Sowing Dates of Wheat in Northern Sudan

1977 ◽  
Vol 13 (4) ◽  
pp. 401-407 ◽  
Author(s):  
A. Galil ◽  
A. Gabar Ahmed
Keyword(s):  
Grain Yield ◽  
Yield Components ◽  
Unit Area ◽  
Sowing Date ◽  
Grain Weight ◽  
Sowing Time ◽  
Varietal Differences ◽  
Planting Time ◽  
Sowing Dates

SUMMARYThe effect of sowing time and variety were tested for three consecutive years under irrigated conditions. The relation between yield and planting time was quadratic, best described by y=a+bx-ex2 where y is grain yield and x is planting time. The results showed that, irrespective of variety, the optimum sowing date is around mid-November. Varietal differences are related to number of ears per unit area, with a stronger association of yield with grain weight than with any other yield components.

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

scholarly journals Wheat varieties productivity at different sowing dates

2020 ◽  
Vol 26 (2) ◽  
pp. 61-68
Author(s):  
Milica Veliborović ◽  
Ljubiša Kolarić ◽  
Ljubiša Živanović ◽  
Jela Ikanović
Keyword(s):  
Yield Components ◽  
Wheat Yield ◽  
Sowing Date ◽  
Grain Weight ◽  
High Yield ◽  
Sowing Time ◽  
Wheat Varieties ◽  
Sowing Dates ◽  
Two Factors ◽  
Set Up

The aim of this research is to study two important factors in wheat production (Triticum sp.) - sowing time and variety, specifically their influence on wheat yield and yield components: the number of grains per spike, grain weight per spike, 1,000-grain weight, and the hectoliter weight. The influence of sowing time and variety were determined based on the obtained data, which indicated the extent to which the significance of these factors manifest on certain components and wheat yield. The optimal sowing date is October 5th-25th. The variety itself cannot give a high yield without the application of all agrotechnical measures, to which we strive for primarily due to the high wheat importance. The experiment set up by the split-plot method in three replications examined three wheat varieties: Gabrio, Rapsodija and Basmati sown in two sowing dates: October 29th and November 25th. The results showed that all yield components (the number of grains per spike, the grain weight per spike, the 1,000 - grain weight, and the hectoliter weight) had the highest values in Rapsodija variety and were more dependent on the variety than to sowing time. The influence of the variety on the hectoliter mass was at a significant level. Wheat yield depended more on sowing time, and the influence of sowing time, variety, and interaction of these two factors on yield were statistically significant. The highest yield was registered in Gabrio variety (8.87 t ha-1), while the average yield achieved by this micro experiment was 8.46 t ha-1.

Effects of different sowing times on leaf scald and yield components of spring barley under dryland conditions

2004 ◽  
Vol 55 (2) ◽  
pp. 147 ◽  
Author(s):  
Hamit Kavak
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Yield Components ◽  
Spring Barley ◽  
Sowing Date ◽  
Sowing Time ◽  
The Third ◽  
Sowing Dates ◽  
Yield And Yield Components ◽  
And Control

The effect of sowing date on severity of scald and yield components of barley was studied over 2 years, using 15-day intervals between sowing dates under dryland conditions in Turkey. Disease severity was greatest at the first sowing time, and it decreased linearly at subsequent sowing times in both years. Disease did not develop on flag and second leaves for the third sowing date, and was not observed on any leaf after the fourth and fifth dates of sowing in 2000 and 2001, respectively. After the third sowing date, a decrease in total grain yield and yield components, number of ears per plant, grains per head, and plant height was observed in both infected and control plots. Yield was also reduced by scald and resulted in total grain yield reductions of 10.1% and 6.0% for the first and second sowing dates in 2000, and 16.2%, 9.2%, and 3.0% on the first 3 sowing dates in 2001, respectively. At the first 2 sowing dates only ears per plant was decreased by scald, with respective reductions of 8.3% and 4.4% in 2000, and 14.3% and 8.5% in 2001, when compared with the control plots.

scholarly journals Morphological characters, plant phenology and yield of spring barley (Hordeum sativum L.) depending on cultivar properties and sowing date

2012 ◽  
Vol 65 (2) ◽  
pp. 171-176 ◽  
Author(s):  
Kazimierz Noworolnik
Keyword(s):  
Grain Yield ◽  
Unit Area ◽  
Spring Barley ◽  
Sowing Date ◽  
Morphological Characters ◽  
Grain Weight ◽  
Growth Stages ◽  
Barley Cultivars ◽  
State Research Institute ◽  
1000 Grain Weight

