Relevant bibliographies by topics / Seed emergence

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Seed emergence'

Author: Grafiati
Published: 4 June 2021
Last updated: 15 February 2022

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Journal articles on the topic "Seed emergence"

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Farhoudi, R., and D. J. Lee. "Halopriming corn seeds improves seed emergence and carbohydrate metabolism under salinity stress." Seed Science and Technology 42, no. 3 (December 1, 2014): 461–65. http://dx.doi.org/10.15258/sst.2014.42.3.13.

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Borgmann, Claudia, Luciene Kazue Tokura, Bruna de Villa, Deonir Secco, Jair Antonio Cruz Siqueira, Pablo Chang, Alessandra Mayumi Tokura Alovisi, et al. "Seeds of Carthamus Tinctorius Submitted to Hydration: Morphological Aspects and Emergence." Journal of Agricultural Science 11, no. 16 (September 30, 2019): 38. http://dx.doi.org/10.5539/jas.v11n16p38.

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The present study aimed to evaluate the initial development of safflower genotypes (Carthamus tinctorius) after different periods of seed hydration. For the study two experiments were evaluated. At first, an experiment was performed with 0, 24, 48, 72, 168 and 360 hours of seed hydration, and in the second moment, another with 0, 12, 24, 36, 48 and 60 hours of hydration. The experimental design for the two experiments was completely randomized, with four replicates and six treatments. After 30 days of conduction of the experiments were analyzed the percentage of emergency, index of emergency speed, average time of emergency and average speed of emergency. The evaluated morphological characteristics were plant height, stem diameter, root length, fresh shoot and root mass and dry shoot mass. Hydration of seeds in considerable proportions positively influences the emergence and development of safflower plants. The highest performance in the emergence of plants, size, accumulation of fresh and dry shoot mass and fresh root mass was obtained by the IAPAR genotype, which stood out in relation to the other. The greatest emergencies were obtained with seeds with 36 hours of hydration, and the lowest emergence was found after 72 hours under hydration.
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Brown, Doug. "Estimating the composition of a forest seed bank: a comparison of the seed extraction and seedling emergence methods." Canadian Journal of Botany 70, no. 8 (August 1, 1992): 1603–12. http://dx.doi.org/10.1139/b92-202.

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The composition of a forest seed bank was estimated using two methods: (i) seed extraction, i.e., the physical separation of the seeds from the soil via flotation in a salt solution, and (ii) seedling emergence, i.e., the germination of seedlings from soil samples incubated under greenhouse conditions for 5 months. The extraction method predicted a density of 12 500 seeds∙m−2, while the emergence method detected 3800 émergents∙m−2. There was considerable disparity in species composition derived from the two methods. The extraction method identified 102 different taxa, with 22 species making up 99% of the seeds and 5.6 + 0.2 species per sample. In contrast, the emergence technique identified fewer species (60) but had more species per sample (7.6 + 0.2). Eleven species made up 99% of the emergents. Verbascum thapsus represented 34% of the seedlings in the emergence study but only 1 % of the extracted seeds. Members of the Polygonaceae represented 19% of the extracted seeds but less than 1 % of the seedling emergents. No tree or shrub species were found with the emergence method, although they represented 8% of the extracted seeds. There was a poor correlation between the estimates of species number, seed density, and diversity obtained from the two methods. The seed extraction method had considerably higher variability for these parameters. It is apparent from this study that the seedling emergence and seed extraction methodologies do not produce similar estimates of the seed bank composition. The differences are such that comparisons should not be drawn between studies using the different methods. Careful considerations should be given to both the objectives of the seed bank study and the relevant literature prior to the selection of an appropriate method. Key words: seed bank, method, composition, diversity, density, sample number.
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Spitzer, T., D. Spitzerová, P. Matušinský, and J. Kazda. "Possibility of using seed treatment to suppress seed-borne diseases in poppy." Plant Protection Science 50, No. 2 (May 6, 2014): 78–83. http://dx.doi.org/10.17221/76/2012-pps.

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In experiments using Petri dishes in the laboratory and pots in a greenhouse and climate chamber, we examined the influence of seed treatment on emergence of poppy. Four types of fungi (Alternaria spp., Dendryphion penicillatum, Fusarium spp., and Penicillium spp.) were detected on poppy seeds, with the highest infection rate being 72% for D. penicillatum. Surface disinfection decreased infection rate chiefly in D. penicillatum (by 32%) and in Alternaria spp. (by 16%). Seed treatment increased emergence by 9–10% in laboratory experiments but by only 0–6% in greenhouse experiments. Temperature plays an important role in emergence. In climate chamber experiments at a stable temperature of 12°C, the seed treatments increased emergence by 8–16%.  
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Boligon, Alexandra Augusti, Alessandro Dal'Col Lúcio, Sidinei José Lopes, Alberto Cargnelutti Filho, and Danton Camacho Garcia. "Wheat seedling emergence estimated from seed analysis." Scientia Agricola 68, no. 3 (June 2011): 336–41. http://dx.doi.org/10.1590/s0103-90162011000300010.

