Rainfed rice - IRRI books - International Rice Research Institute
Rainfed rice - IRRI books - International Rice Research Institute
Rainfed rice - IRRI books - International Rice Research Institute
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RAINFED RICE A SOURCEBOOK OF BEST PRACTICES AND STRATEGIES IN EASTERN INDIA<br />
Table 1. Cost of operation and labour requirement in direct sowing and transplanting of <strong>rice</strong><br />
Particulars<br />
1 . Cost of land preparation<br />
by tractor (Rs/ha)<br />
a . Dry system<br />
b<br />
3<br />
. Wet system 4<br />
2<br />
3 . Cost of weeding<br />
(Rs/ha)<br />
a . Hand weeding<br />
b . Weeder + intrarow<br />
hand weeding<br />
4 . Labour requirement<br />
(m-h/ha)<br />
a . Sowing/transplanting<br />
b . Weeding<br />
5 . Cost saving (%)<br />
(Rs/ha)<br />
a . Seedbed preparation<br />
in dry system<br />
instead of wet system<br />
b . Sowing/planting<br />
vs. hand transplanting<br />
c . Weeding vs.<br />
hand broadcasting<br />
or dry seeding<br />
6.<br />
a.<br />
b.<br />
. Cost of seeding/<br />
planting including<br />
inputs and nursery<br />
raising (Rs/ha)<br />
Labour saving (%)<br />
(m-h/ha)<br />
Sowing/planting<br />
vs. hand transplanting<br />
transplanting<br />
Weeding vs.<br />
hand broadcasting<br />
or dry seeding<br />
7 . Grain yield (t/ha)<br />
Direct sowing<br />
Dry system Wet system<br />
Hand Bullock Power Tractor germinated germinated<br />
broadcasting drawn tiller- seed cum seeds, seeds,<br />
(dry seed drawn ferti drill + hand manual<br />
seeding + cum ferti seed cum planking broad- <strong>rice</strong> seeder<br />
mixing) drill ferti drill x 1 casting<br />
1458<br />
1259<br />
361 3<br />
10<br />
615<br />
479<br />
(25)<br />
2257<br />
(64)<br />
–<br />
462<br />
(98)<br />
–<br />
3.1<br />
1458<br />
887<br />
3142<br />
20<br />
518<br />
479<br />
(25)<br />
2629<br />
(75)<br />
471<br />
(13)<br />
452<br />
(96)<br />
97<br />
(16)<br />
3.0<br />
1458<br />
922<br />
3142<br />
10<br />
518<br />
479<br />
(25)<br />
2594<br />
(74)<br />
471<br />
(13)<br />
462<br />
(98)<br />
97<br />
(16)<br />
3.2<br />
1458<br />
920<br />
3142<br />
5<br />
518<br />
47<br />
(25)<br />
2596<br />
(74)<br />
471<br />
(13)<br />
467<br />
(99)<br />
97<br />
(16)<br />
3.1<br />
1937<br />
663<br />
2719<br />
12<br />
446<br />
2853<br />
(81)<br />
894<br />
(25)<br />
460<br />
(97)<br />
169<br />
(27)<br />
2.9<br />
1937<br />
735<br />
2448<br />
21<br />
395<br />
2781<br />
(79)<br />
1165<br />
(32)<br />
451<br />
(96)<br />
220<br />
(36)<br />
2.8<br />
Transplanting<br />
Manual, Manual Selfrandom<br />
<strong>rice</strong> transfor<br />
hand planter<br />
transplanting<br />
1<br />
propelled<br />
<strong>rice</strong> transplanter<br />
2<br />
1<br />
May be adopted under limited field situations having better drainage and water management with well-prepared levelled fields.<br />
2<br />
Limitations for sowing with pre-germinated <strong>rice</strong> seeds in wetland puddled fields. It requires precise land levelling. The standing<br />
water must be drained before sowing and waterlogged conditions are adverse to plant emergence. Better water management is<br />
required at the initial stage of germination. For one week after sowing, the land should be kept free of standing water to prevent<br />
submergence of sprouted seeds and seedlings. However, soil should not be too dry to prevent emergence of seedlings.<br />
3<br />
Dry system: Summer ploughing x 1 + Disc harrowing x 2 + Planking x 2.<br />
4<br />
Wet system: Summer ploughing x 1 + Puddling by disc harrowing x 2 + Planking x 2.<br />
108<br />
Seed drilling<br />
Pre<br />
Pre<br />
1937<br />
3516<br />
1940<br />
472<br />
350<br />
–<br />
1673<br />
(46)<br />
–<br />
265<br />
(43)<br />
3.2<br />
1937<br />
2222<br />
1514<br />
244<br />
251<br />
1294<br />
(37)<br />
2099<br />
(58)<br />
228<br />
(48)<br />
364<br />
(59)<br />
3.5<br />
1937<br />
2047<br />
1514<br />
171<br />
251<br />
1469<br />
(42)<br />
2099<br />
(58)<br />
301<br />
(64)<br />
364<br />
(59)<br />
3.8
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