During the period 2008-2010, microplot experiments on spring barley were carried out in the experimental field of the Institute of Soil Science and Plant Cultivation – State Research Institute in Puławy, on a good wheat soil complex. The following cultivars were compared: ‘Conchita’, ‘Kormoran’, ‘Rufus’, ‘Skald’, ‘Skarb’ (2008-2009) as well as ‘Afrodite’, ‘Aliciana’, ‘Bordo’, ‘Skald’, and ‘Suweren’ (2009-2010), in terms of their morphological characters determining grain yield and their response to sowing date: 7-12 April and 17-22 April. Among the spring barley cultivars tested, there were large differences in productive tillering of plants, number of ears per unit area, and grain yield. Smaller differences related to number of grains per ear and 1000 grain weight. The cultivars ‘Suweren’ and ‘Skarb’ were characterized by high grain yield thanks to greater plant tillering and higher number of ears. The cultivar ‘Bordo’ was marked by the highest number of grains per ear, while cv. ‘Kormoran’ had the highest 1000 grain weight. A delayed sowing date caused a shortening of the growing season by 8-9 days and a shortening of all plant growth stages. This negatively affected number of ears per unit area and grain yield, but did not result in significant changes in number of grains per ear and 1000 grain weight. ‘Suweren’ and ‘Skarb’, i.e. cultivars with higher tillering ability, can be considered to be cultivars more tolerant to delayed sowing date.

scholarly journals Effect of Sowing Dates and Varities on Yield and Yield Attributes of Direct Seeded Rice in Chitwan Condition

2013 ◽  
Vol 14 ◽  
pp. 121-130
Author(s):  
KP Dawadi ◽  
NK Chaudhary
Keyword(s):  
Grain Yield ◽  
Sowing Date ◽  
Growth And Yield ◽  
Sowing Time ◽  
Early Maturity ◽  
Yield Attributes ◽  
Net Return ◽  
Sowing Dates ◽  
Direct Seeded ◽  
Use Efficiency

Rice transplanting and sowing time sometimes get delayed due to lack of assured irrigation or surplus of rainfall. Moreover, no specific varieties have been specifically developed for this purpose. An experiment was conducted to study the effect of sowing dates and varieties on growth and yield of direct seeded rice during rainy season in 2010. The experiment was laid out in split plot design with four sowing dates and three varieties in sub plot. Sowing date on June 13th contributed to higher grain yield; higher gross return; net return and higher B:C ratio per hectare. Similarly, the variety Hardinath-1 excelled better in all these parameters with early maturity. The interaction effect of Hardinath-1 with June 13 sowing took lower days for maturity; produced higher number of effective tillers (386.3); heat use efficiency (2.14); straw yield (7.43 t ha-1); and relatively higher grain yield (4.22 t ha-1); gross return (Rs.108.55 thousand); net return (Rs. 51.22 thousands) and B:C ratio (1.89). Therefore, variety Hardinath-1 with June 13 sowing is best suited to get higher yield, timely maturity and higher economic return in Chitwan conditions.

scholarly journals Thermal and radiation effect studies of different wheat varieties in Chhattisgarh plains zone under rice-wheat cropping system

MAUSAM ◽  
2021 ◽  
Vol 67 (3) ◽  
pp. 677-682
Author(s):  
J. L. CHAUDHARY ◽  
S. R. PATEL ◽  
N. MANIKANDAN ◽  
RAJESH KHAVSE ◽  
P. K. VERMA
Keyword(s):  
Grain Yield ◽  
Block Design ◽  
Wheat Variety ◽  
Cropping System ◽  
Sowing Date ◽  
Wheat Crop ◽  
Sowing Time ◽  
Wheat Varieties ◽  
Randomized Block Design ◽  
Sowing Dates

Field experiment was conducted during Rabi seasons of 2010-11, 2011-12 and 2012-13 at Research and Instructional Farm of Indira Gandhi Krishi Vishwavidyalaya, Raipur to examine and study the phenology, accumulation of growing degree days (GDD), heliothermal units (HTU), photothermal unit (PTU) and performance of wheat (Triticum aestivam L.) of four wheat varieties grown under five different sowing dates in factorial Randomized Block Design. It was observed that GDDs got reduced significantly with subsequent delay in sowing time. For our study purpose and as per package of practices, 25 November D1 can be taken as early sowing and D2 - 5 December as timely sowing conditions.  The wheat varieties Amar and Sujata took highest GDD, HTU and PTU to maturity.  On the mean basis the variety Kanchan produced highest grain yield (3147 kg/ha) followed by GW-273 (2947 kg/ha).  The significant reduction in grain yield was recorded when sowing was delayed beyond D2 - December 05.  Among the wheat varieties Kanchan showed better performance in terms of RUE followed by GW-273 and Sujata. Highest HUE was observed in wheat variety Kanchan followed by Sujata and GW-273. Varieties giving higher yield, RUE and HUE are identified under varying growing environments so as to suggest the appropriate sowing dates of wheat varieties in Chhattisgarh plains. GDD is giving consistent results as its variability is least varying between 3.4-5.3 per cent for different varieties and therefore it is reliable index for studying environmental effects on wheat in this region. Lowest RUE was observed under 5 January sowing (D5) in the all varieties which leads to conclusion that this sowing date must be avoided and wheat crop sowing must be completed latest by 25 December to avoid adverse effects on productivity.       

