Comparative Weed Density Studies in Irrigated Carrot (Daucus carota L.) Potato (Solanum tuberosum L.) and Wheat (Triticum aestivum L.) in Sokoto-Rima Valley, Sokoto State, Nigeria

2005 ◽  
Vol 1 (1) ◽  
pp. 14-21 ◽  
Author(s):  
A.I.,Yakubu . ◽  
J. Alhassan . ◽  
A. Lado . ◽  
S. Sarkindiya .
Keyword(s):  
Triticum Aestivum ◽  
Solanum Tuberosum ◽  
Daucus Carota ◽  
Solanum Tuberosum L ◽  
Triticum Aestivum L ◽  
Daucus Carota L ◽  
Weed Density

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 Ensaios sôbre desidratação de vegetais

Bragantia ◽  
1955 ◽  
Vol 14 (unico) ◽  
pp. 215-223
Author(s):  
André Tosello ◽  
Aby de Arruda Veiga
Keyword(s):  
Solanum Tuberosum ◽  
Pisum Sativum ◽  
Daucus Carota ◽  
Cajanus Cajan ◽  
Ipomoea Batatas ◽  
Solanum Tuberosum L ◽  
Daucus Carota L ◽  
Pisum Sativum L

Êste trabalho, que reune resultados de ensaios de secagem efetuados em Campinas pelo processo de ar quente, em um secador em forma de túnel yertical, semi-industrial e especialmente construido para êsse fim, representa uma contribuição para o estudo da desidratação de diversos dos nossos alimentos. Observou-se que os produtos amiláceos, tais como batatinha (Solanum tuberosum L.), cenoura (Daucus carota L. var. sativa D.C.), ervilhas (Pisum sativum L.), mandioca (Manikot utilissima Pohl) e mandioquinha (Arracacia xanthorrhiza Bancr.) podem ser sêcos entre 40 e 55°C de temperatura, em tempo variável de 5-10 horas, conforme a densidade de distribuição do material nas bandejas do secador. O feijão guandu (Cajanus cajan L. Millsp.) bem como a batata doce (Ipomoea batatas Lam.) constituíram exceção ao tempo de secagem, levando 15 horas para secar.

scholarly journals Photosynthetic activity of Daucus carota L. subsp. sativus (Hoffm.) Schübl. & G. Martens and Triticum aestivum L. in the presence of copper and vanadium ions

2018 ◽  
Author(s):  
Iwona Konieczna ◽  
Grzegorz Rut ◽  
Angelika Kliszcz
Keyword(s):  
Heavy Metal ◽  
Triticum Aestivum ◽  
Metal Ions ◽  
Daucus Carota ◽  
Chlorophyll A Fluorescence ◽  
Heavy Metal Ions ◽  
Photosynthetic Activity ◽  
Triticum Aestivum L ◽  
Daucus Carota L ◽  
Vanadium Ions

The aim of this study was to investigate the influence of copper and vanadium ions on photosynthetic activity of carrot (Daucus carota L. subsp. sativus (Hoffm.) Schübl. & G. Martens) and winter wheat (Triticum aestivum L.). Measurements of the total chlorophyll content were performed – the SPAD chlorometer and the basic chlorophyll a fluorescence parameters were determined using the FMS-1 fluorometer – Hansatech. The studies used aqueous solutions of copper salt (CuSO4) and vanadium (H4NO3V), with molar concentrations: 0.6 mM, and 3 mM. The control group consisted of plants watered with distilled water. Both in carrots and in wheat, together with an increase in the concentration of heavy metal ions, a decrease in the content of chlorophyll was observed and significant changes in the activity of the photosystem were demonstrated II. Measurements of chlorophyll fluorescence kinetics and only in D. carota subsp. sativus showed a statistically significant effect of 3 mM solutions of copper and vanadium ions on photosynthetic activity. In T. aestivum none of the heavy metal ions induced significant changes in the values of chlorophyll a fluorescence.

scholarly journals Syntaksonomiczna ocena zbiorowisk chwastów z udziałem Ambrosia artemisiifolia L. na polach uprawnych w zachodniej Ukrainie

2015 ◽  
Vol 70 (1) ◽  
pp. 81-90
Author(s):  
ANDRZEJ WOŹNIAK ◽  
MIROSŁAWA SOROKA
Keyword(s):  
Triticum Aestivum ◽  
Solanum Tuberosum ◽  
Zea Mays L ◽  
Solanum Tuberosum L ◽  
Triticum Aestivum L ◽  
Fragaria X Ananassa ◽  
Ambrosia Artemisiifolia ◽  
Vitis Vinifera L ◽  
Glycine Max L ◽  
Medicago Sativa L

Badania przeprowadzono w latach 2012–2014 na polach uprawnych zachodniej Ukrainy. Oceniono w nich występowanie ambrozji bylicolistnej (Ambrosia artemisiifolia L.) w zasiewach: (1) kukurydzy (Zea mays L.); (2) słonecznika (Helianthus annuus L.); (3) lucerny siewnej (Medicago sativa L. subsp. sativa); (4) truskawki (Fragaria x ananassa Duchesne); (5) ziemniaka (Solanum tuberosum L.); (6) pszenicy jarej (Triticum aestivum L.); (7) soi (Glycine max (L.) Merr.) i (8) winorośli właściwej (Vitis vinifera L.). Ocenę fitosocjologiczną oraz syntaksonomiczną zbiorowisk chwastów przeprowadzono zgodnie z metodą Braun-Blanqueta w pełni okresu wegetacji roślin. Wykazano, że wśród chwastów występujących w uprawach rolniczych większość stanowiła ambrozja bylicolistna, a wskaźnik pokrycia powierzchni tą rośliną wynosił w pszenicy, kukurydzy i słoneczniku 85–90%. Na polach uprawnych zbiorowiska roślin należały do 7 klas syntaksonomicznych. Ambrozję bylicolistną zaliczono do klasy Artemisietea vulgaris i związku Dauco-Melilotenion.

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