Managing Global Resources for a Secure Future

2017 Annual Meeting | Oct. 22-25 | Tampa, FL

210-2 Optimizing Land and Water Allocations for Irrigated Corn Production with Declining Well Capacities in Kansas.

See more from this Division: ASA Section: Agronomic Production Systems
See more from this Session: Symposium--Current Issues in Soil and Water Management

Tuesday, October 24, 2017: 9:50 AM
Tampa Convention Center, Room 8

Alan J. Schlegel, Kansas State University, Tribune, KS, Isaya Kisekka, Kansas State University, Garden City, KS and Freddie R. Lamm, Kansas State University, Colby, KS
Abstract:
Field studies were conducted at the Kansas State University-Southwest Research-Extension Center near Tribune, KS from 2015 to 2017. Three corn hybrids (two drought tolerant and one non-drought tolerant) were planted at three seeding rates (about 60, 80, and 100 thousand seeds/ha) and irrigated at three irrigation capacities (25 mm of irrigation every 4, 8 or 12 days). The objective is to develop an irrigated corn production function as part of a multi-location project. In general, at this location, increased seeding rate increased yield (mainly through greater ear population offsetting lower kernels ear-1 and kernel mass) and water use efficiency. Increasing irrigation capacity tended to increase yield (primarily through greater kernel mass). Drought tolerant hybrids did not increase yields at this site. A generalized production function will be formulated after combining data from two other locations in Kansas.

See more from this Division: ASA Section: Agronomic Production Systems
See more from this Session: Symposium--Current Issues in Soil and Water Management