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Winter wheat in crop rotations with high percentage of corn and in monoculture
1988
Adamiak, J. (Akademia Rolniczo-Techniczna, Olsztyn (Poland). Katedra Ogolnej Uprawy Roslin)
Response of winter wheat to the shortening of crop rotation and to monoculture was studied in 1977-85 in a strict, statical field experiment, carried out on heavy brown soil. The same percentage of cereals (67 percent) and winter wheat (33 percent) was maintained during sowing in 6-field control crop rotation and in the 3-field experimental ones. Forecrops of winter wheat were differentiated in the 3-field rotations. The levels of mineral fertilization were applied. Shortening of the crop rotation cycle from 6 to 3 years decreased yield of winter wheat by 10 percent on the average. Negative response of winter wheat to 3-field rotations depended on the forecrop. Higher (by 50 percent) doses of mineral fertilization increased the yield of winter wheat but did not alleviate negative phenomena caused by shortening of the crop rotation and by less valuable forecrops
Afficher plus [+] Moins [-][Efficacy of fungicides on soft winter wheat [1987]]
1988
Eschenbrenner, P. (Institut Technique des Cereales et des Fourrages, Paris (France))
[Effects of herbicides on winter- and frost resistance in different winter wheat varieties]
1988
Barashkova, Eh.A. | Kazarina, E.M. | Voevodin, A.V. | Vyprentseva, E.G.
[Systematic analysis on effect of fertilizer experiments on winter-wheat]
1988
Mao Daru | Zhang Chendong (Beijing Agricultural Univ. (China))
The crop is considered as a production system. Using systematic analysis and the method of "black box" of cybernetics. We analyze and simulate the results which were obtained from the experiment of winter wheat designed with D-optimal design. Full information was analyzed from the experiment for making recommandation fertilizer.
Afficher plus [+] Moins [-][Dependence of winter wheat yield on mineral nutrition, variety winter hardiness and agrometeorological conditions]
1988
Karmanenko, N.M. | Vaulina, G.I.
Inheritance of a 1BL/1RS wheat-rye translocated chromosome in wheat.
1988
Rayburn A.L. | Mornhinweg D.W.
In the Great Plains, winter wheat (Triticum aestivum L.) lines carrying the 1BS/1RL wheat-rye translocated chromosome are being used extensively in wheat breeding programs. This study was conducted to determine the influence of the 1BL/1RS chromosome on gametic transmission in adapted winter wheat backgrounds. Oklahoma experimental line OK83398 ('Aurora'/2 TAM W-101) was crossed to both 'Arkan' and 'Chisholm'. The F2 plants were analyzed as to their chromosomal composition using the chromosomal N-banding procedure. In both crosses a significant deviation of a 1 homozygous 1B:2 heterozygous:1 homozygous 1BL/1RS ratio at the P =0.05 level was observed. The transmission of gametes containing the 1BL/1RS translocated chromosome was observed to be reduced in F1 hybrids in winter wheat backgrounds.
Afficher plus [+] Moins [-]Effect of latitude on phenology of 'Colt' winter wheat
1988
Bauer, A. (Northern Great Plains Research Lab. USDA-ARS, Mandan, ND (USA)) | Garcia, R. | Kanemasu, E.T. | Blad, B.L. | Hatfield, J.L. | Major, D.J. | Reginato, R.J. | Hubbard, K.G.
On the quality of winter wheat from crop '87
1988
Schmieder, W. (Institut fuer Getreideforschung, Bernburg-Hadmersleben (German D.R.))
On every other line border irrigation of winter wheat
1988
Yao Jianhua (Gaocheng County Water Conservancy Bureau, Hebei (China))
Effects of mineral fertilization on pests in winter wheat
1988
Szabolcs, J. | Nadasy, M. (Universitaet fuer Agrarwissenschaft Keszthely (Hungary). Institut fuer Pflanzenschutz)