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There are various vigor tests for the evaluation of seeds physiological quality, however, few studies correlate this tests with plants emergency. This study aimed at identifying wheat (Triticum aestivum L.) seed analysis variables that best predict seedling emergence. Wheat seeds (CEP 30 cultivar) were divided into two batches, one initially subjected to the accelerated ageing process and forming the low-quality batch, and the other, without application of the accelerated ageing process, to compose a high-quality batch. The following seed test variables were evaluated: (i) percentage of normal seedlings in the germination tests, (ii) initial germination counting, (iii) accelerated ageing, (iv) cold test without soil, (v) germination speed index, and (vi) emergence of seedlings in sand after seven and 15 days. The following seedling characteristics were evaluated: root and shoot lengths, total length, and dry mass of the root and shoot. The characteristics evaluated for the seedlings were subjected to path analysis and the seed tests variables to stepwise multiple regression analysis, taking seedling emergence at seven days as the response variable. Factor analysis was also carried out on all variables. Dry mass of the shoot and root length presented the best correlation with seedling emergence for the high-quality batch, but this behavior was not observed for any variable in the low-quality batch. Accelerated ageing was the best seedling emergence estimator for both batches of the used cultivar.
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Harrison, S. K., E. E. Regnier, J. T. Schmoll, and J. M. Harrison. "Seed Size and Burial Effects on Giant Ragweed (Ambrosia trifida) Emergence and Seed Demise." Weed Science 55, no. 1 (February 2007): 16–22. http://dx.doi.org/10.1614/ws-06-109.1.

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Giant ragweed is a competitive, allergenic weed that persists in agricultural fields and early successional sites. Field experiments were conducted to determine the effects of seed size and seed burial depth on giant ragweed emergence and seed demise. In a seedling emergence experiment, small (< 4.8 mm in diameter) and large (> 6.6 mm in diameter) seeds were buried 0, 5, 10, and 20 cm in fall 1997, and weed emergence was monitored over the next seven growing seasons. A generalized linear mixed model fit to the cumulative emergence data showed that maximum emergence for both seed sizes occurred at the 5-cm burial depth, where probability of emergence was 19% for small seeds and 49% for large seeds. Emergence probability at the 10-cm burial depth was 9% for small seeds and 30% for large seeds, and no seedlings emerged from the 20-cm burial depth. The model predicted that ≥ 98% of total cumulative emergence was completed after four growing seasons for large seeds buried 5 cm, five growing seasons for small seeds buried 5 cm and large seeds buried 10 cm, and seven growing seasons for small seeds buried 10 cm. Seed size and burial treatment effects on seed demise were tested in a second experiment using seed packets. Rates of seed demise were inversely proportional to burial depth, and the percentage of viable seeds remaining after 4 yr ranged from 0% on the soil surface to 19% at the 20-cm burial depth. Some seeds recovered from the 20-cm burial depth were viable after 9 yr of burial. These results, coupled with previous research, suggest that seed size polymorphism facilitates giant ragweed adaptation across habitats and that a combination of no-tillage cropping practices, habitat modification, and timely weed control measures can reduce its active seed bank in agricultural fields by 90% or more after 4 yr.
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Lindgren, Dale T., and Daniel M. Schaaf. "Influence of Seed Stratification and Seed Age on Emergence of Penstemon." HortScience 39, no. 6 (October 2004): 1385–86. http://dx.doi.org/10.21273/hortsci.39.6.1385.

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Studies were conducted to evaluate the effect of stratification and seed age on percent seedling emergence of Penstemon. Emergence differences occurred between the eight Penstemon selections, as well as between seed stratification treatments and seed age. Seed stratification significantly increased emergence. Emergence varied from 0% with 1-year-old seed of Penstemon digitalis with no stratification, to 72.8% emergence with 2-year-old seed of P. angustifolius with 10 weeks of stratification. Seedlings from 3- to 4-year-old seed generally emerged as well as or better than with 1- and 2-year-old seed. Percent emergence varied significantly with stratification, seed age, and species. Some emergence occurred with species from seed up to 10 years old.
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Finch-Savage, W. E., and W. G. Pill. "Improvement of carrot crop establishment by combining seed treatments with increased seed-bed moisture availability." Journal of Agricultural Science 115, no. 1 (August 1990): 75–81. http://dx.doi.org/10.1017/s0021859600073949.

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SUMMARYIn studies of carrots sown on three dates at Wellesbourne in 1986, mean time to seedling emergence and spread of times to seedling emergence of untreated and fluid-drilled seeds increased as seed-bed moisture at sowing decreased. These differences were not observed with irrigation before sowing.Osmotic priming increased the percentage of seeds with emerged radicles at the time of fluid drilling from 17% in the untreated control to 56%. Irrespective of seed-bed moisture, time to emergence was shorter from primed germinating seeds than from germinating seeds, both treatments giving earlier seedling emergence than untreated seeds. Seedling shoot weight was greater from treated than from untreated seeds.Seed-bed characteristics on unirrigated plots had no effect on seedling emergence when soil moisture was adequate but, where soil moisture was limiting, rolling the seed bed to increase capillarity resulted in 79% emergence compared with the 67% average from seed beds that were not rolled. Application of a soil conditioner to stabilize the seed-bed surface structure generally improved emergence when rain fell soon after sowing. The results suggested that a combination of seed-bed and seed treatments can significantly improve the predictability of crop establishment of carrots on different dates.
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Hakl, J., K. Mášková, J. Šantrůček, and M. Fér. "Seed emergence of lucerne varieties under different soil conditions." Czech Journal of Genetics and Plant Breeding 48, No. 2 (May 30, 2012): 93–97. http://dx.doi.org/10.17221/8/2012-cjgpb.

