scholarly journals Changes in Seed Yield of Sunflower (Helianthus annuus L.) in relation to the Seed Rate and Method of Sowing

2020 ◽  
Vol 9 (2) ◽  
pp. 23-32
Author(s):  
Lokendra Singh ◽  
Tulsi Parajuli
Keyword(s):  
Grain Yield ◽  
Seed Yield ◽  
Interaction Effect ◽  
Block Design ◽  
Grain Weight ◽  
Spring Season ◽  
Thousand Grain Weight ◽  
Head Diameter ◽  
Seed Rate ◽  
Randomized Complete Block Design

Inappropriate seed rate and sowing method contribute a significant role in low productivity of sunflowers. So, a study was conducted to assess the effect of different seed rates and sowing methods on the yield of sunflower in Ghodaghodi Municipality ward no. 2, Sandepani, far-west province, Kailali, Nepal, during spring season in 2018. The three different seed rates (8 Kg/ha, 10 Kg/ha and 12 Kg/ha) combined with three different sowing methods (broadcasting, line sowing and ridge sowing). A randomized complete block design in a 3×3 factorial arrangement with three replicates per treatment was applied. The indigenous variety of sunflower was used as a test crop. The highest stem diameter was recorded with the lowest seed rate, which remained unaffected by different sowing methods. Head diameter, seeds per head and thousand-grain weight were maximum in plants receiving seed rate of 8 kg/ha. However, the highest (2.13 t/ha) and the lowest (1.76 t/ha) grain yield were achieved with the seed rates of 10 kg/ha and 12 Kg/ha, respectively. Regarding sowing methods, head diameter, seeds per head, thousand-grain weight and grain yield (2.68 t/ha) obtained in the ridge method were statistically superior over those, obtained in line and broadcasting methods. The interaction effect of seed rate and sowing method on seeds per head suggested that maximum seeds per head were obtained with 8 kg/ha seed sown in the ridge. Our study recommended 8 kg/ha seed rate and ridge sowing of sunflower performed best in grain yield.

scholarly journals Response Of Maize Varieties To Sowing Dates In Inner Terai Region, Dang, Nepal

2019 ◽  
Vol 2 (2) ◽  
pp. 27-31
Author(s):  
Pukar Khanal ◽  
Rupak Karn ◽  
Pratibha Budhathoki Chhetri ◽  
Samita Karki ◽  
Shrawan Kumar Sah
Keyword(s):  
Unit Area ◽  
Block Design ◽  
Climatic Conditions ◽  
Spring Season ◽  
Thousand Grain Weight ◽  
Maize Hybrids ◽  
Sowing Dates ◽  
Maize Varieties ◽  
Randomized Complete Block Design ◽  
Hybrid Maize

AbstractSowing dates and varieties affect the productivity of maize. A field experiment was conducted to find out the response of maize hybrids to sowing dates on growth and productivity of maize in spring season at Lamahi, Dang in 2019. The experiment was laid out in two factor factorial Randomized Complete Block Design with four replications. The treatment consisted of combination of three different sowing dates (February 1, February12 and February 23) and two maize varieties (Arun-2 i.e. OPV and hybrid Bioseed-9220).The result revealed that earlier planting on February 1 produced the highest yield (8265 Kg ha-1) which was significantly superior than latter planting of February 12(6099 kg ha-1)and February 23 (5934 kg ha-1).The higher yield in earlier planting was due to significantly higher no of kernel per ear, non-significant but higher number of cob per unit area, thousand grain weight. Similarly, Bioseed 9220 produced higher yield (7798 kg ha-1) compared to Arun-2 (5,734 kg ha-1). The higher yield of hybrid Bioseed 9220 was because of higher number of cob per unit area harvested and more number of kernel per cob. Therefore, earlier planting with hybrid maize is recommended in spring season of Dang and locations with similar climatic conditions for higher productivity of maize.

