scholarly journals Effect of Earthing up and Level of Irrigation on Yield and Quality Seed Production of Onion

2014 ◽  
Vol 18 (2) ◽  
pp. 81-91
Author(s):  
MK Ali ◽  
MN Alam ◽  
MAB Barkotulla ◽  
SMAT Khandaker ◽  
PW Simon
Keyword(s):  
Seed Production ◽  
Seed Yield ◽  
Standard Dose ◽  
Germination Percentage ◽  
University Campus ◽  
Irrigation Level ◽  
Yield And Quality ◽  
Number Of Leaves ◽  
First Time ◽  
Plot Design

A field experiment was conducted during the period from October 2001 to April 2002 to study the effect of earthing up and level of irrigation on yield and quality seed production of onion (cv. Taherpuri) at Rajshahi University campus, Rajshahi, Bangladesh. Two different factors were considered, factor (A): Earthing up (E1), without earthing up (E0) and factor (B): irrigation level (5 levels) viz. irrigation start at 1st time and when required (I4), irrigation start at 40 DAP and when required (I3), irrigation start at 60 DAP and when required (I2), irrigation start at 80 DAP and when required (I1), no irrigation or control (I0). The standard dose of cowdung and NPK were applied according to HRDP (1995). The factorial experiment was laid out following at Split Plot Design (SPD) with three replications. The result revealed that bulb emergence, plant height number of leaves, length of scape, tillers, seeded fruits, fruits set, days to blooming, seed yield, 1000-seed weight and germination percentage were significantly influenced by different treatments. The highest seed yield (405.97 kg/ha) was found from earthing up with irrigation start at first time and when required (E1I4) followed by E1I3 (347.37 kg/ha), E0I4 (330.73 kg/ha) compared with other treatments. The results suggested that earthing up with 3-4 times irrigation is more effective for onion seed production in Bangladesh.DOI: http://dx.doi.org/10.3329/pa.v18i2.18163 Progress. Agric. 18(2): 81 - 91, 2007

scholarly journals Effect of Plant Spacing and Np Fertilizer Levels on Growth, Seed Yield and Quality of Onion (Allium cepa L.) at Shewa Robit, Northern Ethiopia

2020 ◽  
Vol 14 (1) ◽  
pp. 12-22 ◽  
Author(s):  
Getachew Amare ◽  
Wassu Mohammed ◽  
Tamado Tana
Keyword(s):  
Seed Production ◽  
Seed Yield ◽  
Germination Percentage ◽  
Seed Vigor ◽  
High Yield ◽  
Limiting Factor ◽  
Northern Ethiopia ◽  
Plant Spacing ◽  
Yield And Quality ◽  
Np Fertilizer

Background: The shortage of quality seed is the major limiting factor of onion production in the study area. Inappropriate use of NP fertilizers and plant spacing is the major source of the problem. Objective: The experiment was conducted to determine optimum plant spacing and NP fertilizer for high yield and quality seed production of onion. Methods: The treatments were composed of plant spacing 10×20×40 cm, 20×30×50 cm, 10×40 cm, 10×50 cm, 10x30 cm and NP fertilizer levels 86.25 P2O5 & 85.5 N kg ha-1, 115 P2O5 & 114 N kg ha-1, 143.6 P2O5 & 142.5 N kg ha-1, 69 P2O5 & 142 N kg ha-1 and control in a 5 x 5 factorial arrangement of RCBD with three replications. Results: The highest seed yield per hectare (879.4 kg) and per plot (663.6 g) was obtained from 115 P2O5 & 114 N kg ha-1 fertilizers and plant spacing 10×30cm gives the highest seed yield per plot (561.7g) and per hectare (748.9 kg). The highest germination percentage was obtained by the interaction effect of 10×30 cm and 143.6 P2O5 & 142.5 N kg ha-1. Whereas, highest seed vigor index I and II were obtained from the interaction of 115 P2O5 &114 N kg ha-1 and 20×30×50 cm spacing. Conclusion: Plant spacing of 10×30 cm followed by 20×30×50 cm and 115 P2O5 &114 N kg ha-1 fertilizers could be recommended for high yield and quality onion seed production in the study area.

