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Biological activity of soils under systems of organic farming, agroforestry and pasture in the Amazon Rev. Ciênc. Agron.
Silva,Irene Ferro; Araújo Neto,Sebastião Elviro de; Kusdra,Jorge Ferreira.
The aim of this work was to evaluate biological indicators of soils used under the systems of organic farming, agroforestry and pasture in the south western part of the Amazon region of Brazil. The experiment was carried out at the Seridó Ecological Site, located in Rio Branco, in the state of Acre, Brazil. The experimental design was completely randomised, with five treatments (land-use systems) and six replications, with each replication consisting of four single samples. The systems of land use evaluated were: 1) native forest (control); 2) agroforestry (AFS); 3) pasture; 4) intercropped passion fruit, maize, cassava, pineapple and forage peanut; and 5) intercropped passion fruit, maize, cassava, pineapple and tropical kudzu. It was found that organic...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Organic production; Carbon dynamics; Ground cover.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000300001
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Effect of Grazing Systems on Range Condition in Pabbi Hills Reserve Forest, Kharian, Punjab, Pakistan Chilean J. Agric. Res.
Sajjad Haider,Muhammad; Maclaurin,Angus; Ali Chaudhry,Amjad; Mushtaque,Muhammad; Ullah,Sami.
Grazing management of rangeland systems has not been well researched in Pakistan; grazing system the most sustainable is not known. In order to evaluate various grazing systems, a study was performed at Pabbi Hills Reserve Forest, Kharian, Punjab. Four simulated grazing treatments, viz. ungrazed control, continuous grazing, seasonal deferred grazing, and rotational deferred grazing, were tested in a randomized complete block design with four replicates. Response variables included species composition, fresh herbage yield, dry herbage yield of grasses and forbs, basal cover, and ground cover. Of the three grazing systems, the six-month seasonal deferred grazing system resulted in a marked increase in basal cover, but had no changes in relative species...
Tipo: Journal article Palavras-chave: Sustainable rangeland system; Basal cover; Species composition; Herbage production; Ground cover; Six-month seasonal deferred grazing system.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000400010
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Effects of time-controlled and continuous grazing on total herbage mass and ground cover JARTS
Sanjari, Gholamreza; Ghadiri, Hossein; Yu, Bofu.
Grazing practices in rangelands are increasingly recognized as a management tool for environmental protection in addition to livestock production. Long term continuous grazing has been largely documented to reduce pasture productivity and decline the protective layer of soil surface affecting environmental protection. Time-controlled rotational grazing (TC grazing) as an alternative to continuous grazing is considered to reduce such negative effects and provides pasture with a higher amount of vegetation securing food for animals and conserving environment. To research on how the grazing system affects herbage and above ground organic materials compared with continuous grazing, the study was conducted in a sub-tropical region of Australia from 2001 to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Natural resource management Currajong; Herbage mass; Ground cover; Time-controlled grazing; Continuous grazing.
Ano: 2016 URL: http://www.jarts.info/index.php/jarts/article/view/2016041950145
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Parthenium hysterophorus Herbage Mulching: a Potential Source of Weeds Control in Soybean (Glycine max) Planta Daninha
SIDDIQUI,M.H.; KHALID,S.; SHEHZAD,M.; SHAH,Z.A.; AHMAD,A..
ABSTRACT: Weeds have indirect effects on crop plants. Crop development is affected by allelopathy from certain weed species. Allelochemicals from allelopathic weeds can disturb the root and shoot growth of emerging crop seedlings, as well as cause several other types of damage. A study was carried out to investigate the allelopathic potential of Parthenium hysterophorus for weed response in soybean. The experiment was laid out in Randomized Complete Block Design (RCBD) with split plot arrangements and replicated thrice. Sowing methods (broadcast and line sowing) were kept in the main plot and mulching treatments (surface mulching and soil incorporation) were kept in the sub-plots. Mulching of Parthenium hysterophorus was applied at the rate of 1.0 t ha-1,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Parthenuim weed; Ground cover; Allelopathy.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100235
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Urochloa ruziziensis Desiccation, Straw Quantity and Position on Nodulation and Production of Soybean ‘M-SOY 7908 RR’ Planta Daninha
NEPOMUCENO,M.P.; SILVA,B.P.; GIANCOTTI,P.R.F.; PEREIRA,F.C.M.; ALVES,P.L.C.A..
ABSTRACT: This study aimed to evaluate the effects of the quantity and soil position of Urochloa ruziziensis straw desiccated with glyphosate for different periods of time on ‘M-SOY 7908 RR’ soybean nodulation, growth and production characteristics. Three experiments were conducted under semi-controlled conditions. In the first, three quantities of U. ruziziensis straw (2.5, 5.0 and 10 ton ha-1) previously desiccated with glyphosate were incorporated into the soil (10 cm deep) or deposited on the soil surface, and in the second experiment, the treatments consisted of three U. ruziziensis desiccation periods, 0, 7 and 12 days before soybean sowing, and one treatment without U. ruziziensis. In the third treatment, desiccation was performed at 0, 5 and 10...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Glycine max; Ground cover; No-till farming; Glyphosate.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100268
Registros recuperados: 5
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