scholarly journals Studies of Direct-Sowing Culture by Broadcasting Seeds on a Submerged Paddy Field : No. 8 Effects of the amount of fertilizer and different proportions of basic fertilizer to top dressnig on the growth and yield of rice

1968 ◽  
Vol 37 (1) ◽  
pp. 25-31
Author(s):  
Seiichi AKAMATSU
2018 ◽  
Vol 16 (4) ◽  
pp. 352-358 ◽  
Author(s):  
Junichi Kashiwagi ◽  
Koji Hamada ◽  
Yutaka Jitsuyama

AbstractDirect sowing of rice in a flooded paddy field is a beneficial cultivation practice for water use and labour efficiency, compared to the transplanted cultivation. However, a drastic reduction in seedling emergence under flooded paddy fields is a serious constraint especially when the seeds fell at deeper soil layers. Suitable rice germplasm for the direct sowing in flooded paddy fields could ensure the success of this cultivation practice. Instead of laborious field-based screening systems, a pot-based screening method was adopted for simplicity and efficient evaluation of seedling emergence of a subset of world rice germplasm (n = 75) at different sowing depths. As a result, two rice genotypes, ‘Vary Futsi’ (landrace from Madagascar, non-glutinous, subspecies Indica) and ‘Dahonggu’ (landrace from China, non-glutinous, subspecies Indica), with consistently better seedling emergence were identified from a wide range of rice germplasm. These genotypes could serve as excellent parents for the breeding program in developing new rice cultivars with the improved seedling emergence in flooded paddy fields. There were no significant differences in the seedling emergence rate in flooded paddy conditions among the groups from various agro-geographical regions.


2011 ◽  
Vol 80 (2) ◽  
pp. 213-219
Author(s):  
Katsuyuki Katayama ◽  
Tatsuo Hosono ◽  
Hisashi Hosokawa ◽  
Yukiharu Shioya ◽  
Mikio Nomura

2012 ◽  
Vol 81 (1) ◽  
pp. 49-55 ◽  
Author(s):  
Sachiko Ikenaga ◽  
Hisashi Hosokawa ◽  
Kazuhide Adachi ◽  
Satoshi Ohno ◽  
Mikio Nomura ◽  
...  

1997 ◽  
Vol 66 (3) ◽  
pp. 436-441 ◽  
Author(s):  
Matsuo ITOH ◽  
Michihiko TAKAHASHI

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