خيارات البحث
النتائج 1 - 10 من 841
The raspberry virus elimination program in Czechoslovakia
1989
Janeckova, M. (Research Inst. for Fruit Growing and Breeding, Holovousy (Czechoslovakia))
The rootstock as a modifying factor in the flower organization of the C. 970 Besztercei plum
1989
Suranyi, D. (Research and Development Enterprise for Fruit- and Ornamental Growing, Cegled (Hungary). Station)
The flower organization properties of the C. 970 Besztercei plum clone variety on 10 myrobolan seedling stocks were examined between 1977 and 1981. The rootstock combinations greatly varied in the process of organization. The length of the petiole and the pollen germination, on the other hand, showed a considerable dependence on the year. Self- and open pollination similarly fluctuated during the years of observation. There is a relationship between the fertility /as a function/ and structure of the flower. Flowers with larger petals and small stigma diameters generally set better than those with the opposite characteristics. The examinations have proved that it is necessary and worth-while to place the variety testing on a sounder basis, especially to concretize it by the rootstock types. The rather infrequent flower organ teratomata could be explained by the correlation of reproductive organs. Fertility can thus be influenced by the rootstock, which is of great economic importance.
اظهر المزيد [+] اقل [-]Unsymmetrical dimethylhydrazine and daminozide residues in fresh and processed cherries and apples
1989
Hurter, J. (Swiss Federal Research Station for Fruit-Growing, Viticulture and Horticulture, Wadenswil (Switzerland)) | Umiker, T. | Ramp, T. | Schumacher, R.
Growing media for ornamental plants and turf
1989
Handreck, K. A. (Kevin A.) | Black, N. D. (Neil D.)
Peaches, plums, and nectarines
1989
LaRue, James H. | Johnson, R. Scott
[Crop rotations and growing techniques for protein-producing plants]
1989
Aleixo, A.L. (Tecnica de Lisboa Univ. (Portugal). Instituto Superior de Agronomia. Seccao de Agricultura)
Indicam-se os principais factores a ter em conta no estabelecimento duma rotacao, fazendo notar o interesse duma determinada sequencia das culturas na rotacao. Faz-se em seguida uma breve descricao das tecnicas culturais para algumas proteaginosas chamando-se a atencao para o facto de serem consideradas no conjunto da rotacao e nao atendendo apenas a cada cultura isoladamente
اظهر المزيد [+] اقل [-]Sorghum and triticale for growing-finishing pigs. Effect of flaking
1989
Anon.
Transboundary environmental degradation and the growing demand for institutional innovation
1989
Livingston, M.L. | Witzke, H. von (Department of Economics, University of Northern Colorado (USA))
Growing degree days and planting time for dry pea production
1989
Reis, N.V.B. dos | Oliveira, C.A. da S. | Giordano, L.B.
Chemical composition and nutritive value of peas for growing pigs
1989
Leterme, P. | Cors, F. | Beckers, Y. | Thewis, A. (Faculte des Sciences Agronomiques de Gembloux (Belgium))
