Effect of different levels of urea and herbicide application on the yield of wheat (Triticum aestivum) in competition with Sinapis arvensis and Avena ludoviciana Durieu

Pot experiment is carried out at the greenhouse belongs to the college of Education-university of Al-Anbar during Winter season 2013/2014 to investigate the effect of application of different levels of bat guano (0, 4 and 8gm) on some yield traits for two bread wheat Triticum aestivum L. Cvs, one is local cv. (Aliz) another one is imported from Australia (Eratom). The experimental treatments are distributed according factorial experiment arrangement using completely randomized blocks with three replicates. Some traits are measured as spikes no per plant, spike length, spike weight, grains nos. per spike and grains weight per pot. Results reveal that bat guano application of 8gm is significantly superior in the average of. It thus could be concluded that the application of bat guano at 8gm alone is the better than 4gm in some traits. However, the genetic affinity of local cv is dominated with 4gm application and of imported cv is to 8gm application. Therefore, it could be recommended to test the application of bat guano on the two cultivars across field environment

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Interactions Between Herbicide Application and Timing of Nitrogen Fertilization in Maize Hybrids

Journal of Agricultural Science ◽

10.5539/jas.v11n9p21 ◽

2019 ◽

Vol 11 (9) ◽

pp. 21

Author(s):

Guilherme V. Pimentel ◽

Silvino G. Moreira ◽

Mateus O. T. de Avila ◽

Antonio Henrique F. de Carvalho ◽

Alessandro A. P. da Silva ◽

...

Keyword(s):

Nitrogen Fertilization ◽

No Reduction ◽

Block Design ◽

Climatic Conditions ◽

Limited Information ◽

Herbicide Application ◽

Maize Hybrids ◽

Growing Seasons ◽

Randomized Block Design ◽

Different Levels

Maize hybrids have different levels of tolerance to the herbicide nicosulfuron, depending on the dose, the environment, the phenological stage of the plant and the timing of nitrogen fertilization, and phytotoxic effects can occur without proper management. There is also limited information on the selectivity of current genetically modified hybrids for other recommended herbicides, such as tembotrione. Thus, the objective of this study was to evaluate the effects of herbicides (tembotrione and nicosulfuron) and the timing of nitrogen fertilization on the yield of maize hybrids. The experimental design was a randomized block design, in a 4 × 2 factorial arrangement, with 4 replicates. The treatments consisted of four treatments [weeding; nicosulfuron + atrazine (20 and 32 + 1250 g ha-1 ai) and tembotrione + atrazine (75.6 + 1250 g ha-1 ai)] and two nitrogen fertilization times (0 and 7 days after application). Maize hybrids P30F53 Leptra, DKB 230PRO3 and KWS 9004PRO2 were assessed in two growing seasons (1st and 2nd harvest) during the 2016/2017 growing season. The percentages of weed control; phytotoxicity at 7, 14 and 21 days after application (DAA); plant height; number of rows per ear; and yield at harvest were evaluated. All herbicides were more effective in controlling weeds at the 1st harvest because of favourable climatic conditions. Nitrogen fertilization can be carried out on the same day as the application of the herbicides nicosulfuron and tembotrione with no reduction in yield for the hybrids P30F53 Leptra, DKB 230PRO3 and KWS 9004PRO2.

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Shoot Growth Curve Analysis of Wheat (Triticum aestivum L.) Receiving Different Levels of Boron and Iron

Journal of Agronomy ◽

10.3923/ja.2002.47.48 ◽

2001 ◽

Vol 1 (1) ◽

pp. 47-48

Author(s):

Khair Mohammad Kakar ◽

Muhammad Tariq . ◽

M. Raza Tareen . ◽

Wasi Ullah .

