
TY  - JOUR
A1  - Muschietti Piana, Pilar 
A1  - McBeath, Therese Marie 
A1  - McNeill, Ann Marie 
A1  - Cipriotti, Pablo Ariel 
A1  - Gupta, Vadakattu 
T1  - <i>Corrigendum to</i>: Early growing season immobilisation affects post-tillering wheat nitrogen uptake from crop stubble and <sup>15</sup>N fertiliser in a sandy soil
JF  - Soil Research
JO  - Soil Res.
Y1  - 2021
VL  - 59
IS  - 3
SP  - 318
EP  - 318
KW  - 
UR  - https://doi.org/10.1071/SR20158_CO 
N2  - In semiarid sandy soil environments there is a dual challenge of carbon and nitrogen (N) limitation that needs to be managed to ensure timely supply of N to crops. Management of N inputs to soil using combinations of legume stubble addition and fertiliser N in cereal systems is essential to meet crop demand and maintain N in soil organic matter. The aim of this study was to assess soil mineral and biological N pools that influence N supply and N uptake of wheat at early growth stages. The recovery of 15N-labelled fertiliser by wheat was evaluated using a factorial combination of either wheat, lupin or no stubble incorporated with or without 15N fertiliser in a sandy soil system. Soil and plant samples were collected at sowing, tillering, first node and booting to monitor changes in N pools and 15N uptake by the wheat. Crop stubble incorporation one week before sowing increased biological N pools in the surface soil (0&#x2013;10 cm). Early N immobilisation (sowing&#x2013;tillering) in all the treatments without 15N fertiliser may have limited N availability for wheat uptake in the subsequent period (tillering&#x2013;first node), when fertiliser N appeared critical to maximise N supply for plant requirements. Up to 38% of the 15N fertiliser applied at sowing was incorporated into the soil microbial biomass pool, so that fertiliser N was critical to relieve short-term inherent N limitations for both plant and microbial growth, and to supply the longer-term biological pools (microbial biomass) to support subsequent mineralisation potential. Reducing the energy limitation to the microbial pool through inputs of carbon from stubble was also critical to ensure fertiliser N supplied sufficient N to satisfy plant demand later in the growing period. These results have implications for management decisions on semiarid sandy soil systems that aim to synchronise N from inputs of legume stubbles and fertiliser with crop N demand during early growth stages of wheat. 
ER  -

