Effect Of Different Sowing Dates Research Articles

Growth Analysis of Coriander (Coriandrum sativum L.) as Influenced by Different Sowing Dates and Planting Geometry in Chhattisgarh Plains Zone

An experiment was conducted to assess the effect of different sowing dates and planting geometry on coriander during the winter seasons of 2020-21 and 2021-22 at Instructional farm, College of Agriculture and Research Station, IGKV, Raigarh, Chhattisgarh. The experiment was laid out in split-plot design, comprised of four date of sowing viz., D1: 25th October, D2: 10th November, D3: 25th November and D4: 10th December as main plot and four planting geometries viz., S1: 30 x 5 cm, S2: 30 x 7.5 cm, S3: 30 x 10 cm and S4: 30 x 12.5 cm as sub-plot, and replicated trice. Influence of above treatments on crop was studied regarding growth parameters of coriander and analyzed statistically. The result showed that the crop sown on 25th October recorded significantly higher growth parameters viz., plant height, number of branches, dry matter accumulation, crop growth rate and relative growth rate. Among planting geometry, sowing of coriander at 30 x 12.5 cm spacing produced significantly taller plants, higher number of branches plant-1, dry matter accumulation plant-1, crop growth rate and relative growth rate. Coriander sown on 25th October interacted with the 30 x 12.5 cm spacing and registered significantly higher dry matter accumulation.

Cotton yield responses to climate change and adaptability of sowing date simulated by AquaCrop model

The feedback mechanism of cotton yield to climate change is important knowledge for cotton planting planning and stable production. However, the impact of sowing date on cotton yield in China's main cotton producing areas under future climate change is still unclear. To deal with it, this study first evaluated the applicability of the AquaCrop model using actual observed cotton growth and yield data. Then, based on the 27 Global Climate Models (GCMs) multi-model ensemble data in the Sixth Coupled Model Intercomparison Project (CMIP6), the future climate changes in China 's main cotton producing areas from 2021 and 2060 (2040 s) and 2061–2100 (2080 s) under two typical Shared Socioeconomic Pathways (SSP) 2–4.5 and SSP5–8.5 were predicted. Finally, the effects of different sowing dates on cotton yield under SSP2–4.5 and SSP5–8.5 scenarios were simulated. The results showed that: (1) AquaCrop model had good applicability and it could accurately simulate cotton growth and yield. (2) The temperature under the SSP2–4.5 and SSP5–8.5 scenarios increased significantly compared with the baseline period (1985–2020). Precipitation during the cotton growth period mainly showed an increasing trend, but the spatial and temporal variability was large. The reference crop evapotranspiration (ETo) during the cotton growth period mainly showed a decreasing trend under the SSP2–4.5 (2040 s) scenario, while it mainly showed an increasing trend in other future periods. (3) The cotton yield under the SSP2–4.5 and SSP5–8.5 scenarios increased by an average of 10.51% and 13.67%, 14.76% and 28.04% in 2040 s and 2080 s compared to the baseline period (1981–2015), respectively. (4) Early sowing was beneficial to increase cotton yield, cotton yield sown on March 31 increased by an average of 5.32% compared to May 10. In conclusion, future climate change will have positive impacts on cotton production in China, and early sowing is an effective adaptation measure to cope with climate change.

Effects of sowing date on photosynthetic characteristics, chlorophyll fluorescence and yield of different Echium plantagineum L. cultivars

The seed oil of Echium plantagineum L. is rich in unsaturated fatty acids. With the gradual development of the value of echium oil in food, medical care and cosmetics, the corresponding market demand has also increased. The selection of suitable cultivars and the increase of yield per unit area has also become one of the main objectives of current breeding and cultivation of E. plantagineum. To effectively use the local photothermal resources, to improve the use of light energy by E. plantagineum, and to enhance the growth and yield of E. plantagineum. E. plantagineum cultivars Blue Bedder and Mixed Bedding were used as research subjects to study the effects of different sowing dates (1 May, 8 May, 15 May, 22 May and 29 May) on the photosynthetic characteristics and yield of E. plantagineum. Under the same cultivar conditions, with the delay in sowing date, the leaf chlorophyll content (SPAD), photosynthetic rate (Pn), transpiration rate (Tr), stomatal limitation value (Ls), photochemical quenching (qP), electron transfer rate (ETR), actual photochemical efficiency (ΦpsII) and yield of Blue Bedder decreased and reached a maximum at T1, while the SPAD, Pn, Tr, water use efficiency (WUE), Ls, initial fluorescence (Fo), maximum fluorescence (Fm), qP, ETR, ΦpsII and yield of Mixed Bedding reached the maximum at T4. Blue Bedder should be sown early at T1 and Mixed Bedding late at T4 during planting, which will help to improve the photosynthetic characteristics and grain yield of E. plantagineum.

