scholarly journals Productivity of Cowpea (Vigna unguiculata (L) Walp) genotypes under Varying Population Densities

2021 ◽  
pp. 4089-4100
Author(s):  
Afolabi Michael Segun ◽  
Ojeleye Abiola Elizabeth ◽  
Olalekan Kazeem Kolapo ◽  
Shittu Kabiru Alani
Keyword(s):  
Population Density ◽  
Grain Yield ◽  
Plant Height ◽  
Interaction Effect ◽  
Yield Components ◽  
Dry Matter ◽  
Growth Parameters ◽  
Appreciable Effect ◽  
Population Densities ◽  
Flower Production

To investigate the influence of three population densities (88,000, 44,000, and 29,000 plants/ha) on the growth and yield of five cowpea varieties (IT97K-461, IT97K-568-18, IT98K-131-2, IT99K-1060 and IT99K-`245), a field experiment was conducted at Teaching and Research farm of Landmark University. Growth parameters such as germination count, plant height, and number of trifoliate leaves per plant, number of branches per plant, flower production dynamics and dry matter determination were measured, while harvest index, shelling percentage, number of seeds per pod, see weight pods per plant and grain yield were measured at harvest as yield components. Data were subjected to statistical analysis of variance (ANOVA) using SAS Institute. Significant means were separated using Duncans Multiple Range Test at 5% probability level. Results revealed that there were no constant trends in growth parameters response to population density. Plant height and flower production decreased with increased population density, while number of leaves per plant and dry matter increased with increasing population density. There was no appreciable effect of population density on branching. All these parameters were significantly (p≤0.05) affected with variety, while there was no significant (p≤0.05) interaction effect. Most yield components decreased with increasing population density while grain yield however, slightly increased with increasing population density. All yield parameter and grain yield significantly varied with variety, while there were no appreciable interaction effect. In conclusion, a population density of 88,000 plants /ha gives the highest growth and grain yield. While, variety, IT97-568-18 gives the higher growth and grain yield than other varieties studied.

Effect of soybean population density on soybean yield, nitrogen accumulation and residual nitrogen

1988 ◽  
Vol 28 (1) ◽  
pp. 99 ◽  
Author(s):  
MJ Blumenthal ◽  
VP Quach ◽  
PGE Searle
Keyword(s):  
Population Density ◽  
Grain Yield ◽  
Dry Matter ◽  
Nitrogen Accumulation ◽  
Soil N ◽  
Population Densities ◽  
N Accumulation ◽  
Soybean Yield ◽  
Residual Nitrogen ◽  
Residual N

The effect of soybean population density on soybean yield, nitrogen accumulation and residual nitrogen was examined at Camden, N.S.W. (34�S.). In the first experiment, treatments were soybeans (cv. Ransom) at 50, 100, 200 and 400 x 103 plants ha-1; maize (cv. XL66); and a weed-free fallow. Total dry matter yields of tops and grain yields were highest at 200x 103 plants ha-1 (6214 and 3720 kg ha-1, respectively). The yield component most affected by population density was number of branches per plant, with values decreasing with increasing population density. The proportion of unfilled pods was highest at the highest population density. Total nitrogen (N) accumulation in the tops and in the grain was also at a maximum at 200x 103 plants ha-1. The rate of dry matter accumulation declined during pod filling at all population densities. N accumulation continued at high rates throughout the growing season except in the 400x 103 plants ha-1 population. There was a trend for residual dry matter and N in residues to increase with increasing population density. After grain and forage harvest of the first experiment, a crop of wheat (cv. Kite) was sown over the whole area to determine residual N available at anthesis and at maturity (experiment 2). The values of N accumulation in the wheat at maturity were 24 kg N ha-l for the maize treatment, 40-60 kg N ha-l for the soybean treatments and 69 kg N ha-1 for the fallow treatment. Grain yield and grain N followed the pattern of dry matter production and N accumulation at final harvest. The data suggest that soybean depletes soil N to a lesser extent than does maize. For the soybean treatments, there was a trend of increasing residual N at the 3 highest population densities (40-60 kg N ha-1). This was probably a result of an increase in N in leaf fall and in decaying tops and roots at the highest population density. The high value (57 kg N ha-l) at the lowest population density may be due to soybean plants at this density not using as much soil N as the other soybean treatments. No benefit in residual N was gained from planting soybeans at a density beyond the optimum for grain yield when residues were removed by forage harvesting.