Preharvest glyphosate in alfalfa for seed production: Effect on alfalfa seed yield and quality

2003 ◽  
Vol 83 (1) ◽  
pp. 189-197 ◽  
Author(s):  
W. E. May ◽  
H. A. Loeppky ◽  
D. C. Murrell ◽  
C. D. Myhre ◽  
J. J. Soroka
Keyword(s):  
Seed Production ◽  
Seed Yield ◽  
Seed Quality ◽  
Seedling Emergence ◽  
Canada Thistle ◽  
Seedling Vigour ◽  
Yield And Quality ◽  
Alfalfa Seed ◽  
Medicago Sativa L ◽  
Seed Yields

Preharvest applications of glyphosate have been shown to be effective in controlling Canada thistle in annual crops, but may reduce alfalfa seed yield depending on time and rate of application. The objective of this study was to determine the effect of preharvest applications of glyphosate on subsequent alfalfa seed yield and quality. The effects of timing, 1, 26, 51 and 76% alfalfa seed pod maturity, and rate, 0, 440, 880, 1320, and 1760 g a.i. ha-1, of a preharvest application of glyphosate on alfalfa seed yield and quality in the year of application, and regrowth and seed yield in the following year were determined. The rate of glyphosate applied did not affect seed yield in the application year; however, in the following year, growth and seed yield were reduced as rates increased. Delaying the application of glyphosate increased seed yields in the application year, but decreased alfalfa regrowth and flowering the following year. Germination and seedling emergence were not affected by the rate or timing of the glyphosate. A preharvest application of glyphosate at 1760 g a.i. ha-1 at 76% pod maturity is a viable option in the last year of seed production. Key words: Alfalfa (Medicago sativa L.), glyphosate, abnormal seeds, seed quality, and seedling vigour

scholarly journals Influence of Detasseling Methods on Seed Yield of Some Parent Inbred Lines of Turda Maize Hybrids

Agronomy ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 729
Author(s):  
Alexandru Bogdan Ghețe ◽  
Voichița Haș ◽  
Roxana Vidican ◽  
Ana Copândean ◽  
Ovidiu Ranta ◽  
...  
Keyword(s):  
Seed Production ◽  
Seed Yield ◽  
Weather Conditions ◽  
Inbred Lines ◽  
Plant Performance ◽  
Yield Response ◽  
Genetic Purity ◽  
Short Period ◽  
Number Of Leaves ◽  
Hybrid Maize

During the process of maize seed production, in order to ensure the genetic purity of parental forms of hybrid maize, an important work performed is the removal of male inflorescences from plants on mother rows. Hand detasseling has high precision but is labor-intensive. Mechanical detasseling offers the possibility to cover large acreages in a short period of time, but the number of leaves removed has a varying influence on plant performance and seed yield. The aim of this study was to simulate three types of damages on plants similar to those induced through mechanical detasseling and to assess the effects for five inbred lines during the course of three years. Results show that when tassels alone were removed, the average seed yield decreased an average of 4–21%. When two leaves were removed with the tassel, yield decreased an average of 22–31%, while when plants were cut above the main ear, seed yield decreased an average of 31–66%. Environmental conditions influenced seed yield, especially high temperatures during flowering. Yield response to tassel and leaves removal varied between the inbred lines. Genotype controls maize ear and kernel characters, while environmental factors exercise a strong influence on seed yield, due to the succession of years with contrasting weather conditions in a key phenophase. Within the trend of full mechanization in agriculture, identification of inbred lines that cope better with plant damage can assist in optimizing seed production.

scholarly journals Effect of head decapitation and planting density on quality seed production of sprouting broccoli (Brassica oleracea var. italica L.)

2015 ◽  
Vol 7 (1) ◽  
pp. 471-476 ◽  
Author(s):  
D.K. Mehta ◽  
Tarun Singh ◽  
Rajesh Kanwar
Keyword(s):  
Brassica Oleracea ◽  
Seed Production ◽  
Seed Yield ◽  
Seed Quality ◽  
Quality Parameters ◽  
Planting Density ◽  
Plant Spacing ◽  
Yield And Quality ◽  
Number Of Branches

