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Fluid Journal : Summer 2016
10 The Fluid Journal Summer 2016 Russell French is CCA and Dupont/ Pioneer Account Manager, Robert Bowling is a Dupont/Pioneer Field Agronomist, Alyssa Abbott is a Dupont/Pioneer Account Manager and Mike Stewart is Central and Southern Plains Regional Director for IPNI. season N applications. N Monitoring project. In 2013, an N monitoring project managed by DuPont Pioneer personnel was implemented on a 6,000 acre irrigated corn farm in the Texas Panhandle. Compost and manure are used extensively as a primary N source on these acres. The yield goal across these acres was 250 bushels per acre. Nitrogen recommendations were based on field and environmental conditions and lab results from soil and plant samples collected both in mid-June (V5) and in mid-July (VT). Adjustments in N applications were made when needed based on the condition of the crop. For example, fields damaged by hail received reduced rates of N and conversely, fields with yield potential above 250 bushels per acre received additional N. The yield average across the 6,000 acres was 253 bushels per acre based on dry weight determined by a local grain elevator. One 129 acre field averaged 300 bushels per acre. Lower stalk nitrate tests revealed the majority of fields were in the optimum to slightly excessive range with only a few fields in the marginal or excessive range. These proven principles from the Texas Panhandle have demonstrated positive results when replicated on an irrigated field in northeastern Illinois in 2013. Corn receiving the post-tassel N treatment had increased kernel depth, test weight, and stalk quality when compared with grain from the check that did not receive a post-tassel N application. Similar results have been reported by Crozier et al. (2013). Summing up Producer attendance at crop production clinics has been increased over time through the use of private industry resources and coordination efforts with university Extension specialists. Production clinics have facilitated high early adoption rates of practices described here, which is followed by rapid wide spread adoption among High Plains farmers. Specific practices that have been rapidly and widely adopted included strip-till and no-till, increased starter fertilizer use as a result of 2 x 0 surface banding, and movement away from 100% pre- plant N application to side-dress and fertigation applications. Other practices that have shown high adoption rates include in-season N applications to fine tune N inputs, and an increase in banding of immobile nutrients such as P and K in lieu of broadcast applications (Vossenkemper and Shanahan, 2013). A promising new practice that is currently being explored is center pivot applied N fertilizer at the R2 to R4 growth stage to improve corn yield through increased kernel depth and increased weight. This practice allows later in-season adjustments of N applications when environmental conditions favor higher yield potential, especially where water available for irrigation is limited by declining water tables or state mandated regulations. Kugler Company P.O. Box 1748 McCook, NE 69001 1-800 -445-9116 www.KuglerCompany.com www.KQXRN.com Kugler KQ-XRN , a proprietary technology (28-0 -0) formulation with 72% slow release nitrogen, is the ideal alternative to fungicide. KQ -XRN provides the plant health and nutrition to power through the stressful period. And applying 2 gallons of KQ-XRN provides an additional 20 bushel per acre yield increase . . . something you won’t get from your worn out fungicide application. TIME TO HANG UP YOUR WORN OUT FUNGICIDE PROGRAM KUGLER KQ-XRN SLOW RELEASE NITROGEN THE NEW ALTERNATIVE 120-DAY APPLICATION WINDOW 20-DAY APPLICATION WINDOW KQ-117M.indd 1 2/11/16 4:02 PM