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The aim of this study was to examine in greenhouse experiments seed emergence of 14 lucerne varieties (mostly of the Czech origin) under different soil conditions (Luvisol, Chernozem and Cambisol). Soil conditions significantly influenced seed emergence in seven varieties. Their seed emergence was lower in Cambisol (72%) than in Chernozem (80%) and Luvisol (91%). In other varieties the soil effect was not significant. The effect of variety could not be separated from the effect of seed lot in our experiment. However, germination, occurrence of hard seeds, germinative energy and thousand-seed weight were not significantly different between the groups of varieties that could be classified as sensitive and tolerant to the examined soil conditions. The obtained results indicated that the selection of suitable lucerne variety or seed lot could be a tool for improving emergence in deteriorated soil conditions.
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Barut, Z. B., and M. I. Çağırgan. "Effect of seed coating on the accuracy of single-seed sowing of sesame under field conditions." Australian Journal of Experimental Agriculture 46, no. 1 (2006): 71. http://dx.doi.org/10.1071/ea04201.

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Sesame seed treatments consisted of 2 different coatings and uncoated seeds. These were tested to determine their effect on accuracy of plant spacing after emergence in single-seed sowing under different field conditions. Seedbed treatments were composed of traditional tillage without crop residue and conservative tillage with wheat stubble. To quantify plant spacing accuracy and emergence uniformity, spacing between plants within a row and plant emergence per day were measured. The measurements were used to calculate the quality of feed index, multiples index, skip index, precision, emergence rate index, mean emergence date and the percentage of emergence. It was concluded that seed treatments had a significant effect on multiples index and skip index of horizontal distribution pattern and emergence rate index, mean emergence date and the emergence percentage. The coating acted negatively on seed germination and led to missing plants and less plant spacing uniformity in the row. The shortest emergence date and maximum percentage of emergence and quality of feed index were obtained with uncoated sesame seeds. The parameters, except emergence rate index, were not affected statistically by tillage treatments. It was found that all seeds emerged in less time on conservation tillage plots with stubble.
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Dissertations / Theses on the topic "Seed emergence"

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Detoni, Cezar Ernesto. "Grain Sorghum Field Emergence and Seed Vigor Tests." Diss., Virginia Tech, 1997. http://hdl.handle.net/10919/30649.

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Poor emergence of sorghum [(Sorghum bicolor (L) Moench] affects the stand and potential yields. The major objective of this research was to find correlations among field emergence data and laboratory seed vigor tests. Thirty-two and 30 hybrids of sorghum were planted at three Virginia locations in 1995 and 1996, respectively. Field emergence was subsequently compared with results from laboratory tests that included: 1) standard germination; 2) osmotic-stress using polyethylene glycol 8000 (mw); 3) heat-shock using 2 hr at 50?C stress; 4) electrical conductivity of steep water of germinating seeds; and 5) seed mass. Field emergence of grain sorghum differed among hybrids, years and locations. Mean emergence across years and locations was 67.5%, whereas mean germination in the laboratory was 87.8%. There were interaction between hybrid and location and between hybrid and year. Germination under optimal conditions (standard germination test) and with osmotic or heat-shock stress differed among hybrids. Regression analyses showed a weak correlation between laboratory germination (with or without stress) and field emergence in both years. The fresh weight of seedlings whether from standard germination or stress tests also differed among hybrids in both years, and the associations with field emergence were weakly correlated in 1996. Hybrids showed significant differences in radicle length when grown under laboratory stress in both years following standard germination. There was a weak correlation with field emergence and radicle length following heat-shock treatment in 1996. The measurement of electrical conductivity in the seed steep water showed significant differences among hybrids. A weak correlation with field emergence was seen in 1996. Conductivity values per gram of seed and per cm2 of seed area revealed differences among hybrids. The correlation of these parameters with field emergence was higher than conductivity per seed. Seed mass varied among hybrids in both years , but was no correlation between seed mass and emergence. Of the laboratory parameters examined, germination proved to be the most consistent predictor of variations in field emergence of sorghum hybrids.
Ph. D.
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Schutte, Brian J. "Biology and ecology of Ambrosia Trifida L. seedling emergence." The Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=osu1181937971.

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Dzomeku, Israel K. "Modelling seed dormancy, germination and emergence of Striga hermonthica." Thesis, University of Reading, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.252261.

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Sinclair, John. "Crusting, soil strength and seedling emergence in Botswana." Thesis, University of Aberdeen, 1985. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU363198.