A study was carried out to evaluate the effect of head decapitation and planting density on plant growth, seed yield and quality of sprouting broccoli, Brassica oleracea var. italica L. using cultivar ‘Green Head’. The twenty treatments comprised of combinations of four head decapitation methods viz., D1 (decapitation of primary head at appearance and harvesting seeds from secondary heads), D2 (decapitation of primary head at marketable stage and harvesting seeds from secondary heads), D3 (removal of secondary heads at appearance and harvesting seeds primary head) and ‘D4’ (No decapitation- control) and five planting densities viz., S1 (60x60 cm), S2 (60x45 cm), S3(45x45 cm), S4 (60x30 cm), and S5 (45x30 cm). Decapitation of primary head at appearance and harvesting seeds from secondary heads (D1) and planting density S3 (45x45 cm) independently as well as in combination gave highest seed yield per plot and per hectare. This combination was also found comparable to other combinations for other characters like days to 50% flowering, days to seed harvesting, plant height at harvesting (cm), number of branches per plant, number of siliqua per plant, siliqua length (cm), number of seeds per siliqua and seed quality parameters. Therefore, it is suggested that decapitation of primary head at appearance and harvesting seeds from secondary heads (D1) in combination with plant spacing of 45x45 cm i.e. D1S3 can be recommended for commercial seed production of sprouting broccoli.

scholarly journals Shallot Growth and Yields Based on Ammonium:Nitrate Ratio on Coastal Sandy Soil

2017 ◽  
Vol 2 (2) ◽  
pp. 064
Author(s):  
Wiji Safitri ◽  
Endang Sulistyaningsih ◽  
Benito Heru Purwanto ◽  
Stephen Harper
Keyword(s):  
Sandy Soil ◽  
Dry Weight ◽  
Growth And Yield ◽  
Row Spacing ◽  
Yield And Quality ◽  
Allium Cepa L ◽  
Main Plot ◽  
Number Of Leaves ◽  
Plot Design

Nitrogen was a key component for increasing yield and quality of vegetables like shallots. The growth and development of plants were influenced by nitrogen form. Common plants preferred nitrate for growth, but the enormity preference varies within plant species and other environmental factors. The purpose of this experiment was to study the effect of ammonium:nitrate ratio in sandy soil to growth and yield of shallot (Allium cepa L. Aggregatum group). The experiment had been conducted in August-October 2015 in the sandy land on Samas Beach, Bantul, Yogyakarta, Indonesia. The research was arranged in a Split-Plot design. The main plot was the source of nitrogen (NH4+; NO3-; NH4+: NO3- 1:1; NH4+: NO3- 1:2; and NH4+: NO3- 2:1) and the subplot was cultivars (Crok Kuning, Tiron, and Bima Brebes). Each subplot covered an area of 2.5 m² (2.5 m x 1 m) with three blocks as replications. Shallot bulbs were planted in sixth-row, spacing 20 cm between rows and 15 cm within rows. The dose was applied according to the recommendation of BPTP (urea 200 kg ha-1, ZA 250 kg ha-1, SP-36 150 kg ha-1, and KCl 150 kg ha-1) 144.5 kg N ha-1. Ammonium:nitrate ratio influenced shallot growth in sandy soil through number of leaves at maximum vegetative phase and its leaf area. The NH4+: NO3- 1:2 ratio gave the best result in dry weight of leaves following bulb dry weight than other ratio. Nevertheless, ammonium:nitrate ratio had no significant influence on bulb dry weight (ton ha-1).

scholarly journals Growing season climate affects phenological development, seed yield and seed quality of dill (Anethum graveolens)

2022 ◽  
Author(s):  
Ozlem Alan ◽  
Damla Kanturer ◽  
Alison A. Powell ◽  
Hulya Ilbi
Keyword(s):  
Seed Production ◽  
Seed Yield ◽  
Seed Quality ◽  
Quality Parameters ◽  
Production Environment ◽  
Anethum Graveolens ◽  
Yield And Quality ◽  
Flowering Initiation ◽  
Mean Germination Time

Dill seed production was investigated over two seasons, comprising a spring growing cycle (SGC) and an autumn growing cycle (AGC). The effects of growing cycle on phenological traits, yield and quality of dill seeds formed on different umbels of the mother plant were investigated. Significant differences were noted in the flowering period, seed yield and quality parameters. The SGC resulted in a shorter time from sowing to bolting and flowering initiation compared with the AGC. Plant height, number of umbels/plant, number of umbelets/umbel, umbel diameter, umbel length and seed weight/plant increased in the AGC. In contrast, decreased germination at 20/30°C and at 13°C, and increased mean germination time at 20/30°C in AGC indicated lower seed quality compared with SGC. Primary umbels produced the best yield and higher quality seeds, followed by the secondary umbels while tertiary umbels gave poor yield and quality seeds in both SGC and AGC. In conclusion, AGC was advisable for higher seed yield, but SGC resulted in higher seed quality compared with the AGC. This highlights the need to select a suitable growing cycle to guarantee high seed yield and quality for each seed production environment.

