Leaf color chart based nitrogen management in spring rice
Journal: Fundamental and Applied Agriculture (Vol.7, No. 4)Publication Date: 2022-12-31
Authors : Shreeya Adhikari; Shrawan Sah; Sasmita Gautam; Dikshya Subedi; Shambhu Katel;
Page : 368-376
Keywords : Spring rice; Leaf Color Chart (LCC); Nitrogen management; Oryza;
Abstract
A field experiment on LCC-based N management was carried out at Rajapur, Bardiya during the spring season of 2021 to determine the growth and productivity of spring rice varieties. The experiment was laid out in strip plot design with three replications. The treatment consisted of four varieties (Chaite-5, Hardinath-1, Hardinath 1-F1, and Hardinath-3) in horizontal plots and five levels of LCC-based N management practices (Pure LCC, 25% N (basal) + LCC, Recommended dose of fertilizer in three splits, Farmer's dose, and no nitrogen) in vertical plots. The results showed that Pure LCC-based nitrogen management produced the highest grain yield (6.24 t ha-1) followed by 25% N basal +LCC (5.77 t ha-1). LCC-based treatments produced a significantly higher yield than recommended dose applied in three splits. The higher yield in pure LCC was because of higher yield attributes like effective tillers m-2, higher thousand-grain weight, lower sterility percentage, longer panicle length, and higher panicle weight. Hardinath-3 and Hardinath 1-F1 with pure LCC produced significantly higher yields than other treatment combinations. The spring rice varieties Hardinath 1-F1 and Hardinath-3 were high yielders than Hardinath-1 and Chaite-5. The higher yield of Hardinath-3 was due to higher number of effective tillers m-2, longer panicle length, and higher panicle weight. Similarly, the higher yield of Hardinath1-F1 was mainly due to higher thousand-grain weight and higher number of effective tillers m-2 as compared to other varieties except for Hardinath-3. The varieties Hardinath 1-F1 and Hardinath-3 with pure LCC-based N management were high-yielders in Bardiya-like climatic conditions.
Other Latest Articles
- Optimizing rate and time of nitrogen application for reducing nitrogen requirement and increasing productivity of wheat
- Factor determinants of fruits consumption level in a peri-urban area of Bangladesh
- Effect of salinity on seed germination and seedling growth of tomato
- Parent selection for hybridization in chili (Capsicum annuum L.) using multivariate analysis and K-means clustering
- Improvement of growth, yield and quality of banana cv. Grand Naine by application of potassium humate
Last modified: 2023-07-27 01:52:04