scholarly journals Studies on the Emergence of Rice Seedlings in the Direct-Sowing Culture. : 1. On the elongation of plumule through soils after germination.

1966 ◽  
Vol 34 (3) ◽  
pp. 237-242 ◽  
Author(s):  
Jun INOUYE ◽  
Tsukuda KATAYAMA
Keyword(s):  
Rice Seedlings ◽  
Direct Sowing

scholarly journals ​Development and Performance Evaluation of a Two-row Mechanical Paddy Transplanter

2021 ◽  
Author(s):  
Sapunii Sebastian ◽  
E.V. Thomas
Keyword(s):  
Field Capacity ◽  
Machine Construction ◽  
Asian Countries ◽  
Rice Seedlings ◽  
Huge Amount ◽  
Hilly Region ◽  
Actual Field ◽  
And Performance ◽  
Four Bar Linkage ◽  
Direct Sowing

Background: Paddy is one of the most important staple food in most south-east Asian countries. It is grown either by direct sowing or by transplanting under wetland conditions depending upon the availability of water. India produces 116.48 million tonnes of rice with a productivity of 2659 kg ha-1. Manual transplanting of rice seedlings by hand is generally done in stooping posture which is laborious and drudgery. It also requires a huge amount of labour during peak season. Considering the need and to suit the hilly region, a two-row manually operated paddy transplanter was developed. Methods: For picking the seedlings, a four-bar mechanism was selected as the basis of design. The machine construction consists of a float, seedling tray, fixed-fork type finger, chain sprocket system and lugged wheel. For operation, the operator has to rotate the crank handle which transmits the motion through the chain sprocket system and four-bar linkage which in turn picks the seedlings and plants them onto the soil. Result: The machine was tested in the actual field condition and was working satisfactorily. The designed fixed fork-type finger can hold 5 to 8 seedlings at a time. The developed machine was found to be comfortable working at a speed of 0.5 kmph. The actual field capacity of the machine was 0.02 ha/h.

scholarly journals Establishment of Rice Seedlings by Direct Sowing of Multiple Seed Pellets on Paddy Soil Covered with Legume Living Mulch

2008 ◽  
Vol 11 (3) ◽  
pp. 361-365 ◽  
Author(s):  
Naomi Asagi ◽  
Hideto Ueno ◽  
Hiroyuki Sekiya ◽  
Hitoshi Ogiwara
Keyword(s):  
Paddy Soil ◽  
Rice Seedlings ◽  
Living Mulch ◽  
Direct Sowing

Distribution of phenolic compounds in rice seedlings under Cr ex- posure

2017 ◽  
Vol 2 (2) ◽  
pp. 29-36
Author(s):  
Xiao-Zhang Yu ◽  
◽  
Fei-Fei Zhang ◽  
Keyword(s):  
Phenolic Compounds ◽  
Rice Seedlings

REHABILITATION OF THE SOIL STRUCTURE WITH THE DIRECT SOWING IN THE STAVROPOL REGION DRY ZONE

1970 ◽  
pp. 27-31
Author(s):  
V. P. Belobrov ◽  
S. А. Yudin ◽  
V. А. Kholodov ◽  
N. V. Yaroslavtseva ◽  
N. R. Ermolaev ◽  
...  
Keyword(s):  
Cover Crops ◽  
Soil Surface ◽  
Plant Residues ◽  
Agricultural Technologies ◽  
Row Crops ◽  
Dry Zone ◽  
Erosion Effect ◽  
Stavropol Region ◽  
Dry Conditions ◽  
Direct Sowing

The influence of different systems of soil cultivation is considered - traditional (recommended) technology and direct sowing, which is increasingly used under dry conditions of the region. The rehabilitation of the degraded southern chernozems and dark chestnut soils structure during 13 and 7 years of direct sowing, respectively, has not been established. It takes much longer to rehabilitation the aggregate state of soils, which is currently in a critical condition of the content of aggregates> 10 mm in size and the sum of agronomically valuable aggregates. The soils under 60-year treeline, as a control, showed a satisfactory range of aggregates, which indicates a high degree of soil degradation in the past and a long period of their recovery time. The effectiveness of direct sowing usage in the cultivation of a wider range of grain and row crops (winter wheat, sunflower, peas, chickpeas, rapeseed, buckwheat, corn) is due to the peculiarities of agricultural technologies. Abandoning of naked fallows and soil treatments with the simultaneous use of plant residues and cover crops on the soil surface between the harvest and sowing of winter crops provides an anti-erosion effect and, as a consequence, a decrease in physical evaporation, an increase in moisture and biota reserves, an increase in microbiological processes, which are noted in the form trends in improving the agrochemical and agrophysical properties of soils.

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