Effects of Soil pH and Coatings on the Efficacy of Polymer coated ZnO Nanoparticulate fertilizers in Wheat (Triticum aestivum)

Author(s):  
Zeinah Elhaj Baddar ◽  
Jason M. Unrine
Keyword(s):  
Weed Science ◽  
1983 ◽  
Vol 31 (3) ◽  
pp. 347-350 ◽  
Author(s):  
Patrick J. Shea ◽  
Jerome B. Weber

Residue levels of fluridone {1-methyl-3-phenyl-5-[3-(trifluoromethyl)phenyl]-4(1H)-pyridinone} in soil were determined indirectly by measuring the chlorophyll content of wheat (Triticum aestivumL.) grown on a Norfolk sandy loam (Typic paleudult; fine loam, siliceous, thermic) 14, 22, 39, and66days after a preemergence application of the herbicide. The half-life for 0.22 and 0.45 kg/ha of fluridone was estimated to be 18 days. Phytotoxicity increased with increasing pH in newly-treated soils and in soil sampled 14 days after treatment. Higher chlorophyll levels in wheat grown in soil sampled 39 days after fluridone application indicated a decrease in biologically-active herbicide. Soil removed from the field following later cultivation produced small reductions in chlorophyll at pH 4.0 and 5.2, but at pH 7.0 significant fluridone activity was still present in the soil after 66 days. Cultivation may have increased the surface concentration of the herbicide.


2019 ◽  
Vol 50 (16) ◽  
pp. 2056-2064 ◽  
Author(s):  
Lawrence Aula ◽  
Peter Omara ◽  
Jagmandeep S. Dhillon ◽  
Alimamy Fornah ◽  
William R. Raun

Author(s):  
Pedro Jacob Bosco Amaral ◽  
Djoko Murdono

Research on vegetative and generative appearance of 10 wheat (Triticum aestivum L.) genotives was conducted in June 2017 until September 2017 in Blotongan Area, District Sidorejo, Salatiga which has a height of ± 698 m above sea level. The purpose of this study was to determine and obtain the appearance of vegetative and generative 10 genotypes of wheat that grow well in the plains medium. This research is using the RAK and analysis of variance with test HSD 5%. The treatments were 10 genotypes, namely: FUNDACEP 30, Filin / 2 * 1PASTAR 11 QUAIU, WBLL * 2KURUKU, PRL / 2 * PASTOR, Pfau / MILAN / 3 / SKAUZ / KS9, KIRITATI / 4/2 / * SERI.1B * 2, TRCH * 2/3 /C80.I/3, SAAR / 2 / * WAXWING, GURI 3. The treatment is repeated 3 times. The results showed that there is a difference in the appearance of vegetative between genotives tested in terms of plant height and number of leaves. While the number of tillers, flowering age, and harvest age is no different. On the appearance of the generative found no difference between genotives in terms of the number of seeds per panicle, seed weight per m2, the middle row 4th seed weight, seed weight per panicle, and the weight of 1000 seeds. While the length of spikelet number of panicle and seed weight of 1 liter is not unlike real; Genotif that has levels of appearance of vegetative and generative in the Middle Plains is PRL/2 * PASTOR and TRCH * 2/3/C80. I/3 relatively better than the varieties of Guri-3 as control varieties; Factors temperature, drought, soil pH, and soil texture when testing are causing high stress, so that the appearance of Guri-3 as control varieties haven't been able to emulate the appearance according to the description of the varieties of Guri-3.


Weed Science ◽  
1985 ◽  
Vol 33 (6) ◽  
pp. 882-887 ◽  
Author(s):  
Dennis Yee ◽  
Pearl Weinberger ◽  
Shahamat U. Khan

The release of soil-bound14C-prometryne [N,N′-bis(l-methylethyl)-6-(methylthio)-1,3,5-triazine-2,4-diamine] residues was affected by soil pH, fertilizer treatments (with or without plants), and the crop species wheat [Triticum aestivum(L.) Merr. ‘Marquis’] and soybean [Glycine max(L.) Merr. ‘Maple Presto’]. More of the bound radioactivity was released following large pH changes in the soil than with small deviations. In addition, more14C-prometryne was found in the extracts of the soil incubated with large pH alterations. Fertilizing with ionic nitrogen sources (NO3–and NH4+) in the absence of plants was also responsible for releasing higher levels of radioactivity than with the nonionic fertilizer urea. These fertilizer-induced differences in release were not apparent when wheat plants were added to the system. Release of the bound radioactivity, however, was plant specific, particularly in the rhizoplane, since soybean roots elicited a greater release in the rhizoplane than wheat roots. Transport and metabolism of these residues were also plant specific.


2018 ◽  
Vol 49 (7) ◽  
pp. 803-813 ◽  
Author(s):  
Jagmandeep Dhillon ◽  
Mariana Ramos Del Corso ◽  
Bruno Figueiredo ◽  
Eva Nambi ◽  
William Raun

Author(s):  
O. E. Bradfute ◽  
R. E. Whitmoyer ◽  
L. R. Nault

A pathogen transmitted by the eriophyid mite, Aceria tulipae, infects a number of Gramineae producing symptoms similar to wheat spot mosaic virus (1). An electron microscope study of leaf ultrastructure from systemically infected Zea mays, Hordeum vulgare, and Triticum aestivum showed the presence of ovoid, double membrane bodies (0.1 - 0.2 microns) in the cytoplasm of parenchyma, phloem and epidermis cells (Fig. 1 ).


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