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1. Beet curly top virus, insecticides and plant resistance

Author:
Kaffka, S.R.; Lewellen, R.T.; Wintermantel, W.M.
Source:
1st Joint IIRB-ASSBT Congress : 27 Feb.-1 Mar, 2003 : San Antonio, Texas, USA = 1er Congrès conjoint IIRB-ASSBT = 1. IIRB-ASSBT Gemeinschaftskongress pp. -
Subject:
Beta vulgaris; sugar beet; Beet curly top virus; plant diseases and disorders; disease transmission; insect vectors; Circulifer tenellus; vector control; imidacloprid; phorate; pesticide application; seed dressings; soil treatment; application rate; disease resistance; cultivars; variety trials; planting date; crop yield; California
Handle:
10113/12512

2. Developing Switchgrass as a Bioenergy Crop

Author:
McLaughlin, S.; Bouton, J.; Bransby, D.; Conger, B; Ocumpaugh, W.; Parrish, D.; Taliaferro, C.; Vogel, K.; Wullschleger, S.
Source:
Perspectives on new crops and new uses / edited by Jules Janick pp. -
Subject:
energy crops; carbon; research; land use; Panicum virgatum; energy content; combustion; yields; harvest date; cultivars; warm season grasses; plant nutrition; genetic improvement; forage grasses; plant physiology; biomass; ethanol; crop prices; plant breeding; nitrogen; plant propagation; ash content; molecular genetics; biofuels
Handle:
10113/44929

3. Developing switchgrass into a biomass fuel crop for the midwestern USA

Author:
Vogel, K.P.; Masters, R.A.
Source:
BioEnergy '98 : Expanding BioEnergy Partnerships ; October 4-8, 1998, Madison, WI pp. -
Subject:
Panicum virgatum; cultivars; hemicellulose; agricultural soils; weed control; plant breeding; plant growth; energy crops; cellulose; crop yield; mycorrhizae; biomass; Midwestern United States
Abstract:
... USDA and University of Nebraska research on switchgrass was expanded in 1990 to include development of switchgrass into a biomass fuel crop. Initial research evaluated all available cultivars and elite strains at three Midwestern locations and identified cultivars and strains that had the most potential for use as biofuel crops. The highest yielding strains produced over 14,000 kg/ha biomass per y ...
Handle:
10113/45571

4. Development of short-wavelength near-infrared spectral imaging for grain color classification

Author:
Archibald, Douglas D.; Thai, Chi N.; Dowell, Floyd E.
Source:
Precision agriculture and biological quality : 3-4 November 1999, Boston, Massachusetts / George E. Meyer, James A. DeShazer, chairs/editors ; sponsored and published by SPIE--the International Society for Optical Engineering pp. -
Subject:
cultivars; image analysis; classification; hard white wheat; hard red spring wheat; near-infrared spectroscopy; color; winter wheat
Abstract:
... Color class of wheat is an important attribute for the identification of cultivars and the marketing of wheat, but is not always easy to measure in the visible spectral range because of variation in vitreosity and surface structure of the kernels. This work examines whether short-wavelength near infrared (SW-NIR) imaging in the range 632 - 1098 nm can be used to distinguish different cultivars. Th ...
Handle:
10113/25632

5. Field resistance expressed when the Pi-ta gene is compromised by Magnaporthe oryzae

Author:
Lee, Fleet N.; Cartwright, R.D.; Jia, Yulin; Correll, J.C.
Source:
Advances in genetics, genomics and control of rice blast disease / Guo-Liang Wang, Barbara Valent, editors pp. -
Subject:
Oryza sativa; rice; disease resistance; blast disease; Magnaporthe grisea; host-pathogen relationships; genes; pathotypes; cultivars
Handle:
10113/33619

6. Germplasm and cultivar development

Author:
Casler, M.D.; Pedersen, J.F.; Eizenga, G.C.; Stratton, S.D.
Source:
Cool-season forage grasses pp. -
Subject:
cool season grasses; plant breeding; germplasm; plant genetic resources; cultivars; forage grasses; genetic improvement
Handle:
10113/36257

7. Germplasm availability, species boundaries, and interrelationships of wild and cultivated potatoes (solanum sect. Petota)

