Theme 2: Forage--Oral Sessions

Description

Oat (Avena sativa L.) has been a quality forage for the livestock husbandry in the Qinghai-Tibetan Plateau. But farmers tend to use high sowing rates to avoid forage production risks, which does not always give the optimum yield. An field experiment was carried out to explore the response of dry matter production of forage oat Jiayan No.2 to sowing rates in three locations of the Qinghai-Tibetan Plateau: Tianzhu county (TZ), Haiyan county (HB) and Hongyuan county (HY).The five sowing rates were set as 30 , 60 , 90 , 150 and 240 kg·ha-1. Sowing rates had a significant effect on the biomass of forage oat In TZ, the highest biomass at heading and milking stage was 14.96 t·ha-1 and 22.93 t·ha-1 under 240 and 150 kg·ha-1, respectively. In HB, 15.28 t·ha-1 and 16.75 t·ha-1 biomass yield at heading and milk stage, respectively were observed under 60 kg·ha-1. In HY, the largest biomass yield at two growth stages was up to 3.60 t·ha-1 and 7.49 t·ha-1 under 150 kg·ha-1, respectively. However, sowing rates had no significant effect on the stem/leaf biomass ratio of the plant. Based on the findings of this study, 60 and 150 kg·ha-1 had great significance on achieving high yield and it is recommended for high forage oat biomass production in the Qinghai-Tibetan Plateau.

Share

COinS
 

Sowing Rate Effects on Biomass Production of a Forage Oat in the Qinghai-Tibetan Plateau

Oat (Avena sativa L.) has been a quality forage for the livestock husbandry in the Qinghai-Tibetan Plateau. But farmers tend to use high sowing rates to avoid forage production risks, which does not always give the optimum yield. An field experiment was carried out to explore the response of dry matter production of forage oat Jiayan No.2 to sowing rates in three locations of the Qinghai-Tibetan Plateau: Tianzhu county (TZ), Haiyan county (HB) and Hongyuan county (HY).The five sowing rates were set as 30 , 60 , 90 , 150 and 240 kg·ha-1. Sowing rates had a significant effect on the biomass of forage oat In TZ, the highest biomass at heading and milking stage was 14.96 t·ha-1 and 22.93 t·ha-1 under 240 and 150 kg·ha-1, respectively. In HB, 15.28 t·ha-1 and 16.75 t·ha-1 biomass yield at heading and milk stage, respectively were observed under 60 kg·ha-1. In HY, the largest biomass yield at two growth stages was up to 3.60 t·ha-1 and 7.49 t·ha-1 under 150 kg·ha-1, respectively. However, sowing rates had no significant effect on the stem/leaf biomass ratio of the plant. Based on the findings of this study, 60 and 150 kg·ha-1 had great significance on achieving high yield and it is recommended for high forage oat biomass production in the Qinghai-Tibetan Plateau.