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Ozimai︠a︡ pshenit︠s︡a na oroshaemykh | Winter wheat on irrigated lands
1976
Sobko, Aleksandr Alekseevich
The influence of nitrogen fertiliser on grain quality in winter wheat.
1976
Batey T. | Reynish D.J.
Diagnosis of the winter wheat nutrition on various types of soils
1976
Gorshkova, M.A. (Dokuchaev Soil Inst., Moscow (USSR))
The influence of nitrogen fertilizer on grain quality in winter wheat.
1976
Batey T. | Reynish D.J.
Effect of some microelements on the yields of Aurora winter wheat variety
1976
Kandera, J. (Vyskumny Ustav Rastlinnej Vyroby, Piestany (Czechoslovakia))
Winter Wheat Yield Reduction from Interference by Italian Ryegrass Полный текст
1976
Appleby, A. P. | Olson, P. D. | Colbert, D. R.
Italian ryegrass (Lolium multiflorum Lam.) is a serious and widespread weed problem in grain fields of western Oregon and Washington. Field studies were conducted to measure effects of Italian ryegrass interference on winter wheat (Triticum aestivum L.) yields. Wheat cultivars used were ‘Nugaines,’ ‘Druchamp,’ ‘Hyslop,’ and ‘Yamhill.’ Ryegrass densities ranging from 0 to approximately 100 plants/m² were established by hand distribution on the soil surface, followed by harrowing. Urea fertilizer was applied in the spring at 56, 112, and 168 kg of N/ha. As ryegrass densities increased, wheat grain yields decreased. In one experiment, wheat grain yield was reduced by 4,100 kg/ha when the ryegrass density was increased from 0.7 to 93 plants/m². Interference caused greater percentage reductions in wheat yields at 168 kg N/ha than at 56 kg N/ha when ryegrass densities were high. The percentage of yield reduction tended to be higher in short wheat cultivars, Nugaines and Hyslop, than in tall cultivars, Druchamp and Yamhill. When no weed control measures were used, ryegrass infestations in the 1970 crop caused wheat yield reductions in the 1971 crop. This was due to higher ryegrass densities in 1971 in plots where the heaviest ryegrass densities occurred in 1970. When ryegrass was controlled with diuron [3-(3,4-dichlorophenyl)-1,1-dimethylurea] in 1971, no carry-over effects from previous ryegrass infestations could be measured. Results obtained in these studies illustrate the importance of good ryegrass control in winter wheat management systems.
Показать больше [+] Меньше [-]Ucinok delenych davok N pri ozimnej psenici.
1976
Kandera J.
The influence of preceding crops on nutrient uptake and utilization in winter wheat
1976
Petrickova, N. (Vysoka Skola Zemedelska, Brno (Czechoslovakia))
The occurrence of Typhula ishikariensis Lasch ex Fr. on winter wheat in Czechoslovakia.
1976
Benada J.
Influence of long-term soil fertility treatments on weed species in winter wheat.
1976
Banks P.A. | Santelmann P.W. | Tucker B.B.