Author:
Spooner, D.M.
Source:
Proceedings of the VI Congreso Latinoamericano de Botánica, Mar del Plata, Argentina, 2-8 October 1994 / editors of the proceedings, Renée Fortunato & Nélida Bacigalupo ; specialist editors, Juan C. Gamerro & Irma Gamundí pp. -
Subject:
geographical distribution; cultivars; genetic variation; plant morphology; germplasm conservation; Solanum; wild relatives; plant taxonomy; United States; Central America; South America
Abstract:
... Solanum sect. Petota, the potato and its wild and cultivated relatives, contains 232 species, according to the latest taxonomic interpretation. Seven of these species are cultivated, and the rest are wild. The group is distributed from the southwestern United States to south central Chile, with a concentration of species in the Andes of Peru and Bolivia. There is much morphological and physiologic ...
Handle:
10113/3307

8. Health aspects and antiaflatoxigenic activity of phytochemicals in tree nuts

Author:
Molyneux, Russell J.; Mahoney, Noreen; Kim, Jong H.; Campbell, Bruce C.
Source:
Tree nuts : composition, phytochemicals, and health effects / edited by Cesarettin Alasalvar, Fereidoon Shahidi pp. -
Subject:
food spoilage; chemotypes; medicinal plants; structure-activity relationships; walnuts; oxidative stress; postharvest diseases; secondary metabolites; phytoalexins; antifungal properties; gallic acid; cultivars; phytochemicals; aflatoxins; varietal resistance; ellagic acid; tannins; hydrolysis; antioxidant activity; antioxidants; molds (fungi); stress tolerance; toxigenic strains; agronomic traits
Handle:
10113/34082

9. Indiangrass

Author:
Mitchell, Robert; Vogel, Kenneth P.
Source:
Warm-season (C4) grasses / co-editors, Lowell E. Moser, Byron L. Burson, Lynn E. Sollenberger ; plant illustrations, Kelly Rhodes Hays pp. -
Subject:
atrazine; plant taxonomy; grasslands; history; hay; pesticide resistance; Sorghastrum; geographical distribution; cultivars; plant growth; C4 plants; warm season grasses; plant nutrition; chromosome number; forage grasses; seed germination; plant breeding; nutritive value; ecological restoration; genetic variation; seed productivity; plant morphology; Sorghum (Poaceae)
Handle:
10113/44931

10. Molecular and biochemical characterization of puroindoline A and B alleles in Chinese improved cultivars and landraces

Author:
He, Z.H.; Chen, F.; Xia, X.C.; Xia, L.Q.; Zhang, X.Y.; Lillemo, M.; Morris, C.F.
Source:
Wheat production in stressed environments : proceedings of the 7th International Wheat Conference, 27 November - 2 December 2005, Mar del Plata, Argentina / edited by H.T. Buck, J.E. Nisi, and N. Salomón pp. -
Subject:
cultivars; alleles; seeds; landraces; evolution; hardness; wheat; amino acid sequences; agronomic traits; Triticum aestivum; nucleotide sequences; agricultural history; China
Abstract:
... Kernel hardness conditioned by puroindoline genes has a profound effect on milling, baking and end-use quality of bread wheat. In this study, 251 current cultivars and advanced lines, 166 historical cultivars, and 219 landraces from China were investigated for their kernel hardness and puroindoline alleles using molecular and biochemical markers. The frequencies of soft, mixed and hard genotypes w ...
Handle:
10113/7054

11. Performance of cotton cultivars and strains in South Carolina - 1998

Author:
May, O.L.; Sullivan, M.J.; Barefield, D.K. Jr.; Robinson, D.M.; Veasey, G.M.
Source:
Performance of field crops in South Carolina section 3, cotton / O.L. May ... [et al.] pp. -
Subject:
cotton; variety trials; cultivars; Gossypium hirsutum; geographical variation; agronomic traits; fiber quality; lint yield; South Carolina
Handle:
10113/47655

12. Plant genetic resources for food and agriculture in situ and ex situ: where are the genes of importance for food security likely to come from?