scholarly journals Ergot Resistant Tetraploid Bahiagrass and Fungicide Effects on Seed Yield and Quality

2015 ◽  
Vol 16 (2) ◽  
pp. 56-62 ◽  
Author(s):  
Esteban Rios ◽  
Ann Blount ◽  
Philip Harmon ◽  
Cheryl Mackowiak ◽  
Kevin Kenworthy ◽  
...  
Keyword(s):  
Seed Production ◽  
Seed Yield ◽  
Seed Quality ◽  
Reproductive Efficiency ◽  
Wild Type ◽  
University Of Florida ◽  
Breeding Lines ◽  
Yield And Quality ◽  
The University ◽  
Better Than

Seed production is a critical component in agricultural systems based on bahiagrass and ergot has been reported to significantly reduce seed quality in tetraploid cultivars. Seed yield and quality are important traits to evaluate in the advanced breeding lines developed at the University of Florida. Resistance to ergot was assessed in seven tetraploid bahiagrass breeding lines and the cultivar Argentine. Tebuconazole and pyraclostrobin also were evaluated for managing ergot and increasing seed quality. Argentine and two tetraploid hybrids (Hyb1 and Hyb2) showed the highest levels of ergot severity and incidence. Three wild-type bahiagrass lines (WT-2, WT-4 and WT-5) performed significantly better than Argentine and could be considered resistant to ergot. Anthesis was the critical stage in relation to ergot infection, and a single application of tebuconazole at anthesis reduced ergot severity; however, neither fungicide was able to reduce ergot incidence. Tebuconazole and pyraclostrobin improved seed set, and reproductive efficiency was 2.4% higher after the application of tebuconazole. The slight increase in reproductive efficiency following fungicide application may not be economically justifiable for seed production in bahiagrass. Three advanced tetraploid breeding lines (Hyb1, WT-3, and WT-5) exhibited adequate seed production to be considered for cultivar release. Accepted for publication 24 February 2015. Published 17 April 2015.

scholarly journals Harvest Season and Fertilizer Effects on Seed Production of Leavenworth's Coreopsis

2006 ◽  
Vol 24 (2) ◽  
pp. 63-67
Author(s):  
Jeffrey G. Norcini ◽  
James H. Aldrich ◽  
Frank G. Martin
Keyword(s):  
Seed Production ◽  
Seed Yield ◽  
Herbaceous Species ◽  
Viable Seed ◽  
Fertilizer Rate ◽  
Central Florida ◽  
Yield And Quality ◽  
Percent Germination ◽  
Garden Plants ◽  
Soilless Substrate

Abstract Effects of season and fertilization on seed production were investigated for a central Florida ecotype of Leavenworth's coreopsis (Coreopsis leavenworthii Torr. & A. Gray) grown in containers. Since container-grown ecotypes of native, herbaceous species are frequently grown using nutrient regimes lower than those for production of typical garden plants, Osmocote 18N–2.6P–10K (18–6–12;8–9 month formulation) was incorporated into the soilless substrate at one-half the low, low, and medium label rates for container-grown herbaceous plants [1.8, 3.6, and 5.4 kg/m3 (3.0, 6.0, and 9.0 lb/yd3], respectively. Seed were harvested from mature heads (capitulescences) in late May to mid-July, and then again from late July to late October after plants had been cut back and reflowered. Seed yield and quality were greatest for the May–July harvest. Averaged over fertilizer rate, there were 3-fold more filled seed per mature head for the May–July harvest than during July–October. Mature head production was most responsive to increases in fertilizer rate during May–July. Percent germination of viable seed was nearly 90% or more for both harvests, but there were more viable seed for May–July than for July–October (75 vs. 57%). Seed also ripened much more uniformly during May–July then during July–October. Based on these conditions and results, the best time to harvest seed was from May to early July.

