Effects of organic and inorganic amendments on weed management in sweet maize

Field experiments were conducted to determine the effects of organic andinorganic amendments on weed suppression in sweet maize cultivation (Zea maysL.). A randomized complete block design was employed with four replicates pertreatment with each organic amendment used at half (x/2), single (x=10 t ha-1) anddouble (2x) rates (organic fertilization: cow manure, poultry manure and barleymulch; synthetic fertilizer (240 kg N ha-1: 21-0-0); and control). The highestnumber and dry weight of weeds were recorded for double cow manure andchemical fertilizer treatments. The cow manure treatments promoted weedemergence and growth proportionally to the rate of application (x/2Weed suppressiveeffect of barley residues decreased with time following residue decomposition. Thebarley mulch plots presented the highest values of Shannon-Weiner and Simpsonindices. These results indicate that green manure of barley are effective for thesuppression of some weeds in sweet maize.

کلیدواژه ها:

Fertilization ، Manure ، mulch ، Synthetic fertilizer ، Sweet maize ، Weed