Author:
Spooner, D.M.
Source:
Exploring options for the list approach : proceedings of international workshop : inter-dependence and food security : which list of PGRFA for the future multilateral system? : Florence, 1-3 October 1998 / [edited by M. Broggio] pp. -
Subject:
food crops; germplasm conservation; cultivars; wild relatives; genetic variation; genetic drift; international agreements; food safety; gene banks; United States
Handle:
10113/3239

13. Pome fruits

Author:
Bai, Jinhe; Prange, Robert K.; Toivonen, Peter M.A.
Source:
Modified and controlled atmospheres for the storage, transportation, and packaging of horticultural commodities / edited by Elhadi M. Yahia pp. -
Subject:
ethylene; shelf life; volatile organic compounds; postharvest physiology; water vapor; carbon dioxide; Pyrus communis; modified atmosphere packaging; food storage; storage temperature; pears; mature plants; fruit quality; Malus domestica; edible films; oxygen; cultivars; plant development; postharvest treatment; coatings; relative humidity; storage time; controlled atmosphere storage; long term effects; ethylene production; cell respiration; preharvest treatment; ripening; chemical constituents of plants
Handle:
10113/33517

14. Relationship of watermelon genotype and ploidy to incidence of yellow vine disease

Author:
Pair, S.D.; Bruton, B.D.
Source:
Cucurbitaceae '98 : evaluation and enhancement of Cucurbit germplasm : 30 November-4 December 1998, Pacific Grove, Calif. / James D. McCreight, editor pp. -
Subject:
plant pathogenic bacteria; cultivars; watermelons; diploidy; decline; triploidy; Citrullus lanatus; genotype; disease resistance; yellow vine disease
Handle:
10113/29237

15. Spread of a highly virulent race of Puccinia graminis tritici in Eastern Africa: challenges and opportunities

Author:
Singh, R.P.; Kinyua, M.G.; Wanyera, R.; Njau, P.; Jin, Y.; Huerta-Espino, J.
Source:
Wheat production in stressed environments : proceedings of the 7th International Wheat Conference, 27 November - 2 December 2005, Mar del Plata, Argentina / edited by H.T. Buck, J.E. Nisi, and N. Salomón pp. -
Subject:
rust diseases; cultivars; plant breeding; genetic resistance; Puccinia graminis; wheat; Triticum aestivum; plant pathogenic fungi; disease resistance; progeny testing; genetic variation; pathotypes; virulence; Kenya
Handle:
10113/7053

16. State of the art technology for developing cultivars resistant to insects

Author:
Foster, John E.; Subramanian, Ramnath; Pedersen, Jeffrey F.; Clark, Thomas L.; Honecker, S. Catherine
Source:
Proceedings of the XX Congresso Nacional de Milho e Sorgo Goiania, Brazil, July 27-29, 1994 pp. -
Subject:
genetic transformation; cultivars; plant breeding; insect pests; greenhouses; transgenic plants; Agrobacterium radiobacter; plant pests; field experimentation; germplasm screening; pest resistance; crops
Handle:
10113/44233

17. Switchgrass

Author:
Vogel, Kenneth P.
Source:
Warm-season (C4) grasses / co-editors, Lowell E. Moser, Byron L. Burson, Lynn E. Sollenberger ; plant illustrations, Kelly Rhodes Hays pp. -
Subject:
energy crops; plant taxonomy; pest resistance; grasslands; Panicum virgatum; history; disease resistance; range management; plant growth; cultivars; C4 plants; warm season grasses; seeds; plant nutrition; chromosome number; plant characteristics; biomass; crop management; plant breeding; rangelands; nutritive value; ecological restoration; genetic variation
Handle:
10113/44932

18. Use of mediterranean germplasm for more efficient grasses and legumes in the southeastern USA

Author:
Hoveland, C.S.; Pedersen, J.F.
Source:
Grasslands facing the energy crisis : proceedings of the 11th general meeting of the European Grassland Federation, Troia, Portugal 4-9 May 1986 / ed. by F.M. Borda and J.M. Abreu pp. -
Subject:
Festuca arundinacea; Phalaris aquatica; Lotus corniculatus; Trifolium vesiculosum; germplasm; winter hardiness; cool season grasses; forage legumes; provenance; cultivars; winter; forage production; crop yield; Mediterranean region; United States
Handle:
10113/47031