scholarly journals Effect of Planting Windows for Seed Production of Soybean (Glycine max L.) in off Season under Kaylan Karnataka Region

2020 ◽  
pp. 130-138
Author(s):  
K. Lokesh ◽  
. Basavegowda ◽  
Mallikarjun Reddy ◽  
. Siddaram ◽  
P. D. Suhas ◽  
...  
Keyword(s):  
Seed Production ◽  
Seed Yield ◽  
Seed Quality ◽  
Agricultural Research ◽  
Research Station ◽  
Planting Time ◽  
Agricultural Research Station ◽  
Yield And Quality ◽  
Sowing Dates

Aim: To identify the best planting time for obtaining higher seed yield and quality of Soybean in off season. Study Design: Randomized completely block design (RCBD) Place and Duration of Study: Agricultural Research Station, Halladkere, Bidar, Karnataka between 2016 and 2017. Methodology: A field experiment was conducted at Agricultural Research Station, Halladkere, Bidar to find out the best off season planting time for quality seed production of Soybean. The certified seeds of soybean varieties, JS-335 and Dsb-21 were sown with recommended package of practices at appropriate field condition from November to February at every fortnight with a spacing of 30 cm X 10 cm. The quality parameters related to seed were carried out in the laboratory of seed science department. Further, soybean seeds were treated with fungicide (carbendazim 25% + mancozeb 75%) at the rate of 3 gram per kg of seeds. Results: From the present investigation, it was observed that among the different sowing dates, soybean varieties (JS 335 and DSb 21) sown during 1st fortnight of November recorded significantly higher plant growth parameters as well as seed yield followed by 2nd fortnight of November during off season. Further, climatic factors like rainfall, maximum and minimum temperature and relative humidity played a major role in the off season to produce higher seed yield and quality of Soybean. Conclusion: Among various sowing dates, November 1st Fortnight sowing resulted in highest seed yield with better seed quality in both cultivars (JS-335 and Dsb-21) of soybean.

scholarly journals Effect of thickening of watermelon sowing on yield and seed quality

2021 ◽  
pp. 181-190
Author(s):  
V. F. Zavertaliuk ◽  
V. O. Bohdanov ◽  
O. V. Zavertaliuk ◽  
I. I. Kolesnyk
Keyword(s):  
Seed Production ◽  
Seed Yield ◽  
Seed Quality ◽  
Sweet Corn ◽  
Green Bean ◽  
Green Beans ◽  
Watermelon Seed ◽  
Yield And Quality ◽  
Main Crop ◽  
Net Profit

Purpose and objectives. To study the effect thickening plantations of watermelon seed plants on seed yield and quality, using different thickening designs in the Northern Steppe of Ukraine. Materials and methods. The main crop was watermelon. Sweet corn and green bean were used as thickeners. The thikeners were placed in watermelon interrows or in rows with the following layouts: 1.4 m x 1.0 m and 2.8 m x 1.0 m (sweet corn) and 1.4 m x 0.5 m, 2.8 m x 0.5 m (green beans). Results and discussion. The highest output of seeds per fruit (21.3 g) was recorded when sweet corn was sown between watermelon rows with a layout of 2.8 m x 1.0 m (18.4 g in the control). Growing sweet corn in watermelon interrows increased the 1000-seed weight from 52.6 g (control) to 55.5 g. The highest yield of watermelon seeds (187 kg/ha) was obtained in plantations where sweet corn was grown watermelon interrows with a layout of 2.8 m x 1.0 m (+ 21 kg/ha or 12.7% to the control). The use of green bean as a thickener for watermelon was less effective. The yield increased by 7-15 kg/ha (4.2–9.0%) compared to the control. In addition, 0.8-1.8 t/ha of milky-wax cobs of sweet corn and 47–98 kg/ha of green beans were harvested. Conclusions. The use of thickeners grown between rows of the main crop is the most effective technological technique in the Northern Steppe of Ukraine to increase the yield and improve the quality of watermelon seeds. Our experiments demonstrated that sweet corn was the best thickener, interrow was the best placement, and 2.8 m x 1.0 m was the best layout. This method in watermelon seed production allows increasing the seed yield by 12.7% related to the control (no thickeners) and raising the economic efficiency of seed production due to a gain in the net profit of 14,800 UAH/ha (26.4%) and profitability by 37.9% while maintaining high sowing indicators of seeds

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