scholarly journals Effect of number of seedlings per hill, rate and time of nitrogen application on the growth and yield of late transplant Aman rice

2017 ◽  
Vol 28 (3) ◽  
pp. 174-183
Author(s):  
NAMY Ali ◽  
MAR Sarkar ◽  
SK Sarkar ◽  
SK Paul
Keyword(s):  
Field Experiment ◽  
Plant Height ◽  
Interaction Effect ◽  
Dry Matter ◽  
Growth Parameters ◽  
Management Practice ◽  
Growth And Yield ◽  
Nitrogen Application ◽  
Area Index ◽  
Nitrogen Rates

A field experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh to examine the influence of number seedlings hill-1, rate and time of nitrogen application on the growth parameters of late transplant Aman rice (cv. BR23). The study, laid out in a RCBD with three replications, was comprised of three levels of number of seedlings hill-1 viz. 2, 4 and 6 seedlings hill-1, three nitrogen rates viz. 0, 60 and 120 kg N ha-1 and three levels of time of nitrogen application viz. nitrogen application in two equal splits at 15 DAT and early tillering stage (ET); nitrogen application in three equal splits at 15 DAT, ET and panicle initiation stages (PI); and nitrogen application in four equal splits at 15 DAT, ET, PI and flowering stages (F). The highest plant height (101.04 cm) was found at 80 DAT from 6 seedlings hill-1. 120 kg N ha-1 nitrogen application produced the tallest (104.08 cm) plant and nitrogen application in two equal splits at 15 DAT and ET gave the highest plant height (99.44 cm) at 80 DAT. The maximum number of tillers hill-1 (19.45) at 60 DAT and the highest leaf area index (3.08) at 40 DAT were found in the interaction effect among 6 seedlings hill-1, 120 kg N ha-1 and three times of nitrogen application at 15 DAT, early tillering and panicle initiation stages. The highest shoot dry matter hill-1 (28 g) was obtained as the interaction effect among  6 seedlings hill-1, 120 kg N ha-1 and nitrogen application in four equal splits at 15 DAT, early tillering, panicle initiation and flowering stages. The grain yield, although statistically non-significant, was numerically highest in seedlings hill-1, 120 kg N ha-1 and nitrogen application in three equal splits at 15 DAT, early tillering and panicle initiation stages. Therefore, transplanting with 6 seedlings hill-1 and application of 120 kg N ha-1 in 3-4 equal splits could be a better management practice for ensuring proper growth of the late transplant Aman rice.Progressive Agriculture 28 (3): 174-183, 2017

scholarly journals Residual impact of wellgrow formulation and npk on growth and yield of wheat (Triticum aestivum L.)

2015 ◽  
Vol 44 (1) ◽  
pp. 143-146 ◽  
Author(s):  
VS Meena ◽  
BR Maurya ◽  
RS Meena
Keyword(s):  
Triticum Aestivum ◽  
Grain Yield ◽  
Plant Height ◽  
Dry Matter ◽  
Growth Parameters ◽  
Triticum Aestivum L ◽  
Organic Manure ◽  
Growth And Yield ◽  
Straw Yield ◽  
Matter Production

Effect of concentrate organic manure (wellgrow grain and wellgrow soil) and NPK improved the growth and yield of wheat. Significant improvement in terms of growth parameters like plant height, tillers, dry matter production and productive tillers with application of 120 : 60 : 60 NPK + 300 kg wellgrow soil/ha and at par with application of 120 : 60 : 60 NPK + 300 kg wellgrow grain/ha, treatment receiving 100% NPK + 300 kg wellgrow soil/ha resulted maximum grain yield (4545 kg /ha). Treatment of 100% NPK + 300 kg wellgrow grain/ha maintained higher straw yield (5715 kg/ha) and test weight (44.10 g) due to application of 100 % NPK along with 200 kg wellgrow soil/ha whereas it was at par with application of 75 and 100% NPK with both levels of wellgrow formulation. DOI: http://dx.doi.org/10.3329/bjb.v44i1.22738 Bangladesh J. Bot. 44(1): 143-146, 2015 (March)

scholarly journals Corn response to N applications and population densities at two locations in Puerto Rico