scholarly journals Estimation of Temperature Co-Efficient of Wheat for Adjusting Proper Sowing Time

2021 ◽  
Vol 23 (2) ◽  
pp. 69-80
Author(s):  
AA Begum ◽  
MAK Mian ◽  
J Rahman ◽  
MM Khanum ◽  
MZ Ali ◽  
...  
Keyword(s):  
Grain Yield ◽  
Air Temperature ◽  
Great Influence ◽  
Sowing Date ◽  
Research Field ◽  
Effect Of Temperature ◽  
Sowing Time ◽  
Physiological Maturity ◽  
Sowing Dates ◽  
Late Sowing

The field experiment was conducted at Agronomy research field, Joydebpur, Gazipur (Latitude: 23.999941, Longitude: 90.420273), RARS, Jamalpur (Latitude: 24.923025, Longitude: 89.950111) and ARS, Rajbari, Dinajpur (Latitude: 25.63544, Longitude: 88.65144) of BARI during rabi of 2018 – 2019 to observe the growth behavior and yield of wheat as influenced by prevailing air temperature based on sowing time. There were five sowing dates viz., D1 = 10 November, D2 =20 November, D3 = 30 November, D4=10 December and D5=20 December. Sowing date showed great influence on TDM production, LAI, physiological maturity, yield and yield components of wheat. 30 November sowing produced the maximum TDM and LAI followed by 20 November sowing. These parameters finally contributed to higher grain yield than earlier and later sowing date. The crop sown on 30 November took the longest period (105, 106 and 109 days, respectively) to attain the physiological maturity with the highest GDD (1639, 1638 and 1640  respectively) and 20 December sown crop took the shortest period (95 , 96  and 98 days  respectively) to attain the physiological maturity with the lowest GDD (1530, 1528 and 1525 at Joydebpur, Jamalpur and Rajbari, respectively).It was also found that 30 November sown crop produced the higher grain yield (4.90 t ha-1, 4.99 t ha-1 and 5.03 t ha-1 at Joydebpur, Jamalpur and Rajbari, respectively).The results revealed that 20-30 November sowing produced higher grain yield might be due to favourable air temperature for growth and development. Late sowing after November 30 produced lower grain yield due to high temperature prevailed at the later growth stage (March) of wheat at Joydebpur, Jamalpur and Rajbari region. The temperature co-efficient of wheat was estimated at 2.41 t ha-1 (1.95-2.89 t ha-1) indicated grain yield reduced 2.41 t ha-1 per 1°C increased of air temperature and effect of temperature on the grain yield of wheat was estimated at 81-84%. Bangladesh Agron. J. 2020, 23(2): 69-80

scholarly journals Effect of Sowing Dates on Yield and Yield Components of Some Selected Chickpea (Cicer arietinum L.) Varieties

2021 ◽  
pp. 9-15
Author(s):  
Adinew Getachew ◽  
Thomas Abraham
Keyword(s):  
Grain Yield ◽  
Yield Components ◽  
Agricultural Practices ◽  
Sowing Date ◽  
Cropping Season ◽  
Sowing Dates ◽  
Yield And Yield Components ◽  
Biological Yield ◽  
High Yielding Varieties ◽  
Main Effects

Most suitable sowing date and high yielding varieties are the primary agricultural practices to enhance production and productivity of chickpea. Hence, a field experiment was carried out to evaluate the effect of sowing dates on yield and yield components of chickpea varieties in the main cropping season of 2019 at Toke Kutaye, Ethiopia. Treatments consisted of four sowing dates (September 4th, September 14th, September 24th, and October 5th) and four kabuli varieties of chickpea; namely Dube (standard check), Dalota, Teji and Ejere. The experiment was laid out in split plot design using factorial arrangement with three replications where sowing date treatments were assigned to the main plots and varieties to sub plots. Dalota variety produced the highest number of pods (79.7) per plant. the main effects of sowing date and varieties were significantly different on biological yield. Highest biological yield (3776.9 kg ha-1 and 3761 kg ha-1) were recorded from September 24th and September 14th sown plots, respectively. Among varieties tested, the highest biological yield (3723.8 kg ha-1) was obtained from local variety. Highest grain yield (2415.4 kg ha-1) was recorded from plots sown on September 14th whereas Dalota variety produced highest grain yield (2051.25 kg ha-1). In case of harvest index, highest (67.9% and 59.6%) was recorded from September 14th sown plots and Dalota variety, respectively. Therefore, Dalota variety and September 14th sowing date emerged as best among all tested treatments and could be recommended for chickpea production in the study area.

