Article
Agronomy
Juan Yang, Wanju Shi, Gui Xiao, Xinzhen Zhang, De Wang, Hang Xu, Jinshui Wu, Zijin Yang, Yusha Lai, Meijuan Duan, Jianhua Zhang
Summary: High temperatures have negative effects on rice yield, quality, and nitrogen use efficiency. Optimal nitrogen application levels can improve yield and quality, but cannot mitigate the damage caused by high temperatures.
FIELD CROPS RESEARCH
(2022)
Article
Agronomy
Meikang Wu, Hao Jiang, Zhiheng Wei, Wanchun Li, Kaiyu Gao, Dongchao Wang, Xiaoshuang Wei, Ping Tian, Jingjing Cui, Yuting Di, Zhihai Wu, Meiying Yang
Summary: High grain yields of rice under dry cultivation depend on high levels of nitrogen input, but excessive nitrogen increases the risk of lodging. This study investigated the effect of nitrogen application rates on rice morphology, stem mechanics, and chemical components to understand the underlying mechanism of lodging resistance. The findings suggest that an application rate of 210-228 kg N/ha is recommended for achieving high grain yield and excellent lodging resistance in dry cultivation in central Jilin Province.
Article
Plant Sciences
Wentao Zhou, Lingling Yan, Zhiqiang Fu, Huijuan Guo, Wei Zhang, Wen Liu, Yumeng Ye, Pan Long
Summary: Grain filling is crucial for achieving high grain yield, and manipulating planting densities is recognized as an effective approach to compensate for reduced yield due to nitrogen reduction. This study investigated the effects of nitrogen fertilization and planting density on grain yield, yield formation, and grain-filling characteristics in double-cropping paddy fields. The results showed that reducing nitrogen levels decreased yield, while increasing planting densities significantly improved yield. The highest yield was observed with the combination of reduced nitrogen application and increased planting density. Moreover, increasing planting density and reducing nitrogen had significant effects on grain-filling weight, with the 40% density increase facilitating superior and inferior grain filling. These findings suggest that reduced nitrogen and increased planting density are optimal strategies for improving yield and grain filling in double-cropping rice.
Article
Agronomy
Can Zhao, Guangming Liu, Yue Chen, Yan Jiang, Yi Shi, Lingtian Zhao, Pingqiang Liao, Weiling Wang, Ke Xu, Qigen Dai, Zhongyang Huo
Summary: Excessive nitrogen application leads to a decrease in rice grain yield and grain quality due to suppressed grain filling.
Article
Agronomy
Magdalena Piekutowska, Gniewko Niedbala, Tomasz Piskier, Tomasz Lenartowicz, Krzysztof Pilarski, Tomasz Wojciechowski, Agnieszka A. Pilarska, Aneta Czechowska-Kosacka
Summary: Yield forecasting is a rational and scientific approach in agriculture to predict future events, aiming to reduce risks in decision-making processes. By collecting and analyzing data, linear and non-linear models can be established for different crops, with validation through accuracy verification.
Article
Chemistry, Multidisciplinary
M. Abdul Alim, S. Imran Hossain, Allah Ditta, M. Kamrul Hasan, M. Rafiqul Islam, A. S. M. Golam Hafeez, M. Arif Hossain Khan, M. Kaium Chowdhury, Moaz Hosen Pramanik, Ibrahim Al-Ashkar, Ayman El Sabagh, Mohammad Sohidul Islam
Summary: This study investigated the effects of foliar application of urea on the growth and yield of boro rice. The results showed that combining soil and foliage fertilization can save urea and achieve equivalent or higher yields.
Article
Plant Sciences
Yanhong Li, Zhaowen Mo, Yuzhan Li, Jun Nie, Leilei Kong, Umair Ashraf, Shenggang Pan, Meiyang Duan, Hua Tian, Xiangru Tang
Summary: The study demonstrated that applying nitrogen fertilizer and reducing irrigation water during the tillering stage can increase rice yield and 2-acetyl-1-pyrroline (2AP) content in grains. Treatments with higher nitrogen levels (N2) and lower water levels (W3) were more effective in improving grain yield and aroma compared to other nitrogen and water levels.