Varietal performance of transplant aman rice under different hill densities

1970 ◽  
Vol 34 (1) ◽  
pp. 33-39 ◽  
Author(s):  
MAT Sohel ◽  
MAB Siddique ◽  
M Asaduzzaman ◽  
MN Alam ◽  
MM Karim
Keyword(s):  
Grain Yield ◽  
Key Words ◽  
Harvest Index ◽  
Block Design ◽  
Grain Weight ◽  
Row Spacing ◽  
Lower Yield ◽  
Straw Yield ◽  
Randomized Complete Block Design ◽  
Biological Yield

An experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh from July to December 2004 to evaluate the effect of hill spacing on the performance of BRRI dhan40 and BRRI dhan41 as Transplant aman crop. The experiment consisted of five hill spacings viz., 5cm. 10cm, 15 cm, and 25 cm where row to row spacing of 25 cm was kept constant for all treatments. The experiment was laid out in randomized complete block design with four replications. The 25 cm x 5 cm hill spacing produced the tallest plant, highest total number of tillers/hill, bearing tillers/hill lowest number of non-hearing tillers/hill, grain yield and harvest index, while 25 cm x 5 cm hill spacing produced the highest number of sterile spikelets/panicle, straw yield and biological yield. BRRI dhan41 produced higher grain yield (4.7 t/ha) which was the contribution of higher number of grains/panicle and heavier grain weight. Lower yield (4.51 t/ha) was recorded in BRRI dhan40.Key Words: Varietal performance; T. aman rice; hill density.DOI: 10.3329/bjar.v34i1.5750Bangladesh J. Agril. Res. 34(1) : 33-39, March 2009

Performance, heterosis and heritability in selected tropical maize single, double and three-way cross hybrids

2002 ◽  
Vol 138 (1) ◽  
pp. 21-28 ◽  
Author(s):  
G. B. SALEH ◽  
D. ABDULLAH ◽  
A. R. ANUAR
Keyword(s):  
Grain Yield ◽  
Agronomic Traits ◽  
Block Design ◽  
Grain Weight ◽  
Broad Sense ◽  
Broad Sense Heritability ◽  
Tropical Maize ◽  
Randomized Complete Block Design ◽  
Parental Inbred ◽  
Ear Number

A series of tropical maize hybrids, involving 10 single, four double and four three-way crosses were evaluated with their parental inbred lines and three control varieties, at Universiti Putra Malaysia, Serdang, Malaysia, in a randomized complete block design, with three replications. The objectives were to identify hybrids superior for yield, yield components and other agronomic traits, to estimate heterosis revealed by the hybrids, and to estimate broad-sense heritability for important characters in the populations. The hybrids were found to vary highly for grain yield and most other traits measured. High estimates of heterosis were shown by grain yield, ear weight and grain weight per ear, moderate for plant and ear heights, shelling percentage, ear diameter, number of kernel rows per ear, number of kernels per ear row and 100-grain weight. The hybrids flowered and matured earlier than their respective inbred parents. Estimates of broad-sense heritability also varied with characters. Moderate heritability was shown for grain yield indicating a substantial amount of genetic variation in this population of hybrids. Low and negligible heritability for days to silking and 100-grain weight indicate that these traits were very much influenced by environmental factors. Based on the overall performance of the hybrids, the single cross, SC-2, the double cross, DC-11 and the three-way cross, TWC-15, were found to have high potential. No obvious differences were observed in performance among the three categories of hybrids, the single, double and three-way crosses.

scholarly journals Study of Correlation and Path Analysis Between Grain Yield and Yield Related Traits in Wheat

2018 ◽  
Vol 7 (1) ◽  
pp. 57-67
Author(s):  
Maysoun M. S. ◽  
Salih H. F. Al-salim ◽  
Reem Al-edelbi ◽  
Naoman S. M.
Keyword(s):  
Grain Yield ◽  
Direct Effect ◽  
Block Design ◽  
Grain Weight ◽  
Path Coefficient ◽  
Thousand Grain Weight ◽  
Path Coefficient Analysis ◽  
Grain Number Per Spike ◽  
Correlation And Path Analysis ◽  
Corporate Effect

Agricultural experiment carried out during the 2014-2015agricultural season winter wheat planting classAba99in tow sites Al-Shattra and Al-Dwayah in Al-NaseriahExplanatory farmers' fields covered by the national program for the development of the cultivation of wheat in Iraq and four treatments were applied on wheat(Laser plus weed controlling, Laser plus weed controlling plus sulfur, Laser plus weed controlling plus sulfur plus other elements, Control for comparing), in Randomized Complete Block Design RCBD with three replications, Correlations and path coefficient analysis between (number of brunches, Spike Length, number of spikes/m2, grains number per spike, thousand grain weight and plant grain yield), Results showed that grain yield  had a positive significant correlation with each of number of spikes/m2 and grains number per spike (0.711**, 0.465**) respectively.Results of path coefficient analysis showed that the direct effect of number of spikes/m2  on grain yield was high and positive(0.5350), while the indirect effectsfor each of number of brunches and number of grains  per spike and thousand grain weight on grain yield wasmedium and positive (0.2571, 0.2557, 0.2434) respectively, and also the indirect effect for grain number per spike on grain yield through number of spikes/m2 was positive and medium(0.2479). Results also showed that number of spikes/m2 had  the highest contribution in yield as a direct effect 28.621%, followed by the corporate effect of number of spikes/m2  and number of grains in spike12.674%

scholarly journals Effect of Planting Dates on the Growth, Yield and Quality of Three Cultivars of Sorghum (Sorghum bicolor L. Moench)