Keyword(s):

Triticum Aestivum ◽

Growth Curve ◽

Shoot Growth ◽

Triticum Aestivum L ◽

Curve Analysis ◽

Growth Curve Analysis ◽

Different Levels

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Modelling stomatal responses of spring wheat (Triticum aestivum L. cv. Turbo) to ozone and different levels of water supply

Environmental Pollution ◽

10.1016/0269-7491(94)p2600-e ◽

1995 ◽

Vol 87 (2) ◽

pp. 141-149 ◽

Cited By ~ 24

Author(s):

U. Grüters ◽

A. Fangmeier ◽

H.-J. Jäger

Keyword(s):

Triticum Aestivum ◽

Water Supply ◽

Spring Wheat ◽

Triticum Aestivum L ◽

Stomatal Responses ◽

Different Levels

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Breakdown and Movement of 2,4-D in the Soil Under Field Conditions

Weed Science ◽

10.1017/s0043174500066455 ◽

1976 ◽

Vol 24 (5) ◽

pp. 461-466 ◽

Cited By ~ 13

Author(s):

R. G. Wilson ◽

H. H. Cheng

Keyword(s):

Triticum Aestivum ◽

Acetic Acid ◽

Soil Profile ◽

Soil Surface ◽

Application Rate ◽

Soil Samples ◽

Field Conditions ◽

Herbicide Application ◽

Eastern Washington ◽

Dichlorophenoxy Acetic Acid

The fate of 2,4-D [(2,4-dichlorophenoxy)acetic acid] in the soil under winter wheat (Triticum aestivumL. ‘Nugaines’) and fallow cropping schemes was studied under the field conditions of eastern Washington in 1973 and 1974 using formulated dimethylamine salt and isooctyl ester of 2,4-D. Soil samples taken 1 hour after herbicide application showed that amine-treated plots retained considerably more applied 2,4-D than ester-treated plots. The rapidity of 2,4-D breakdown decreased gradually with time, and at the end of 6 months, an average of 0.04 ppm of 2,4-D remained in the sampled soil profile regardless of formulation, application rate, or cropping scheme. Loss of 2,4-D from the soil surface in runoff occurred when the plots were irrigated heavily one day after the herbicide application. The herbicide was also leached into the soil profile by both irrigation and natural precipitation. Herbicide concentrations in the sampled portion of the upper soil profile decreased during the summer and then increased slightly in the fall.

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Effect of a Pre-Irrigation Period on the Activity of Ethofumesate Applied to Dry Soil

Weed Science ◽

10.1017/s0043174500040327 ◽

1981 ◽

Vol 29 (6) ◽

pp. 712-717 ◽

Cited By ~ 4

Author(s):

David McAuliffe ◽

Arnold P. Appleby

Keyword(s):

Triticum Aestivum ◽

Zea Mays ◽

Sweet Corn ◽

Chemical Degradation ◽

Herbicide Application ◽

Irrigation Period ◽

Dry Soil ◽

Activity Loss ◽

Herbicide Activity ◽

Made In

Applications of ethofumesate [(±)-2-ethoxy-2,3-dihydro-3,3-dimethyl-5-benzofuranyl methanesulfonate] at rates from 0.3 to 1.4 kg/ha were made in the field to soils of 2 and 30% (w/w) soil moisture. After 2 to 4 days, all soils were irrigated to establish stands of either sweet corn (Zea maysL. ‘Jubilee’) or winter wheat (Triticum aestivumL. ‘Stephens’) used as bioassay species for ethofumesate activity. Ethofumesate, at most rates, was significantly less effective on both corn and wheat when applied to dry soil than to wet soil. In greenhouse studies, ethofumesate activity was significantly greater when incorporated into soil of 12% than 2% (w/w) moisture 2 or 4 days prior to irrigation. An increase in herbicide activity was apparent as the length of time between herbicide application and wetting increased from 2 to 4 days. Analysis of wet (20%, w/w) and dry (2%, w/w) soils treated with equal levels of ethofumesate revealed no loss of herbicide applied to wet soil over a 12-day period, but in the dry soil, the amount extracted after 12 days was 10% of the amount extracted at 0 days. These data and other considerations suggest that chemical degradation of ethofumesate is the most likely mechanism for the activity loss in dry soil.

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