in order to determine the critical period of weed control (cpwc) in corn (zea mays l.), an experiment was carried out in a randomized complete blocks design with 14 treatments and three replications during 2013 growing season in the nahavand climatic conditions. two series of the treatments including weed-free and weed-infested were applied in the regular time distances of 10, 20, 30, 40, 50 an...

in this research, the effect of crops such as corn, wheat, sugar beet and clover as previous crop on incidence of leaf and crown wart disease of sugar beet was studied. in the first year, corn, wheat, clover and sugar beet were planted as previous crop in a randomized complete block design with four replications. the amounts of turnover of nitrogen to the soil due to crop residue and their effe...

maize (zea mays l.) is one of the most important crops that used for food, feeding and industrial products and in iran a developing cultivation. in order to study of corn s reactions (hybrid bc666) to supply nutrients to organic nutrition (bacteria and manure) as summer sown in climate conditions of lorestan. an experiment was conduct in meteorology station of lorestan s agriculture research fi...

a randomized complete block design with four replications and a split plot arrangement was conducted in 2010, in order to study the effect of limited irrigation on yield and yield component of sweet corn. water levels were (100%, 80%, and 60% replacement of plant water requirement) which served as main plots. subplot was a factorial arrangement of three different sweet corn varieties (merit, ob...

In order to solve the practical problems of large water demand and shortage resources in traditional wheat/maize intercropping, a planting method changing stubble retention is proposed this paper. This was used study effects three methods wheat straw incineration, return, on grain yield, use efficiency (WUE), economic benefits intercropping. The results showed that, compared with yield burning ...

The study aims to determine the effect of applying for intercropping food crops (rice, corn, and soybeans = jagole ) on cropping index income urban farming community activists. This was conducted by comparing use six models growing crops, namely three kinds monoculture model , upland rice-soybean, sweet corn-soybean, corn-upland rice polyculture/ “ Turiman ”. Observational data includes land ch...