2021 ◽  
Vol 904 (1) ◽  
pp. 012019
Author(s):  
H A Ajaj ◽  
Y A Mohammed ◽  
A AM Alrubaya ◽  
A MS Addaheri
Keyword(s):  
Grain Yield ◽  
Leaf Area ◽  
Block Design ◽  
Growth Yield ◽  
Spring Season ◽  
Planting Dates ◽  
Yield And Quality ◽  
Randomized Complete Block Design ◽  
Sorghum Bicolor L

Abstract A field study was carried out during the spring season of 2017 in the fields of a farmer in the district of Habbaniyah, which is 70 km west of Baghdad, to study the effect of three planting dates (15 March, 1 April and 15 April) on the growth, yield and quality of three cultivars of sorghum (Babel, Warka and Rabeh). The implementation of the experiment was according to a randomized complete block design (R.C.B.D) with split-plot arrangement with three replications. The results of the experiment indicated that the cultivar Rabeh was superior in most of the studied traits such as leaf area (3968 cm2), number of grains per head (2659.00 grains head-1), weight of grains per head (63.41 g) and grain yield (7.44 ton ha-1), while the Babel variety was superior in the percentage of protein (12.21%). As for planting dates, the date of April 1 was superior in most of the studied traits, such as leaf area (3635.33 cm2), number of grains per head (2670.33 grains head-1), weight of grains per head (62.12 g), grain yield (7.55 ton ha-1) and the percentage of protein (11.49%).

scholarly journals Effects of glyphosate and foliar fertilizers on the glyphosate resistant (GR) soybean

2019 ◽  
pp. 1251-1257
Author(s):  
César Tiago Forte ◽  
André Dalponte Menegat ◽  
Leandro Galon ◽  
Luciane Renata Agazzi ◽  
Milena Barreta Franceschetti ◽  
...  
Keyword(s):  
Glutamic Acid ◽  
Grain Yield ◽  
Block Design ◽  
Nutrient Deficiency ◽  
Grain Weight ◽  
Control Treatment ◽  
Thousand Grain Weight ◽  
Renewable Materials ◽  
Soybean Crop ◽  
Randomized Block Design

Currently the soybean crop is responsible for a great share of the protein consumed by humans and animals, it is also a source of oil and renewable materials for the industry. Due to the importance of soybeans worldwide, especially genetically modified soybeans (resistant to glyphosate - GR), the improvement in yield indexes became the targets of promising research. The objective of this work was to evaluate the responses of the “GR” soybean crop as a function of glyphosate herbicide and foliar fertilizer, under soil without nutrient deficiency. The experiment was conducted in a randomized block design with four replications, consisted of two factors. Factor A was consisted by glyphosate (1080 and 2160 g a.e ha-1) and factor B by foliar fertilizers (Fertilizer A – Mg= 5%, Mn= 0,5%, Mo= 0.5%, L-Glutamic acid= 5% and glycine betaine 3%; Fertilizer B - Zn (5%), Mn (3%), Cu (0,5%), B (0.5%) and S (4%); Fertilizer C - Mo and L-Glutamic acid). The treatments were applied isolated and in mixtures, plus the control treatment, totalizing 21 treatments. The variables evaluated were phytotoxicity at 14 and 21 DAT, a thousand-grain weight and grain yield. The analysis of variance was performed and, when significant, the comparison of groups of treatments using orthogonal contrasts was applied to all variables. Soybean yield was also compared to the means of the treatments by the Scott-Knott test (p≤0.05). Phytotoxicity was detected in the soybean crop at 14 DAT with the application of glyphosate, foliar fertilizers and the association of the two products. However, only the highest dose of glyphosate, with or without foliar fertilizers, generally reduced crop grain yield. In addition, the application of foliar fertilizers isolated and associated with glyphosate, in soils with adequate levels of nutrients, does not increase thousand-grain weight or grain. It is concluded that the glyphosate dose for soybeans should be respected and foliar fertilizers should be carefully studied before recommendation.