19. Utilization and performance in wheat of yellow dwarf virus resistance transferred from Thinopyrum intermedium

Author:
Ohm, H.; Anderson, J.
Source:
Wheat production in stressed environments : proceedings of the 7th International Wheat Conference, 27 November - 2 December 2005, Mar del Plata, Argentina / edited by H.T. Buck, J.E. Nisi, and N. Salomón pp. -
Subject:
Triticum aestivum; wheat; Barley yellow dwarf virus; Cereal yellow dwarf virus-RPV; pathogenicity; disease resistance; plant breeding; introgression; gene transfer; Thinopyrum intermedium subsp. intermedium; transgenic plants; progeny testing; cultivars; genetic resistance; chromosome translocation
Abstract:
... Barley yellow dwarf virus (BYDV - previously PAV) and cereal yellow dwarf virus (CYDV - previously RPV) which cause the yellow dwarf (YD) disease are serious pathogens of the small cereal grain crops like barley, wheat, oat, and rye in many cereal-growing areas of the world. Highly effective resistance to yellow dwarf viruses was introgressed into wheat (Triticum aestivum) from Thinopyrum intermed ...
Handle:
10113/10062

20. Varieties of plantains and bananas cultivated in Seychelles

Author:
Dupont, P.R.
Source:
Bulletin of miscellaneous information 1913 no.6 pp. 229-231
Subject:
Musa paradisiaca; cultivars; plant genetics; plantains (fruit); Musa acuminata; bananas
Handle:
10113/12089

21. A new wheat for Kansas

Author:
Jardine, W.M.
Source:
Agronomy journal 1917 v.9 no.6 pp. 257-266
ISSN:
0002-1962
Subject:
wheat; agronomic traits; crop yield; high-yielding varieties; Triticum; Kansas
DOI:
10.2134/agronj1917.00021962000900060001x

22. The inheritance of resistance to bunt or stinking smut or wheat

Author:
Gaines, E.F.
Source:
Agronomy journal 1920 v.12 no.4 pp. 124-132
ISSN:
0002-1962
Subject:
cultivars; plant breeding; Tilletia tritici; fungal diseases of plants; Triticum aestivum; disease resistance; inheritance (genetics)
DOI:
10.2134/agronj1920.00021962001200040002x

23. Climate and wheat yields at College Park, MD

Author:
Sando, W.J.
Source:
Agronomy journal 1923 v.15 no.10 pp. 400-408
ISSN:
0002-1962
Subject:
Triticum aestivum; winter wheat; cultivars; environmental factors; crop yield; temperature; rain; Maryland
Abstract:
... A significant negative correlation has been found to exist between rainfall and the corrected yields of four varieties of wheat grown at the Maryland Agricultural Experiment Station. In general, yields above the normal are associated with sub-normal rainfall for the months of March and May. A study of other varieties of wheat may show differences in this respect. Though the 12-year period is too s ...
DOI:
10.2134/agronj1923.00021962001500100003x

24. Hard grain texture as a basis of selection for improving the quality of Early Baart wheat

Author:
Bryan, W.E.; Pressley, E.H.
Source:
Agronomy journal 1925 v.17 no.7 pp. 440-443
ISSN:
0002-1962
Subject:
Triticum aestivum; wheat flour; cultivars; plant breeding; crop quality; Arizona
DOI:
10.2134/agronj1925.00021962001700070010x

25. The effect of soil structure on the character of alfalfa root-systems

Author:
Carlson, F.A.
Source:
Agronomy journal 1925 v.17 no.6 pp. 336-345
ISSN:
0002-1962
Subject:
Medicago sativa; cultivars; root systems; plant development; soil structure
DOI:
10.2134/agronj1925.00021962001700060006x

26. The effectiveness of seed corn selection based on ear characters

Author:
Winter, F.L.
Source:
Agronomy journal 1925 v.17 no.2 pp. 113-118
ISSN:
0002-1962
Subject:
Zea mays; cultivars; seeds; crop yield; plant morphology; plant breeding; Illinois
Abstract:
... Seven hundred ears of Illinois Non-Pedigree corn were used in an experiment to determine the effectiveness of selecting seed corn by means of ear characters as demonstrated by the germination test. Results show that ears selected or discarded for seed on the basis of their physical characters are significantly different in viability of seeds, vigor of seedlings, and amounts of disease (with the ex ...
DOI:
10.2134/agronj1925.00021962001700020012x

27. Relation of soil moisture content to resistance of wheat seedlings to low temperatures

Author:
Klages, K.H.
Source:
Agronomy journal 1926 v.18 no.3 pp. 184-193
ISSN:
0002-1962
Subject:
Triticum aestivum; cultivars; seedlings; soil water content; temperature; cold tolerance
Abstract:
... Under extreme depressions of temperature, such as occurred in these investigations, low soil moisture, due to its retardation of the life processes of plants, exerts a protective influence during the first part of the exposure. After killing once sets in on the low moisture soil it progresses rapidly. Due to the greater activity of the plants grown on the higher moisture soils killing on them begi ...
DOI:
10.2134/agronj1926.00021962001800030002x