scholarly journals Response of Wet Seeded Rice Varieties to Sowing Dates

1970 ◽  
Vol 6 ◽  
pp. 39-48
Author(s):  
Mishri L Shah ◽  
Kailash P Bhurer
Keyword(s):  
Grain Yield ◽  
Interaction Effect ◽  
Yield Components ◽  
Grain Weight ◽  
Research Station ◽  
Rice Varieties ◽  
Research Journal ◽  
Sowing Dates ◽  
Second Year ◽  
Percent Decrease

The experiment was conducted at Regional Agriculture Research Station, Parwanipur in twoconsecutive years to find out the suitable rice varieties for wet seeding conditions in relation tosowing dates. Yield components like tillers number/m2, number of filled grains/panicle and1000-grain weight were found in the decreasing trend from the seeding of 15 of June onward.The percent decrease in the grain yield was 14.1, 31.8 and 50.6 in 1998/99 where as 4.8, 7.9 and49.6 in 1999/00 on June 29 to July 14 seeding dates respectively as compared to 15 June seedingdate. Radha 4 in the first and Chaite 2 in the second year recorded the highest grain yield of3757 and 4197 kg/ha respectively. Interaction effect of the sowing dates and varieties washighly significant. Radha 4 produced the highest grain yield of 5039 kg/ha in 1998/99 where asRadha 4 and Chaite 6 were found at par in 1999/2000 seeded on 15 June. Radha 4 was the bestvariety for wet seeded conditions when seeded on 15 June. Chaite 2 had been observed goodyielder in all seeding dates among the tested varieties.Key words: Grain yield; seeding dates; wet seeding riceDOI: 10.3126/narj.v6i0.3342Nepal Agriculture Research Journal Vol.6 2005 pp.35-38

scholarly journals Influence of Sowing Time on Yield and Yield Components of Spring Rapeseed in Lithuania

Agronomy ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 2170
Author(s):  
Lina Marija Butkevičienė ◽  
Zita Kriaučiūnienė ◽  
Rita Pupalienė ◽  
Rimantas Velička ◽  
Silvija Kosteckienė ◽  
...  
Keyword(s):  
Yield Components ◽  
Seed Weight ◽  
Sowing Date ◽  
Meteorological Conditions ◽  
Sowing Time ◽  
Similar Time ◽  
Experimental Station ◽  
Sowing Dates ◽  
Seed Yields ◽  
Number Of Seeds

Sowing time, as an element, is important to improving the adaptation of cultivars to environmental conditions and to achieving high seed yields. The field experiment was conducted from 2018–2019 at the Experimental Station of Vytautas Magnus University Agriculture Academy. The experimental design included treatments with different sowing dates: eight sowing dates in 2018 and 10 sowing dates in 2019. The first sowing of spring rapeseed was carried out when the soil reached its physical maturity, i.e., it did not stick to agricultural implements and it crumbled well. The other sowing dates were every seven subsequent days. From 2018–2019, the rapeseed emerged as best in early May (3 and 4 May), and later sowing reduced the emergence of rapeseed. In 2018, most pods were formed on one plant when the rapeseed was sown (on 1 June), compared to other sowings, on average 2.8 times more. In 2019, most pods were formed by the latest-sown rapeseed (7 June), from 1.4 to 2.7 times more compared to previously sown crops. In 2018, the sowing time of spring rapeseed did not have a significant effect on the number of seeds in one pod. In 2019, it was found that the rapeseed formed most of the seeds in the pod at a similar time as in 2018: the sowings of 19 April and 7 June. The average number of seeds in the pod was significantly reduced by early sowing (5 April). In 2019, the highest 1000-seed weight was found at the earliest-sown crop (5 April), which was on average 18.0% higher compared to the later sowings. The 1000-seed weight of the last-sown rapeseed (7 June) was the lowest. In 2018, the yields of early-sown (20 April) spring rapeseed were the highest. Later sowing significantly reduced the yields by 20.7 to 48.2%. In 2019, the highest seed yield was obtained after sowing spring rapeseed in late April (26 April); it was significant, on average, 1.9 times higher than the yields of spring rapeseed sown from 3 May to 7 June. Meteorological conditions had a stronger effect on the field emergence and yield components of spring rapeseed than the sowing date.

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