A field study on the influence of soil ph on trace element levels in spring wheat (Triticum aestivum), potatoes (Solanum tuberosum) and carrots (Daucus carota)

1995 ◽  
Vol 85 (2) ◽  
pp. 835-840 ◽  
Author(s):  
I. �born ◽  
G. Jansson ◽  
L. Johnsson
Keyword(s):  
Triticum Aestivum ◽  
Solanum Tuberosum ◽  
Trace Element ◽  
Field Study ◽  
Soil Ph ◽  
Spring Wheat ◽  
Daucus Carota ◽  
Trace Element Levels

SUSCEPTIBILITY OF RED SPRING WHEAT, TRITICUM AESTIVUM L. CV. KATEPWA, DURING HEADING AND ANTHESIS TO DAMAGE BY WHEAT MIDGE, SITODIPLOSIS MOSELLANA (GÉHIN) (DIPTERA: CECIDOMYIIDAE)

1996 ◽  
Vol 128 (3) ◽  
pp. 367-375 ◽  
Author(s):  
R.H. Elliott ◽  
L.W. Mann
Keyword(s):  
Triticum Aestivum ◽  
Field Study ◽  
Spring Wheat ◽  
Triticum Aestivum L ◽  
Larval Survival ◽  
Sitodiplosis Mosellana ◽  
Potted Plants ◽  
Chemical Treatments ◽  
Wheat Midge ◽  
Potential Factors

AbstractIn a 3-year field study, potted plants of ‘Katepwa’ wheat, Triticum aestivum L., were exposed to ovipositing wheat midge. Sitodiplosis mosellana (Géhin), to determine when spikes are most susceptible to damage. After exposure, plants were maintained under controlled conditions for 4 weeks and examined for wheal midge larvae and damaged kernels, ‘Katepwa’ wheat became susceptible to wheat midge damage shortly after spikes emerged from the boot leaf. Location of larvae and damaged kernels within spikes was influenced by the duration spikelets were exposed to oviposition and pattern of anthesis within spikes. In 1992, frequencies of larvae and damaged kernels were 60–90 times higher in spikes exposed to oviposition during advanced heading (stages 57–59, Zadoks’ code) than in those exposed during flowering (stages 61–69). Kernel damage in spikes exposed to oviposition during stages 57–59, 61–65, and 65–70 was 48.5, 3.2, and 0.2%, respectively, in 1993 and 21.2, 1.0, and 0.6%, respectively, in 1994. Data indicated that susceptibility to midge damage declined 15- to 25-fold between heading and early anthesis and 35- to 240-fold between heading and advanced anthesis. Potential factors contributing to these declines and concomitant reductions in larval frequencies are discussed.Commercial fields of ‘Katepwa’ wheat should be monitored for ovipositing wheat midge throughout heading (stages 51–59) when spikes are most vulnerable to damage. Larval survival and kernel damage were so low after stage 61 that monitoring during anthesis should be unnecessary. Intensive inspection of fields throughout heading would ensure that chemical treatments are applied when they are necessary and most effective.

Effect of Activated Carbon on Phytotoxicity of Terbacil to Several Crops

Weed Science ◽  
1982 ◽  
Vol 30 (6) ◽  
pp. 683-687 ◽  
Author(s):  
Alex G. Ogg
Keyword(s):  
Weight Loss ◽  
Triticum Aestivum ◽  
Zea Mays ◽  
Activated Carbon ◽  
Solanum Tuberosum ◽  
Phaseolus Vulgaris ◽  
Spring Wheat ◽  
Significant Loss ◽  
Severely Injured ◽  
Significant Weight Loss

Alfalfa (Medicago sativaL.), beans (Phaseolus vulgarisL.), corn (Zea maysL.), potatoes (Solanum tuberosumL.), spring wheat (Triticum aestivumL.), and sugarbeets (Beta vulgarisL.) were severely injured and had reduced foliage dry weights when grown in soil containing 0.10 ppmw or more terbacil (3-tert-butyl-5-chloro-6-methyluracil). Activated carbon at 150 kg/ha prevented a significant loss in weight of beans and corn in soil containing 0.10 ppmw terbacil and fully protected potatoes in soil containing 0.19 ppmw terbacil. Carbon at 300 kg/ha fully protected sugarbeets and prevented a significant weight loss in alfalfa in soil containing 0.19 ppmw terbacil. Carbon at 600 kg/ha did not protect wheat from 0.19 ppmw terbacil.