1969 ◽  
Vol 72 (1) ◽  
pp. 127-139
Author(s):  
Adolfo Quiles-Belén ◽  
Antonio Sotomayor-Ríos ◽  
Salvio Torres-Cardona
Keyword(s):  
Puerto Rico ◽  
Population Density ◽  
Grain Yield ◽  
Leaf Area ◽  
Dry Matter ◽  
Agronomic Traits ◽  
Dry Matter Yield ◽  
Population Densities ◽  
Corn Hybrids ◽  
N Rates

The effect of nitrogen applications and population densities on grain and dry matter yield, leaf area and agronomic traits of three commercial corn hybrids was studied at two locations in Puerto Rico. Treatments included sidedressed N at 0, 60, 120, 180, and 240 kg/ha and three population densities of 20,000, 40,000 and 80,000 plants/ha. For most traits, significant differences were found between locations, hybrids, population densitites and N levels, and there were significant interactions of location X hybrids, location X population densities, hybrids X population densities, location X N, hybrids X N and population density X N. Grain yield increased significantly with N rates. Pest results were obtained with 120 kg N/ha and 40,000 plants/ha. Over-all grain yield was higher in Sabana Grande, a drier southern location. Highest grain yield (8,607 kg/ha) was obtained with Pioneer Brand Hybrid 304C with 40,000 plants/ha and 120 kg N/ha. Highest dry matter yield (9,393 kg/ha) was obtained in Isabela, a more humid northern location, with Pioneer Brand Hybrid 5800 at 40,000 plants/ha and 120 kg N/ha. At both locations over-all leaf area was greatest with application of 120 kg N/ha.

scholarly journals Performance of different rice hybrids in Krishna western delta

2020 ◽  
Vol 15 (3) ◽  
pp. 249-251
Author(s):  
K. Anny Mrudhula ◽  
B. Krishna Veni
Keyword(s):  
Field Experiment ◽  
Grain Yield ◽  
Plant Height ◽  
Yield Components ◽  
Growth Parameters ◽  
Block Design ◽  
Research Unit ◽  
Panicle Length ◽  
Straw Yield ◽  
Randomized Block Design

A field experiment was conducted at Rice Research Unit, Bapatla during Kharif, 2013 to observe the performance of hybrids under Krishna Western Delta. The experiment was laid out in Randomized Block Design with four replications. The treatments are 5 rice hybrids like DRRH2, DRRH3, KRH2, PA6201 and CRHR32. The results of study revealed that the hybrids exhibited superiority in respect of different growth parameters like plant height, number of tillers per hill, panicle length grain yield and straw yield. Among various tested rice hybrids, maximum grain yield (6408 kg/ha) and straw yield (7178 kg/ha) were recorded in PA6201 which might be due to better growth parameters and yield components of hybrids.

Relationships between maize yield and growth parameters in a long-term fertilization experiment

2012 ◽  
Vol 60 (3) ◽  
pp. 209-219
Author(s):  
G. Micskei ◽  
T. Árendás ◽  
Z. Berzsenyi
Keyword(s):  
Correlation Analysis ◽  
Grain Yield ◽  
Yield Components ◽  
Dry Matter ◽  
Growth Parameters ◽  
Kernel Weight ◽  
Grain Number ◽  
Thousand Kernel Weight ◽  
Maximum Value