Effect of Different Sowing Dates and Various Varieties on Seedling Growth of Late Kharif Onion (Allium cepa L.) in Assam

Experiments were conducted on sandy loam soil of Horticulture Experimental Farm, Department of Horticulture, College of Agriculture, Assam Agricultural University, Jorhat, Assam during 2020-21 and 2021-22. The experiment was conducted on “The effect of different sowing dates and various varieties on seedling growth of late kharif onion (Allium cepa L.) in Assam.” Fifteen treatment combinations comprising of five onion varieties viz., Arka Kalyan, Bhima Dark Red, Agrifound Dark Red, Bhima Super and Bhima Red and three dates of sowing viz., 25th August, 5th September and 15th September were tested in Factorial Randomized Block Design (FRBD) with three replications. At the nursery stage, on the basis of pooled data, the relationship of different growth characters with various varieties and different dates of sowing revealed that variety Bhima Super sowing on 25th August (D1V4) was the best in the number of leaves (3.77), fresh weight of seedling (344.16 mg) and dry weight of seedlings (58.85 mg) at 40 days of sowing. Number of leaves per plant 25, 30 and 35 days after sowing were not affected by combination of various varieties and different dates of sowing.

Effect of different sowing dates on crop phenology and seed yield attributes in Indian mustard genotypes

Effect of different sowing dates on crop phenology and seed yield attributes in Indian mustard genotypes

Effect of Irrigation Level and Sowing Date on Yield of Field Bean in Saline Soils of Konkan Region of Maharashtra

A field experiment was conducted during consecutive Rabi seasons of 2019-2020 and 2020-2021 in coastal saline soils at Khar Land Research Station, Panvel, Maharashtra, India to study the effect of different sowing dates and irrigation levels on the production potential of field bean. The experiment was laid out in factorial randomized block design (FRBD) with four replications, comprising three dates of sowing viz., immediately after harvest of paddy (D1), 10 days after harvest of paddy (D2), and 20 days after harvest of paddy (D3); and three irrigation levels viz., no irrigation (I0), one irrigation at flowering (I1), and one irrigation each at flowering and at pod formation (I2). The results showed that the treatment D1 recorded significantly higher seed yield of field bean (915 kg.ha-1) over D2 (713 kg.ha-1) and D3 (605 kg.ha-1). Among the irrigation levels, treatment I1 resulted in significantly higher seed yield of field bean (856 kg.ha-1) over I2 (726 kg.ha-1) and I0 (650 kg.ha-1). The treatment combination I1D1 produced significantly higher seed yield of field bean (1065 kg.ha-1) with higher net realization (1,06,500 ₹.ha-1), net income (55,222 ₹.ha-1) and benefit cost ratio (2.08). Both sowing date and irrigation level played important role in management of root zone soil moisture and soil salinity which influenced the seed yield. Sowing of field bean immediately after the harvest of paddy and providing one irrigation at the time of flowering is recommended to obtain better yield and returns from the field beans cultivated in Konkan region of Maharashtra.

Effect of Different sowing dates under Intercropping Patterns for Fahl Berseem and Wheat Crop Under the North Middle Nile Delta Region

Effect of Different sowing dates under Intercropping Patterns for Fahl Berseem and Wheat Crop Under the North Middle Nile Delta Region

Effect of Different Weather Relationship in Barley (Hordeum vulgare L.) in Different Sowing Dates and Varieties in Prayagraj Conditions

