scholarly journals Selectivity of Iodosulfuron-Methyl Association with ACCase Inhibitors and 2.4-D in Wheat and Barley Crops

2018 ◽  
Vol 36 (0) ◽  
Author(s):  
R.A.K. KARPINSKI ◽  
A.A.P. SILVA ◽  
E.O. HELVIG ◽  
C.D.G. MACIEL ◽  
S.B.C. LUSTOSA ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Hordeum Vulgare ◽  
Grain Yield ◽  
Block Design ◽  
Barley Cultivar ◽  
Wheat Cultivars ◽  
Negative Effects ◽  
Commercial Formulation ◽  
Synthetic Auxins ◽  
Randomized Complete Block Design

ABSTRACT: This research aimed to assess the selectivity of treatments involving the commercial formulations tank mixtures of iodosulfuron-methyl with herbicides ACCase inhibitors (fenoxaprop-p-ethyl and clethodim) and synthetic auxins (2.4-D), applied in post-emergence of wheat (Triticum aestivum) and barley (Hordeum vulgare) crops. Three experiments were conducted in the field, during the 2014 crop year. A randomized complete block design was used with 11 treatments and five replications. Treatments consisted of (g ha-1): 1) iodosulfuron-methyl (6.5), 2) fenoxaprop-p-ethyl (82.5), 3) fenoxaprop-p-ethyl + clethodim (55 + 54); 4) 2.4-D (335), 5, 6 e 7) iodosulfuron-methyl + fenoxaprop-p-ethyl (6.5 + 82.5; 6.5 + 110 and 6.5 + 165), 8) iodosulfuron-methyl + fenoxaprop + clethodim (6.5 + 55 + 54), 9) iodosulfuron + fenoxaprop-p-ethyl + 2.4-D (6.5 + 110 + 335), 10) iodosulfuron-methyl + fenoxaprop-p-ethyl + clethodim + 2.4-D (6.5 + 82.5 + 72 + 335) and 11) check without weeds. Associations of iodosulfuron-methyl + fenoxaprop-p-ethyl (6.5 + 82.5; 6.5 + 110 and 6.5 + 165 g ha-1) associations, as well as of iodosulfuron-methyl + fenoxaprop-p-ethyl + 2.4-D (6.5 + 110 + 335 g ha-1) were selective for BRS Campeiro and BRS Gralha azul wheat cultivars and did not feature symptoms of intoxication and significant losses in grain yield and hectoliter weight, when compared to the treatment with no application. For BRS Brau barley cultivar, only iodosulfuron-methyl + fenoxaprop-p-ethyl associations, in doses of 6.5 + 82.5 and 6.5 + 110 g ha-1 were feasible for selectivity. Clethodim addition in iodosulfuron-methyl + fenoxaprop-p-ethyl or iodosulfuron-methyl + fenoxaprop-p-ethyl + 2.4-D associations caused negative effects for wheat and barley crops. Commercial formulation of iodosulfuron-methyl (Hussar™) resulted in protection for damage effects of fenoxaprop-p-ethyl (Podium EW™) for studied crops.

scholarly journals THE EFFECT OF MOWING DATES AND DIFFERENT NITROGEN LEVELS ON YIELD CHARACTERISTICS OF BARLEY (HORDEUM VULGARE L.)

2021 ◽  
Vol 21 (no 1) ◽  
Author(s):  
Mohammed Salim Talib ◽  
Hasan Najim. Mansoor ◽  
Hayder Hilal abbas AL-Khafaji ◽  
Hayder Hilal abbas AL-Khafaji ◽  
Hayder Hilal abbas AL-Khafaji ◽  
...  
Keyword(s):  
Hordeum Vulgare ◽  
Grain Yield ◽  
Block Design ◽  
Winter Season ◽  
Hordeum Vulgare L ◽  
Nitrogen Levels ◽  
Randomized Complete Block Design ◽  
Green Fodder ◽  
Biological Yield ◽  
Nitrogen Percentage

