scholarly journals Role of Sowing Time in Maize Production (Review)

2003 ◽  
pp. 36-39 ◽  
Author(s):  
Ferenc Rácz ◽  
Ottó Illés ◽  
István Pók ◽  
Csaba Szőke ◽  
Zsuzsanna Zubori
Keyword(s):  
Genetic Variability ◽  
Sowing Date ◽  
Maize Plant ◽  
Sowing Time ◽  
Maize Production ◽  
Year Effect

Many authors, both in Hungary and abroad, have reported on experiments carried out to determine the role of sowing time in maize, but the results are often contradictory. This is hardly surprising, since the maize plant exhibits enormous genetic variability and the hybrids created through selection and inbreeding may have very specific requirements as to sowing date. The year effect, too, often complicates the efforts of scientists to provide clear guidance to farmers on the optimal sowing date for each hybrid.

Reliability of production of quick to medium maturity maize in areas of variable rainfall in north-east Australia

2008 ◽  
Vol 48 (3) ◽  
pp. 326 ◽  
Author(s):  
C. J. Birch ◽  
K. Stephen ◽  
G. McLean ◽  
A. Doherty ◽  
G. L. Hammer ◽  
...  
Keyword(s):  
Crop Production ◽  
Production Systems ◽  
Sowing Date ◽  
Weather Data ◽  
Potential Yield ◽  
Sowing Time ◽  
Early Maturity ◽  
Maize Production ◽  
North East ◽  
Grain Crop

Maize may assume a more significant role in grain crop production systems in north-east Australia if the probability of producing low yields associated with given amounts of available water can be reduced. Growing hybrids with very early maturity provides a possible way to achieve this. Simulation studies of dryland maize production in areas of highly variable rainfall in north-east Australia were undertaken using long-term weather data input to the APSIM model configured for quick to medium maturity maize. The studies focussed on sowing time options, population density, cultivars, and water availability at sowing. Simulation outputs included predicted mean and median yield, measures of yield variability, and the probability of producing low to very low yield (<2 t/ha). The study showed that optimum sowing date varied with location, and that low populations gave more reliable production, despite some potential yield losses in favourable years. The results of the simulation study provide estimates of yield and thus economic viability of maize production that are interpreted in terms of seasonal variability. They indicate that maize is a viable dryland cropping option provided that cultivar, sowing time and starting water conditions are optimised. Non-optimal conditions of water supply at sowing should be avoided, as greater variability in yield and reduced viability are predicted.

scholarly journals Effect of Sowing Date on Bioactive Compounds and Grain Morphology of Three Pigmented Cereal Species

Agronomy ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 591
Author(s):  
Romina Beleggia ◽  
Donatella B. M. Ficco ◽  
Franca M. Nigro ◽  
Valentina Giovanniello ◽  
Salvatore A. Colecchia ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Durum Wheat ◽  
Bioactive Compounds ◽  
Nutritional Value ◽  
Environmental Influence ◽  
Grain Morphology ◽  
Sowing Date ◽  
Seed Traits ◽  
Sowing Time ◽  
Cereal Species

Recently, the interest in improving the content of bioactive compounds for enhancing the nutritional value of cereal-based products has largely increased, and several strategies, both genetic and agronomic, were proposed. Here, we report the preliminary results of the effect of two sowing periods (winter and spring) on the accumulation of bioactive compounds (i.e., anthocyanins, carotenoids, minerals) and grain morphology in three pigmented cereal species (barley, bread and durum wheat). The results showed that with delayed sowing time, a significant reduction in yield was observed in all species, less in barley (50.4%) than in wheat (70.3% and 66.5% for bread and durum, respectively). On the contrary, the carotenoids accumulation was favored (increased by 12.2%, 15.7% and 27.8% for barley, bread and durum wheat, respectively), as well as those of anthocyanins although strongly dependent on the genotype (i.e., considering only the purple genotypes, the anthocyanins increase by 4.6%, 35.4% and 72.8% in barley, bread and durum wheat, respectively). For minerals compounds, our study highlighted a strong environmental influence even when the pigmented genotypes accumulated more minerals than commercial ones, while the morphometric seed traits were less influenced by this agronomic practice. Therefore, by exploiting the genetic variability for the accumulation of anthocyanins and carotenoids in the grain and by optimizing the sowing time, it could be possible to increase the nutritional value of the final cereal-based products.

