خيارات البحث
النتائج 1 - 5 من 5
[Overfertilized water - underfertilized fields: approach to cycling and sustainable food supply [Bohuslaen]]
1996
Schoenbeck, A.
Macrozoobenthos as a fish food source on the open water area of the Lake Balaton
1998
Szito, A.
The aims of the investigations were to estimate the biomass and the production of the macrozoobenthos and to know their season dynamics. Investigations were supported by Fishery's Foundation. Sediment chemical analysis showed that the macrozoobenthos biomass was determined by the quantity of the phosporus. Chironomid larvae formed the 70-90 per cent of benthos biomass in Keszthely basin.
اظهر المزيد [+] اقل [-]Some relations among the fish stock, water quality and amount of natural food in ponds
1990
Prikryl, I. (Research Inst. of Fish Culture and Hydrobiology, Vodnany (Czech Republic))
Ensayo de induccion a la maduracion de la cachama, Colossoma macropomun bajo condiciones controladas de alimentacion, biomasa y cambio en los niveles de agua.
1989
Fadul Meyer E.M.
[4. Approach of yield elaboration]. Water alimentation of maize on pre-flowering period and elaboration of grain yield
1991
Deumier, J.M. (Institut Technique des Cereales et des Fourrages, Baziege (France). Station Inter Instituts) | Lacroix, B. | Bouthier, A.
