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You searched for: Publication Year 1993 Remove constraint Publication Year: 1993 Subject term crop yield Remove constraint Subject term: crop yield
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1. AC Elect summer rape

Author:
Rakow, G.
Source:
Canadian journal of plant science 1993 v.73 no.1 pp. 181-182
ISSN:
0008-4220
Subject:
Brassica napus; breeding methods; cultivars; crop yield; Saskatchewan
DOI:
10.4141/cjps93-027

2. AC Excel summer rape

Author:
Rakow, G.
Source:
Canadian journal of plant science 1993 v.73 no.1 pp. 183-184
ISSN:
0008-4220
Subject:
cultivars; Plenodomus lingam; crop yield; disease resistance; Brassica napus; breeding methods; Saskatchewan
DOI:
10.4141/cjps93-028

3. AC Minto hard red spring wheat

Author:
Townley-Smith, T.F.; Czarnecki, E.M.; Campbell, A.B.; Dyck, P.L.; Samborski, D.J.
Source:
Canadian journal of plant science 1993 v.73 no.4 pp. 1091-1094
ISSN:
0008-4220
Subject:
planting date; spring; agronomic traits; crop yield; Triticum aestivum; disease resistance; high-yielding varieties; Canada
DOI:
10.4141/cjps93-145

4. AC Reed soft white spring wheat

Author:
Sadasivaiah, R.S.; Thomas, J.B.; Conner, R.L.
Source:
Canadian journal of plant science 1993 v.73 no.2 pp. 531-534
ISSN:
0008-4220
Subject:
Triticum aestivum; cultivars; plant breeding; crop yield; genetic resistance; milling quality; baking quality; fungal diseases of plants
DOI:
10.4141/cjps93-072

5. AC Tamor field pea

Author:
Ali-Khan, S.T.
Source:
Canadian journal of plant science 1993 v.73 no.1 pp. 203-204
ISSN:
0008-4220
Subject:
Pisum sativum; cultivars; crop yield; disease resistance; Erysiphe polygoni; Mycosphaerella pinodes; Manitoba
DOI:
10.4141/cjps93-034

6. Accounting for Spatial Yield Variability in Field Experiments Increases Statistical Power

Author:
Peter C. Scharf; Marcus M. Alley
Source:
Agronomy journal 1993 v.85 no.6 pp. 1254-1256
ISSN:
0002-1962
Subject:
application timing; autumn; analysis of variance; soil heterogeneity; crop yield; Triticum aestivum; winter wheat; nitrogen fertilizers; Virginia
Abstract:
... Parametric statistical techniques evaluate treatment significance in field experiments by comparing variability attributed to treatments to variability attributed to random error. In many experiments, a considerable amount of the variability attributed to random error is actually due to large-scale soil variability that cannot be accounted for by blocking. This variability can, in part, be account ...
DOI:
10.2134/agronj1993.00021962008500060029x

7. Accumulation and Redistribution of Dry Matter and Nitrogen by Spring Barley

Author:
Patrick Bulman; Donald L. Smith
Source:
Agronomy journal 1993 v.85 no.6 pp. 1114-1121
ISSN:
0002-1962
Subject:
feed grains; cultivars; application timing; forage crops; nitrogen content; clay soils; Hordeum vulgare; application methods; developmental stages; nutrient uptake; spring; crop yield; protein content; dry matter partitioning; application rate; nitrogen fertilizers; Canada
Abstract:
... The grain protein content of barley (Hordeum vulgare L.) is derived from the retranslocation of vegetative N, as well as from the continued uptake and assimilation of N during grain filling. Field trials were conducted at the E.A. Lods Agronomy Research Centre of McGill University on a a Bearbrook soil (fine, mixed, nonacid, frigid Humaquept) to study the effects of fertilizer N on grain and total ...
DOI:
10.2134/agronj1993.00021962008500060004x

8. Agronomic Evaluations of Maize Genotypes Selected for Extreme Fiber Concentrations

Author:
D. P. Wolf; J. G. Coors; K. A. Albrecht; D. J. Undersander; P. R. Carter
Source:
Crop science 1993 v.33 no.6 pp. 1359-1365
ISSN:
0011-183X
Subject:
Zea mays; hybrids; lodging; in vitro digestibility; selection response; fiber content; corn ears; nutritive value; dry matter accumulation; agronomic traits; crop yield; genotype; inbred lines; corn stover; grains; fiber quality; selection criteria; Wisconsin
Abstract:
... Maize (Zea mays L.) hybrids with good yields of grain and wholeplant dry matter are recommended for silage production. The stover can comprise more than 50% of the whole-plant dry matter and, therefore, can influence dry matter yield and nutritive value of the whole plant. The objective of this study was to determine relationships between agronomic characteristics (stover and whole-plant forage yi ...
DOI:
10.2135/cropsci1993.0011183X003300060047x