Role of genetic variability in the renin-angiotensin system in diabetic and nondiabetic renal disease

2001 ◽  
Vol 21 (6) ◽  
pp. 580-592 ◽  
Author(s):  
Arnold Boonstra ◽  
Dick de Zeeuw ◽  
Paul E. de Jong ◽  
Gerjan Navis
Keyword(s):  
Genetic Variability ◽  
Renal Disease ◽  
Renin Angiotensin System ◽  
Angiotensin System ◽  
Renin Angiotensin

scholarly journals The Species Composition and Seasonal Dynamics of Thrips (Thysanoptera) Populations on Maize (Zea Mays L.) in Southeastern Poland

2011 ◽  
Vol 51 (3) ◽  
pp. 210-216 ◽  
Author(s):  
Halina Kucharczyk ◽  
Paweł Bereś ◽  
Zbigniew Dąbrowski
Keyword(s):  
Zea Mays ◽  
Species Composition ◽  
Seasonal Dynamics ◽  
Food Source ◽  
Zea Mays L ◽  
Maize Plant ◽  
Seasonal Abundance ◽  
Immature Stages ◽  
Thrips Species

The Species Composition and Seasonal Dynamics of Thrips (Thysanoptera) Populations on Maize (Zea MaysL.) in Southeastern PolandThrips species composition and seasonal abundance was studied on maize crops during two seasons (2006-2007), in southeastern Poland. Altogether 21 species have been identified, among themFrankliniella tenuicornis(Uzel 1895) andHaplothrips aculeatus(Fabricius 1803) which are a graminicolous species and were eudominants, comprising 96.8% in 2006 and 82.0% in 2007 of all collected specimens. Other species occurred only in low numbers. The frequent and numerous presence ofF. tenuicornisspecies in their immature stages in the samples, confirmed the role of the maize plant as the host.H. aculeatusprobably chose maize as a food source and substitute plant for breeding.

scholarly journals Genetic Variability of Maize (Zea mays L.) Genotypes on Some Yield and Yield Components at Haramaya, Eastern Ethiopia

2020 ◽  
Vol 8 (9) ◽  
pp. 1840-1845
Author(s):  
Mekuannet Belay Kebede ◽  
Degefa Gebissa
Keyword(s):  
Zea Mays ◽  
Genetic Variability ◽  
Zea Mays L ◽  
Genotype 1 ◽  
Eastern Ethiopia ◽  
Maize Production ◽  
Maize Genotypes ◽  
Coefficients Of Variation ◽  
Study Results ◽  
Almost All

Genetic improvement in components of economic importance along with maintaining a sufficient amount of variability is always the desired objective in the any maize (Zea mays L.) breeding program which will be handled under the conditions of Haramaya, Eastern Ethiopia. Therefore, an experiment was conducted using (27) and (3) check/control varieties to determine the genetic variability of maize genotypes at Haramaya, eastern Ethiopia. The study results revealed that significantly the tallest plant heights for (PH) were recorded from (3) (170 cm) and (18) (167.5 cm) genotypes whereas the shortest PH were recorded from (13) (117.5 cm) and (23) genotypes (120 cm). Good plant aspects (PA) were obtained from genotype 12, 22 and 26 (PA-1.5) and poor PA were attained from genotype 1 (PA-2.5). Besides, genetic and phenotypic variances were estimated for seven components. The highest genotypic coefficients variation (GCV) and phenotypic coefficients of variation (PCV) were calculated from grain yield (GY – 23.39%). Comparatively the higher GY were attained from the genotypes of 3, 9 and 12. It can be concluded that almost all components of the PCV are greater than the GCV. Superior selected genotypes are recommended to the researchers /breeders to develop disease resistant and high yielder varieties to increase maize production by farmers under Haramaya and other similar agroecologies.

scholarly journals Response of Late Sowing on the Yield and Yield Contributing Character of Different Varieties of Mustard and Rapeseed in Coastal Area of Barguna

1970 ◽  
Vol 42 (4) ◽  
pp. 441-448
Author(s):  
MA Razzaque ◽  
MR Talukder ◽  
Shaleh Uddin ◽  
SI Khan ◽  
Altab Hossain
Keyword(s):  
Coastal Area ◽  
Brassica Species ◽  
Sowing Date ◽  
Rabi Season ◽  
Sowing Time ◽  
Sowing Dates ◽  
Main Plot ◽  
Testing Site ◽  
Late Sowing ◽  
Plot Design