A field experiment entited “Effect of different sowing dates and varieties on growth and yield of barley (Hordeum vulgare L.) Under Prayagraj conditions” was conducted during the Rabi season of 2021-2022. The experiment was set at forestry field of Sam Higginbottom University of Agriculture Technology and Science Prayagraj U.P.  The experiment was laid out Factorial RBD with three replications having two factors. First factor comprised of three dates of sowing 15oct. 30 Oct. and 15 Nov. whereas second factor consist of three Barley varieties viz; Parth, SHB832, and RD 2052 Crop sown on 15th November recorded higher seed yield as compared to 30th October and 15th October sowing. In cases plant growth parameters of Barley maximum was recorded under 15th November as compared to 30th October and 15th October and in case of varieties maximum growth, plant height, no of tillers per plant, dry weight of per plant, length of spike, grain spike per plant, test weight, grain yield, straw yield, was recorded with 15th nov RD 2052 variety as compared to 15th Oct. Parth and 30th Oct. SHB 832. 15th November sowing with RD 2052 variety proved the most remunerative and economically feasible for cultivation of Barley under the agro climatic conditions of Prayagraj UP.

Effect of Different Sowing Dates and Varieties on Mustard Growth and Yield in Prayagraj Conditions

A field experiment was conducted during the winter seasons of 2021-22 at the Research farm of the college of forestry Sam Higginbottom University of Agriculture Technology and Science Prayagraj (U. P) to investigate the effect of different sowing dates and varieties on Mustard growth and yield in Prayagraj conditions Keeping in this view experiment was conducted in Factorial RBD with three replications having two factors.  First factor comprised of three dates of sowing 15Oct. 30Oct. and 15Nov. whereas the second factor consists of three Indian mustard varieties viz; Maharaja Mustard, Md Rani Supergold, Kala Sona, Crop sown on 15th November was recorded statistically significant higher seed yield, stover yield, test weight, harvest index and at maturity best consumption of heat units like gdd, htu and ptu as compared to 30th October and 15th October sowing. In the case of plant growth parameters of mustard, maximum was recorded under 15th November as compared to 30th October and 15th October and in case of varieties maximum plant growth like plant height, no of leaves no of branches, no of silique, and optimum use of heat units was recorded with md rani super gold as compared to kala sona and maharaja. The treatment with the date of sowing 15th November and md rani super gold variety proved the most remunerative and economically feasible for the cultivation of Indian mustard under the agro-climatic conditions of Prayagraj U.P.

EFFECT OF PLANTING DATES ON GROWTH PERFORMANCE AND FLOWER QUALITY OF GLADIOLUS IN PAKISTAN

Gladiolus is one of the leading bulbous flowers due to the high demand of its double row spikes of different colors in domestic and international markets. Gladiolus flower quality and growth performance are largely depending on growing media, environmental condition but planting dates are considered as key factor which effect the growth indices and quality attributes of the flowers. To evaluate the effect of different sowing dates on growth and flowering of gladiolus, a study was conducted at National Agriculture Research Council Islamabad (NARC) during the year of 2017. Results revealed that sowing date of gladiolus flower significantly affect the reproductive and vegetative phase of plants. It has been observed that seed emergence and spike length was enhanced when seeds were sown at initial dates as compared to late sowing. In contrary to these, plant height and rachis length was reduced at early sowing dates but significantly increased with sowing of seeds at later dates. Overall, it has been concluded from the present study that gladiolus growth performance and flowers quality are improved when seeds were sown at earlier dates compared to late sowing.

Determination of the Effect of Different Sowing Dates on Growth and Yield Parameters of Some Dry Bean (Phaseolus vulgaris L.) Varieties

The sowing date is one of the environmental factors that significantly affected the growth and development of dry beans. Recently, the rapid change of climate required arrangement in its sowing dates. This study aimed to evaluate the effect of different sowing dates (10/03/2018, 04/03/2018, and 04/05/2018) on the phonological, morphological, and yield performances of six dry bean varieties. The experiment was carried out at Dicle University, Faculty of Agriculture Department of Field Crops in the 2018 spring and summer seasons. The experiment established randomized complete blocks design in split plots with three replications. The sowing dates significantly affected the days to seed emergence, days to first flowering, days to 50% flowering, days to maturity, first pod height, number of branches per plant, pod width, plant weight, and pod weight per plant, number of pods per plant, number of seeds per plant, seed yield per plant, biological yield and seed yield. As the sowing date was delayed, there was a decrease in all traits. The highest biological and seed yield was in early to mid-March sowing (10/03/2018) date in Cihan and Aras-98 varieties (1610.90 kg ha-1, 1850.30 kg ha-1, respectively). The early sowing date provided better growth and development in cold tolerance varieties. Adabeyazi, Cihan and Ahlat varieties were the most tolerant to low temperatures, thus the crop growth and yield increased for these varieties in the early to mid-March sowing date.

