Intercropping of field crops in cotton for the management of purple nutsedge (Cyperus rotundus L.)

Iqbal, Javaid; Cheema, Zahid Ata; An, Malaviya

doi:10.1007/s11104-007-9400-8

Cited by 89 publications

(63 citation statements)

References 21 publications

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“…Previous field studies have provided evidence that sorghum could inhibit growth of weeds or of Table 2 Mean colonization (cfu g −1 ) of root tissue or soil planted with wheat cultivar Lewjain or sorghum genotypes Redlan or RTx433 with rifampicin-marked strains of P. fluorescens subsequent crops (Roth et al 1999;Iqbal et al 2007). Phytotoxic compounds in sorghum stalks and leaves, such as phenolics or cyanogenic glucosides, may have contributed to this allelopathic effect (Halkier and Møller 1989;Sène et al 2001).…”

Section: Discussionmentioning

confidence: 99%

Effect of sorghum seedlings, and previous crop, on soil fluorescent Pseudomonas spp.

2008

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Hypotheses in which sorghum seedlings [Sorghum bicolor (L.) Moench] of different genotypes will differentially modify soil microorganisms and will affect subsequent planting of wheat (Triticum aestivum L.) seedlings, were tested. Wheat cultivar Lewjain, and sorghum genotypes Redlan and RTx433, were planted into soils previously planted with wheat or sorghum in growth chamber experiments. Total culturable fungi and oomycetes, and fluorescent Pseudomonas spp. numbers (cfu) were determined. Pseudomonads were screened for hydrogen cyanide (HCN) production, for the presence of the phlD gene for 2,4-diacetylphloroglucinol production (Phl) and for a region of the operon involved in phenazine-1-carboxylic acid (PCA) production. Pasteurized soils were inoculated with rifampicin-marked strains of Pseudomonas fluorescens then planted with Lewjain, Redlan and RTx433 to assess rhizosphere and soil colonization. Effects of plant species, sorghum genotype and previous crop on culturable fungi and oomycetes, and pseudomonad numbers (cfu g −1 soil) were statistically significant. Soils planted with RTx433 or Lewjain had greater numbers of fungal cfu than soils planted with Redlan. When Lewjain seedlings were grown in soil previously planted with RTx433, there were greater numbers of fungal cfu than when Lewjain was planted into Redlan soil. Wheat planted into wheat soil resulted in statistically significantly fewer numbers of pseudomonads than when planted into sorghum soil. Overall, percentages of HCN-producing pseudomonads increased, especially when wheat seedlings were planted in wheat soil. For most treatments, percent of isolates with Phl declined, except when Redlan was planted into Redlan soil, which resulted in increased Phl isolates. When rifampicin-marked P. fluorescens isolates were applied to pasteurized soil, sorghum seedlings sustained rhizosphere and soil populations similar to those on wheat. Sorghum genotypes may differ in associations with soil microorganisms, Plant Soil

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Section: Discussionmentioning

confidence: 99%

Effect of sorghum seedlings, and previous crop, on soil fluorescent Pseudomonas spp.

2008

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“…Allelopathic potentiality under field conditions can be utilized in different ways. For example, incorporation into the soil (Sati et al, 2004), aqueous extracts (Iqbal and Cheema, 2007a), or mix cropping /intercropping (Iqbal and Cheema, 2007b). …”

Section: Moringa Peregrine Is Widely Grown In Saudimentioning

confidence: 99%

Allelopathic Effect of Moringa peregrina Forssk. on Germination and Early Seedling Development of Two Common Food Intercrops

Aytah¹

2017

Int.J.Curr.Microbiol.App.Sci

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“…Losses due to C. rotundus were as high as 59% in FYM, 36% in NPK and 31% in ½N-PK amendment, while mixed weeds caused up to 75%, 40% and 56% yield losses in FYM, NPK and ½N-PK amendments, respectively. C. rotundus is among the world's most harmful weeds and it poses serious problems in rice and other economic important crops in many parts of the world (Iqbal et al, 2012).…”

Section: Effect Of Weeds and Biopower On Yield Components Of Ricementioning

confidence: 99%

Effect of Biopower Application on Weed Growth and Yield of Rice

et al. 2017

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-Biopower is a commercial rice biofertilizer comprised of various associative nitrogen fixers. In this present study, a field trial was carried out to assess the effects of Biopower application on the growth of some rice weeds and yield of rice (Oryza sativa). Four common rice weeds namely Cyperus rotundus, Echinochloa colonum, Marsilea minuta, Paspalum paspaloides, and mixed weeds were sown in 1:1 weed crop ratio in soil amended with i) ½ dose of N (nitrogen) + recommended doses of PK (phosphorus, potassium) fertilizers, ii) recommended doses of NPK fertilizers, and iii) farmyard manure (FYM) + ¼NPK fertilizers, with and without Biopower application. Biopower application variably reduced weed biomass in different soil amendment systems. The effect of Biopower on weed biomass was most pronounced in NPK, followed by FYM amendment, resulting in up to 50% and 36% reduction in weed biomass, respectively. Biopower application enhanced shoot N content of rice in all the treatments. The effect of Biopower application on shoot N content was most pronounced in ½N-PK and least in NPK applied plots. The four weeds planted with rice reduced rice grain yield by 12-75% in different soil amendments. Biopower application enhanced grain yield in rice, in weed free control, and in different weeds infested plots by 38-90% in ½N-PK, 6-13% in NPK and 12-150% in FYM applied plots. The present study has come to the conclusion that adverse effect of weeds on grain yield of rice can be managed by the application of Biopower in combination with either ½N-PK or FYM amendment.Keywords: associative nitrogen fixers, biofertilizer, weed suppression. RESUMO -Biopower é um biofertilizante comercial para arroz composto de vários fixadores de nitrogênio associativos. Neste estudo, realizou-se um ensaio de campo para avaliar o efeito da aplicação de Biopower no crescimento de algumas plantas daninhas de arroz e na produção de arroz (Oryza sativa). Foram semeadas quatro espécies de plantas daninhas comuns: Cyperus rotundus, Echinochloa colonum, Marsilea minuta e Paspalum paspaloides; plantas daninhas variadas foram semeadas na proporção de 1:1 em solo ajustado com i) meia dose de N (nitrogênio) + doses recomendadas de adubos PK (fósforo, potássio), ii) doses recomendadas de adubos NPK e iii) estrume de quintal + fertilizantes NPK

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Intercropping of field crops in cotton for the management of purple nutsedge (Cyperus rotundus L.)

Cited by 89 publications

References 21 publications

Effect of sorghum seedlings, and previous crop, on soil fluorescent Pseudomonas spp.

Effect of sorghum seedlings, and previous crop, on soil fluorescent Pseudomonas spp.

Allelopathic Effect of Moringa peregrina Forssk. on Germination and Early Seedling Development of Two Common Food Intercrops

Effect of Biopower Application on Weed Growth and Yield of Rice

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