Research regarding winter wheat sowing time under conditions of moldavian central plateau

摘要

Among the measures which contribute to winter wheat yield increasing, the sowing time presents a great importance. The results of the performed research emphasize that the new cultivars are more exacting to the sowing time than the older ones. The paper presents the behaviour of winter wheat as regards the yield depending on the sowing time under conditions of Moldavian Central Plateau. Ten sowing times were studied: 1 - September 15th; 2 - September 25th; 3 - October 1st; 4 - October 5th; 5 - October 10th; 6 - October 20th; 7 - October 30th; 8 - November 5th; 9 - November 10th; 10 - November 20th. Rapid cultivar (released by Research Institute for Cereals and Industrial Crops Fundulea), was sown. The greatest yields were achieved when the sowing was done during September 25th - October 10th. On an average, during the three years of research, the late sowing led to the yield losses of 27.3-55.5 percent.