9. Agronomic Performance and Economic Value of High-Seed-Protein Soybean

Author:
R. C. Leffel; W. K. Rhodes
Source:
Journal of production agriculture 1993 v.6 no.3 pp. 365-368
ISSN:
0890-8524
Subject:
Glycine max; soybean oil; seeds; crop yield; genotype
Abstract:
... The long-term trend in relative value of soybean [Glycine max (L.) Merr.] protein and oil is toward greater value of protein, thus furthering interests in the potential for increasing seed protein concentration in soybean. If a change in U.S. soybean breeding strategy for improving seed protein levels is required, it should be based on sound economic and biological principles. This research was co ...
DOI:
10.2134/jpa1993.0365

10. Agronomic Performance of Fasciated Soybean Genotypes and Their Isogenic Lines

Author:
Robert C. Leffel; Richard L. Bernard; John O. Yocum
Source:
Crop science 1993 v.33 no.3 pp. 427-432
ISSN:
0011-183X
Subject:
Glycine max; fasciation; seeds; plant density; agronomic traits; crop yield; genotype; inbred lines; recessive genes; seed quality; plant morphology; Illinois; Maryland
Abstract:
... The fasciated soybean [Glycine max (L.) Merr.] is a morphological type caused by the recessive gene f. The original sources of the gene exhibit a broadened and flattened stem, with most of the pods at the stem tip. Fasciation has been suggested as a new gene for soybean improvement. These studies were conducted to determine (i) the agronomic performance of improved fasciated lines and (ii) the ave ...
DOI:
10.2135/cropsci1993.0011183X003300030002x

11. Agronomic Performance of Sulfonylurea-Resistant Transgenic Flue-Cured Tobacco Grown under Field Conditions

Author:
J. E. Brandle; B. L. Miki
Source:
Crop science 1993 v.33 no.4 pp. 847-852
ISSN:
0011-183X
Subject:
genetic resistance; phytotoxicity; transgenic plants; thifensulfuron; genetic variation; chlorsulfuron; crop damage; agronomic traits; crop yield; gene expression; Nicotiana tabacum; herbicide resistance; tribenuron
Abstract:
... Field testing of transgenic crops is an essential step towards commercialization. This study was conducted to assess the agronomic performance of herbicide-resistant transgenic tobacco (Nicotiana tabacum L.) lines relative to untransformed controls and to evaluate their sensitivity to sulfonylurea herbicides in a field situation. Two transgenic flue-cured tobacco lines harboring the csr1-1 gene fo ...
DOI:
10.2135/cropsci1993.0011183X003300040042x

12. Agronomic Performance of Tall versus Short Semidwarf Lines of Spring Wheat

Author:
R. H. Busch; T. L. Rauch
Source:
Crop science 1993 v.33 no.5 pp. 941-943
ISSN:
0011-183X
Subject:
plant breeding; correlated responses; plant characteristics; height; crop yield; Triticum aestivum; grains; dwarf cultivars; selection criteria; Minnesota
Abstract:
... Plant height and grain yield have been positively associated in many studies of wheat (Triticum aestivum L.). The introduction of semidwarf genes changed this relationship by enhancing grain yield as well as reducing plant height. A strategy to select for tall dwarfs was proposed to exploit the positive correlation between yield and plant height observed without semidwarf genes, yet use the advant ...
DOI:
10.2135/cropsci1993.0011183X003300050013x

13. Agronomic Practices that Affect Corn Kernel Characteristics

Author:
M. Ahmadi; W. J. Wiebold; J. E. Beuerlein; D. J. Eckert; J. Schoper
Source:
Agronomy journal 1993 v.85 no.3 pp. 615-619
ISSN:
0002-1962
Subject:
Zea mays; plant density; crop yield; seeds; nitrogen content; hardness; seed quality; sowing date; grains; Ohio
Abstract:
... Agronomic practices affect corn (Zea mays L.) grain yield and may affect physical and chemical characteristics of corn kernels. These characteristics affect feed, food, and industrial uses of corn grain. Four field experiments consisting of planting date and population combinations were conducted to determine the effect of these agronomic practices on grain yield, kernel N concentration, and kerne ...
DOI:
10.2134/agronj1993.00021962008500030018x