INSECTICIDE RESIDUE IN SOIL, POTATOES, CARROTS, BEETS, RUTABAGAS, WHEAT PLANTS AND GRAIN FOLLOWING TREATMENT OF THE SOIL WITH DYFONATE

1974 ◽  
Vol 54 (4) ◽  
pp. 717-723 ◽  
Author(s):  
J. G. SAHA ◽  
R. H. BURRAGE ◽  
Y. W. LEE ◽  
M. SAHA ◽  
A. K. SUMNER
Keyword(s):  
Triticum Aestivum ◽  
Solanum Tuberosum ◽  
Beta Vulgaris ◽  
Daucus Carota ◽  
Solanum Tuberosum L ◽  
Triticum Aestivum L ◽  
Insecticide Residue ◽  
Wheat Seedlings ◽  
Daucus Carota L ◽  
Emulsifiable Concentrate

Dyfonate (O-ethyl S-phenyl ethylphosphonodithioate) was incorporated into soil at the rate of 5.6 or 11.2 kg/ha as granules or emulsifiable concentrate and its persistence in soil and its absorption by potatoes (Solanum tuberosum L.), carrots (Daucus carota L.), beets (Beta vulgaris L.), rutabagas (Brassica napobrassica (L.) Mill), and wheat (Triticum aestivum L.) plants were studied in four locations in Saskatchewan. Proportionately more residue persisted in the soil from the higher rate of application. About 33–35% of the Dyfonate applied as granules at the lower rate remained in the soil 4 mo after application, whereas about 38–41% remained from the emulsifiable concentrate. At the end of the same period, 52–64% of the granules applied at the higher rate remained in the soil as compared to 50–71% from the emulsifiable concentrate. Only 3–10% of the applied chemical remained in the soil 29 mo after application. No residue of dyfoxon (O-ethyl S-phenyl ethylphosphonothioate) was detected in any soil. Potatoes, beets and rutabagas harvested 4 mo after application of Dyfonate had little (0.005 to 0.009 ppm) or no detectable (less than 0.005 ppm) residue, irrespective of the rate of application. Wheat seedlings had between 0.01–0.07 ppm Dyfonate and little or no detectable residue in the more mature plant or in the grain. Carrots grown in soil treated at the lower rate had about 0.35 and 0.04 ppm Dyfonate and dyfoxon, respectively, and at the higher rate, 0.81 and 0.06 ppm. About 77–94% of the residues in carrots could be removed by peeling.

scholarly journals Monitoring of Khorasan (Triticum turgidum ssp. turanicum) and Modern Kabot Spring Wheat (Triticum aestivum) Varieties by UAV and Sensor Technologies under Different Soil Tillage

Agronomy ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1348
Author(s):  
Kristýna Balážová ◽  
Jan Chyba ◽  
Jitka Kumhálová ◽  
Jiří Mašek ◽  
Stanislav Petrásek
Keyword(s):  
Triticum Aestivum ◽  
Spring Wheat ◽  
Triticum Turgidum ◽  
Soil Analysis ◽  
Low Cost ◽  
Wheat Variety ◽  
Soil Surface ◽  
Conventional Tillage ◽  
Soil Tillage ◽  
Thermal Cameras

Khorasan wheat (Triticum turgidum ssp. turanicum (Jakubz.)) is an ancient tetraploid spring wheat variety originating from northeast parts of Central Asia. This variety can serve as a full-fledged alternative to modern wheat but has a lower yield than modern varieties. It is commonly known that wheat growth is influenced by soil tillage technology (among other things). However, it is not known how soil tillage technology affects ancient varieties. Therefore, the main objective of this study was to evaluate the influence of different soil tillage technologies on the growth of the ancient Khorasan wheat variety in comparison to the modern Kabot spring wheat (Triticum aestivum) variety. The trial was arranged in six small plots, one half of which was sown by the Khorasan wheat variety and the other half of which was sown by the Kabot wheat variety. Three soil tillage methods were used for each cultivar: conventional tillage (CT) (20–25 cm), minimum tillage (MTC) with a coulter cultivator (15 cm), and minimization tillage (MTD) with a disc cultivator (12 cm). The soil surface of all of the variants were leveled after tillage (harrows & levelling bars). An unmanned aerial vehicle with multispectral and thermal cameras was used to monitor growth during the vegetation season. The flight missions were supplemented by measurements using the GreenSeeker hand-held sensor and plant and soil analysis. The results showed that the Khorasan ancient wheat was better suited the conditions of conventional tillage, with low values of bulk density and highvalues of total soil porosity, which generally increased the nutritional value of the yield in this experimental plot. At the same time, it was found that this ancient wheat does not deplete the soil. The results also showed that the trend of developmental growing curves derived from different sensors was very similar regardless of measurement method. The sensors used in this study can be good indicators of micronutrient content in the plant as well as in the grains. A low-cost RGB camera can provide relevant results, especially in cases where equipment that is more accurate is not available.

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