Optimizing crop quality and yield: Assessing the impact of integrated potassium management on Chinese cabbage ( Brassica rapa L. subsp. chinensis ).

Autor: Choudhary M; Department of Agronomy, College of Agriculture, G. B. Pant University of Agriculture and Technology, Pantnagar, Udham Singh Nagar, Uttarakhand, 263145, India., Kumar S; Veer Kunwar Singh College of Agriculture, Dumaraon, Buxar, 802136, Bihar, India., Onte S; Centre for Water Resources Development and Management (CWRDM), Calicut, 673571, India., Meena VK; ICAR-National Dairy Research Institute, Karnal, Haryana, India., Malakar D; ICAR-National Dairy Research Institute, Karnal, Haryana, India., Garg K; ICAR-National Dairy Research Institute, Karnal, Haryana, India., Kumar S; ICAR-National Dairy Research Institute, Karnal, Haryana, India., Rajawat MVS; Dhanuka Agritech Limited, Dhanuka Agritech Research and Technology Center, Palwal-Aligargh Road, Sihol, 121102, Haryana, India., Awasthi MK; College of Natural Resources and Environment, Northwest A&F University, Taicheng Road 3 Yangling, Shaanxi, 712100, China., Giri BS; Sustainability Cluster, University of Petroleum and Energy Studies (UPES), Dehradun, Uttarakhand, 248007, India., Jaiswal DK; Department of Biotechnology, Graphic Era (Deemed to be University), Dehradun, 248002, Uttarakhand, India., Dhar S; ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India., Azman EA; Faculty of Agriculture, Department of Crop Science, Universiti Putra Malaysia, Serdang, 43400, Malaysia., Kochewad SA; ICAR-National Institute of Abiotic Stress Management, Baramati, 413115Maharashtra, India.
Jazyk: angličtina
Zdroj: Heliyon [Heliyon] 2024 Aug 16; Vol. 10 (17), pp. e36208. Date of Electronic Publication: 2024 Aug 16 (Print Publication: 2024).
DOI: 10.1016/j.heliyon.2024.e36208
Abstrakt: Potassium, a pivotal macronutrient essential for growth, development, and crop yield, serves as a critical determinant of soil productivity. Its depletion disrupts the equilibrium of soil nutrients, prompting an investigation into integrated potassium management strategies to address this challenge. A field experiment was conducted during the winter season of 2020 using a randomized complete block design, with eight treatments, each replicated three times in Chinese cabbage ( Brassica rapa L. subsp. chinensis ). These treatments comprised standard (100 %) and reduced (75 % and 50 %) rates of the recommended dose of potassium (RDK) via muriate of potash (MOP). Variations in the inclusion and exclusion of plant growth-promoting rhizobacteria (PGPR), farmyard manure (FYM) as 25 % of the potassium recommendation, and foliar spray of nano potash were systematically implemented. Findings unequivocally demonstrated that the treatmentT 8 , involving 100 % RDK +25 % K through FYM + PGPR + nano K fertilizer spray at 25 and 40 DAS, yielded significant improvements in both green fodder (64.0 t ha -1 ) and dry fodder (7.87 t ha -1 ).Moreover, T 8 exhibited the highest values for total ash (8.75 %), total ash yield (68.9 ± 2.88 kg ha -1 ), ether extract (2.85 %), ether extract yield (22.4 ± 0.88 kg ha -1 ), crude protein (9.71 %), and total crude protein yield (76.4 ± 3.21 kg ha -1 ). Conversely, a marked reduction was observed in various fiber components and carbohydrate fractions upon application of the T 8 treatment. The lowest values of yield, crude protein content, total ash ether extract were recorded in treatment T 1 (control) applied with no potassium. This investigation underscores the inadequacy of the recommended potassium dose in achieving optimal productivity, necessitating a re-evaluation of potassium fertilization levels. The integrated approach involving FYM, PGPR, and nano potash, coupled with the recommended potassium dose through MOP, emerges as a promising avenue for augmenting both yield and quality parameters in Chinese cabbage.
Competing Interests: Authors declare that there is no conflict of interest.
(© 2024 The Authors.)
Databáze: MEDLINE
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