The effect of sowing dates on the pod yield and some agronomic and quality characteristics of ‘Virginia’-type peanut variety ‘Halisbey’ in the Mediterranean environment

The objective of this study was to determine the effect of different sowing dates on pod yield and some agronomic characteristics of the ‘Virginia’-type peanut cultivar ‘Halisbey’, and to determine the optimal sowing date in the Mediterranean region. This study was conducted in 2018 and 2019 at the Experimental Research Farm of Agricultural Faculty, Cukurova University in Adana, Turkey. The seeds were sown on seven dates: March 28, April 8, April 18, April 28, May 8, May 18 and May 28 each year. The experiment included a randomized complete block design with three replications. The plants were harvested 160 days after sowing, starting on September 8 every year. Pod number and pod weight per plant, 100 seeds weight, shelling percentage, oil and protein content, pod and kernel yield per hectare were investigated. As a result, pod number and weight per plant, 100 seeds weight, shelling percentage, pods and kernel yield values were found to be the highest at the experimental variant with May 8 sowing date. While the oil content decreased by delaying the sowing date, the protein content was increased. According to a two-year average, the highest pod yield (8136 kg ha-1) and kernel yield (5711 kg ha-1) were also obtained at the experimental variant with May 8 sowing date.

Effect of Sowing Dates on the Bacterial Leaf Spot of Bottle Gourd and Pumpkin Caused by Xanthomonas cucurbitae

An experiment was conducted at Experimental Farm, College of Horticulture and Forestry, Neri, Hamirpur during May 2019 to October, 2019 cropping season to study the effect of different sowing dates viz., 17th May (1st), 7th June (2nd), 27 June (3rd) and 17th July (4th) on the development of bacterial leaf spot of bottle gourd and pumpkin caused by Xanthomonas cucurbitae. It was observed that the mean disease severity in both bottle gourd and pumpkin crops decreased with delay in the date of sowing from mid May (40.15 and 31.73%, respectively) to the end of June (27th June, 31.65 and 27.06%, respectively) or mid July (17th July, 23.32 and 20.13%, respectively). The disease incidence was also found to be minimum in the fourth (31.31%) and third (39.60%) dates of sowing in case of bottle gourd fruits and no incidence of the bacterial spot was recorded in case of pumpkin fruits. In the case of bottle gourd, the expected yield loss was minimum in crops sown mid July (31.44%) while in pumpkin, the fruit yield was more in mid July (9.59 kg vine-1) sown crop in comparison to mid May and early June sown crops. So, it was concluded that late June and mid July sown crops of both bottle gourd and pumpkin are less vulnerable to the disease leading to reduced crop losses and higher yield.

Effect of different sowing dates on the determination of the number of leaves and spikelets on the main stem in durum wheat

Effect of different sowing dates on the determination of the number of leaves and spikelets on the main stem in durum wheat

Interplay of irrigation strategies and sowing dates on sunflower yield in semi-arid Mediterranean areas

Sunflower (Helianthus annuus L.) is one of the most cultivated oil crops in the world. Given its high dependence on water availability, its cultivation in the Mediterranean area is severely threatened by climate change: very hot and dry weather conditions currently occurring in the Mediterranean area have a negative impact on sunflower yield. Many studies have pointed to earlier sowing dates as a promising strategy to prevent summer drought stress causing sunflower yield losses, but the literature on winter sowing dates is scarce. The aim of this research was to quantify the interplay between sowing date (winter time included) and water regime to sustain sunflower cultivation in the Mediterranean area. A field experiment and a modeling study were carried out to evaluate the effects of different sowing dates (00SD: ‘conventional sowing date’ in March/April and ‘earlier sowing dates’ in December-January-February, depending on years) under two different water regimes (irrigated vs. rainfed) on quantitative traits of high oleic cultivars of sunflower. Field experiments revealed that sowing in late February - mid March was the most effective strategy in terms of achene productivity. Achene production by sunflower was also simulated using EPIC under a baseline climatic scenario and for 4 hypothetical sowing dates (D1: 10th January, D2: 10th February, D3: 10th March, D4: 10th April) and different irrigation strategies. The most effective sowing date was D3 under rainfed conditions, confirming the results of the field study. Irrigation from 20 days before anthesis up to flowering significantly improved achene yield for the early sowing dates (D1 and D2), which almost reached their respective yield potentials. This confirms that an earlier sowing date could be a viable management strategy in Mediterranean areas with little water availability.

