scholarly journals EFFECTS OF SEWAGE SLUDGE APPLICATIONS TO AGRICULTURAL SOIL ON THE BIOCHEMICAL PARAMETERS OF FABA BEAN (FABA SATIVA BERNH.), WHEAT (TRITICUM AESTIVUM L.), SPINACH (SPINACIA OLERACEA L.) AND CUCUMBER (CUCUMIS SATIVUS L.) CROPS

2020 ◽  
Vol 18 (5) ◽  
pp. 6457-6467
Author(s):  
E.M. EID ◽  
A.F. EL-BEBANY ◽  
M.A. TAHER ◽  
S.A. ALRUMMAN ◽  
A.A. HUSSAIN ◽  
...  
Author(s):  
ANDERSON LUIZ NUNES ◽  
RIBAS ANTONIO VIDAL

A determinação da concentração de compostos no solo por meio de plantas quantificadoras apresenta como principal vantagem detectar somente resíduos biologicamente ativos, não havendo necessidade de instrumentos onerosos e de prévia extração dos resíduos do solo. Dessa forma, este trabalho teve como objetivo selecionar plantas quantificadoras da presença de herbicidas residuais (pré emergentes) para o uso em bioensaios. Utilizou-se delineamento experimental completamente casualizado com arranjo bifatorial 8 x 6, com cinco repetições. O fator A consistiu de espécies cultiváveis e o fator B de herbicidas aplicados em pré emergência. Os resultados evidenciaram que a sensibilidade na detecção do herbicida no solo depende da espécie utilizada. A sensibilidade das espécies Lactuca sativa L. e Raphanus sativus var. sativus L. não permitiu condições de quantificar a presença dos herbicidas atrazina, cloransulam, imazaquin, metribuzin e S-metolacloro. Raphanus sativus var. oleiferus Metzger é potencial quantificador de imazaquin e S metolacloro. Plantas de Curcubita pepo L. são promissoras na bioavaliação de metribuzin. A espécie Cucumis sativus L. mostrou-se potencial bioindicadora de cloransulan e imazaquin. Avena sativa L. apresentou-se como potencial quantificadora de imazaquin e metribuzin. Hordeum vulgare L. pode quantificar o metribuzin e Triticum aestivum L. é promissor na detecção da biodisponibilidade de atrazina.


2014 ◽  
Vol 53 (2) ◽  
pp. 247-256 ◽  
Author(s):  
Irena Jarzyńska ◽  
Józef Buczek

The influence of simazine (2-chloro-4,6-bis(ethylamine)-1,3,5-triazine) on N0<sub>3</sub>- uptake and nitrate reductase (NR) activity in wheat (<em>Triticum aestivum</em>) and cucumber (<em>Cucumis sativus</em>) seedlings was investigated. It was found that at first (up to 12 h after herbicide treatment) simazine enhanced and then inhibited NR activity in the leaves and roots of the tested plants. After seven days of growth in nutrient medium containing 2.5 and 25 µM simazine the herbicide inhibited by 25 and 70 per cent, respectively, NR activity and reduced by 30 per cent in wheat and 50 per cent in cucumber seedlings nitrate uptake. The probable mechanism of NR inhibition by simazin is discussed and it is suggested that the influence of the herbicide on NR activity may not be exclusively connected with photosynthesis inhibition.


HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 622c-622
Author(s):  
Debbie Reid-Goldman ◽  
Frank Daniello ◽  
L. Ed Clark

Greenhouse and field studies indicate that guar (Cyamopsis Tetragonoloba (L.) Taub.) residues stimulate growth of three different vegetable species: spinach (Spinacia oleracea L. variety “Polka” watermelon (Citrullus vulgaris Schrad. variety “All Sweet”, and cucumber (Cucumis sativus L. variety “Poinsett 76”. Growth response was greater than that contributed by nitrogen from guar residue suggesting that an allelochemical may be responsible. Significant differences were found in growth response of spinach to separated components of the guar plant. No significant differences were found between partially decomposed and non-decomposed guar residue. A stimulated growth response was observed in two media: a pasteurized mineral soil and a sterilized sand.


Genome ◽  
2007 ◽  
Vol 50 (2) ◽  
pp. 215-225 ◽  
Author(s):  
Sang-Min Chung ◽  
Vanessa S. Gordon ◽  
Jack E. Staub

Chilling injury in cucumber (Cucumis sativus L.) is conditioned by maternal factors, and the sequencing of its chloroplast genome could lead to the identification of economically important candidate genes. Complete sequencing of cucumber chloroplast (cp)DNA was facilitated by the development of 414 consensus chloroplast sequencing primers (CCSPs) from conserved cpDNA sequences of Arabidopsis (Arabidopsis thaliana L.), spinach (Spinacia oleracea L.), and tobacco (Nicotiana tabacum L.) cpDNAs, using degenerative primer technologies. Genomic sequence analysis led to the construction of 301 CCSPs and 72 cucumber chloroplast-specific sequencing primers (CSSPs), which were used for the complete sequencing of cpDNA of Gy14 (155 525 bp) and ‘Chipper’ (155  524 bp) cucumber lines, which are, respectively, susceptible and tolerant to chilling injury (4 °C for 5.5 h) in the first leaf stage. Comparative cpDNA sequence analyses revealed that 1 sequence span (located between genes trnK and rps16) and 2 nucleotides (located in genes atpB and ycf1) differed between chilling-susceptible and -tolerant lines. These sequence differences correspond to previously reported maternally inherited differences in chilling response between reciprocal F1progeny derived from these lines. Sequence differences at these 3 cpDNA sites were also detected in a genetically diverse array of cucumber germplasm with different chilling responses. These and previously reported results suggest that 1 or several of these sequences could be responsible for the observed response to chilling injury in cucumber. The comprehensive sequencing of cpDNA of cucumber by CCSPs and CSSPs indicates that these primers have immediate applications in the analysis of cpDNAs from other dicotyledonous species and the investigation of evolutionary relationships.


Agronomy ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1901
Author(s):  
Ugele Majaule ◽  
Oagile Dikinya ◽  
Bruno Glaser

Biochar can influence bioavailability of micronutrients and crop yields in sewage sludge-treated soils, but the mechanisms of its effects remain poorly understood. Therefore, this field experiment was conducted on a Luvisol and Cambisol to investigate the bioavailability and uptake of some micronutrients and spinach (Spinacia oleracea L.) yields grown in soil amended with biochar and sewage sludge. Ten treatments arranged in randomized complete block design with three levels of biochar (0, 2.5, 5 t/ha) and sewage sludge (0, 6, 12 t/ha) and combinations thereof were applied. High rate of sole sewage sludge, and its combination with biochar significantly (p < 0.05) increased yield on the Luvisol. On the Cambisol, only marginal yield increase resulted from high rates of sole organic amendments and chemical fertilizer, while co-applications decreased yields. Co-amendments generally increased bioavailability of micronutrients relative to sole amendments in the order Fe > Cu = Zn, with greater increase on the Cambisol, but uptake of micronutrients decreased with co-application rates of amendments. Contents of micronutrients in plant leaves were within the normal range, except for a combination of highest dosage of co-amendments on the Cambisol (Fe; 560 mg/kg), which resulted in leaf necrosis and 7% yield depression. The results showed greater yield response of spinach to co-application of amendments on the Luvisol.


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