JOURNAL OF PLANT GROWTH REGULATION
(2022)
Article
Agronomy
Yan Lan, Xiaodong Sui, Jin Wang, Qiang Duan, Chaoyue Wu, Chunbang Ding, Tian Li
Summary: The optimal nitrogen application rate for the low-gluten rice cultivar D105 was found to be 180 kg center dot hm(-2), which increased both yield and processing quality. Excessive nitrogen application, on the other hand, led to decreased yield.
Article
Multidisciplinary Sciences
Zhen Zhang, Zhenwen Yu, Yongli Zhang, Yu Shi
Summary: The use of split nitrogen fertilizer application at a ratio of 50%:50% basal-topdressing can significantly improve nitrogen translocation and accumulation, leading to increased grain and protein yields in winter wheat production in the Huang-Huai-Hai Plain of China.
Article
Agronomy
Desheng Yang, Shaobing Peng, Chang Zheng, Hongshun Xiang, Jianliang Huang, Kehui Cui, Fei Wang
Summary: Ratooning rice, a traditional practice of harvesting twice after a single seeding, has gained popularity among farmers in central China. Research shows that nitrogen application for promoting regenerated tiller growth (Ntiller) has a more significant positive effect on grain yield and quality of ratoon crop (RC) compared to nitrogen application for promoting bud initiation (Nbud). Ntiller not only increases grain yield, head rice percentage, and improves grain quality, but also enhances sink size and source ability in the ratoon crop.
FIELD CROPS RESEARCH
(2021)
Article
Agronomy
Qiuyuan Liu, Meng Li, Xin Ji, Juan Liu, Fujuan Wang, Yunfei Wei
Summary: Grain protein content (GPC) is an important factor affecting rice quality and nutrition, and there are significant differences in GPC among different varieties. This study compared high GPC (H-GPC) and low GPC (L-GPC) japonica rice varieties in terms of grain yield, dry matter production, and nitrogen uptake and transport. The results showed that L-GPC varieties had higher grain yield and dry matter production, but lower nitrogen uptake during the grain-filling period compared to H-GPC varieties. GPC was mainly influenced by the amount of nitrogen available for grain development per unit sink capacity.
Article
Agriculture, Multidisciplinary
Ke Zhang, Xia Liang, Yushu Zhang, Xiaojun Liu, Yongchao Tian, Yan Zhu, Weixing Cao, Deli Chen
Summary: The study found that nitrogen fertilizer application in the middle and lower reaches of the Yangtze River in China leads to increased N2O emissions, but adjusting nitrogen fertilizer application strategies can improve nitrogen use efficiency and rice yield.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2022)
Article
Agronomy
Huanhe Wei, Tianyao Meng, Jialin Ge, Xubin Zhang, Tianyi Shi, Enhao Ding, Yu Lu, Xinyue Li, Yuan Tao, Yinglong Chen, Min Li, Qigen Dai
Summary: Dense planting can increase rice grain yield and nitrogen use efficiency in Jiangsu, especially for japonica rice cultivars. Increased panicles per square meter, sink-filling efficiency, harvest index, and NSC remobilization after heading under dense planting contribute to a grain yield similar to conventional high-yielding practice.
Article
Agronomy
Wenlong Yang, Kai Wang, Shengming Xia, Ting Du, Yifan Fu, Yuanzhu Yang, Fei Wang
Summary: This study investigated the relationship between grain yield and eating quality in hybrid rice varieties. The results showed that hybrid varieties with Longke638S as the female parent had higher yield but lower eating quality compared to those with Jing4155S as the female parent. The higher yield of Longke638S hybrids was attributed to higher biomass production and N uptake, while their lower grain quality was mainly due to lower amylose content and alkali spreading value. Furthermore, candidate genes involved in grain starch biosynthesis were differentially expressed between different hybrid varieties. Overall, this study provided insights into the physiological and molecular traits that influence grain yield and eating quality in hybrid rice varieties.
Article
Plant Sciences
Tajamul Hussain, David J. Mulla, Nurda Hussain, Ruijun Qin, Muhammad Tahir, Ke Liu, Matthew T. Harrison, Sutinee Sinutok, Saowapa Duangpan
Summary: This study evaluated the ability of CSM-CERES-Rice model to determine the optimal N fertilization rate for different sowing dates of upland rice. The model performed well in calibration and validation, and could be used to determine the economically optimal N fertilization rate for different sowing windows, maximizing the productivity and profitability of upland rice production.