Effect of sowing date and nitrogen on yield, components yield and oil characteristic of medicinal flax

Planta Medica ◽  
2009 ◽  
Vol 75 (09) ◽  
Author(s):  
MM Rahimi ◽  
G Normohamadi ◽  
A Aeinehband
Keyword(s):  
Yield Components ◽  
Sowing Date

scholarly journals Evaluation of Genotype, Environment, and Management Interactions on Fava Beans under Mediterranean Field Conditions

Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1088
Author(s):  
Mohamed Houssemeddine Sellami ◽  
Antonella Lavini ◽  
Davide Calandrelli ◽  
Giuseppe De Mastro ◽  
Cataldo Pulvento
Keyword(s):  
Vicia Faba ◽  
Seed Yield ◽  
Yield Components ◽  
Seed Quality ◽  
Sandy Loam ◽  
Sowing Date ◽  
South Italy ◽  
Vicia Faba L ◽  
Fava Beans ◽  
Total Seed

Faba beans (Vicia faba L.), also known as fava beans, like other crops, are influenced by several factors: their genotype, environment, and management, as well as the interaction between these, have an important impact on seed yielding and seed quality traits. This study was conducted at three locations in South Italy between 2017 and 2019 to evaluate the sowing date effect on yield and yield components of three Vicia faba L., originating from cool climates. The results showed that seed yield (SY) and yield components declined with sowing delay. The crop’s environment (year × site) and management (sowing date) were found to explain 34.01% and 42.95% of the total seed yield variation, respectively. The data showed that the tested genotypes were positively influenced by the environment with sandy loam soil and early winter sowing date, resulting in either a greater number of SY and THS than in the other environment. The three faba bean genotypes showed tolerance to winter frost conditions in the two growing seasons.

scholarly journals Performance and Potentiality of Camelina (Camelina sativa L. Crantz) Genotypes in Response to Sowing Date under Mediterranean Environment

Agronomy ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1929
Author(s):  
Luciana G. Angelini ◽  
Lara Abou Chehade ◽  
Lara Foschi ◽  
Silvia Tavarini
Keyword(s):  
Fatty Acid ◽  
Yield Components ◽  
Central Italy ◽  
Sowing Date ◽  
Oilseed Crop ◽  
Growing Seasons ◽  
Acid Ratio ◽  
Main Plot ◽  
Beginning Of Flowering ◽  
Autumn Sowing

Given the growing interest for camelina, as a multipurpose oilseed crop, seven cultivars and two sowing times were compared to characterize camelina’s production potential in the rainfed agroecosystems of Central Italy. A split-plot design, with sowing date as main plot (autumn and spring) and cultivar (V1, V2, V3, V4, V5, V6, and CELINE) as subplot, was adopted over two growing seasons (2017–2019). Phenology, yield and yield components, protein and oil content, and fatty acid profile were evaluated. Going from autumn to spring sowing, a significant reduction was observed in the number of days (139 vs. 54 days) and GDD (642 vs. 466 °C d) from emergence to beginning of flowering, with more consistent variations among cultivars. V1 and V2 were the earlier ones both in spring and autumn sowing. Autumn sowing increased seed yield (+18.0%), TSW (+4.1%), number of siliques per plant (+47.2%), contents of α-linolenic, eicosenoic, erucic and eicosadienoic acids, and polyunsaturated to saturated fatty acid ratio. Regarding genotype, V3 showed the best seed and oil yield in autumn, whereas V1 and CELINE were the best performing in spring. Finally, TSW and number of siliques per plant were the key yield components for camelina. Results identify, in relation to sowing date, the most suitable cultivars for the tested environment, in terms of earliness and quanti-qualitative traits.

Sowing date affects yield components of canarygrass seed

2003 ◽  
Vol 83 (2) ◽  
pp. 357-362 ◽  
Author(s):  
J. L. Bodega ◽  
M. A. De Dios ◽  
M. M. Pereyra Iraola
Keyword(s):  
Seed Yield ◽  
Yield Components ◽  
Dry Matter ◽  
Developmental Stages ◽  
Block Design ◽  
Sowing Date ◽  
Growing Seasons ◽  
Sowing Dates ◽  
Four Blocks ◽  
Number Of Seeds

Canarygrass (Phalaris canariensis L.) crops are sown from June to mid-September in the southeastern area of the province of Buenos Aires, Argentina. Sowing dates in this range result in different growing temperatures and photoperiods that affect the duration of developmental stages, biomass production, and seed yield and its components. For Argentina, there are no reported studies that address these effects. This study on the effects of sowing date was conducted during four growing seasons (1996–1999) at the Instituto Nacional de Tecnologí a Agropecuaria (INTA) Experimental Station at Balcarce, Argentina, using a population provided by Dr. Jaime Lloveras, University of Leyda, Spain. Different seeding dates were chosen from June to mid-September. The experiment was a randomized complete block design with four blocks. When the sowing date was delayed, total dry matter (DM) decreased. For early sowing dates seed yield was constant, but after 10 August it was reduced by 1.5% for each day of delay. Earlier sowing increased the duration of pre-anthesis development with greater uniformity in panicle size and the number of seeds. Seed yield was related lin early to the number of seeds and plant dry matter yield (DMY). The rate of progress from emergence to anthesis (1/days from emergence to anthesis) was proportional to the mean photoperiod. Under the environmental conditions in Balcarce, the accumulated required thermal units for anthesis was reduced when sowing was delayed from June to September. This reduction was related to the photoperiod and was estimated as –189.3 growing degree-days per hour of photoperiod increment. Key words: Canarygrass, seed yield, sowing date, yield components

scholarly journals Soybean (Glycine max (L.) Merr.) Yield Reduction due to Late Sowing as a Function of Radiation Interception and Use in a Cool Region of Northern Japan