A field experiment was carried out during the winter season 2014/2015 in one of the fields of Abi Gharq district, located 10 km west of the Babylon governorate. The randomized complete block design was used under split-plots arrangement with three replications. The main plots were included levels of nitrogen fertilizer (without fertilizer, 50, 100, 150 N, 200, 250 kg). while the sub-plots were included (without a mower, a mower after 45 days, a mower after 65 days, a mower after 85 days) after planting, The data were taken and analyzed according to the used design and the averages were tested according to the LSD test, and the results were summarized as follows: The date of mowing C1 (mower after 45 days of planting) was significantly higher by giving the highest average for the degree of fallowness and the index of harvest, and the percentage of nitrogen in the green fodder was 3.647, 37.63% and 1.837%, respectively. Treatment C0 (without mower) outperformed significantly by giving it the highest average of biological yield, grain yield and nitrogen percentage in grains, as it gave 15,114 tons. H-1 and 5.73 tons. H-1 and 1.242%, respectively The fertilizer level N5 (250 kg N. H-1) gave the highest average of the degree of lying, biological yield, grain yield, nitrogen percentage in green fodder and nitrogen content in grains, as it gave 3.854% and 7.571 tons. H-1 and 6.20 tons. % And 1.397%, respectively, We conclude from the results of the study that lack of without cutting to a significant increase in the degree of resting, biological yield and grain yield, and we conclude that the high levels of nitrogen led to a significant increase in the degree of lying, biological yield, grain yield, and the proportion of nitrogen in green fodder and grains

scholarly journals Main Stem and Tiller Contribution to Wheat Cultivars Yield Under Different Irrigation Regimes

2001 ◽  
Vol 44 (4) ◽  
pp. 325-330 ◽  
Author(s):  
Deonisio Destro ◽  
Édison Miglioranza ◽  
Carlos Alberto Arrabal Arias ◽  
Jefferson Marcos Vendrame ◽  
José Carlos Vieira de Almeida
Keyword(s):  
Grain Yield ◽  
Block Design ◽  
Total Yield ◽  
Triticum Aestivum L ◽  
Field Conditions ◽  
Main Stem ◽  
Wheat Cultivars ◽  
Normal Field ◽  
Randomized Complete Block Design ◽  
Water Treatments

The present study was carried out to determine the contribution of main stems and tillers to the total yield of two wheat cultivars (Triticum aestivum L.), Cocoraque and BH-1146, under two water treatments: a) normal field conditions, and; b) irrigation, in Londrina, PR, Brazil. The experiment was an eight replication randomized complete block design with treatments arranged in split-plots. Data on total grain yield, main stem grain yield, tillers grain yield, the ratio between tiller and total grain yield, yield components and other 17 traits were collected. The cultivar BH-1146 had a higher total grain yield in relation to Cocoraque under normal field conditions; i, e., under water stress. Main stem grain yield responded positively and significantly to irrigation which was the main cause of increased yield in both cultivars. The tiller grain yield contributed little to the total yield.

scholarly journals Effect of cultivar and seed rate on weed infestation and crop performance of wheat

2016 ◽  
Vol 27 (1) ◽  
pp. 20-26
Author(s):  
PK Halder ◽  
M Salim ◽  
SK Paul
Keyword(s):  
Grain Yield ◽  
Block Design ◽  
Experimental Treatment ◽  
Dry Weight ◽  
Wheat Cultivars ◽  
Seed Rate ◽  
Randomized Complete Block Design ◽  
Crop Performance ◽  
Weed Infestation ◽  
1000 Grain Weight