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This thesis gives the results of an investigation of the strengths and particularly the crust forming potential of arable soils from Botswana and the relationship to seedling emergence of sorghum, the most important crop in Botswana and one that because of its small seed weight (about 2 0 mg) can fail to emerge through a hard soil crust. A review of the literature suggested that the soil factors which had to be considered were dispersibility of clay and factors which affect this, and the bulk density of the soils. Soils which are found in many tropical and sub-tropical regions, with low organic matter and inactive clays can set hard after a simple wetting and drying cycle. In these soils, the strength is very strongly dependent on the water content, showing a hyperbolic or exponential relationship-, and the strengths when dry may be very greatly increased by remoulding the wet soil. The crust strength required to prevent seedling emergence varies with the size of the seedling and for cotton (seed weight about 80 mg), 1-3 MPa penetration resistance measured with a penetrometer is sufficient to prevent emergence. Seedlings exert a total force proportional to their number. In the experimental programme, seedlings' forces were measured, seedling emergence observed in a field experiment under crusting conditions, and the strength characteristics of a group of soils, representative of arable soils in Botswana, studied. A sorghum seedling was found to exert a maximum force of about 1 N or dividing by the area of the plumule, a pressure of about 0,5 MPa. The field experiment showed that much better emergence was obtained from planting 15 seeds together than from planting 4 seeds together when a crust formed after planting. A study of 32 soils, most of them sand to sandy loam in texture but with a few clays and hydroirorphic soils, from arable areas in Botswana showed the sandy to sandy loam soils to have high bulk densities ( 1,45-1 ,75 Mg/m3) and extremely low organic carbon contents (0,12-0,85 g/100g). The bulk densities of all the soils were inversely related to the organic carbon content and this was itself related to the clay content of the soils. The bulk densities of the sands were dependent on the grading of the sand fraction. Many of the soils were sensitive to remoulding in the Emerson test and the sands to loany sands had 0,4-1,0 g/100 g water dispersible clay. Measurements of tensile strength on air-dry samples showed that all the soils, except for one sand, set hard after a wetting and drying cycle, giving for vacuum wet samples indirect tensile strengths 1,0-14,4 kPa. For the sands to sandy loams this strength was related to the water dispersible clay content. Samples wet at atmospheric pressure were weaker than the vacuum wet samples, the reduction in strength was related to the air porosity of the non-vacuum wet soils prior to drying. Remoulding the soils prior to drying them increased the strength by a factor of up to 50 times, giving strengths from 4 kPa to 600 kPa. The strength after remoulding was dependent on the Emerson index. Compacting the soils increased their strength greatly and to an extent that agreed with the hypothesis that the strength obtained was proportional to the area of contact between the particles. Experiments on penetration resistance at a range of water contents were performed on a few soils. A hyperbolic relationship between water content and penetration resistance of the surface soil was found for sand to sandy loam soils, with the maximum resistance of dry soils above 2 MPa. The penetration resistance of the sandy loam soil was Increased three times by disturbing it when wet. Sprinkler wetting the sieved soils was not found to affect the penetration resistance by a large amount compared and other methods of welting. Penetration resistance was measured on air-dry samples of most of the main group of soils following varying degrees of wetting with a rainfall simulator. The clays and hydromorphic soils gave very low values of penetration resistance under these conditions, showing that at organic carbon contents of about 1% and clay contents from 20 to 30%, the decreased bulk density and tendency to form aggregates' on drying overcame the tendency to set hard. The mean values for the sands to sandy loams were from 1 to 6 MPa so all these soils could offer significant resistance to a sorghum seedling. The penetration resistance of the sands and loam/ sands depended on their bulk densities and water dispersible clay contents, while the penetration resistance of the sandy loams depended only on the water dispersible clay content.
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Khadka, Samida. "Environment and hormone effects on seed biology of kochia (Kochia scoparia)." Thesis, Kansas State University, 2017. http://hdl.handle.net/2097/36231.

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Master of Science
Department of Agronomy
Johanna A. Dille
Understanding the impact of early spring environmental conditions on kochia seed biology as well as time from flowering to seed maturation could suggest effective control practices. Kochia seed accessions were exposed to moisture stress or different phytohormone combinations across a range of temperature conditions to evaluate cumulative seed germination. Base temperature (T[subscript b]) and base water potential (ψb) were determined and used to calculate thermal (TT), hydro (HT), and hydrothermal (HTT) time to describe cumulative percent kochia germination across the environmental conditions. Base temperature was 2.7 C and ψb was -1.70, -1.62, and -0.92 MPa at 11, 6, and 4 C, respectively. To reach 50% cumulative seed germination, more days (2 and 11 d) and more TT (16.7 and 74.8 Cd) were needed as temperature decreased from 11 to 4 C and as water potential decreased from 0.0 to -1.2 MPa. Using the HT and HTT scale helped to account for effect of moisture stress. A small fraction of seeds under low temperature and high moisture stress germinated faster (10% at 6 C and -1.2 MPa) compared to more seed germinated at higher temperature and less moisture stress (91% at 11 C and -0.0 MPa). Addition of abscisic acid (10 µM ABA) decreased germination by 16% at both 23 and 6 C, while addition of gibberellic acid (10 µM GA) increased germination by 14% at both 23 and 6 C. Addition of ABA delayed time to 50% germination at 6 C compared to water, with 3 days or 10 Cd. Similarly, addition of GA shortened time to 50% germination at 6 C as it took 8.9 d and 29.3 Cd as compared to 10 d and 33 Cd in water. Kochia seed development was observed visually in greenhouse conditions after controlled and natural pollination. Kochia flower buds changed color from light green to dark brown by 36 days after pollination (DAP). At 36 DAP, buds had seeds enclosed in them but a germination study showed they were not yet viable. Hence, seed germination decreased and seeds needed more time to accumulate enough thermal and hydro unit before germinating as temperature and moisture stresses increased from 11 to 4 C and -0.0 to -1.2 MPa. We conclude that kochia seeds can germinate under very low temperature and moisture potential. Hence, should be controlled very early in the growing season. Phytohormones ABA and GA decrease and increase the germination of seeds, respectively. Kochia takes more than 36 DAP to produce viable seeds. Information on flower bud changes after pollination have implications for both kochia management and research.
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Hofmann, Wallace C., David L. Kittock, B. Brooks Taylor, Peter T. Else, Joel Malcuit, and Carl Michaud. "Emergence and Yield from Six Seed Densities of DPL 90 Cotton." College of Agriculture, University of Arizona (Tucson, AZ), 1985. http://hdl.handle.net/10150/204031.