14. Agronomic and environmental benefits of water-table management

Author:
Madramootoo, C.A.; Dodds, G.T.; Papadopoulos, A.
Source:
Journal of irrigation and drainage engineering 1993 v.119 no.6 pp. 1052-1065
ISSN:
0733-9437
Subject:
water table; water management; crop yield; nitrates; pollution control; Glycine max; Canada
DOI:
10.1061/(ASCE)0733-9437(1993)119:6(1052)

15. Agronomic sustainability of different farming systems on alfisols in southwestern Nigeria

Author:
Lal, R.
Source:
Journal of sustainable agriculture 1993 v.4 no.2 pp. 33-51
ISSN:
1044-0046
Subject:
farming systems; Alfisols; tillage; cropping systems; land productivity; soil fertility; crop yield; long term experiments; Nigeria
DOI:
10.1300/J064v04n02_05

16. Alfalfa irrigation during drought

Author:
Guitjens, J.C.
Source:
Journal of irrigation and drainage engineering 1993 v.119 no.6 pp. 1092-1098
ISSN:
0733-9437
Subject:
Medicago sativa; crop yield; irrigation; drought
DOI:
10.1061/(ASCE)0733-9437(1993)119:6(1092)

17. Ameliorative effects of ripping and ca-amendments on a Black Solonetz and wheat yield in northern Alberta

Author:
Arshad, M.A.; Coy, G.R.; Gill, K.S.; Malhi, S.S.
Source:
Arid soil research and rehabilitation 1993 v.7 no.4 pp. 307-316
ISSN:
0890-3069
Subject:
electrical conductivity; gypsum; exchangeable calcium; soil depth; crop yield; soil solution; subsoiling; bulk density; Triticum aestivum; land restoration; sodium; soil pH; soil salts; soil density; liming materials; inorganic salts; calcium; exchangeable sodium; exchangeable magnesium; grains; ripping; sodic soils; solubility; inorganic ions; magnesium; B horizons; Alberta
DOI:
10.1080/15324989309381363

18. Analysis of the yield potential and yield components of F1 and F2 hybrids of crosses between wheat (Triticum aestivum L.) and spelt (Triticum spelta L.)

Author:
Winzeler, H.; Schmid, J.E.; Winzeler, M.
Source:
Euphytica 1993 v.74 no.3 pp. 211-218
ISSN:
0014-2336
Subject:
heterosis; plant breeding; hybrids; cultivars; inflorescences; height; seed productivity; length; harvest index; interspecific hybridization; Triticum aestivum subsp. spelta; pollination
DOI:
10.1007/BF00040403

19. Application Placement and Timing of Nitrogen Solution for No-Till Corn

Author:
J. A. Stecker; D. D. Buchholz; R. G. Hanson; N. C. Wollenhaupt; K. A. McVay
Source:
Agronomy journal 1993 v.85 no.3 pp. 645-650
ISSN:
0002-1962
Subject:
Zea mays; no-tillage; urea fertilizers; nutrient solutions; preplanting treatment; soil injection; crop yield; nutrient uptake; nitrogen; leaves; losses from soil; volatilization; application timing; application rate; grains; Missouri
Abstract:
... Fertilizing no-till corn (Zea mays L.) with urea-based N sources requires managing for N losses such as immobilization and NH₃ volatilization. In this study the interactive effects of fertilizer N application time and placement method were evaluated by applying urea ammonium nitrate (UAN) solution to no-till corn. Eight site-years of data were collected from sites in central, northeast, and northw ...
DOI:
10.2134/agronj1993.00021962008500030023x

20. Application of Weed Seedbank Ecology to Low‐Input Crop Management

Author:
Frank Forcella; Kazem Eradat-Oskoui; Steven W. Wagner
Source:
Ecological applications 1993 v.3 no.1 pp. 74-83
ISSN:
1051-0761
Subject:
Amaranthus retroflexus; Chenopodium album; Glycine max; Zea mays; annual weeds; buried seeds; chemical control; corn; crop management; crop yield; crops; ecology; environmental factors; herbicides; mechanical weed control; models; seed dormancy; seedbeds; seedling emergence; seedlings; soil temperature; soil water; soybeans; tillage; Corn Belt region; Minnesota
Abstract:
... Pesticide use in the United States is concentrated in the Corn Belt, mainly in the form of herbicides on corn (Zea mays) and soybean (Glycine max). If this chemical load to the environment is to be reduced, without appreciably affecting crop yields, an intimate understanding of weed ecology is necessary. For annual weeds in the U.S. Corn Belt, critical ecological information includes seedbank dens ...
DOI:
10.2307/1941793