Effect of fertilization on the weediness of maize in a long-term field experiment.
We carried our examination in a long-term fertilization field experiment in 2005. In the experiment we had opportunity to compare the weediness in NPK and NPK + FYM1 treatments, and we could study the effect of increasing N dosis on the weeds and maize. The bi-factorial trial was arranged in split plot design with three replications. The weed survey was made 25 days after seeding in the 27th of may. For the weed survey the Balázs-Ujvárosi method was applied. After the weed survey we collected all the weed species from the plots per 1-1 m2. We counted, mesured the fresh and dry matter weight of aerial shoots. We collected maize too, five pieces per plots. In the experiment were found 12 weed species, 9 annual: Abutilon theophrasti, Amaranthus chlorostachys, Ambrosia artemisiifolia, Chenopodium album, Chenopodium hybridum, Echinochloa crus-galli, Polygonum lapathifolium, Xantium strumarium, Veronica hederi-folia, and 3 perennial: Cirsium arvense, Convolvulus arvensis, Lathyrus tuberosus. On the NPK plots the Ch. album, on NPK + FYM treatments the A. theophrasti was the first in order of the dominance. The biomass production of weeds in the NPK + FYM treatments were 3 times higher than in the only NPK treatments.
Kismányoky
A
A
Georgikon Faculty of Agricultural Sciences, Pannon University P.O. Box 71, H-8360 Keszthely, Hungary.
Lehoczky
E
E
Kismányoky
T
T
D018533:Biomass; D018556:Crops, Agricultural / Q000254:growth & development / Q000378:metabolism; D005308:Fertilizers; D009584:Nitrogen / Q000008:administration & dosage / Q000032:analysis / Q000378:metabolism; D010758:Phosphorus / Q000008:administration & dosage / Q000032:analysis / Q000378:metabolism; D011188:Potassium / Q000008:administration & dosage / Q000032:analysis / Q000378:metabolism; D011897:Random Allocation; D012987:Soil / Q000032:analysis*; D003313:Zea mays / Q000254:growth & development* / Q000378:metabolism*
D005308:Fertilizers; D012987:Soil; D010758:Phosphorus; D009584:Nitrogen; D011188:Potassium