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Kittock, David L., Wallace C. Hofmann, B. Brooks Taylor, Peter T. Else, Joel Malcuit, and Carl Michaud. "Emergence and Yield from High and Low Quality Upland Cotton Seed." College of Agriculture, University of Arizona (Tucson, AZ), 1985. http://hdl.handle.net/10150/204030.

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Kittock, D. L., W. C. Hofmann, J. Malcuit, P. Else, and C. Michaud. "Emergence and Yield from High and Low Quality Upland Cotton Seed." College of Agriculture, University of Arizona (Tucson, AZ), 1986. http://hdl.handle.net/10150/219704.

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The 1985 and 1986 Cotton Reports have the same publication and P-Series numbers.
Low quality Deltapine (DP) 41 seed had lower germination, lower cold test germination, reduced stand, and reduced lint yield in four tests in Arizona in 1985.
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Welling, P. (Pirjo). "Regeneration by seeds and vegetation structure in alpine plant communities, subarctic Finland." Doctoral thesis, University of Oulu, 2002. http://urn.fi/urn:isbn:951426861X.

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Abstract The aims were to examine the importance of regeneration by seeds, the influence of plant traits and disturbances, and the role of seed-seedling conflicts in regeneration and in the determination of vegetation structure. The study was carried out at in a subarctic alpine area (Kilpisjärvi 69°01'N 20°50E', Finland). Seed bank and seedling densities were high in many plant communities (ranges 99 -1109 viable seeds/m2 and 0.2-227 seedlings/m2, respectively). Effective seedling recruitment is reflected in vegetation as a high proportion of plants with poor or no vegetative reproduction ability. This development may take place in meadows and snowbeds where herbs (e.g. Gnaphalium supinum, Sibbaldia procumbens, Veronica alpina and Viola biflora) are abundant. On the other hand, the low proportion of these plants in heath vegetation reflects ineffective seedling recruitment. Floristic similarities between the consecutive phases in the regeneration pathway may be low despite effective seedling recruitment. Clonality, large and small seed sizes and appendaged diaspores limit the movement of species from phase to phase. Generally, disturbances facilitate effective regeneration by seeds. Grazing promotes species with large seed banks and is therefore one reason for high seed bank densities. Freezing and melting processes negate a negative influence of altitude on seed bank densities in the phase of seedlings. However, if disturbances are severe and continuous and the soil is compact, unstable or dry, disturbances are not beneficial. The same is true if there is a shift in the species composition of seedlings from gaps to closed vegetation. This phenomenon occurred in a rich meadow. Seed-seedling conflicts limit regeneration by seeds in low-herb snowbeds and Ranunculus glacialis-Gymnomitrion snowbeds. Vegetative reproduction and infrequent pulses of seedling recruitment negate an influence of short-term seedling recruitment on the spatial structure of vegetation. Extreme conditions, such as low temperatures, instability of the soil and late snowmelt modify the influence of factors that are important in more moderate conditions. To conclude, all transitions limit regeneration by seeds. However, favourable conditions (e.g. moist conditions in a meadow) partly eliminate the obstacles against seedling emergence. Regeneration by seeds therefore has a major impact on the dynamics and structure of vegetation. In heath vegetation, where bare soils are dry and the moss cover is thick, large seed banks and seed rains do not guarantee effective seedling recruitment. The regeneration process is reduced in the early phases, and plants that reproduce primarily by seeds have a minor role in vegetation. The accumulation of seed banks is effective in these circumstances.
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Hofmann, W. C., D. L. Kittock, J. Malcuit, P. Else, and C. Michaud. "Seedling Emergence and Lint Yield of DP-90 Seed of Different Densities." College of Agriculture, University of Arizona (Tucson, AZ), 1986. http://hdl.handle.net/10150/219729.

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The 1985 and 1986 Cotton Reports have the same publication and P-Series numbers.
Six lots of Deltapine (DP) 90 of different seed densities were planted at three planting rates in four tests in Arizona in 1985. The lowest density seed lot had significantly lower standard germination, cold test germination, field emergence, and lint yield than other seed lots. The highest density seed lot had slightly higher lint yield and field emergence than other lots on an average.
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Books on the topic "Seed emergence"

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Sex seen: The emergence of modern sexuality in America. Berkeley: University of California Press, 1997.

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Sperling, Louise. Emergency seed aid in Kenya: A case study of lessons learned. Cali,Colombia: CIAT, 2001.

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Andersson, Lars. Amounts and characteristics of seeds produced by annual weeds: Influence of herbicides and time of plant emergence. Uppsala, Sweden: Dept. of Crop Production Science, Swedish University of Agricultural Sciences, 1994.

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Watkins, Michael D. Predictable surprises: The disasters you should have seen coming, and how to prevent them. Boston: Harvard Business School Press, 2004.

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Kamaha, Claude. Seed vigor and emergence of six winter wheat cultivars. 1986.

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Tessier, Sylvio. Zero-till furrow opener geometry effects on wheat emergence and seed zone properties. 1988.