An experiment was carried out at the Agronomy Field laboratory of Bangladesh Agricultural University, Mymensingh during the period from November 2014 to March 2015 to study the effect of cultivar and seed rate on weed infestation and crop performance of wheat. Three wheat cultivars viz. BARI Gam 24, BARI Gam 25 and BARI Gam 26 and five seed rates viz. 80, 90, 100, 110 and 120 kg ha-1 were considered as the experimental treatment. The experiment was carried out in Randomized Complete Block Design with three replications. The cultivar and seed rate were significantly influenced on weed infestation and crop performance of wheat. The dry weight of weeds in cultivar BARI Gam 26 was the lowest (9.24 g m-2) compared to other cultivars. The lowest dry weight of weed was recorded in the seed rate of 120 kg ha-1 (7.57 g m-2) and the highest one (16.14 g m-2) was produced in seed rate of 80 kg ha-1. The highest plant height (93.27 cm), number of effective tillers plant-1 (3.69) and 1000-grain weight (44.51g) were produced in BARI Gam 25. The highest number of spikelet spike-1 (18.12) and grains spike-1 (34.51) were produced by BARI Gam 26. BARI Gam 26 produced the highest grain yield (2.51 t ha-1) which was as good as BARI Gam 25 (2.48 t ha-1). BARI Gam 26 produced the highest grain yield with 100 kg seed rate and also a good competitor against weeds. Seed rate was a reliable factor where increasing seed rate reduced the weed dry weight production. In conclusion, cultivation of BARI Gam 26 @100 kg ha-1 seeds may be cultivated for higher grain yield.Progressive Agriculture 27 (1): 20-26, 2016

scholarly journals Effect of Cultivar and Seed Rate on Weed Infestation and Crop Performance of Wheat

2021 ◽  
Vol 8 (1) ◽  
pp. 1-8
Author(s):  
Shanta Islam ◽  
Muhamad Salim ◽  
Md Saiful Kamal Azad ◽  
Md Rashedur Rahman
Keyword(s):  
Grain Yield ◽  
Block Design ◽  
Experimental Treatment ◽  
Dry Weight ◽  
Wheat Cultivars ◽  
Seed Rate ◽  
Field Laboratory ◽  
Randomized Complete Block Design ◽  
Crop Performance ◽  
Weed Infestation

An experiment was carried out at the Agronomy Field laboratory of Bangladesh Agricultural University, Mymensingh during the period from November 2015 to March 2016 to study the effect of cultivar and seed rate on weed infestation and crop performance of wheat. Three wheat cultivars viz. BARI Gom 22, BARI Gom 23 and BARI Gom 24 and four seed rates viz. 80, 100, 120 and 140 kg ha-1 were taken as the experimental treatment. The experiment was carried out in randomized complete block design (RCBD) with three replications. The cultivar and seed rate significantly influenced weed infestation and crop performance of wheat. The dry weight of weeds under cultivar BARI Gom 24 was the lowest (4.18 g m-2) compared to other cultivars. The lowest dry weight of weed was recorded in the seed rate of 120 kg ha-1 (3.67 g m-2) and the highest one (6.69 g m-2) was produced under the seed rate of 80 kg ha-1. The highest number of effective tillers plant-1 (4.05), total number of tillers plant-1 (4.53), number of grain spike-1 (19.85) and grain yield (1.56 g) were produced by BARI Gom 24. BARI Gom 24 produced the highest grain yield (1.56 t ha-1) which was as good as BARI Gom 22 (1.40 t ha-1). BARI Gom 24 produced the highest grain yield with 100 kg seed rate and also a good competitor against weeds. Seed rate was a reliable factor where increasing seed rate reduced the intensity of weed infestation and weed dry weight production. In conclusion, cultivation of BARI Gom 24 at the rate of 120 kg ha-1 seeds may be cultivated for higher grain yield. Res. Agric., Livest. Fish.8(1): 1-8, April 2021

scholarly journals EFFECT OF SOWING METHODS AND SEED RATE ON YIELD OF BREAD WHEAT (TRITICUM AESTIVUM L.) AT SOUTH ARI DISTRICT, SOUTH OMO ZONE, SNNPR, ETHIOPIA

2017 ◽  
Vol 5 (6) ◽  
pp. 175-180
Author(s):  
Awoke Tadesse ◽  
Tekle Yoseph ◽  
Misgana Mitiku
Keyword(s):  
Triticum Aestivum ◽  
Grain Yield ◽  
Bread Wheat ◽  
Block Design ◽  
Triticum Aestivum L ◽  
Seed Rate ◽  
Wheat Production ◽  
Cropping Season ◽  
Randomized Complete Block Design ◽  
Significant Area