In a long-term maize monoculture experiment set up on the active ingredient equivalence principle, changes in the yield components were investigated over a period of three years (2005–2007) as a function of the fertiliser treatments, and the values of the growth parameters HI, LAI, NAR and CGR were calculated using the classical method of growth analysis.The results indicated that optimum N supplies and the year effect made a substantial contribution both to the grain number per ear and to the thousand-kernel weight. In the course of correlation analysis, both Pearson’s correlation coefficient and multiple regression analysis demonstrated that the grain yield was in close positive correlation with these yield components, and with the maximum value of dry matter production and the harvest index. The two yield components explained 76% of the grain yield, and the effect of thousand-kernel weight was around 3.75 times as great as that of the grain number per ear (β = 0.721 vs. 0.192). On the basis of partial correlation analysis, the maximum value of total dry matter and the thousand-kernel weight were jointly responsible for around 60% of the variance in maize grain yield. Analysis using the “Enter” method showed that the two yield components explained 62% and 59% of the grain yield in wet years (R22005 = 62.3%; R22006 = 58.8%), while in the dry year neither the thousand-kernel weight nor the grain number per ear had a significant effect on the yield (R22007 = 4.5%).

EFFECTS OF ROW SPACING AND POPULATION DENSITY ON GRAIN SORGHUM PRODUCTION IN SOUTHERN ALBERTA

1976 ◽  
Vol 56 (1) ◽  
pp. 31-37 ◽  
Author(s):  
B. R. HEGDE ◽  
D. J. MAJOR ◽  
D. B. WILSON ◽  
K. K. KROGMAN
Keyword(s):  
Population Density ◽  
Grain Yield ◽  
Yield Components ◽  
Growing Season ◽  
Grain Sorghum ◽  
Row Spacing ◽  
Population Densities ◽  
Southern Alberta ◽  
Sorghum Production ◽  
Narrow Row

Row spacings of 18–72 cm and population densities of 75,000 to 346,000 plants/ha had no consistent effect on grain yield of two sorghum hybrids (Pride X4004 and Pride X4053) because of compensating variations within yield components. Grain yield per panicle increased as row spacing increased but this was offset by a decrease in panicles per plant and panicles per square meter. Grain yield per panicle, panicles per plant, and panicles per square meter decreased as population density increased. The choice of row spacing and population density in field production will, therefore, depend on convenience factors related to crop management. Evapotranspiration for the growing season was 179 mm in 1973 and 204 mm in 1974. Highest water use efficiencies occurred at the low population densities and narrow row spacings. There were differences between the two hybrids. Grain yield of Pride X4004 was greater than that of Pride X4053 because the former produced a greater number of seed-bearing tillers. Grain yield differences in Pride X4004 among the three experiments were due to differences in grain yield per panicle.

scholarly journals Seed priming with zinc improves field performance of maize hybrids grown on calcareous chernozem

2021 ◽  
Author(s):  
Gordana Tamindžić ◽  
Maja Ignjatov ◽  
Dragana Milošević ◽  
Zorica Nikolić ◽  
Ljiljana Kostić Kravljanac ◽  
...  
Keyword(s):  
Plant Growth ◽  
Grain Yield ◽  
Plant Height ◽  
Yield Components ◽  
Growth Parameters ◽  
Field Performance ◽  
Seed Priming ◽  
Maize Hybrids ◽  
Zn Concentration ◽  
Grain Zn Concentration

Highlights Seed priming with Zn resulted in an average increase of maize grain yield by about 18% compared to control, and by about 8.4 % compared to water priming. Zn-priming promoted plant growth and increased final plant height of three maize hybrids. Overall experiment plant growth parameters were correlated with grain yield components and grain yield Overall effect of seed priming on grain Zn concentration was significant, but it was increased by Zn-priming in two hybrids. Using the seeds with elevated Zn content can improve overall field performance of maize grown on calcareous chernozem.   Abstract Delivery of micronutrients to plants through seed priming improves seedling vigour and increase crops yields. Two-year filed trial was conducted in Pančevo, Serbia, with aim to study the effect of seed priming with zinc (Zn) on field performance of three maize hybrids on calcareous chernozem deficient in plant available Zn. Seed priming treatments were: control (without priming), water priming and priming with 4 mM zinc sulphate water solution . Seed priming had significant effect on early plant growth, plant height, yield components, grain yield and grain Zn concentration.  Zn-priming promoted plant growth and increased final plant height. Across two growing seasons with contrasting precipitation and three tested maize hybrids, Zn-priming resulted in an average increase of grain yield by about 18% compared to control, and by about 8.4 % compared to water priming. A significant relationship between plant growth parameters, grain yield components and grain yield was detected. Grain Zn concentration was increased by Zn-priming in two hybrids in the season with less precipitation and in one hybrid in the second season.. The results imply that using the seeds with elevated Zn content can improve overall field performance of maize grown on calcareous chernozem.

