. Hydrology and water quality impacts of alternative land management practices are poorly quantified for semi-arid environments in the northern Australia cropping zone, yet wide-scale changes in tillage practices and land use were being recommended based on experience from other environments.The objective of this study was to explore changes in soil profile and catchment hydrology and water quality associated with different soil surface conditions created by different tillage and grazing practices. Soil water, runoff, and suspended sediment concentrations were monitored on 4 contour bay catchments over an 18-year period. Soil conditions were described by soil moisture, soil cover, and surface roughness in order to explore functional relationships between management, hydrology, and water quality. The site was chosen to represent the drier margins of cropping in southern Queensland where clay soils with high water-holding capacity, in conjunction with fallowing to store water for later crop growth, are an essential risk management tool.Accumulation of soil water in fallows was inefficient, with fallow efficiencies ranging from -7 to 40% due to high evaporation and runoff losses. Runoff amount was determined by soil water content, which was strongly influenced by antecedent rainfall, water use, and evaporation patterns. Surface cover and roughness had subtle influences on runoff, and a greater effect on suspended sediment concentration. Runoff and suspended sediment losses were considerably lower under pasture than cropping.A participative approach between farmers and scientists was demonstrated to be an efficient method to carry out an extensive and long-term catchment study at a remote location. This study provides benchmark data for future hydrologic and water quality investigations.

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PM—Power and Machinery

Chaudhuri¹

2001

Journal of Agricultural Engineering Research

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Component interactions in zero-till planters for heavy clay soils of southern Queensland

Cited by 4 publications

References 2 publications

Seeding performances of no-till seeders equipped with different furrow openers, covering components and forward speeds for winter wheat

Seeding performances of no-till seeders equipped with different furrow openers, covering components and forward speeds for winter wheat

Impact of soil conditions on hydrology and water quality for a brown clay in the north-eastern cereal zone of Australia

PM—Power and Machinery

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