Wheat is one of the most important cereal crops of the world and is a staple food for about one third of the world’s population. Despite the significant area of wheat production in the country, the mean national yield 1.3 t ha-1 is 24% below than mean yield for Africa and 48% below than global mean yield. A field experiment was carried out at Senegal and Selmamer during 2014 cropping season to determine the effects of sowing methods and seed rate on yield of bread wheat (Triticum aestivum L.). Treatments were two sowing methods namely row planting and broadcasting with six  Seed rate (kg/ha): 125, 150, 175, 200, 225 and 250 kg/ha.The experimental was laid in randomized complete block design (RCBD) with thee replications. The study result depicted that sowing method and seed rate had brought significant effect on the   yield of bread wheat. The maximum grain yield of 3.9 t ha-1 and the minimum 2.7 t ha-1 were obtained from seed rate of 125 kg ha-1 and 200 kg ha-1 respectively. And the maximum grain yield of 3.5 t ha-1 was obtained from row planting and the least 3.13 t ha-1 was recorded from broadcast method; from these output we can conclude that, using of seed rate of 125 kg ha-1 and row planting is advisable for bread wheat production in the Senegal and Senmamer kebeles and their vicinities to increased wheat production and productivity.

Influence of soil and N fertilizer on performance of barley and spring wheat cultivars

1992 ◽  
Vol 72 (3) ◽  
pp. 651-661 ◽  
Author(s):  
P. M. Carr ◽  
J. S. Jacobsen ◽  
G. R. Carlson ◽  
G. A. Nielsen
Keyword(s):  
Triticum Aestivum ◽  
Hordeum Vulgare ◽  
Grain Yield ◽  
Spring Wheat ◽  
N Fertilizer ◽  
Test Weight ◽  
Soil N ◽  
Wheat Cultivars ◽  
Yield Test ◽  
Different Soils

Fields often include several different soils with contrasting chemical and/or physical characteristics which may influence crop performance. Field experiments were conducted (i) to quantify differences in spring barley (Hordeum vulgare L.) and spring wheat (Triticum aestivum L.) grain yield, test weight, and protein on contrasting soils within single fields, and (ii) to determine interactions between N fertilizer and spring wheat cultivar performance on several different soils. Twelve barley and twelve wheat cultivars were established in a randomized complete block design on three different soils in a field during 1987. Soils affected grain yield, test weight, and protein of the barley cultivars by as much as 485 kg ha−1, 38 kg m−3, and 16 g kg−1, respectively. Corresponding differences for spring wheat were 456 kg ha−1, 50 kg m−3, and 16 g kg−1. Grain yield of one barley cultivar differed by as much as 966 kg ha−1 across three soils, while wheat grain yield differed by as much as 1271 kg ha−1. Significant soil × cultivar interactions were measured for at least one grain parameter with both crops (P < 0.10). In another experiment conducted nearby in 1987 and 1988, grain yield, test weight, and protein differed by as much as 2217 kg ha−1, 16 kg m−3, and 15 g kg−1, respectively, among soils where different spring wheat cultivars and several rates of N fertilizer were evaluated. Cultivar and N rate significantly influenced grain yield and test weight during both years and protein during 1987. Soil × N rate interactions were highly significant for both yield and protein during 1988, but not for test weight; nor were the soil × N rate interactions significant for any grain parameter during 1987. Soil × cultivar interactions were significant for both test weight and protein during both years, whereas cultivar × N rate interactions were not significant. These data suggest that in some instances soil conditions should influence cultivar recommendations.Key words: Triticum aestivum, Hordeum vulgare, N fertilizer, soil variability

scholarly journals Nutrient uptake, use efficiency and productivity of bread wheat (Triticum aestivum L.) as affected by nitrogen and potassium fertilizer in Keddida Gamela Woreda, Southern Ethiopia