The effect of different sowing dates on dry matter and nitrogen dynamics for winter wheat: an experimental simulation study.

BackgroundTimely sowing is an important agronomic measure to ensure the normal germination, stable seedling establishment, and yield formation for winter wheat (Triticum aestivum L.). Delayed sowing frequently occurs in the current multi-cropping system and mechanized production of this crop. However, the ways in which different sowing dates affect yield and its potential mechanism is still unknown in the middle-lower Yangtze River Basin. We sought to provide a theoretical basis for these mechanisms to improve regional wheat production.MethodsWe investigated the wheat’s yield differences in a two-year field study under different sowing dates and took into account related growth characteristics including meteorological conditions, growth period, tillers, dry matter accumulation (DMA), and nitrogen accumulation (NA). We used the logistic curve model to simulate DMA and NA dynamics of single stem wheat under different sowing dates. We then analyzed and compared wheat accumulation for different sowing dates.ResultsOur results showed that grain yield declined by 0.97 ± 0.22% with each one-day change (either early or delayed) in sowing beyond the normal sowing date. The yield loss could be explained by the inhibition of crop growth, yield components, biomass and nitrogen (N) production. The negative effects of delayed sowing were caused by environmental limitations including adverse weather factors such as low temperature during vegetative growth, shortened duration of various phases of crop development, and increased temperature during the grain-filling period. The grain yield gap decreased between the late and normal sowing periods owing to a compensatory effect between the highest average rates (Vt) and the rapid accumulation period (T) of DMA and NA for single stem wheat. The grain yield was maintained at 6,000 kg ha−1 or more when the ratio of DMA at the mature-to-jointing stage (MD/JD) and the ratio of NA at the mature-to-jointing stage (MN/JN) was 4.06 (P < 0.01) and 2.49 (P < 0.05), respectively. The compensatory effect did not prevent the impact caused by delayed sowing, which caused biomass and N production to decrease. Physiological development reached a maximal accumulation rate (Tm) of NA earlier than DMA.

Kanolada (Brassica napus L.) Farklı Ekim Zamanı, Çeşit ve Tohumluk Miktarının Verim ve Kalite Özelliklerine Etkisi

This study was carried out to determine the effect of different sowing dates and seeding rate on seed yield, oil and protein contents of seed in two rapeseed cultivars in the field of experiment and application of Aydin Adnan Menderes University Faculty of Agriculture during 2014/2015 and 2015/2016. The experiment was the split-split-plot design with 4 replications. The sowing dates, cultivars and seeding rates were arranged to main, sub and sub-sub plots, respectively. This experiment was conducted applying two sowing dates (early and late), two winter type cultivars (NK Petrol and NK Caravel) and five seeding rates (3, 5, 7, 9 and 11 kg ha-1). The early sowing date and 7.0 kg ha-1 seeding rate given the highest seed yield for both cultivars based on two-year results. The interaction between sowing dates and cultivars for crude oil rate was significant, and the highest crude oil rate was recorded in NK Petrol cultivar (43.34 - 43.54%) at the first sowing date in both years. Non-significant protein content for all factors and interactions varied from 19.10% to 23.72%. Finally, it was recommended the earliest possible sowing with 7.0 kg ha-1 seeding rate for seed yield and quality in winter rapeseed growing. Moreover, it was recommended that NK Petrol for early sowing dates and NK Caravel for late sowing dates should be used as a cultivar.

