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

Cheema, Zahid Ata; Khaliq, Abdul

doi:10.1016/s0167-8809(99)00140-1

Cited by 169 publications

(124 citation statements)

References 5 publications

Supporting

Mentioning

110

Contrasting

Unclassified

Order By: Relevance

“…Esses resultados mostram que a palha de sorgo-deguiné exerce maior influência no crescimento radicular, refletindo em menor produção de matéria seca de parte aérea da soja, quando comparado com sorgo forrageiro. De acordo com Peixoto & Souza (2002), as plantas de sorgo possuem a capacidade de exsudar aleloquímicos através dos pêlos radiculares, compostos estes que também são encontrados em sementes, raízes, colmos e folhas em quantidades variáveis, interferindo no manejo das plantas cultivadas -fato este também comprovado por outros autores (Cheema & Khaliq, 2000;Roth et al, 2000;Correia et al, 2005).…”

Section: Resultsunclassified

Crescimento inicial da soja sob efeito de resíduos de sorgo

et al. 2006

View full text Add to dashboard Cite

RESUMO -O presente trabalho foi desenvolvido em casa de vegetação na Faculdade de Ciências Agronômicas -UNESP, com o objetivo de determinar o efeito no crescimento inicial da soja e na formação do sistema radicular ao longo do tempo da presença de resíduos de sorgo-deguiné e forrageiro. As unidades experimentais constituíram-se de tubos de PVC (rhizotron) com volume de terra de 16 dm -3 . O delineamento experimental utilizado foi inteiramente casualizado num fatorial 2 x 3, sendo duas variedades de sorgo e três manejos dos resíduos de sorgo, com quatro repetições. A palha de sorgo-de-guiné na superfície do solo levou à diminuição na saturação do solo por bases. As palhas de sorgo de ambas as variedades, na superfície do solo, prejudicaram o crescimento da soja, o que também foi observado no caso das raízes do sorgo forrageiro. Resíduos culturais do sorgo-de-guiné, principalmente a palha, são os responsáveis por menores crescimentos das partes aérea e radicular da soja e, conseqüentemente, pelo menor acúmulo de nutrientes.Palavras-chave: alelopatia, crescimento radicular, rotação de culturas. ABSTRACT -This experiment was carried out in a greenhouse at Faculdade de Ciências

show abstract

Section: Resultsunclassified

Crescimento inicial da soja sob efeito de resíduos de sorgo

et al. 2006

View full text Add to dashboard Cite

show abstract

“…Cheema et al (2005) while working on a number of field crops as wheat, cotton, maize, rice and mung bean in Pakistan showed fair degree of success in reducing herbicide doses through tank mixing with allelopathic water extracts of sorghum and sunflower. Such water extracts were prepared by using crop residues of these crops (Cheema & Khaliq, 2000). It is hypothesized that the same fact can be true if such residues are directly applied to the field in a suitable way and dose.…”

Section: Introductionmentioning

confidence: 99%

Integration of sunflower (Helianthus annuus) residues with a pre-plant herbicide enhances weed suppression in broad bean (Vicia faba)

et al. 2011

View full text Add to dashboard Cite

Field trial was conducted with the aim of utilizing allelopathic crop residues to reduce the use of synthetic herbicides in broad bean (Vicia faba) fields. Sunflower residue at 600 and 1,400 g m-2 and Treflan (trifluralin) at 50, 75 and 100% of recommended dose were incorporated into the soil alone or in combination with each other. Untreated plots were maintained as a control. Herbicide application in plots amended with sunflower residue had the least total weed count and biomass, which was even better than herbicide used alone. Integration of recommended dose of Treflan with sunflower residue at 1,400 g m-² produced maximum (987.5 g m-2) aboveground biomass of broad bean, which was 74 and 36% higher than control and recommended herbicide dose applied alone, respectively. Combination of herbicide and sunflower residue appeared to better enhance pod number and yield per unit area than herbicide alone. Application of 50% dose of Treflan in plots amended with sunflower residue resulted in similar yield advantage as was noticed with 100% herbicide dose. Chromatographic analysis of residue-infested field soil indicated the presence of several phytotoxic compounds of phenolic nature. Periodic data revealed that maximum suppression in weed density and dry weight synchronized with peak values of phytotoxins observed 4 weeks after incorporation of sunflower residues. Integration of sunflower residues with lower herbicide rates can produce effective weed suppression without compromising yield as a feasible and environmentally sound approach in broad bean fields.

show abstract

“…In Pakistan, for example, an aqueous extract deriving from sorghum shoots with a 10% concentration is left to ferment for several weeks and is subsequently sprayed post-emergence for weed control. This fermented water extract, known as "Sorgaab", reduced weed density and weed dry weight up to 50% in field trials, depending on the weed species (Cheema & Khaliq 2000;Cheema et al 2002).…”

Section: The Use Of Allelopathy In Cropping Systemsmentioning

confidence: 99%

Allelopathy: driving mechanisms governing its activity in agriculture

Trezzi

Vidal

Balbinot

et al. 2016

Journal of Plant Interactions

107

View full text Add to dashboard Cite

Allelopathy determines the dynamics of plant species in different environments. Understanding this biological phenomenon could help to develop applications in both natural and agricultural systems. This review summarizes the genetic and environmental characteristics that control the production and release of allelochemicals in agroecosystems. This study highlights the current understanding of the environmental changes caused by allelochemicals and summarizes the knowledge about the mechanisms of action of these compounds. Finally, it reviews novel applications of allelopathy in agricultural production systems, including the role of allelochemicals in consortia and their potential use in no-tillage cropping systems through cover crops or mulches.ARTICLE HISTORY

show abstract

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

Cited by 169 publications

References 5 publications

Crescimento inicial da soja sob efeito de resíduos de sorgo

Crescimento inicial da soja sob efeito de resíduos de sorgo

Integration of sunflower (Helianthus annuus) residues with a pre-plant herbicide enhances weed suppression in broad bean (Vicia faba)

Allelopathy: driving mechanisms governing its activity in agriculture

Contact Info

Product

Resources

About