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Temesgen Godebo ◽  
Fanuel Laekemariam ◽  
Gobeze Loha
Keyword(s):  
Triticum Aestivum ◽  
Grain Yield ◽  
Nutrient Uptake ◽  
Bread Wheat ◽  
Block Design ◽  
N Uptake ◽  
Fertilizer Application ◽  
Southern Ethiopia ◽  
K Fertilizer ◽  
Use Efficiency

AbstractBread wheat (Triticum aestivum L.) is one of the most important cereal crops in Ethiopia. The productivity of wheat is markedly constrained by nutrient depletion and inadequate fertilizer application. The experiment was conducted to study the effect of nitrogen (N) and potassium (K) fertilizer rates on growth, yield, nutrient uptake and use efficiency during 2019 cropping season on Kedida Gamela Woreda, Kembata Tembaro Zone Southern Ethiopia. Factorial combinations of four rates of N (0, 23, 46 and 69 kg Nha−1) and three rates of K2O (0, 30 and 60 kg Nha−1) in the form of urea (46–0-0) and murate of potash (KCl) (0-0-60) respectively, were laid out in a randomized complete block design with three replications. The results showed that most parameters viz yield, yield components, N uptake and use efficiency revealed significant differences (P < 0.05) due to interaction effects of N and K. Fertilizer application at the rate of 46 N and 30 kg K ha−1 resulted in high grain yield of 4392 kg ha− 1 and the lowest 1041 from control. The highest agronomic efficiency of N (52.5) obtained from the application of 46 kg N ha−1. Maximum physiological efficiency of N (86.6 kg kg−1) and use efficiency of K (58.6%) was recorded from the interaction of 46 and 30 kg K ha−1. Hence, it could be concluded that applying 46 and 30 kg K ha−1was resulted in high grain yield and economic return to wheat growing farmers of the area. Yet, in order to draw sound conclusion, repeating the experiment in over seasons and locations is recommended.

scholarly journals Genotype X Environment Interaction of Food Barley

2015 ◽  
Vol 21 ◽  
pp. 41-48
Author(s):  
Gebremedhin Welu
Keyword(s):  
Grain Yield ◽  
Block Design ◽  
Genotype X Environment Interaction ◽  
Environment Interaction ◽  
Genotype X Environment ◽  
Genotype Effect ◽  
Environment Effects ◽  
Randomized Complete Block Design ◽  
Barley Genotypes

The objective of this experiment was to estimate the magnitude of genotype X environment interaction on grain yield and yield related traits. Twelve varieties of food barley were included in the study planted in randomized complete block design with three replications. The ANOVA of combined and individual location revealed significant differences among the food barley genotypes for grain yield and other traits. The results of ANOVA for grain yield showed highly significant (p≤0.01) differences among genotypes evaluated for grain yield at Maychew and significant (p≤0.05) differences in Korem, Alage and Mugulat. The ANOVA over locations showed a highly significant (p≤0.01) variation for the genotype effect, environment effects, genotype X environment interaction (GEI) effect and significant (p≤0.05) variation for GEI effect of yield and for most of the yield related traits of food barley genotypes. Haftysene, Yidogit, Estayish and Basso were the genotypes with relatively high mean grain yield across all locations and they are highly performing genotypes to the area. Among locations, the highest mean grain yield was recorded at Korem and it was a suited environment to all the genotypes whereas Mugulat is unfavoured one. ECOPRINT 21: 41-48, 2014DOI: http://dx.doi.org/10.3126/eco.v21i0.11903

scholarly journals Green ear yield and grain yield of maize cultivars in competition with weeds

2010 ◽  
Vol 28 (1) ◽  
pp. 77-85 ◽  
Author(s):  
P.S.L. Silva ◽  
K.M.B. Silva ◽  
P.I.B. Silva ◽  
V.R. Oliveira ◽  
J.L.B. Ferreira
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Block Design ◽  
Corn Yield ◽  
Modern Agriculture ◽  
Maize Cultivars ◽  
Randomized Complete Block Design ◽  
Ear Height ◽  
Herbicide Use ◽  
Ground Part

