Effects of Different Seeding Date on Yield and Related Characteristics of Corn Variety Zhengdan 538
ZHAO Xia
DING Yong
TANG Baojun
ZHAO Faxin
DU Dongwei
LI Xinze
TIAN Huipeng
Abstract：The field experiment with 7 kinds of seeding dates was carried out in 2012 to find the most suitable seeding date for new corn variety Zhengdan 538 .With the delay of sowing date ,the growth duration of Zhengdan 538 decreased ,and the rate of rough dwarf disease cut down .The days from seeding to emergence ,from emergence to tasseling and from tasseling to mature de-creased by 2 d ,2 d and 11 d ,respectively ,when it was sowed on June 5 ,compared to that sowed on May 21 ,and the rate of rough dwarf disease declined from 10 .15% to 2 .16% .The differences of ear length ,ear diameter and ear row number were not significant among different sowing dates , but the grain number per row reduced and the bald tip elongated with the delay of sowing date . The grain number per row was 12 .19% lower when sowed on June 5 than sowed on May 21 ,and the bald tip was 0 .02 cm longer .The highest yield came from the sowing date of June 5 ,reaching to 11 079 .6 kg/ha ,which was 8 .87% and 18 .91% higher than sowed on May 21 and June 20 ,re-spectively .Integrating all the factors of Zhengdan 538 ,its suitable sowing date should be between M ay 25 and June 10 ,the latest date being June 15 .
Keywords：cornZhengdan 538seeding dateyield
Publication Date：2013-09-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：3( 33-35 )