Planting Narrow-Row Soybean Leads To Increased Yield And Farm Profitability Under Conventional Tillage In The Northeast

Other Titles


Growers can plant soybean [Glycine max( L.) Merr.] with a grain drill or row crop planter, which can affect seed and weed control costs and yield. Farmers planted soybean with a grain drill in 0.19 m rows and a row crop planter in 0.38 and 0.76 m rows at recommended (420,000 seeds ha1 ) and reduced (321,000 seeds ha-1) seeding rates in two field-scale studies in New York to obtain agronomic information and conduct partial budget analyses to aid growers in future planter purchase decisions. Soybean intercepted more light in 0.19 (65-70%) compared with 0.76 m rows (50-55%) at flowering, despite lower early plant establishment (~70 and ~85%, respectively) at both locations. At the no-till location, soybean in 0.76 m rows compared with narrower rows had greater weed density at full pod stage (19.7 vs. 6.3 and 5.1 plants m-2) and biomass at harvest (13.7 vs. 6.6 and 7.3 g m-2), but similar yield (~3.30 Mg ha-1). At the chisel tillage location, soybean in 0.19 m rows at 420,000 seeds ha-1 yielded more (4.27 Mg ha-1) than other row spacing by seeding rate combinations (4.15 to 4.01 Mg ha-1). Partial budget analyses indicated that soybean in 0.19 m rows at 420,000 seeds ha-1 had ~$30 ha-1 increased profit compared with 0.76 m rows at 321,000 seeds ha-1. Partial budget analyses indicated that for farms without a grain drill the 4% yield advantage offsets costs of purchasing and owning a grain drill and added seed costs at present market and seed price.

Journal / Series

Volume & Issue



Date Issued




Soybean; Economics


Effective Date

Expiration Date




Union Local


Number of Workers

Committee Chair

DiTommaso, Antonio

Committee Co-Chair

Committee Member

Knoblauch, Wayne Alan
Cox, William Joseph

Degree Discipline

Soil and Crop Sciences

Degree Name

M.S., Soil and Crop Sciences

Degree Level

Master of Science

Related Version

Related DOI

Related To

Related Part

Based on Related Item

Has Other Format(s)

Part of Related Item

Related To

Related Publication(s)

Link(s) to Related Publication(s)


Link(s) to Reference(s)

Previously Published As

Government Document




Other Identifiers


Rights URI


dissertation or thesis

Accessibility Feature

Accessibility Hazard

Accessibility Summary

Link(s) to Catalog Record