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

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.

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Association and Path Coefficient Analysis of Grain Yield and Its Attributing Traits in Different Genotypes of Wheat (Triticum aestivum L.)

International Journal of Applied Sciences and Biotechnology ◽

10.3126/ijasbt.v5i4.18769 ◽

2017 ◽

Vol 5 (4) ◽

pp. 449-453 ◽

Cited By ~ 1

Author(s):

Manoj Kandel ◽

Arjun Bastola ◽

Pradeep Sapkota ◽

Omprakash Chaudhary ◽

Pratiksha Dhakal ◽

...

Keyword(s):

Grain Yield ◽

Harvest Index ◽

Block Design ◽

Triticum Aestivum L ◽

Path Coefficient ◽

Path Coefficient Analysis ◽

Animal Science ◽

Randomized Complete Block Design ◽

Effective Selection ◽

Positive Direct

Forty-one wheat genotypes were tested in randomized complete block design with three replications at experimental farm of Institute of Agriculture and Animal Science Paklihawa, Rupendehi, Nepal in 2014 spring season. The objective of this study was undertaken to estimate the correlation and path coefficient of yield and its contributing traits The data showed that the grain yield had significant associated with biomass and significant correlation with number of effective tillers (0.36*), thousand grain weight (0.376*) and harvest index (0.37*). Path coefficient analysis revealed maximum positive direct contribution towards yield by biomass (0.94) and harvest index (0.3).The study suggested that these traits may serve as effective selection attributes during breeding program for yield improvement in wheat.Int. J. Appl. Sci. Biotechnol. Vol 5(4): 449-453.

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

Progressive Agriculture ◽

10.3329/pa.v27i1.27530 ◽

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

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Mode of inheritance of low-N tolerance adaptive traits in wheat (Triticum aestivum L.) under contrasting nitrogen environments

Spanish Journal of Agricultural Research ◽

10.5424/sjar/201715210808 ◽

2017 ◽

Vol 15 (2) ◽

pp. e0702

Author(s):

Ahmed M. M. Al Naggar ◽

Reda Shabana ◽

Mosaad M. Abd-El-Aleem ◽

Zainab El-Rashidy

Keyword(s):

Grain Yield ◽

Block Design ◽

Triticum Aestivum L ◽

Nitrogen Efficiency ◽

Yield Traits ◽

Narrow Sense Heritability ◽

Additive Variance ◽

Dominance Variance ◽

Randomized Complete Block Design ◽

Use Efficiency

Because of essential economic and ecological concerns, there is increased interest worldwide in developing wheat cultivars that are more efficient in utilizing nitrogen (N) and better suited to N limitations. The objective of the present investigation was to get information on the type of gene action controlling the inheritance of wheat low-N tolerance traits in order to start a breeding program for improving such traits. Six parents of contrasting low-N tolerance were crossed in a diallel fashion. Evaluation of 6 parents, 15 F1crosses and 15 F2 crosses was done using a randomized complete block design with three replications under two levels of soil N, i.e. low-N (0 kg N/ha) and high-N (180 kg N/ha).The magnitude of dominance variance inF2's for all studied traits was much greater than that of additive variance under both high N and low N, suggesting that selection should be postponed to later segregating generations in order to eliminate masking effects of dominance variance and take advantage of the additive variance for the improvement of nitrogen use efficiency and grain yield traits. Narrow-sense heritability (h2n) in F2's was generally of higher magnitude under low-N than high-N, suggesting that it is better to practice selection for studied nitrogen efficiency and grain yield traits under low-N conditions to obtain higher values of selection gain.

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

Research in Agriculture Livestock and Fisheries ◽

10.3329/ralf.v8i1.53260 ◽

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

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

International Journal of Research -GRANTHAALAYAH ◽

10.29121/granthaalayah.v5.i6.2017.2012 ◽

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.

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

Planta Daninha ◽

10.1590/s0100-83582018360100026 ◽

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.

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Genotype X Environment Interaction of Food Barley

Ecoprint An International Journal of Ecology ◽

10.3126/eco.v21i0.11903 ◽

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

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

Planta Daninha ◽

10.1590/s0100-83582010000100010 ◽

2010 ◽

Vol 28 (1) ◽

pp. 77-85 ◽

Cited By ~ 5

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.

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Residual effects of superficial liming on tropical soil under no-tillage system

Pesquisa Agropecuária Brasileira ◽

10.1590/s0100-204x2016000900063 ◽

2016 ◽

Vol 51 (9) ◽

pp. 1633-1642 ◽

Cited By ~ 6

Author(s):

Claudio Hideo Martins da Costa ◽

Carlos Alexandre Costa Crusciol ◽

Jayme Ferrari Neto ◽

Gustavo Spadotti Amaral Castro

Keyword(s):

Grain Yield ◽

Dry Matter ◽

Block Design ◽

Residual Effects ◽

Available Phosphorus ◽

Long Term Effects ◽

Matter Production ◽

Randomized Complete Block Design ◽

Tillage System

Abstract The objective of this work was to evaluate the long-term effects of the surface application of lime on soil fertility and on the mineral nutrition and grain yield of soybean, and of black oat and sorghum in crop succession. The experiment was carried out on a clayey Oxisol, in a randomized complete block design, with four replicates. Treatments consisted of lime the rates of 0, 1,000, 2,000, and 4,000 kg ha-1, applied in October 2002 and November 2004. Soil samples were collected at five soil layers, down to 0.60-m depth. Surface liming was effective in reducing soil acidity and increasing Ca2+ and Mg2+ contents in the subsurface. Moreover, it increased available phosphorus contents and soil organic matter in the long term (48 to 60 months after the last lime application). Surface liming improved plant nutrition, mainly for N, Ca, and Mg, and increased dry matter production and grain yield of the crops, even in years with regular distribution of rainfall. The greatest productivities of soybean, black oat, and sorghum were obtained with the respective estimated lime doses of 4,000, 2,333, and 3,281 kg ha-1, for shoot dry matter, and of 2,550, 3,555, and over 4,000 kg ha-1, for grain yield.

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