scholarly journals Growth and yield performance of soybean with the application of Bradyrhyzobium inoculant via furrow and seed

2017 ◽  
Vol 38 (4Supl1) ◽  
pp. 2387
Author(s):  
Santiel Alves Vieira Neto ◽  
Fábio Ribeiro Pires ◽  
João Carlos Madalão ◽  
Douglas Gomes Viana ◽  
Carlos César Evangelista de Menezes ◽  
...  
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Agricultural Production ◽  
Aerial Part ◽  
Dry Matter ◽  
Growth And Yield ◽  
Recommended Dose ◽  
Yield Performance ◽  
Seed Inoculation ◽  
Dry Matter Weight

Given the high costs of agricultural production, especially due to the price of fertilisers, particularly nitrogen, the use of inoculants to supply nitrogen to soybean crops is a widely recommended practice. The objective of this study was to evaluate the feasibility of applying inoculants through seed and planting furrow in soil previously cultivated with soybean and Brazilian native “cerrado” biome soil under greenhouse conditions. Seven treatments were tested: 1) inoculation via seed (inoculant + fungicide + micronutrient), 2) treatment via seed (fungicide + micronutrient), 3) control (only seed), 4) inoculation via furrow-dose 1 (recommended dose), 5) inoculation via furrow-dose 2 (twice the recommended dose), 6) inoculation via furrow-dose 3 (three times the recommended dose) and 7) inoculation via furrow-dose 1 + seed inoculation. We evaluated plant height, fresh and dry matter weight of the aerial part and nodules, number of total, viable and non-viable nodules, number of pods per plant and grain yield. Inoculation was more effective when used in cerrado soil, but soybean performance in treatments without inoculation was higher in previously cultivated soil. Application through furrow proved to be a viable practice due to the similarity of the results obtained with the traditional application by seed.

scholarly journals Initial response of phenology and yield components of wheat (Triticum durum L., CIRNO C2008) under experimental warming field conditions in the Yaqui Valley

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e5064 ◽  
Author(s):  
Jaime Garatuza-Payan ◽  
Leandris Argentel-Martinez ◽  
Enrico A. Yepez ◽  
Tulio Arredondo
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Yield Components ◽  
Triticum Durum ◽  
Canopy Temperature ◽  
Initial Response ◽  
Experimental Warming ◽  
Biological Cycle ◽  
Yaqui Valley ◽  
System Temperature

This work evaluates the experimental warming effects on phenology and grain yield components of wheat in the Yaqui Valley, Sonora, México, using CIRNO C2008 variety from Triticum durum L., as a model during the cropping cycle of 2016–2017 (December to April). Infrared radiators were deployed to induce experimental warming by 2 °C above ambient crop canopy temperature, in a temperature free-air controlled enhancement system. Temperature was controlled by infrared temperature sensors placed in eight plots which covered a circle of r = 1.5 m starting five days after germination until harvest. The warming treatment caused a reduction of phenophases occurrence starting at the stem extension phenophase. Such phenological responses generated a significant biological cycle reduction of 14 days. Despite this delay, CIRNO C2008 completed its biological cycle adequately. However, plant height under the warming treatment was reduced significantly and differences were particularly observed at the final phenophases of the vegetative cycle. Plant height correlated negatively with spikes length, spikes mass, and number of filled grains. Warming also reduced grain yield in 33%. The warming treatment caused a stress intensity (SI = 1-yield warming/yield control) of 39.4% and 33.2% in biomass and grain yield, respectively. The differences in stress intensities between biomass and grain yield were based on plant height reduction. Grain mass was not affected, demonstrating the crop capability for remobilization and adequate distribution of elaborated substances for the spikes under warming conditions.

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