Nutrient absorbtion of weeds in maize.
Our study was carried out in Hungary at Keszthely, in 2007. The effect of different cultivation methods: no-till drill, disk tillage, conventional tillage (ploughing) and five increasing N doses were studied on the weediness. The bi-factorial trial was arranged in split plot design with four replications. Crop rotation: winter wheat-winter wheat-maize-maize. The seeding of maize was 23rd of April in 2007. The weed survey was made with Balázs-Ujvárosi coenological method on the 17th of May. In the experiment were found 21 weed species. We collected all plants of every weed species by plots. The sample area was 1 m2. Furthermore five maize plants per plot were sampled on the 22nd of May. Maize was at 3-4 leaves stage. For reason of competition studies no herbicides were applied on sampling sites. The aerial parts of weeds and maize plants were collected, and the fresh and dry matter weight was measured. We analyzed in detail, the occurrence of weed species, and the biomass production of weeds in comparison with maize. The effect of different cultivation methods markedly demonstrated the weed cover, the number of perennial and annual weeds and the number of occurring weed species.
Lehoczky
E
E
University of Pannonia, Georgikon Faculty of Agriculture Institute for Plant Protection, Deák F. Str. 16, HU-8360 Keszthely, Hungary. lehoczky@georgikon.hu
Kismányoky
A
A
Nagy
P
P
Németh
T
T
D000042:Absorption; D000383:Agriculture / Q000379:methods*; D018533:Biomass; D009584:Nitrogen / Q000032:analysis / Q000378:metabolism* / Q000494:pharmacology; D006109:Poaceae / Q000254:growth & development / Q000378:metabolism*; D012987:Soil / Q000032:analysis; D014908:Triticum / Q000254:growth & development / Q000378:metabolism; D003313:Zea mays / Q000254:growth & development* / Q000378:metabolism*
D012987:Soil; D009584:Nitrogen