Influence of some technological factors and of biological characteristics on seed production in monoic hemp, under conditions of the agricultural Research Station of Secuieni, Neamţ County

Abstract

The monoic hemp varieties, created at the Agricultural Research Station of Secuieni, Neamţ County, are characterized by high fibre content in the stem and high seed production/area unit. Next to the creation of productive varieties, the growing technology has an important role, too. The experiments set up at the Agricultural Research Station of Secuieni, under conditions of year 2007, which was very dry, pointed out that the varieties had a high drought resistance and that the two technological links (fertilization and sowing period) influenced the quantitative, qualitative and economic crop level. The seed yields, obtained under conditions of year 2007, were between 596 and 800 kg/ha. Applying fertilizers has resulted in yield increases between 7 and 34% and improved the seed value. The best time for hemp sowing is when a temperature of 7-80C is found in soil. The duration of different phenological phases has shown a great variability and was influenced by sowing period, fertilization and climatic conditions of the year.