Results 1 to 10 of about 2,326 (155)

Topping influences crop photosynthesis and alters the absorption and redistribution of nutrients: a case study of tobacco [PDF]

Frontiers in Plant Science
Topping eliminates apical dominance in tobacco, enhancing the quality of the upper leaves. However, the mechanisms by which topping influences photosynthesis and the leaf structure, and regulation of chemical composition remain unclear.
Nuo Shi, Heng Yao, Ge Wang, Gaokun Zhao, Yuping Wu, Guanghai Zhang, Guanghui Kong, Na Wang, Yuxiang Bai, Yu Du, Dingchun Zi, Limei Zhang, Tikun Zhang, Yongping Li, Peng Zhou   +14 more
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Different Concentrations of Chemical Topping Agents Affect Cotton Yield and Quality by Regulating Plant Architecture

Agronomy, 2023
Manual removal of the main stem tips of cotton (Gossypium hirsutum L.) is a traditional topping approach in China. However, chemical topping has become an inevitable trend.
Yanqin Wu, Jiyuan Tang, Jingshan Tian, Mingwei Du, Ling Gou, Yali Zhang, Wangfeng Zhang   +6 more
doaj   +3 more sources

Comparison and screening of chemical topping agents for optimizing root-shoot coordination, photosynthetic efficiency and yield in south of the Tianshan mountains in Xinjiang [PDF]

Frontiers in Plant Science
BackgroundAlthough chemical topping agents are now widely used in cotton production, there is a lack of research on screening specialized formulations tailored to the unique ecological conditions of cotton region south of the Tianshan Mountains in ...
Yu Xiao, Yu Xiao, Xiaofeng Wang, Xiaofeng Wang, Huqiang Li, Huqiang Li, Jiao Lin, Jiao Lin, Qiang Hu, Qiang Hu, Hongqiang Dong, Hongqiang Dong, Zhiguo Zhou, Mingwei Du, Nan Cao, Nan Cao, Sumei Wan, Sumei Wan   +17 more
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Optimal combination of canopy management and planting density for yield enhancement in late-sown cotton [PDF]

BMC Plant Biology
Background Cotton growers often face reduced yield and fiber quality after wheat harvest due to the shortened growing season. The delay in wheat harvest is due to a number of reasons, such as labor unavailability, weather, and machinery constraints.
Muhammad Abu Bakar Hayat, Fahd Rasul, Muhammad Zia Ul Haq, Muhammad Talha Aslam, Muhammad N. Sattar, Sallah A. Al Hashedi, Abdul Ghafoor, Muhammad Munir   +7 more
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Effects of chemical topping on cotton development, yield and quality in the Yellow River Valley of China

Journal of Integrative Agriculture, 2022
Topping is a cultivation method that is widely practiced due to the indeterminate growth character of cotton (Gossypium hirsutum L.). Among the different methods of accomplishing topping, manual topping is common in the Yellow River Valley of China ...
Ling-xiao ZHU, Lian-tao LIU, Hong-chun SUN, Yong-jiang ZHANG, Ke ZHANG, Zhi-ying BAI, An-chang LI, He-zhong DONG, Cun-dong LI   +8 more
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Cotton maturity and responses to harvest aids following chemical topping with mepiquat chloride during bloom period

Journal of Integrative Agriculture, 2022
Early maturity, complete defoliation and boll opening are essential for the efficient machine harvesting of cotton. Chemical topping, involving one extra application of mepiquat chloride (MC) in addition to its traditional multiple-application strategy ...
Hai-kun QI, Ming-wei DU, Lu MENG, Liu-wei XIE, A. Egrinya ENEJI, Dong-yong XU, Xiao-li TIAN, Zhao-hu LI   +7 more
doaj   +3 more sources

Comparison of the Effects of Chemical Topping Agent Sprayed by a UAV and a Boom Sprayer on Cotton Growth

Agronomy, 2022
In order to improve the spraying efficiency of cotton chemical topping agents, a field experiment was conducted to compare the effects of 250 g·L−1 mepiquat chloride aqueous solutions sprayed by a T30 unmanned aerial vehicle (UAV) and a boom sprayer. The
Zechen Dou, Zhihao Fang, Xiaoqiang Han, Yapeng Liu, Li Duan, Muhammad Zeeshan, Muhammad Arshad   +6 more
doaj   +3 more sources

Effect of Chloride Salicylic Acid Ionic Liquids on Cotton Topping and High-Temperature Resistance

Agronomy, 2023
Chemical topping involves using plant growth regulators to facilitate the rapid transition of cotton into reproductive growth, similar to manual topping (MT), thereby enhancing cotton yield.
Yuxi Ji, Jie Liu, Bin Hao, Ruichuan Xu, Jianwei Zhang, Haibing Xiao, Sumei Wan, Guodong Chen, Hongqiang Dong   +8 more
doaj   +3 more sources

Chemical Topping and Planting Density Interactively Affect Cotton Growth and Partitioning Index

Agronomy
Due to the labor shortage, replacing manual topping with chemical topping has become an important practice in cotton-producing areas such as Xinjiang, China. Similarly, increasing planting density is a common strategy to enhance cotton yields. This study
Yutong Zhang, Yongfan Chen, Shuai Sun, Pengzhong Zhang, Zeshan Zhang, Xuejiao Wang, Xuelian Tang, Mingfeng Yang, Dao Xiang, Sen Wang, Fen Ji, Lizhen Zhang   +11 more
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Comparative analysis of physiological and biochemical traits in tobacco leaves of varying quality during development [PDF]

Frontiers in Plant Science
IntroductionDuring tobacco growth and development, variations in environmental conditions and cultivation practices can lead to the emergence of low-quality tobacco leaves (multi fertilizer and reviving tobacco leaves).
Yue Yang, Yue Yang, Ou Chen, Weimin Guo, Yunfei Ma, Yi Chen, Yonglei Jiang, Nan Shi, Dongfang Zheng, Wanpeng Xi, Binbin Hu   +10 more
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