scholarly journals Effects of Variety and Spacing on Yield Indices of Open-Pollinated Maize in Asaba Area of Delta State

2013 ◽  
Vol 2 (4) ◽  
pp. 1 ◽  
Author(s):  
E. C. Enujeke
Keyword(s):  
Grain Yield ◽  
Block Design ◽  
Grain Weight ◽  
Factorial Experiment ◽  
State University ◽  
Plant Spacing ◽  
Maize Production ◽  
Teaching And Research ◽  
Randomized Complete Block Design ◽  
Delta State University

<p>This study was carried out in the Teaching and Research Farm of Delta State University, Asaba Campus (Nigeria) from March to December in 2008 and replicated between March and December, 2009, to evaluate the effects of variety and spacing on yield indices of Open-pollinated maize. It was a factorial experiment carried out in a Randomized Complete Block Design (RCBD) with four replicates. Four open-pollinated varieties (Suwan -1- SR, ACR97, BR9922-DMRSF<sub>2</sub> and AMATZBRC<sub>2</sub>WB) were evaluated under three different plant spacing for such yield indices as number of cobs/plant, cob length, grain weight and number of grains/cob of maize. The results obtained indicated that variety BR9922-DMRSF<sub>2</sub> was outstanding with number of cobs/plant of 1.7 in both 2008 and 2009, cob length of 27.7 cm and 26.7 cm in 2008 and 2009, respectively. Its grain weight was 4.7 t/ha in 2008 and 4.9 t/ha in 2009, and its number of grain/cob was 467.7 in 2008, and 463.9 in 2009. Plants sown at spacing of 75 cm x 15cm had higher number of cobs/plant of 1.9 in both 2008 and 2009.Their grain weights (t/ha) were 5.0 in 2008 and 5.2 in 2009, their cob lengths were 18.6cm in 2008 and 20.1cm in 2009, while their number of grains/cob were 363.0 in 2008, and 369.0 in 2009. The results of interaction showed that except variety x space, the parameters investigated were all significantly (P &lt; 0.05) different and affected yield indices of open-pollinated maize. Based on the findings of the study, it was recommended that (i) open-pollinated variety BR9922-DMRF<sub>2 </sub>be grown in the study area for increased grain yield indices of maize. (ii) Plant spacing of 75 cm x 15 cm which resulted in higher number of cobs/plant and higher grain weight be adopted in maize production.</p>

scholarly journals Analysis of genetic variability, heritability and genetic advance for yield and yield associated traits in some promising advanced lines of rice

2015 ◽  
Vol 26 (1) ◽  
pp. 26-31 ◽  
Author(s):  
MA Islam ◽  
SA Raffi ◽  
MA Hossain ◽  
AK Hasan
Keyword(s):  
Genetic Variability ◽  
Block Design ◽  
Grain Weight ◽  
Genetic Advance ◽  
Thousand Grain Weight ◽  
Randomized Complete Block Design ◽  
Days To Maturity ◽  
Additive Gene ◽  
High Heritability ◽  
Grain Width

A field experiment was conducted using twenty three rice genotypes including three check varieties during the period from June to December, 2013, at the Agronomy Field Laboratory, Department of Agronomy, Bangladesh Agricultural University, Mymensingh to study genetic variability, heritability and genetic advance (GA) for yield and yield associated traits in rice. The experiment was laid down in a randomized complete block design with three replications. Plant height, number of filled grains per panicle, days to 50% flowering, thousand grain weight, grain width and grain yield showed relatively high genotypic co-efficient of variation (GCV) and phenotypic co-efficient of variation (PCV) estimates. The PCV were higher than GCV for all eight traits indicating that they all interacted with the environment to some extent. High heritability was obtained for grain width (88.54%), followed by days to 50% flowering (87.61%), thousand grain weight (81.96%), grain length (81.94%), days to maturity (81.81%) and number of filled grains per panicle (78.19%) which indicates high heritable portion of variation. High to medium estimates of heritability and genetic advance were obtained for number of filled grains per panicle (18.97), days to 50% flowering (11.89), days to maturity (12.16) indicating the roles of additive gene action and a good scope of selection using their phenotypic performance. Considering, all of these characters, filled gains per panicle and days to 50% flowering and maturity were important yield related traits and could be used for selection in rice breeding programs.Progressive Agriculture 26:26-31, 2015

