ORIGINAL RESEARCH
Impact of Different Cropping Methods
Coupled with Nitrogen and Zinc on Growth
Parameters and Total Yield in Rice
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1
College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
2
The University of Agriculture Peshawar, Pakistan
3
Key Laboratory of Crop Genetics and Physiology of Jiangsu Province, Key Laboratory of Crop Cultivation
and Physiology of Jiangsu Province, College of Agriculture, Yangzhou University, Yangzhou 225009, China
4
Centre for Animal Sciences and Fisheries University of Swat
5
Department of Chemical, Pharmaceutical and Agricultural Sciences (DOCPAS), University of Ferrara,
44121 Ferrara, Italy
6
State Key Laboratory of Crop Stress Adaptation and Improvement, Plant Germplasm Resources
and Genetic Laboratory, School of Life Sciences, Henan University, Kaifeng, China
7
Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
8
College of Horticulture, South China Agricultural University, Guangzhou 510642, China
Submission date: 2024-05-14
Final revision date: 2024-07-13
Acceptance date: 2024-09-02
Online publication date: 2024-12-10
Corresponding author
Waqar Khan
College of Horticulture, South China Agricultural University, 510642, Guangzhou, China
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ABSTRACT
The rice transplantation method is still the predominant cultivation practice. However, with
increasing water scarcity, high-cost production, and adverse effects on soil health and the surrounding
environment, alternative crop production methods should be practiced for sustainable rice production.
In the current study, we evaluated the transplantation and direct seeding rice cultivation methods under
different nitrogen (N) and zinc (Zn) fertilization rates. We used four different input rates for both N
(i.e., N0 = 0 kg ha-1, N1 = 90 kg ha-1, N2 = 120 kg ha-1, and N3 = 150 kg ha-1) and Zn (Zn0 = 0 kgha-1,
Zn1 = 5 k g h a-1, Z n2 = 10 k g h a-1, a nd Z n3 = 15 k g h a-1). The results showed that the transplantation
rice method coupling with N3 and Zn2 substantially improved yield and yield-related components
compared to the direct seeded method and other fertilizer treatments. Considering weed density and
non-productive tillers, the transplantation rice method coupled with N3 and Zn2 recorded lower weed
density and non-productive tillers as compared to the direct seeded rice method coupled with nitrogen
and zinc fertilization treatments. The transplantation method with N3 and Zn2 significantly improved
leaf area index, leaf area duration, net assimilation rate, and photosynthetically active radiation in comparison to other treatments applied. Furthermore, the transplantation rice method recorded higher
economic returns compared to the direct seeded rice method. It was concluded from the findings of this
study that the transplantation rice method, along with a suitable amount of N and Zn fertilizers, could
enhance yield-related components, leading to higher production and substantially higher net income.
While the transplantation method showed promising results, future research should explore ways to
address the challenges of the direct seeding method, such as managing weed density and non-productive
tillers, to make it a viable alternative for sustainable rice production.