28. Distribution and maintenance of improved varieties of small grains in Canada

Author:
Newman, L.H.
Source:
Agronomy journal 1927 v.19 no.8 pp. 743-749
ISSN:
0002-1962
Subject:
cultivars; Triticum aestivum; seeds; Canada
DOI:
10.2134/agronj1927.00021962001900080005x

29. Barley varieties registered. II

Author:
Harlan, H.V.; Wiggans, R.G.; Newman, L.H.
Source:
Agronomy journal 1928 v.20 no.12 pp. 1326-1328
ISSN:
0002-1962
Subject:
barley; cultivars
DOI:
10.2134/agronj1928.00021962002000120009x

30. Comparative winterhardiness of species and varieties of vetches and peas in relation to their yielding ability

Author:
Klages, K.H.
Source:
Agronomy journal 1928 v.20 no.9 pp. 982-987
ISSN:
0002-1962
Subject:
Vicia; peas; winter hardiness; crop yield; cultivars
Abstract:
... Of 20 species and varieties of vetches and peas grown at the Oklahoma Agricultural Experiment Station only two species of vetch, hairy (Vicia villosa) and woolly-podded (V. dasycarpa), and one variety of peas, the Austrian field pea (Pisum sativum), were found to survive winter conditions without showing a perceptible percentage of winterkilling. Hungarian vetch (V. pannonica) showed a fair degree ...
DOI:
10.2134/agronj1928.00021962002000090010x

31. Correcting yields in rod-row trials with the aid of the regression equation

Author:
Griffee, F.
Source:
Agronomy journal 1928 v.20 no.6 pp. 569-581
ISSN:
0002-1962
Subject:
winter wheat; crop yield; cultivars
Abstract:
... 1. Correlations were calculated in rod-row trials according to the method devised by Hayes. The correlations varied from 0.611 +/- .019 for plats 10 feet apart to 0.707 +/- .015 for rows 3 feet apart. 2. Corrected yields of the varieties were calculated by means of the regression equations and the check plats. The ranking of varieties was changed by correction. In the group of wheats yielding 7.0 ...
DOI:
10.2134/agronj1928.00021962002000060004x

32. Immunity of hope wheat from black stem rust inherited as a dominant charcter

Author:
Clark, J.A.; Ausemus, E.R.
Source:
Agronomy journal 1928 v.20 no.2 pp. 152-159
ISSN:
0002-1962
Subject:
wheat; rust diseases; immunity; cultivars; inheritance (genetics)
DOI:
10.2134/agronj1928.00021962002000020008x

33. Inheritance of awns in crosses involving sevier and federation wheats

Author:
Stewart, G.
Source:
Agronomy journal 1928 v.20 no.2 pp. 160-170
ISSN:
0002-1962
Subject:
crossing; wheat; cultivars; inheritance (genetics)
Abstract:
... 1. Awn inheritance has during the last few years been found to be much too complex in several crosses to be explained by the difference of a single factor. Several cases of two independent factors are reported. A very recent study of a Sevier X Federation cross by the writer indicated two linked factors for awns. 2. Two other crosses are studied in this paper for awn segregations, namely, a pure l ...
DOI:
10.2134/agronj1928.00021962002000020009x

34. Natural crossing in barley

Author:
Stevenson, F.J.
Source:
Agronomy journal 1928 v.20 no.11 pp. 1193-1196
ISSN:
0002-1962
Subject:
barley; crossing; cultivars
Abstract:
... Three white-hulled varieties of barley were grown between black-hulled varieties of the same type, habit of growth, and date of heading for the three years 1924, 1925, and 1926. One of these varieties, Hanna, was two-rowed and two others, Consul and Oderbrucker, were six-rowed. Manchuria, Minn. No. 184, an awned six-rowed variety, was grown between two rows of Nepal, a hooded six-rowed sort. 2. Na ...
DOI:
10.2134/agronj1928.00021962002000110007x

