Abstract
Basically, there are two methods of rice plant establishment namely; transplanting and direct seeding .Direct seeding is the major method of rice planting being used in Fogera plain. However, transplanting is the major means of rice planting used in other parts of the world Therefore, field experiments were conducted in the area for two growing seasons during the 2018 and 2019 cropping years. The objective of the experiment was to study the effects of seedling age at transplanting on the yield and yield components of the crop under rain-fed condition. The treatments consists of six seedling age 0, (dry seed as a control) 7, (pre-germinated), 14, 21, 28, 35 days old seedlings were laid in RCB Design with three replications. Data were collected on yield and yield components of the crop. The data were subjected to analysis of variance using SAS software. Economic analysis was also performed to compare the economic advantage of the treatments. The results of the experiment indicated that seeding age was (p<0.001) affecting, Plant height, number of total tillers per m 2 and number of filled grain per panicle. Whereas seedling age also (p<0.01) affecting panicle length, number of filled grain per panicle and grain yield. Moreover age of seedlings for transplanting (p<0.001) affecting straw yield and thousand grain weight. The highest grain and straw yield (4.54 and 11.7 t/ha- 1 ) was obtained from 21 days old seedling age respectively. The economic analysis indicated that 21 days old seedling age was the most profitable treatment with mean net benefit of 75132.0.Birr ha- 1 . Therefore it can be concluded that twenty one days old seedling age in the nursery was appropriate and recommended for transplanting method of rice production in Fogera plain. Keywords: Seedling age, Transplanting, Low land rice, grain yield Economic analysis. DOI: 10.7176/JBAH/11-8-03 Publication date: April 30 th 2021
Highlights
Rice (Oryza sativa L.), is one of the most important food crops and is considered as a major source of calories for more than half of the global population (Carrijo et al, 2017), More than 90% of rice is produced and consumed in Asia (Subedi et al, 2019)
The shortest Plant height was observed from dry sowing treatment (74.9 and 72.9 cm) which was statistically similar in both years (Table 1 and 2) The combined analysis of variance over two years result indicated that effects of seedling age at transplanting very highly significantly affected Plant height (p
The combined analysis of variance over two years result showed that effects of seedling age at transplanting highly significantly affected Plant height (p
Summary
Rice (Oryza sativa L.), is one of the most important food crops and is considered as a major source of calories for more than half of the global population (Carrijo et al, 2017), More than 90% of rice is produced and consumed in Asia (Subedi et al, 2019). The total world rice production has risen steadily from about 200 million tons (1960) to over 678 million tons (2009). In the 2010/2011 and 2011/2012, the world paddy productions were estimated at 691.3 and 713.8 million tons, respectively. 158.9 million hectare (ha) of rice was harvested during the 2011/2012 (USDA, 2012). Rice-based cropping systems and the rice itself will, have to undergo adaptations and improvements in order to meet future demands for both food security of the growing population and environmental conservation (Asch and Brueck, 2010)
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