Mehmet Yagmur and Omer Sozen

This experiment was conducted to determine the effects of different sowing dates (5th October, 20th October, 5th November, and 20th November) and sowing depths (2, 4, 6 and 8 cm) on yield and some yield characters in two rowed barley (cv. Tokak 157/37) under rainfed conditions. The field study was conducted in Kirsehir ecological condition during 2014-15 and 2015-16 winter growing seasons. Grain yield and important yield traits such as plant height, spike length, number of fertile spike per square meter, number of grain per spike and grain weight per spike were determined. Sowing dates and depths influenced significantly the grain yield and yield components in two consecutive years. Most of the yield components were adversely affected by deeper sowing depths and delayed sowing dates. Based on two-year average, the highest grain yield was recorded with 2733 kg ha-1 at 20th October sowing date and 4 cm depth; in contrast the lowest grain yield was 513 kg ha-1 by the 20th November and 8 cm depth. Keywords: Cereals, Hordeum vulgare, crop production, dryland, arid agriculture, seedling emergence, grain yield.

Performance of Chickpea Varieties Based on Growth and Yield Parameters Influenced by Different Sowing Dates at Toke Kutaye District, Ethiopia

One of the basic agronomic practices to improve the yield of chickpea are ideal sowing date and high yielding varieties. Thus, a field experiment was conducted to assess the effect of different sowing dates on yield and yield components of chickpea varieties in the main cropping season of 2019 at Toke Kutaye District. Four sowing dates (September 4th, September 14th, September 24th, and October 5th) and four kabuli varieties. Four Kabuli types of chickpea varieties were Dalota, Ejere, Teji and Dube (local check). Experiment was laid out in split plot design using factorial arrangement with three replications and sowing date treatments were assigned to the main plots and varieties to sub plots. The main effect of sowing date showed highly significant effect on days to emergence, days to 50% flowering and physiological maturity. Highest days to emergence                (12.4 days) were recorded from a plot sown on October 5th, while longest days to 50% flowering (54.92 days) and physiological maturity (122.5 days) were recorded from a plot sown on September 14th. Moreover, varieties had significant effect on days to physiological maturity of chickpea. Longest days to physiological maturity (133 days) were recorded from local variety and early days to physiological maturity (113.3 days) was recorded from Dalota variety. The main effects of sowing date and variety were significant on plant height, as the tallest plant height (42.75 cm) was recorded from September 24th sown plants. Similarly, the tallest (41.42 cm) plant was recorded from Dalota variety. In addition, the highest number of primary branches (6.83) and secondary branches (16.42) per plant were recorded from Dalota variety, while the lowest number of primary branch (5.5) and secondary branches (8) were scored from Ejere and Teji varieties, respectively. Highest grain yield (2415.4 kg ha-1) was obtained from plots sown on September 14th whereas Dalota variety produced highest grain yield (2051.25 kg ha-1). Hence, Dalota variety and September 14th sowing date emerged as best among all tested treatments and can be recommended for chickpea production in the study area and similar agro-ecologies. Conclusive recommendation could be obtained if the study is repeated at more locations and seasons in the future.

Evaluating the effects of different sowing dates and tillage methods on dry-land wheat grain dry matter accumulation based on the APSIM model.

Accurate simulation of dry matter accumulation in wheat grains can provide important technical support for regulating wheat production in hilly areas of Loess Plateau. Using the APSIM model, we analyzed dryland wheat grain dry matter accumulation and distribution using the meteorological data from 1971 to 2017 in Anding District, and the field test data from 2016 to 2017 in Anjiagou Village, Fengxiang Town, Anding District, Dingxi City, Gansu Province. Furthermore, the influence of sowing date and tillage method on dry matter accumulation of wheat grain was quantitatively analyzed on the basis of model validation. The results showed that the root mean square error (RMSE) between the simulated and measured values of grain dry matter was 57.5-143.1 kg·hm-2 and the normalized root mean square error (NRMSE) was 1.4%-9.9% under the three sowing dates and four tillage methods, respectively. The precision of the APSIM model was satisfactory. Under different sowing dates, the order for beneficial degree of tillage treatment to dry matter accumulation in wheat grains was no tillage with straw cover &gt; conventional tillage with straw cover &gt; no tillage &gt; conventional tillage. The treatment of no tillage with straw covered was the most favora-ble to dry matter accumulation in wheat grains, with no significant difference between no tillage and conventional tillage treatments. Under different farming methods, early sowing was better than normal sowing and late sowing for the dry matter accumulation process of wheat. Late sowing had stronger impacts on dry matter accumulation, with the least ideal accumulation process.