Foliar fertilization of organic sunflower, enhanced yield components and seed yield in the humid tropics

Helia ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Victor I. O. Olowe ◽  
James Fadeyi ◽  
Patience Odueme ◽  
Damilare Aderonmu ◽  
Ayodele Otaiku
Keyword(s):  
Seed Yield ◽  
Agricultural Research ◽  
Foliar Application ◽  
Block Design ◽  
Humid Tropics ◽  
Organic Fertilizers ◽  
Head Diameter ◽  
Cropping Season ◽  
Randomized Complete Block Design ◽  
And Control

Abstract In a two year experiment carried out on the organic research plots of the Institute of Food Security, Environmental Resources and Agricultural Research, Nigeria. Two liquid organic fertilizers (ARATI NAWOZ {2.01% N} and ARATI BAJA {1.01% N}) and control were applied to four sunflower varieties (SAMSUN 1, SAMSUN 2, SAMSUN 3 and SAMSUN 4) during the late cropping season (July – Nov.) of 2016 and 2017 to evaluate their agronomic response. The experiment was laid out in a randomized complete block design using a 4 × 3 factorial arrangement in three replicates. Data were collected on plant height at maturity, head diameter and weight, weight and number of seeds per head, 100 seed weight and seed yield. The varietal effect was significant (P < 0.05) on head diameter and weight, and number and weight of seeds per head, and seed yield in 2016. However, during the markedly dry 2017, the varietal effect was not significant for any trait measured. Foliar application of ARATI NAWOZ significantly (P < 0.05) increased height at maturity, the weight of seeds and head per plant and seed yield relative to the control in both years. Significant Variety × Fertilizer interaction effect was also recorded on the height at maturity, head diameter and weight, and seed yield in 2016. SAMSUN 4 (975.6 kg/ha) produced significantly (P < 0.05) higher seed yield than SAMSUN 1 (789.82 kg/ha) and SAMSUN 2 (778.54 kg/ha) in 2016. The efficacy of the application of both fertilizers was on par for most traits in both years. On average, the application of organic fertilizers resulted in a 15.76 and 69.02% increase in seed yield relative to the control in 2016 and 2017, respectively. ARATI NAWOZ and ARATI BAJA appeared promising for sunflower production in the humid tropics.

scholarly journals Effects of spacing and nitrogen levels on yield and yield contributing characters of maize

2016 ◽  
Vol 14 (1) ◽  
pp. 43-48 ◽  
Author(s):  
MM Rahman ◽  
SK Paul ◽  
MM Rahman
Keyword(s):  
Grain Yield ◽  
Harvest Index ◽  
Block Design ◽  
Grain Weight ◽  
Yield Attributes ◽  
Nitrogen Levels ◽  
Randomized Complete Block Design ◽  
Stover Yield ◽  
Effect On Yield ◽  
1000 Grain Weight

An experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during November 2014 to April 2015 to investigate the effect of planting spacing and nitrogen levels on yield attributes and yield of maize cv. Khaibhutta. The experiment comprised three nitrogen levels viz. 50, 100 and 150 kg N ha-1 and five plant spacings viz. 75 cm × 25 cm, 75 cm × 20 cm, 50 cm × 25 cm, 50 cm × 20 cm and 100 cm × 20 cm. The experiment was laid out in a randomized complete block design with three replications. Results revealed that nitrogen levels and plant spacing had significant effect on yield attributes and yield of Khaibhutta. The highest number of cobs plant-1, grains row-1, grain yield and stover yield were recorded with 150 kg N ha-1 followed by 100 kg N ha- 1and the lowest values were observed in 50 kg N ha-1. The highest number of cobs plant-1, grain rows cob-1, grains row-1, grains cob-1, 1000-grain weight, grain yield and harvest index were recorded at 75 cm × 25 cm spacing. In contrast, the closest spacing of 50 cm x 20 cm produced the lowest values of grain rows cob-1, grains row-1, grains cob-1, 1000-grain weight and grain yield. In case of interaction, the highest grain yield and harvest index were obtained at 75 cm × 25 cm spacing fertilized with 150 kg N ha-1. The lowest values of the above parameters were recorded in the closest spacing 50 cm × 20 cm with 50 kg N ha-1. From this study it may be concluded that maize (cv. Khaibhutta) can be cultivated at the spacing of 75 cm × 25 cm with 150 kg N ha-1 for appreciable grain yield.J. Bangladesh Agril. Univ. 14(1): 43-48, June 2016

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