Life Sciences Commons^™

Seeding Rate And Row-Spacing Effects On Seed Yield And Yield Components Of Leymus Chinensis (Trin.) Tzvel., Yunhua Han, Xianguo Wang, Tianming Hu, Zhenlei Zhu, Zhengwei Wang, Ying Wang

IGC Proceedings (1997-2023)

Chinese sheepgrass (Leymus chinensis (Trin.) Tzvel.) is widely distributed in the eastern portion of the Inner Mongolian Plateau and the Songnen Grassland of China. This grass is highly salt, cold and drought tolerant and has been the major source of forage for cows and other ruminants in China (Gao et al. 2012). Seed yield of this grass is very low under native conditions because of the low heading percentage and percentage of seed set (Wang et al. 2010). The Hexi Corridor, located in China’s northwestern Gansu Province, is the seed production center of China because of its …

Ryegrass Seeding Rate Alters Plant Morphology And Size--Possible Implications For Pasture Persistence, Julia M. Lee, Errol R. Thom, David F. Chapman, Kate T. Wynn, C. Deanne Waugh, Laura Rossi

IGC Proceedings (1997-2023)

Poor persistence of perennial ryegrass (Lolium perenne L.) is a major dairy industry issue in New Zealand and Australia. New ryegrass seed is often drilled at 18-30 kg/ha, although previous research indicated that pastures drilled at 10-12 kg/ha can be just as productive (Frame and Boyd 1986; Praat et al. 1996). High seeding rates increase competition between developing seedlings for light, water and nutrients, reduce plant size (Harris 1990) and potentially survival.

The experiment reported here investigated the effect of plant density (created by differences in seeding rate) on plant morphology and survival. The hypothesis was that plants …

Seeding Rate For Dryland Wheat, A. Schlegel, J. Holman, L. Haag

Kansas Agricultural Experiment Station Research Reports

Four winter wheat varieties (PlainsGold Byrd, Limagrain T158, Syngenta TAM 111, and WestBred Winterhawk) were planted at five seeding rates (30, 45, 60, 75, and 90 lb/a) in the fall of 2014, 2015, 2016, and 2017 at Colby, Garden City, and Tribune, KS. The objective of the study is to identify appropriate seeding rates for dryland winter wheat in western Kansas. Averaged across varieties, a seeding rate of 60 lb/a seemed to be adequate at all locations in 2015. However, with higher yields in 2016, a higher seeding rate (75 lb/a) was beneficial. Although yields were less in 2017 than …

Wheat Variety Response To Seeding Rate In Kansas During The 2018–19 Growing Season, R. P. Lollato, L. Molssato, C. Rapolla, G. Zhang, A. Fritz

Kansas Agricultural Experiment Station Research Reports

Different wheat varieties might require different seeding densities to maximize yield. Thus, the main objective of this project was to better understand the response of different wheat varieties to different seeding rates. Three field experiments were conducted during the 2017-18 growing season evaluating six wheat varieties subjected to five different seeding rates (0.6, 0.95, 1.3, 1.65, and 2.0 million seeds per acre). Crop was managed from a 70 bu/a yield goal and pests were controlled using commercially available pesticides. We measured final stand and grain yield, and all statistical analyses were performed for relating emerged plants per acre to grain …