An experiment was carried at Multi Location Testing site Barguna to determine suitable variety of mustard (Brassica species) for the late sowing condition for the coastal area of Bangladesh during rabi season of 1998-1999 and 1999-2000. Four varieties of mustard such as Daulat, Rai-5, Improved tory-7, and Ishurdi local with four sowing dates viz.15 Nov, 23 Nov, 30 Nov. and 7 Dec. were used for the experiment. The experiment was laid out in a split plot design with sowing date in the main plot and varieties in the sub plot. The results revealed that the variety Daulat (1035 kg/ha) and Ishurdi local (1014 kg/ha) produced identically superior yield irrespective of sowing time. 15 November (1164 kg/ha) and 23 November (1002 kg/ha) recorded identically superior yield irrespect of variety. Daulat and Ishurdi local variety sowing could be delayed up to 30 November to obtain a profitable yield of (872 kg/ha) and (940 kg/ha) respectively which was still economically profitable. Key words: Mustard and rapes, Late sowing , variety, Yield, coastal area. Bangladesh J. Sci. Ind. Res. 42(4), 441-448., 2007

scholarly journals Study on the Morpho-physiological Character of Four Quality Protein of Maize (Corn)

2017 ◽  
Vol 10 (1) ◽  
pp. 117-124
Author(s):  
SK Mondal ◽  
MM Rahman
Keyword(s):  
Grain Yield ◽  
Sowing Date ◽  
Weight Percent ◽  
Leaf Sheath ◽  
Sowing Time ◽  
Planting Time ◽  
Physiological Character ◽  
Physiological Variability ◽  
Sowing Dates ◽  
Number Of Leaves

The experiment was conducted to find out the morpho-physiological variability in response to different sowing dates in four lines of Quality Protein Maize (QPM) in in the Field Laboratory of the Department of Crop Botany, Bangladesh Agricultural University, Mymensingh. The study was carried out with four lines of maize and two sowing dates, 15 November (T1) and 15 December, ((T2). Sowing date differed significantly in plant height, length of leaf blade, length of leaf sheath, leaf breadth, cob length, cob diameter, length of tassel, days to 50% tasselling, days to 50 % silking, days to maturity, number of cobs per plant, cob weight, number of grain per cob. 1000-seed weight, percent underdeveloped cob, total dry matter and grain yield, but did not differ in number of leaves and protein percent. The lines differed significantly among themselves in those characters except number of leaves per plant, length of leaf sheath, cob length, cob diameter, days to 50% tasselling, number of cobs per plants and number of grain per cob. The line Across 8666 (V2) and (V3) gave the highest grain yield 4.57 and 4.55 and the lowest from (V4) lines 4.41 tons per hectare. The 15 November sowing time (T1) gave the highest grain yield 4.86 tons per hectare. In case of interaction, the earlier planting time (T1) showed better performance with all lines. On the other hand, the highest yield was found from combination of line V2 and V3 with earlier planting time (T1).J. Environ. Sci. & Natural Resources, 10(1): 117-124 2017

Impact of nutrient supply, sowing time and plant density on maize yields

2005 ◽  
Vol 53 (1) ◽  
pp. 59-70 ◽  
Author(s):  
M. Sárvári
Keyword(s):  
Moisture Content ◽  
Plant Density ◽  
Sowing Date ◽  
Nutrient Supply ◽  
Yield Stability ◽  
Sowing Time ◽  
Npk Fertilizers ◽  
Chilling Resistance ◽  
Grain Moisture ◽  
Plant Densities

In order to enhance the adaptability and yield stability of maize, the effect of nutrient supply and plant density on yield was studied on a calcareous chernozem soil in Debrecen, while the relationship between sowing date and the grain moisture content at harvest was investigated on a typical meadow soil in Hajdúböszörmény. In the plant density experiment, the plant densities applied were 45, 60, 75 and 90 thousand plants/ha. The optimal fertilizer rates for the maize hybrids were: N 40-120, P2O5 25-75, K2O 30-90 kg ha-1. The application of NPK fertilizers in a wet year increased the yield by 40-50%. Hybrids with good chilling resistance at germination can be sown as early as 10 April, when the soil temperature reaches 8-10°C. There was a significant correlation between sowing date and the grain moisture content at harvest. When hybrids with good chilling resistance at germination were sown early, the grain moisture content at harvest was reduced by 5-10%. A plant density higher than the optimum reduces yield and yield stability. The optimal plant densities determined in the experiment were 60, 75 and 90 thousand plants/ha for two, three and one hybrid, respectively.

Sign in / Sign up

Export Citation Format

Share Document