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Cromwell, Elizabeth. Seed Provision During and After Emergencies (Good Practice Review). Overseas Development Institute, 1997.

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Ullman, Sharon R. Sex Seen: The Emergence of Modern Sexuality in America. University of California Press, 1998.

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Ullman, Sharon R. Sex Seen: The Emergence of Modern Sexuality in America. University of California Press, 1998.

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Ullman, Sharon R. Sex Seen: The Emergence of Modern Sexuality in America. University of California Press, 1998.

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Book chapters on the topic "Seed emergence"

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Feurtado, J. Allan, and Allison R. Kermode. "Eyeing Emergence: Modified Treatments for Terminating Dormancy of Conifer Seeds." In Seed Dormancy, 53–64. Totowa, NJ: Humana Press, 2011. http://dx.doi.org/10.1007/978-1-61779-231-1_4.

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Crosbie, Julie, Nancy Longnecker, Fleur Davies, and Alan Robson. "Effects of Seed Manganese Concentration on Lupin Emergence." In Plant Nutrition — from Genetic Engineering to Field Practice, 665–68. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1880-4_145.

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Tekrony, D. M., and D. B. Egli. "Relationship between Standard Germination, Accelerated Ageing Germination and Field Emergence in Soyabean." In Basic and Applied Aspects of Seed Biology, 593–600. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5716-2_66.

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Bruggeman, Stephanie A., Sharon A. Clay, Cheryl L. Reese, and C. Gregg Carlson. "Mathematics Associated with Seed Emergence, Plant Population, Stand Uniformity, and Harvest Losses." In Practical Mathematics for Precision Farming, 201–7. Madison, WI, USA: American Society of Agronomy and Soil Science Society of America, 2018. http://dx.doi.org/10.2134/practicalmath2016.0029.

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Thomson, C. J., and T. P. Bolger. "Effects of seed phosphorus concentration on the emergence and growth of subterranean clover (Trifolium subterraneum)." In Plant Nutrition — from Genetic Engineering to Field Practice, 353–56. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1880-4_71.

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Al-Habsi, R., Y. A. Al-Mulla, Y. Charabi, H. Al-Busaidi, and M. Al-Belushi. "Validation and Integration of Wheat Seed Emergence Prediction Model with GIS and Numerical Weather Prediction Models." In Communications in Computer and Information Science, 90–103. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-29589-3_6.

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ten Have, Henk, and Maria do Céu Patrão Neves. "Triage (See Emergency Medicine)." In Dictionary of Global Bioethics, 1015–16. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-54161-3_501.

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ten Have, Henk, and Maria do Céu Patrão Neves. "Emergency Medicine (See Triage)." In Dictionary of Global Bioethics, 457. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-54161-3_224.

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Godfrey, Phoebe. "The Virgin and the seed." In Emergent Possibilities for Global Sustainability, 17–18. Abingdon, Oxon ; New York, NY : Routledge, 2016. Identifiers: LCCN 2016001739| ISBN 9781138830059 (hb) | ISBN 9781315737478 (ebook): Routledge, 2016. http://dx.doi.org/10.4324/9781315737478-4.

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Choi, Chong, Brian Hilton, and Carla Millar. "The Seeds of Business System Diversity in Knowledge and Governance." In Emergent Globalization, 17–27. London: Palgrave Macmillan UK, 2004. http://dx.doi.org/10.1057/9780230287433_2.

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Conference papers on the topic "Seed emergence"

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Dobrowolski, Mark. "Combining seed burial, land imprinting and an artificial soil crust dramatically increases the emergence of broadcast seed." In 13th International Conference on Mine Closure. Australian Centre for Geomechanics, Perth, 2019. http://dx.doi.org/10.36487/acg_rep/1915_53_dobrowolski.

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Gallian, John J., Kelly V. Tindall, David M. Elison, and Dale L. Baker. "The effect of seed treatment and post-emergence insecticides on emergence, phytotoxicity, sugarbeet root maggot damage and root yield." In American Society of Sugar Beet Technologist. ASSBT, 2007. http://dx.doi.org/10.5274/assbt.2007.61.

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Oliveira, L., B. Ortiz, R. Silva, and G. Pate. "99. Variability of the active hydraulic downforce system related to cotton seed depth and emergence." In 13th European Conference on Precision Agriculture. The Netherlands: Wageningen Academic Publishers, 2021. http://dx.doi.org/10.3920/978-90-8686-916-9_99.

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Rostova, E. N. "Brassica nigra in the steppe Crimea." In РАЦИОНАЛЬНОЕ ИСПОЛЬЗОВАНИЕ ПРИРОДНЫХ РЕСУРСОВ В АГРОЦЕНОЗАХ. Federal State Budget Scientific Institution “Research Institute of Agriculture of Crimea”, 2020. http://dx.doi.org/10.33952/2542-0720-15.05.2020.32.