35. Registration of improved wheat varieties. III

Author:
Clark, J.A.; Parker, J.H.; Waldron, L.R.
Source:
Agronomy journal 1928 v.20 no.12 pp. 1318-1322
ISSN:
0002-1962
Subject:
wheat; cultivars
DOI:
10.2134/agronj1928.00021962002000120007x

36. Registration of varieties and strains of oats. III

Author:
Stanton, T.R.; Love, H.H.; Gaines, E.F.
Source:
Agronomy journal 1928 v.20 no.12 pp. 1323-1325
ISSN:
0002-1962
Subject:
oats; cultivars; strains
DOI:
10.2134/agronj1928.00021962002000120008x

37. Transgressive and normal segregations in a cross of Marquis X Federation wheats

Author:
Stewart, G.; Tingey, D.C.
Source:
Agronomy journal 1928 v.20 no.6 pp. 620-634
ISSN:
0002-1962
Subject:
crossing; wheat; cultivars
Abstract:
... In a wheat cross between a pure line of Marquis and a pure line of Federation, both parents were observed to be awnless, though both have short tip awns, Marquis having somewhat longer ones. Marquis has white glumes and red kernels. Both are homozygous for normal height. The F1 plants were awnless, or nearly so, bronze-glumed, red-kerneled, and normal in height. Two families of F2 plants consisted ...
DOI:
10.2134/agronj1928.00021962002000060007x

38. Variability in staple length of some commercial varieties of cotton

Author:
Rea, H.E.
Source:
Agronomy journal 1928 v.20 no.7 pp. 703-709
ISSN:
0002-1962
Subject:
cotton; cultivars
Abstract:
... The results of the data taken on the individual stalks within each of the 16 varieties grown in 1925 and 1926 justify the following conclusions: 1. A majority of the commonly grown commercial varieties of cotton, as judged by those involved in this study, possess a high degree of variability in staple length. These results emphasize the importance of giving more consideration and attention to unif ...
DOI:
10.2134/agronj1928.00021962002000070004x

39. The genetics of Sonora wheat

Author:
Love, H.H.; Craig, W.J.
Source:
Agronomy journal 1928 v.20 no.3 pp. 307
ISSN:
0002-1962
Subject:
wheat; cultivars; genetics
DOI:
10.2134/agronj1928.00021962002000030014x

40. The improvement, distribution, and maintenance of farm crops as discussd from the experiment station viewpoint

Author:
Kiesselbach, T.A.
Source:
Agronomy journal 1928 v.20 no.1 pp. 1-14
ISSN:
0002-1962
Subject:
introduced plants; crop production; cultivars; United States
DOI:
10.2134/agronj1928.00021962002000010001x

41. The prevalence of mixtures in Marquis wheat grown in central Montana in 1926

Author:
Quisenberry, K.S.; Clark, J.A.; Bayles, B.B.
Source:
Agronomy journal 1928 v.20 no.10 pp. 1055-1063
ISSN:
0002-1962
Subject:
wheat; cultivars; genotype mixtures; Montana
Abstract:
... 1. Samples of Marquis wheat were obtained from 102 fields in central Montana and 79, or 77.5%, showed white kernels. In the 77 samples which proved to be chiefly spring wheat, 0.6% of the kernels were white. 2. Random samples of red kernels were taken from these same fields and when grown showed an average mixture of 8.8%, making a total mixture of 9.4% for the samples studied. 3. When the white k ...
DOI:
10.2134/agronj1928.00021962002000100005x

42. A wheat variety survey in Washington

Author:
Schafer, E.G.; Gaines, E.F.
Source:
Agronomy journal 1928 v.20 no.2 pp. 171-181
ISSN:
0002-1962
Subject:
surveys; cultivars; wheat
DOI:
10.2134/agronj1928.00021962002000020010x

43. Barley variety tests at a high-altitude ranch near Obsidian, Idaho

Author:
Harlan, H.V.; Shaw, F.W.
Source:
Agronomy journal 1929 v.21 no.4 pp. 439-443
ISSN:
0002-1962
Subject:
Hordeum vulgare; variety trials; cultivars; Idaho
DOI:
10.2134/agronj1929.00021962002100040010x

