@article{MA_ZHANG_LIN_SU_YIN_LV_ZHANG_2019, title={The Estimation of Nitrogen Uptake and Utilization Efficiency in Cotton by the Fertilizer-Response Model}, volume={47}, url={https://www.notulaebotanicae.ro/index.php/nbha/article/view/11672}, DOI={10.15835/nbha47411672}, abstractNote={<p style="text-align: justify;">Due to the indeterminate growth habit of cotton crops, a better understanding of N status at the rational fertilizer regime is important to promote lint yield. The fertilizer-response model was employed to evaluate N status by analyzing data of shoot dry mass, N content and N concentration at different growing stages. A field study was conducted on drip-irrigated cotton plants with N fertilizer addition in total amounts of 0 (N0), 120 (N1), 240 (N2), 360 (N3) and 480 (N4) kg ha<sup>-1</sup> in Xinjiang, China in 2016. Thirty percent of total fertilizers were applied at planting and the rest 70% were applied over six applications. The N fertilizer treatment at the accumulative rate of 70 kg ha<sup>-1</sup> was enough to induce the N status of steady state accumulation 60 days after germination. Since 90 days the treatments that delivered the N amount between 120 and 240 kg ha<sup>-1</sup> was deficient for cotton demand, higher rates from 360 and 480 kg ha<sup>-1</sup> induced inherent N reserve and resulted in the highest level of yield. With regard to the practical meaning, the N fertilizer dose of 360 kg ha<sup>-1</sup> can be used for cotton growth. The N fertilizer dose of 120 kg ha<sup>-1</sup> can be recommended when the yield of 5,840 kg ha<sup>-1</sup> lint can meet the goal of cotton culture.</p>}, number={4}, journal={Notulae Botanicae Horti Agrobotanici Cluj-Napoca}, author={MA, Lulu and ZHANG, Qiang and LIN, Jiao and SU, Wei and YIN, Caixia and LV, Xin and ZHANG, Ze}, year={2019}, month={Nov.}, pages={1400–1408} }