The reduction in herbicide use is one of the greatest interests for modern agriculture and several alternatives are being investigated with this objective, including the adoption of cultivars that suppress weeds. The objective of this study was to verify if maize cultivars develop differently, in competition with weeds, to produce green ears and grain. Randomized complete block design was used, with split-plots and five replications. Cultivars DKB 390, DKB 466, DKB 350, AG 7000, AG 7575 and Master, were evaluated in the plots, without weeding and two weedings (at 22 and 41 days after sowing) in sub plots. Twenty-one species were identified in the experimental area, the most frequent being Gramineae (Poaceae), Euphorbiaceae, Leguminosae (Fabaceae) and Convolvulaceae species. There was no difference in the dry biomass above-ground part of the weeds in the plots of the evaluated cultivars. The cultivars behaved similarly in treatments with or without hoeing, except for plant height and ear height evaluations. Without hoeing, plant height increased in cultivar DKB 390, while plant height and ear height decreased in cultivar AG 7575. In the other cultivars, these traits did not change under weed control. The presence of weeds decreased the values of all traits employed to assess green corn yield, with the exception of the total number of green ears and grain yield.

scholarly journals Effects of Municipal Wastewater Irrigation on Yield and Fertilizer Requirement of Wheat (Triticum aestivum L.) in Bangladesh

2016 ◽  
Vol 14 (1) ◽  
pp. 01-14 ◽  
Author(s):  
M A Mojid ◽  
G C L Wyseure ◽  
S K Biswas
Keyword(s):  
Triticum Aestivum ◽  
Grain Yield ◽  
Fresh Water ◽  
Biomass Production ◽  
Crop Production ◽  
Municipal Wastewater ◽  
Biomass Yield ◽  
Block Design ◽  
Fertilizer Requirement ◽  
Raw Wastewater

Due to increasing scarcity of fresh water, use of unconventional water source (e.g., wastewater) in irrigation has now become important. However, inclusive information on the effects of wastewater on crop production and soil health is necessary for such intervention. This study was designed to evaluate these effects by demonstrating the contribution of municipal wastewater (hereafter called wastewater) on yield and nutrient requirement of wheat (<i>Triticum aestivum</i> L.) cv Shatabdi. Five irrigation treatments - I1, I2, I3, I4 and I5  were tested in a Randomized Complete Block Design (RCBD) with three replications during November-March of 2007-2008, 2008-2009, 2009-2010 at the experimental field of the Bangladesh Agricultural University,  Mymensingh. The treatments I2-I5 consisted of blended wastewater and I1 of fresh water (control). The ratio of wastewater to total irrigation water was 0.25, 0.50, 0.75 and 1.0 in I2, I3, I4 and I5, respectively. Wheat was cultivated with three irrigations and recommended doses of fertilizer in three consecutive years. Wastewater contained nitrogen (N), phosphorus (P) and potassium (K) @ 17.5, 3.7 and 10.3 mg/L, respectively, and irrigation by raw wastewater (I5) contributed 19.1, 15.1 and 21.7% of the recommended N, P and K, respectively. Biomass yield increased with increasing fraction of wastewater in irrigation. Grain yield increased for the wastewater fraction of 0.50 - 0.75 in irrigation but decreased when irrigation was applied by raw wastewater. Excess fertilizer (under I5) boosted up growth of wheat, but did not contribute to the grain yield. Number of grains per spike; and grain, straw and biological yields significantly (p = 0.05) increased due to the contribution of wastewater. Wastewater significantly improved grain and biomass production, with the largest value obtained in I4 (4.61 t/ha grain yield and 11.36 t/ha biomass yield).  Raw wastewater in combination with recommended fertilizer doses caused over-fertilization that contributed only in biomass production but not in grain production of wheat and irrigation by wastewater substantially reduced fertilizer requirement of wheat.The Agriculturists 2016; 14(1) 01-14

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