MERAL Myanmar Education Research and Learning Portal
Item
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Effects of Different Nitrogen Fertilizer Levels and Spacing on Phyllochron, Yield and Yield Components of Rice (Oryza sativa L.) under System of Rice Intensification (SRI)
http://hdl.handle.net/20.500.12678/0000000038
http://hdl.handle.net/20.500.12678/00000000385682334a-edc5-4aa4-9515-bf5b80eeb9ce
49babd5e-b74c-441e-9991-459ff6d3909d
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9 eieikhaing (70-79).pdf (805 Kb)
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Journal article | ||||||
Upload type | ||||||
Publication | ||||||
Title | ||||||
Title | Effects of Different Nitrogen Fertilizer Levels and Spacing on Phyllochron, Yield and Yield Components of Rice (Oryza sativa L.) under System of Rice Intensification (SRI) | |||||
Language | en | |||||
Publication date | 2019 | |||||
Authors | ||||||
Ei Ei Khing | ||||||
Kyaw Kyaw Win | ||||||
Than Da Min | ||||||
Soe Win | ||||||
Description | ||||||
The experiments were conducted to investigate the effects of different nitrogen levels and spacing on phyllochron until flag leaf and to determine interaction effects of different nitrogen fertilizer levels and spacing on the phyllochron, yield and yield components of rice under the system of rice intensifica-tion (SRI). Four levels of nitrogen fertilizer rate (0, 45, 85 and 125 kg N ha-1) and three spacing (15 × 15, 20 × 20 and 25 × 25 cm) were laid out in 4 × 3 factorial in randomized complete block design with three replications in both dry and wet seasons. Higher number of leaves hill-1 was observed in dry season as compared to those in wet season. Different mean values of phyllochrons were resulted from different levels of N applied and spacing in both seasons. In general, phyllochrons were shorter as in-creased of N applied. The wider spacing resulted the shorter phyllochrons. The highest nitrogen fertiliz-er rate N3 (125 kg N ha-1) and the widest spacing of S3 (25 × 25 cm) gave the higher yield, yield compo-nents and agronomic parameters than the others. But, the maximum leaf area index (LAI), leaf dry weight (LDW), total dry matter (TDM) and crop growth rate (CGR) were produced by S1 (15 × 15 cm) in both seasons. The combination effect of nitrogen fertilizer and spacing showed that the maximum yield was obtained from N3S3 (125 kg N ha-1 + (25 × 25 cm)) in both seasons. Therefore, the fertilizer rate 125 kg N ha-1 with spacing 25 × 25 cm should be used for rice to attain high grain yield under SRI. | ||||||
Keywords | ||||||
rice | ||||||
Identifier | https://yauor-yau.archive.knowledgearc.net/handle/123456789/123 | |||||
Journal articles | ||||||
Journal of Agricultural Research | ||||||
6;2 | ||||||
Conference papaers | ||||||
Books/reports/chapters | ||||||
Thesis/dissertations |