44. Cooperative rod-row wheat trials in North Dakota for 1928

Author:
Waldron, L.R.
Source:
Agronomy journal 1929 v.21 no.3 pp. 287-294
ISSN:
0002-1962
Subject:
rust diseases; cultivars; crop yield; Triticum aestivum; statistical analysis; genetic variation; North Dakota
Abstract:
... In the 1928 rod-row wheat trials conducted by volunteer cooperators, evidence is presented by correlation data that the results are reasonably consistent. The probable errors averaged 6.36%, and 23 of them are below 6%. In the state-wide comparison, Ceres yielded significantly more than the other (common) wheats. In regional comparisons, Mindum yielded significantly more than Ceres, while the aver ...
DOI:
10.2134/agronj1929.00021962002100030004x

45. Effect of date of seeding on yield, lodging, maturity, and nitrogen content in cereal varietal experiments

Author:
Florell, V.H.
Source:
Agronomy journal 1929 v.21 no.7 pp. 725-731
ISSN:
0002-1962
Subject:
Triticum aestivum; Hordeum vulgare; Avena sativa; variety trials; cultivars; crop yield; seasonal variation; sowing date; California
DOI:
10.2134/agronj1929.00021962002100070003x

46. Effects of dehulling seed and of date of seeding on germination and smut infection in oats

Author:
Bayles, B.B.; Coffman, F.A.
Source:
Agronomy journal 1929 v.21 no.1 pp. 41-51
ISSN:
0002-1962
Subject:
Avena (Poaceae); Ustilago segetum var. avenae; seed germination; pathogenicity; cultivars; disease resistance; sowing date; Oregon
Abstract:
... 1. A study of the effects of dehulling the seed and of date of seeding on germination, infection by covered smut, and percentage of plants reaching maturity was made at Moro, Oreg., in 1925 and 1926. 2. Dehulling reduced germination of uninoculated seed 5.8% and of inoculated seed 10.6% in 1926. 3. When seed was dehulled but not inoculated, 6.3% of the plants failed to reach maturity as compared w ...
DOI:
10.2134/agronj1929.00021962002100010005x

47. Some factors affecting the nicotine content

Author:
Bacon, C.W.
Source:
Agronomy journal 1929 v.21 no.2 pp. 159-167
ISSN:
0002-1962
Subject:
Nicotiana tabacum; nicotine; cultivars; quantitative analysis; chemical constituents of plants
DOI:
10.2134/agronj1929.00021962002100020008x

48. Varietal and seasonal variation of "motes" in upland cotton

Author:
Rea, H.E.
Source:
Agronomy journal 1929 v.21 no.4 pp. 481-486
ISSN:
0002-1962
Subject:
Gossypium hirsutum; abnormal development; seasonal variation; cultivars; Texas
Abstract:
... The results of the study on the percentage of the motes made in 16 varieties grown in 1925 and 1926 justify the following conclusions: 1. The occurrence of motes in the commercial varieties of cotton studied was very common. In a study embracing two years, 1,323 plants were examined and only 2 failed to have any motes. 2. The percentage of motes occurring in the commercial varieties of cotton stud ...
DOI:
10.2134/agronj1929.00021962002100040013x

49. The contrast in response of kafir and milo to variations in spacing

Author:
Karper, R.E.
Source:
Agronomy journal 1929 v.21 no.3 pp. 344-354
ISSN:
0002-1962
Subject:
cultivars; row spacing; plant density; crop yield; genetic variation; Sorghum (Poaceae)
Abstract:
... 1. Milo has yielded, as an average for 10 years, approximately 21% more grain to the acre, when planted from 18 to 36 inches apart in the row than when planted 3 to 9 inches apart. 2. Kafir, for the same period, as yielded 13% more grain when planted 3 to 9 inches apart in the row than when planted over 18 inches apart. 3. The difference between milo and kafir in response to spacing is accounted f ...
DOI:
10.2134/agronj1929.00021962002100030008x

50. The occurrence of strains resistant to leaf rust in certain varieties of wheat

Author:
Johnston, C.O.
Source:
Agronomy journal 1929 v.21 no.5 pp. 568-573
ISSN:
0002-1962
Subject:
Triticum aestivum; Puccinia recondita; rust diseases; genetic resistance; plant breeding; cultivars
Abstract:
... In studies on the reaction of varieties of wheat to leaf rust, P. triticina, p. f. 9, in the greenhouse at Manhattan, Kan., 28 out of about 200 varieties were found to contain resistant strains. With but few exceptions the resistant strains resembled the varieties from which they came in their general morphological characters. Some of them varied slightly from the parent varieties in one or more c ...
DOI:
10.2134/agronj1929.00021962002100050007x