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Investigations on yield in the cereals1. I

Published online by Cambridge University Press:  27 March 2009

F. L. Engledow  and
S. M. Wadham
F. L. Engledow
Affiliation:
Plant Breeding Institute, Cambridge
S. M. Wadham
Affiliation:
Botany School, Cambridge.
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Extract

The results of a yield trial may be usefully indicative; they can never be decisive. Geographical differences of soil and climate and seasonal fluctuations, limit the applicability of results to the locality and the year of the experiment. No more can be achieved than to ensure that the data accumulated in the prescribed circumstances have as high as possible a degree- of statistical probability. For this, there must be adequate precautions against a variety of factors predisposing to error. These factors may be broadly classified as follows:

(a) Soil differences within the locality, i.e. major-scale differences as, for example, between the two ends of a 10-acre field.

(b) Soil differences within small portions of the test area, e.g. as between contiguous areas of 1 square ft. or even as between the areas occupied by neighbouring single plants.

(c) Differences in the seeds sown.

(d) Damage by wire-worm, etc., resulting in the killing off of some plants especially in the very early stages of growth.

(e) Irregularities in light intensity and inter-plant competition owing to irregular seed rate or depth of sowing, etc.

(f) Losses during harvesting.

(g) Irregularities in the water content of the harvested material.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 14 , Issue 3 , July 1924 , pp. 325 - 345
Copyright
Copyright © Cambridge University Press 1924