Agronomy ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 66 ◽  
Author(s):  
Etsushi Kumagai ◽  
Tomoki Takahashi
Keyword(s):  
Yield Components ◽  
Growth Parameters ◽  
Sowing Date ◽  
Yield Reduction ◽  
Node Number ◽  
Radiation Interception ◽  
Canopy Development ◽  
Cool Region ◽  
Relationship Of ◽  
Late Sowing

Yields decrease when soybean is sown later than recommended in the cool climate of the Tohoku region of Japan. However, the factors responsible for this decrease are not fully understood. We investigated the effects of late sowing on growth, phenological development, yield, yield components, and radiation interception of three soybean cultivars in two consecutive years and analyzed the relationships of those variables with temperature and soil volumetric moisture content (SMC). Averaged across years and cultivars, yields decreased significantly when plants were sown approximately three weeks late. Yield reductions were partially due to reductions in node number per plant, dry matter production, and capture of cumulative irradiance, resulting from slowed canopy development during vegetative and early reproductive stages. The number of seeds per pod was one of the major determinants of the variation in yield. Owing to the delay in sowing date, the reduction in seeds per pod was likely due to low temperatures during the 20 days after seed filling began. Occasional lower SMC during reproductive stages did not affect yield, yield components, and growth parameters. However, these results were obtained from the two years’ experiments. Therefore, further investigations of the relationship of yield with temperature and SMC under different years and sites are needed.

Floret survival in wheat: significance of the time of floret initiation relative to terminal spikelet formation

1982 ◽  
Vol 98 (2) ◽  
pp. 257-268 ◽  
Author(s):  
E. E. Whingwiri ◽  
W. R. Stern
Keyword(s):  
Triticum Aestivum ◽  
Yield Components ◽  
Field Experiments ◽  
Treatment Time ◽  
Vascular System ◽  
Sowing Date ◽  
Nitrogen Application ◽  
Yield And Yield Components ◽  
Individual Grains ◽  
Initiation Period

SUMMARYWheat (Triticum aestivum L.) cv. Gamenya was grown in a Mediterranean type environment in two separate field experiments, to determine the effects of nitrogen application and date of seeding on floret survival. One treatment, intermediate in nitrogen level and sowing date, was common in both experiments. Rates and durations of spikelet initiation and durations of the floret initiation period were estimated. At maturity, yield and yield components were measured and occurrence of individual grains at each floret position on odd-numbered spikelets were recorded. The time of floret initiation relative to terminal spikelet formation and the subsequent occurrence of grain were examined.Florets developed first in spikelets 5-13 and last in spikelet 1. Added nitrogen hastened the initiation of florets but did not affect the number initiated; it also increased the numbers of grains per spikelet. In the last sowing date treatment, time to floret initiation decreased, but the sequence of floret initiation was unaffected.Numbers of florets and grains on tillers were less than on main shoots. Only about 28% of all florets initiated developed into grain.The main conclusion was that the florets which initiated before the terminal spikelet formed grain and those that initiated afterwards did not; we accordingly postulate that the vascular system between the rachis and the floret develops as the floret is initiated, but that after terminal spikelet formation, this is inhibited and further grains then fail to develop.

scholarly journals Effect of Sowing Date and Humic Acid Foliar Application on Yield and Yield Components of Canola Cultivars

2019 ◽  
Vol 25 (1) ◽  
pp. 70-78
Author(s):  
Fatemeh BAREKATI ◽  
Eslam MAJIDI HERVAN ◽  
Amir Hossein SHIRANI RAD ◽  
Ghorban NOOR MOHAMADI
Keyword(s):  
Humic Acid ◽  
Yield Components ◽  
Foliar Application ◽  
Sowing Date ◽  
Yield And Yield Components

scholarly journals Influence of Sowing Date on Growth and Yield Components of Sunflower (Helianthus Annuus L.) in Semi-Arid Zone

2019 ◽  
Vol 2 (2) ◽  
pp. 36-42
Author(s):  
Hilwa, D. Abu Anga ◽  
Wael A. Marajan ◽  
Abu backer H. Mohammed ◽  
Baha Eldin M Idris
Keyword(s):  
Plant Height ◽  
Yield Components ◽  
Arid Zone ◽  
Block Design ◽  
Dry Weight ◽  
Sowing Date ◽  
Growth And Yield ◽  
Area Index ◽  
Head Diameter ◽  
Semi Arid

The main objective of this study was to quantify the influence of sowing date on growth and yield components of hybrid sunflower (Hysun33) cultivar in semi-arid zone. This experiment was conducted during the seasons 2014/2015-2015/2016 at the farm of the College of Agricultural Studies, Sudan University of Science and Technology, Shambat, Khartoum- Sudan. The experiment was arranged in randomized complete block design (RCBD) with four replications and three treatments. Different parameters were considered including plant height, leaf area index (LAI), filled sees number/head, head diameter, dry weight and yield components. The collected data were statistically analyzed. The results revealed that crop sown in May and July showed significant increase in plant height, LAI, head diameter, dry weight, field seed number/head, weight of 100 seeds; yield, and yield; compared to crop sown in March. However, crop sown in the second season showed an increase in growth and yield components compared to the crop of the first season.

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