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The expansion of the oilseeds adapted to the soil and climatic conditions of the steppe Crimea will increase the biodiversity on the peninsula and, therefore, maximize the efficient use of its natural potential. Brassica nígra is an insufficiently studied crop under the conditions of the Crimean steppe zone. Therefore, the aim of the research was to study the biological characteristics, seed productivity, and yield quality indicators of some varieties of Brassica nígra in the aforementioned environmental conditions. We studied two varieties of Brassica nígra namely ‘Niagara’ and ‘Smuglyanka’ under rain-fed conditions without any fertilizers. Preceding crop – winter wheat. Cultivation technology – generally accepted. The growing season of ‘Niagara’ variety was 4-7 days shorter than that of ‘Smuglyanka’. This difference was due to the late emergence of seedlings. However, all the following stages of growth and development took place almost simultaneously. In 2017-2019, ‘Niagara’ variety gave the highest yield (0.45 t/ha) exceeding ‘Smuglyanka’ by 0.15 t/ha. The maximum content of fatty oil was in the ‘Niagara’ seeds – 39.3%; ‘Smuglyanka’ contained 24.7%. The main advantage of ‘Niagara’ – high content of essential oil in the seeds (0.96%), which is 3.7 times higher than in the seeds of the ‘Smuglyanka’ variety.
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"SEE EMERGENCE AS A METAKNOWLEDGE - A Way to Reify Emergent Phenomena in Multiagent Simulations?" In 1st International Conference on Agents and Artificial Intelligence. SciTePress - Science and and Technology Publications, 2009. http://dx.doi.org/10.5220/0001803305640569.

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Espinet Coll, Eduardo, Patricia Díaz Galán, Carmen Vila Lolo, José Antonio Gómez Valero, Silvia Bacchiddu, Cristina Quintana, Daniel Irigoyen, and Antonio Juan-Creix Comamala. "ENDOSCOPIA BARIÁTRICA Y METABÓLICA EN EL MANEJO DEL HÍGADO GRASO (EHGNA). ¿UNA OPCIÓN VIABLE Y EMERGENTE? RESULTADOS PRELIMINARES." In 40 Congreso de la Sociedad Española de Endoscopia Digestiva (SEED). Madrid (España): Arán Ediciones, S.L., 2018. http://dx.doi.org/10.17235/reed.supl3vol110.1021/2018.

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Andriopoulou, Foteini, Anastatios Fanariotis, and Theofanis Orphanoudakis. "SEEK: SIP-Based Emergency Embedded Framework Supports Elderly and Disabled to Perform Emergency Calls." In 2018 21st Euromicro Conference on Digital System Design (DSD). IEEE, 2018. http://dx.doi.org/10.1109/dsd.2018.00080.

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de Benito Sanz, Marina, Ana Yaiza Carbajo López, Sergio Bazaga Pérez de Rozas, Francisco Javier García Alonso, Ramón Sánchez-Ocaña Hernández, Javier Tejedor Tejada, Irene Peñas Herrero, Félix García Pajares, Carlos de la Serna Higuera, and Manuel Pérez-Miranda Castillo. "ENTEROANASTOMOSIS TEMPORALES USE-GUIADAS (ETU) COMO FÍSTULA DE ACCESO TERAPÉUTICO (FAT) EN OBSTRUCCIONES BILIARES BENIGNAS (OBB) NO SUBSIDIARIAS DE CPRE: APLICACIÓN EMERGENTE DEL DRENAJE BILIAR-USE-GUIADO (DB-USE)." In 41 Congreso de la Sociedad Española de Endoscopia Digestiva (SEED). Madrid (España): Arán Ediciones, S.L., 2019. http://dx.doi.org/10.17235/reed.supl2vol111.1152/2019.

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Sudarsky, Daniel. "The seeds of cosmic structure as a door to Quantum Gravity Phenomena." In From Quantum to Emergent Gravity: Theory and Phenomenology. Trieste, Italy: Sissa Medialab, 2008. http://dx.doi.org/10.22323/1.043.0038.

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WOOD, LOWELL L., and PHILIP A. ECKHOFF. "GLOBAL ELIMINATION OF INFECTIOUS DISEASE SEEN THROUGH THE PRISM OF THE MANHATTAN PROJECT." In International Seminar on Nuclear War and Planetary Emergencies — 49th Session. WORLD SCIENTIFIC, 2019. http://dx.doi.org/10.1142/9789811205217_0036.

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Reports on the topic "Seed emergence"

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Yang, Xiao-Bing, and Peter Lundeen. Effect of Soybean Seed Treatments on Seed Emergence and Yield. Ames: Iowa State University, Digital Repository, 2002. http://dx.doi.org/10.31274/farmprogressreports-180814-946.

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Lundeen, Peter, and Xiao-Bing Yang. Effect of Seed Soybean Treatments on Seed Emergence and Yield. Ames: Iowa State University, Digital Repository, 2003. http://dx.doi.org/10.31274/farmprogressreports-180814-1118.

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Robertson, Alison, Mauricio Serrano, and Myron Rees. Effects of Commercial Seed Treatments on Soybean Emergence and Yield. Ames: Iowa State University, Digital Repository, 2017. http://dx.doi.org/10.31274/farmprogressreports-180814-1703.

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Kemper, Michael J. Patients Who Leave Naval Medical Center Portsmouth's Emergency Medicine Department Without Being Seen. Fort Belvoir, VA: Defense Technical Information Center, March 2000. http://dx.doi.org/10.21236/ada408430.

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Lines, Lisa M., Florence K. L. Tangka, Sonja Hoover, and Sujha Subramanian. People with Colorectal Cancer in SEER-Medicare: Part D Uptake, Costs, and Outcomes. RTI Press, May 2020. http://dx.doi.org/10.3768/rtipress.2020.rr.0037.2005.