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References

BIBLIOGRAPHY

(1)Engledow, F. L. and Shelton, J. P. (1922). “An Investigation upon Certain Metrical Attributes of Wheat Plants.” Journ. Agric. Sci. 12.CrossRefGoogle Scholar
(2)Kulkarni, M. L. “Experiments in Planting Sugar-Cane Sets with a Single Eye-Bud and Pot Experiments with other Seeds placed in Different Positions while Planting.” Agric. Journ. India, 13.Google Scholar
(3)Kulkarni, M. L. “Further Experiments and Improvements in the Method of Planting Sugar-Cane and Further Study in the Position of Seed in the Ground while Planting.” Agric. Journ. India, 14, 5.Google Scholar
(4)Kottur, G. L. “Position of Seed in Cotton.” Agric. Journ. India, 15, 1.Google Scholar
(5)Percival, John. The Wheat Plant. A Monograph. Publ. 1921. Duckworth, London.Google Scholar
(6)Rotmistrov, V. (1909). Root Systems of Cultivated Plants of One Year's Growth. Min. of Lab. and Agr., Department of Agriculture, Odessa.Google Scholar
(7)Hays, W. M. and Boss, A. (1899). Minnesota Wheat Breeding. Minnesota.Google Scholar
(8)King, F. H. “Natural Distribution of Roots in Field Soils.” Wisconsin Sta. Report for 1892.Google Scholar
(9)Weaver, J. E. (1919). The Ecological Relations of Roots. Carnegie Inst, of Washington, Pub. No. 286.CrossRefGoogle Scholar
(10)Howard, A. and Howard Gabrielle, L. C.The Economic Significance of the Root Development of Agricultural Crops.Google Scholar
(11)Harlan, H. V. (1914). “Some Distinctions in our Cultivated Barleys with Reference to their Use in Plant Breeding.” Bull, of U. S. Dep. of Agric. No. 137.Google Scholar
(12)Johannsen, W. “Über die Abänderungen der Gerste mit besonderer Rücksicht auf das Verhältnis des Gewichtes der Körner zu ihrem Gehalt an Stickstoff-haltigen Substanzen.” Meddelelser fra Carlsberg Laborat. T. 4. [Abstract, Brew. Trade Rev. 1899 and Journ. Inst. Brew. 1899, 5.]Google Scholar
(13)Hume, A. N., Champlin, M., and Fowles, M. (1919). “The Influence of Length of Wheat Head on Resulting Crops.” S. Dakota Sta. Bull. No. 187.Google Scholar
(14)Arny, A. C. and Garber, J. (1918). “Variation and Correlation in Wheat with special reference to weight of seed planted.” Journ. Agric. Res. 14, 9.Google Scholar
(15)Cunningham, C. C. (1923). “Study of the Relation of Length of Kernel to the Yield of Corn.” Journ. Agric. Res. 21, 7.Google Scholar
(16)Yamaguchi, Y. [Abstract in Exp. Sta. Record, 45, 1, 1921.] “Relation of Flowering Time and Position of Flowers on Panicle and Branch to Kernel Weight of Rice.”Google Scholar
(17)Munro, F. and Beaven, E. S. (1900). “Various Conditions affecting the Malting Quality of Barley.” J. R. A. S. E. 11.Google Scholar
(18)Hays, H. K. and Harlan, H. V. (1920). “The Inheritance of the Length of Internode in the Rachis of the Barley Spike.” V. S. Dept. of Agric. Bull. No. 869.Google Scholar
(19)Parker, W. H. (1914). “A Case of Correlation in Wheat.” Journ. Agric. Sci. 6.CrossRefGoogle Scholar
(20)Kiessling, L. (1915). Die Vererbung von Stickstoffgehalt und Korngrösse der Gerste. Paul Parey, Berlin.Google Scholar
(21)Pearl, R. (1911). “Some Recent Studies in Variation and Correlation in Agricultural Plants.” Amer. Nat. 45.CrossRefGoogle Scholar
(22)Berry, A. R. (1920). “Composition and Properties of Oat, Grain, and Straw.” Journ. Agric. Sci. 10.CrossRefGoogle Scholar
(23)Brenchley, Miss, and Hall, A. D. (1908–1910). “The Development of the Grain of Wheat.” Journ. Agric. Sci. 3.Google Scholar
(24)Barber, C. A. “Studies in Indian Sugar-Cane.” Mem. Dep. Agric. India (Botanical Series), 10, No. 2.Google Scholar
(25)Findlay, W. M. (1919). “The Size of Seed.” N. of Scotland Coll. of Agric. Bull. No. 23.Google Scholar
(26)Waldron, L. R. (1921). “Rate of Culm Formation in Bromus inermis.” Journ. Agric. Res. 21.Google Scholar
(27)Summers, F. W. (1921). “The Tillering of Ceylon Rices.” Tropical Agric. 56, 2.Google Scholar
(28)Kidd, F. and West, C. (1918). “Physiological Predetermination: The Influence of the Physiological Condition of the Seed upon the Course of Subsequent Growth and upon the Yield.” Chapter 1. Ann. App. Biol. 5, No. 2.Google Scholar
(29)Prescott, J. A. (1920). “A Study of Nitrogen and Root Space.” Sultanic Agric. Soc. Bull. No. 4.Google Scholar
(30)Olympia Agricultural Company (Research Department). First Annual Report, 06, 1921.Google Scholar
(31)Biffen, R. H. (1904–1905). “Mendel's Laws and Wheat Breeding.” Journ. Agric. Sci. 1.Google Scholar
(32)Keeble, F. and Pellew, Miss C.. (1910–1911). “Mode of Inheritance of Stature and Time of Flowering in Pisum.” Journ. Genetics, 1.CrossRefGoogle Scholar
(33)Caporn, A. St. C. (1910–1911). “An Account of an Experiment to determine the Heredity of Early and Late Ripening in an Oat Cross.” Journ. Genetics, 7.Google Scholar
(34)Freeman, G. F. (1919). “The Heredity of Quantitative Characters in Wheat.’ Journ. Genetics, 4.Google ScholarPubMed
(35)Hoshino, Y. (11 1915). “On the Inheritance of Flowering Time in Peas and Rice.” Journ. Coll. of Agric, Tohoku Imp. Univ. Sapporo, Japan, 6, Part IX.Google Scholar
(36)Cowens, C. (1904). “Ein typisch spaltender Bastard zwischen einer einjährigen und einer zweijährigen Sippe des Hyoscyamus niger.” Ber. Deut. Bot. Ges. B. 22.Google Scholar
(37)Thompson, W. P. (1912). “The Inheritance of the Length of the Flowering and Ripening Periods in Wheat.” Trans. Roy. Soc. of Canada, 12, Series III.Google Scholar
(38)Castle, W. E. (1916). “New Light on Blending and Mendelian Inheritance.” Amer. Nat. 50.CrossRefGoogle Scholar
(39)Harlan, H. V. (1920). “Daily Development of Kernels of Hannchen Barley from Flowering to Maturity at Aberdeen, Idaho.” Journ. Agric. Res. 19.Google Scholar
(40)Beaven, E. S. (11 1920). “Breeding Cereals for Increased Production.” Journ. of the Farmers' Club, Part VI.Google Scholar
(41)Collins, G. N. “Correlated Characters in Maize Breeding.” Journ. Agric. Res. 6(1).Google Scholar
(42)Kiesselbach, T. A. (1922). “Ear Type Selection and Yield of Dent Corn.” Journ. Amer. Soc. Agric. 14.Google Scholar
(43)Brenchley Winifred, E. and Jackson, Violet G. (1921). “Root Development in Barley and Wheat under Different Conditions of Growth.” Ann. Bot. 36.Google Scholar
(44)Jackson, Violet G. (1922). “Anatomical Structure of the Roots of Barley.” Ann. Bot. 36.Google Scholar
(45)Balls, W. L. (1914). “The Pre-determination of Fluctuating Characteristics.” Proc. Camb. Phil. Soc.Google Scholar
(46)Balls, W. L. and Holton, F. S. “Analyses of Agricultural Yield.” Phil. Trans. Roy. Soc. B. 206 and 208.Google Scholar
(47)Backhouse, W. O. “The Inheritance of Glume-length in Triticum polonicum— A Case of Zygotic Inhibition.” Journ. Genetics, 7.CrossRefGoogle Scholar
(48)Engledow, F. L. (1920). “The Inheritance of Glume-length and Grain-length in a Wheat Cross.” Journ. Genetics, 10.CrossRefGoogle Scholar
(49)Balls, W. L. (1909). Studies of Egyptian Cotton.Google Scholar
(50)Groth, B. H. A.Bulletins of the New Jersey Exp. Sta. Nos. 228, 238, 239, 242, 278.Google Scholar
(51)Burtt-Davy, J. (1912). “Observations on the Inheritance of Characters in Zea Mays (Linn.).” Trans. Roy. Soc. S. Africa, 2.Google Scholar
(52)Richey, F. D. (1922). “The Experimental Basis for the Present Status of Corn Breeding.” Journ. Amer. Soc. Agron. 9.Google Scholar
(53)Gaines, E. F. (1920). “Inheritance of Resistance to Bunt of Wheat.” Journ. Amer. Soc. Agron. 12.Google Scholar