Nitrapyrin Impacts on Maize Yield and Nitrogen Use Efficiency with Spring‐Applied Nitrogen: Field Studies vs. Meta‐Analysis Comparison

Agronomy Journal - Tập 106 Số 2 - Trang 753-760 - 2014
Juan P Burzaco1, Ignacio A. Ciampitti2, Tony J. Vyn1
1Agronomy Dep. Purdue Univ. 915 W State St. West Lafayette IN 47907-2054
2Dep. of Agronomy 2014E Throckmorton Plant Sciences Center, Kansas State Univ. Manhattan KS 66506

Tóm tắt

In maize (Zea mays L.), low N use efficiency (NUE) is observed when a high proportion of the fertilizer N is not recovered by the crop. Combining different management practices can improve maize NUE. The objectives were to assess the impacts of integrated N management practices on grain yield (GY), plant N uptake (PNU), and NUE (and its components, N recovery efficiency [NRE] and N internal efficiency [NIE]) from three maize site‐years (Indiana). The factors evaluated were: (i) N rate (0, 90, and 180 kg N ha−1), (ii) nitrapyrin (presence or absence), and (iii) N timing (at planting or V6 stage). Grain yields for the field research study ranged from 6.3 to 12.1 Mg ha−1. The main results indicated: (i) PNU increased with N rates and with delayed N timing, (ii) the use of nitrapyrin increased NUE (∼17%), primarily via improving NRE (∼25%), and (iii) NUE increased by delaying the timing of N application. In addition to the field experiments, a meta‐analysis studying the effect of nitrapyrin on maize GY, PNU, and NUE was performed. Highlights from the meta‐analysis were: (i) positive impacts of nitrapyrin application on both GY and PNU, but (ii) those impacts were neither reflected in gains for NUE nor for NRE and NIE. The positive impacts of nitrapyrin on NUE (and components) found in the field research study were not consistent with the outcomes documented in the meta‐analysis. This emphasizes that the potential maize NUE benefits of nitrapyrin addition to spring N applications are not always realized.

Từ khóa


Tài liệu tham khảo

AOAC International, 2000, Official methods of analysis, 26

Balasubramanian V., 2004, Agriculture and the nitrogen cycle: Assessing the impacts of fertilizer use on food production and the environment, 19

10.2134/agronj1988.00021962008000010022x

Burzaco J.P., 2012, Effects of nitrapyrin, N rates and N timing on nitrous oxide emissions and nitrogen use efficiency in maize fertilized with urea ammonium nitrate

10.1579/0044-7447-31.2.132

Cerrato M.E., 1990, Effects of nitrapyrin on corn yields and recovery of ammonium-N at 18 site-years in Iowa, J. Prod. Agric., 3, 513, 10.2134/jpa1990.0513

10.2134/agronj1982.00021962007400030038x

10.1016/j.fcr.2010.10.009

10.1016/j.fcr.2012.03.008

10.2135/cropsci2012.07.0439

Dobermann A.R., 2005, Paper presented at the IFA International Workshop on Enhanced-Efficiency Fertilizers, 28

10.2134/agronj1986.00021962007800040036x

Giller K.E., 2004, Agriculture and the nitrogen cycle: Assessing the impacts of fertilizer use on food production and the environment, 35

10.1136/bmj.327.7414.557

10.2136/sssaj1997.03615995006100060022x

10.1016/S0065-2113(05)87003-8

10.1136/bmj.322.7300.1479

Murrell T.S., 1991, Variation in the response of corn to applied nitrogen at six sites in Indiana

10.2134/agronj1986.00021962007800050023x

10.2134/agronj2013.0184

R Development Core Team., 2009, R: A language and environment for statistical computing

Randall G.W., 2004, Nitrate losses to tile drainage as affected by nitrogen fertilization of corn in a corn–soybean rotation

10.2134/agronj2005.0472

10.2134/agronj2003.1213

10.2134/agronj1999.00021962009100030001x

Ritchie S.W., 1997, How a corn plants develops

10.1080/00103629309368983

10.2136/sssaj1981.03615995004500030024x

10.1016/j.fcr.2009.05.003

SAS Institute, 2004, 2004. SAS/STAT 9.1 user's guide

10.2134/jpa1990.0507

10.18637/jss.v036.i03

Walker P.C., 1993, Nitrogen use efficiency in corn under several nitrogen fertilization regimes

10.2134/agronj1971.00021962006300010037x

10.1023/B:FRES.0000025287.52565.99

Thông tin
Thông tin xuất bản

Agronomy Journal

Tập 106 Số 2

753-760

Thông tin tác giả