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Limited information exists about enrollment in Part D prescription coverage by Medicare beneficiaries with cancer. Part D coverage may increase access to medicines. This study evaluated patterns of Part D uptake and costs and assessed the effects of coverage on hospitalizations and emergency department (ED) use among people with colorectal cancer (CRC). We analyzed Surveillance, Epidemiology, and End Results (SEER)–Medicare linked data on fee-for-service (FFS) Medicare beneficiaries with at least 36 months of follow-up who were diagnosed with CRC at any point from January 2007 through December 2010, and a matched cohort of beneficiaries without cancer. Dual (Medicare/Medicaid) enrollees were excluded because they are automatically enrolled in Part D. Among beneficiaries with CRC (n=12,774), 39 percent had complete Part D coverage, defined as coverage in the diagnosis year and 2 subsequent years; the rate was 38 percent in the matched comparison cohort (P=.119). Among those with complete Part D coverage, there was no significant difference in annual prescription drug costs between people with CRC ($3,157, 95% confidence interval [CI]: $3,098–$3,216) and without ($3,113, 95% CI: $3,054–$3,172). Among people with CRC, odds of ED use ranged from unchanged to marginally higher for those with no or partial Part D coverage, (adjusted odds ratio: 1.09, 95% CI: 1.00–1.18), compared with those with complete Part D coverage. Lack of continuous Part D coverage was associated with more ED use among Medicare FFS beneficiaries with CRC in 2007–2013. Among people with Part D coverage, prescription drug costs varied little between those with CRC and matched beneficiaries without cancer.
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Devereux, Stephen. Policy Pollination: A Brief History of Social Protection’s Brief History in Africa. Institute of Development Studies (IDS), December 2020. http://dx.doi.org/10.19088/ids.2020.004.

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The relatively recent emergence and sustained rise of social protection as a policy agenda in Africa can be understood as either a nationally owned or ‘donor-driven’ process. While elements of both can be seen in different countries at different times, this paper focuses on the pivotal role of transnational actors, specifically international development agencies, as ‘policy pollinators’ for social protection. These agencies deployed a range of tactics to induce African governments to implement cash transfer programmes and establish social protection systems, including: (1) building the empirical evidence base that cash transfers have positive impacts, for advocacy purposes; (2) financing social protection programmes until governments take over this responsibility; (3) strengthening state capacity to deliver social protection, through technical assistance and training workshops; (4) commissioning and co-authoring national social protection policies; (5) encouraging the domestication of international social protection law into national legislation. Despite these pressures and inducements, some governments have resisted or implemented social protection only partially and reluctantly, either because they are not convinced or because their political interests are not best served by allocating scarce resources to cash transfer programmes. This raises questions about the extent to which the agendas of development agencies are aligned or in conflict with national priorities, and whether social protection programmes and systems would flourish or wither if international support was withdrawn.
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Hunter, Fraser, and Martin Carruthers. Scotland: The Roman Presence. Society of Antiquaries of Scotland, June 2012. http://dx.doi.org/10.9750/scarf.06.2012.104.

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The main recommendations of the panel report can be summarised under five key headings:  Scotland in the Roman world: Research into Roman Scotland requires an appreciation of the wider frontier and Empire-wide perspectives, and Scottish projects must be integrated into these wider, international debates. The rich data set and chronological control that Scotland has to offer can be used to inform broader understandings of the impact of Rome.  Changing worlds: Roman Scotland’s rich data set should be employed to contribute to wider theoretical perspectives on topics such as identity and ethnicity, and how these changed over time. What was the experience of daily life for the various peoples in Roman Scotland and how did interactions between incomers and local communities develop and change over the period in question, and, indeed, at and after its end?  Frontier Life: Questions still remain regarding the disposition and chronology of forts and forces, as well as the logistics of sustaining and supplying an army of conquest and occupation. Sites must be viewed as part of a wider, interlocking set of landscapes, and the study of movement over land and by sea incorporated within this. The Antonine Wall provides a continuing focus of research which would benefit from more comparison with frontier structures and regimes in other areas.  Multiple landscapes: Roman sites need to be seen in a broader landscape context, ‘looking beyond the fort’ and explored as nested and interlocking landscapes. This will allow exploration of frontier life and the changing worlds of the Roman period. To do justice to this resource requires two elements: o Development-control archaeology should look as standard at the hinterland of forts (up to c.1 km from the ‘core’), as sensitive areas and worthy of evaluation; examples such as Inveresk show the density of activity around such nodes. The interiors of camps should be extensively excavated as standard. o Integrated approaches to military landscapes are required, bringing in where appropriate topographical and aerial survey, LIDAR, geophysics, the use of stray and metal-detected finds, as well as fieldwalking and ultimately, excavation.  The Legacy of Rome: How did the longer term influence of the Romans, and their legacy, influence the formation, nature and organisation of the Pictish and other emergent kingdoms?
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2007 United States Animal Health Report. U. S. Dept. of Agriculture, Animal and Plant Health Inspection Service, September 2008. http://dx.doi.org/10.32747/2008.7204066.aphis.

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The report includes updates on new and existing programs, conducted by APHIS’ Veterinary Services (VS) staff, that seek to maintain healthy livestock, poultry, and aquaculture populations. In addition, the report presents information about emergency management efforts, highlights key epidemiological events of 2007, and provides an overview of the Nation’s animal health surveillance activities.
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