1181-Evaluation of the Urea Deep Placement (UDP) Technology in Irrigated Lowland, Direct Seeded Rice in Guyana

1,553 views
1,435 views

Published on

PowerPoint by Herman Adams, CARDI, presented at the First Workshop on the System of Rice Intensification (SRI) in Latin America at EARTH University in Costa Rica, Oct. 31-Nov. 1, 2011

Published in: Technology, Business
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
1,553
On SlideShare
0
From Embeds
0
Number of Embeds
1
Actions
Shares
0
Downloads
0
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide
  • It originated from a CIAT accession P4382F3-70 – was selected for high quality grain, drought tolerance, and high yields in upland rainfed conditions
  • This cultivar has been selected and evaluated also for grain quality, milling and eating characters
  • Check on plant height as opposed to panicle length
  • Panoramic view of UDP trials before flowering; note different shades of green colour due to the different rates of N
  • THANK YOU!
  • 1181-Evaluation of the Urea Deep Placement (UDP) Technology in Irrigated Lowland, Direct Seeded Rice in Guyana

    1. 1. A CARDI PROJECT Prepared for the First International Workshop on Intensive Rice Production Sponsored by Cornell and EARTH Universities, Las Mercedes, Costa Rica 31 October – 1 November 2011 Evaluation of the Urea Deep Placement (UDP) Technology in Irrigated Lowland, Direct-Seeded Rice in Guyana Herman Adams and Bruce Lauckner, Collaborators: Ghansham Payman (GRDB) and Upendra Singh (IFDC)
    2. 2. OBJECTIVE <ul><li>The objective of the rice trials is t o evaluate the UDP technology in the Caribbean by comparing it with the conventional method of broadcasting urea (UB) fertiliser into the flooded field over the rice transplants. </li></ul>
    3. 3. THE CARIBBEAN
    4. 4. BURMA RICE RESEARCH STATION IN GUYANA
    5. 5. BACKGROUND <ul><li>Rice ( Oryza sativa L.) falls within the Cereal and Grain Legumes sub-programme of CARDI’s Crop Programme. </li></ul><ul><li>PROGRAMME STRATEGIC FOCI: </li></ul><ul><li>1) Genetic improvement </li></ul><ul><li>The rice variety “CARDI-70” was released in Belize in 1988. </li></ul><ul><li>2) Agronomic improvement </li></ul><ul><li>The innovative UDP technology, the placement of urea briquettes 7-10 cm below the roots of 14-day-old rice seedlings, has raised grain yields by 25% and reduced losses in N from 65% down to almost zero, in Bangladesh and Vietnam (IFDC). </li></ul>
    6. 6. METHODOLOGY <ul><li>Location: Burma Rice Research Station – </li></ul><ul><li>Soils: frontland clays; </li></ul><ul><li>Mean Annual Temperature:19.8°C – 33.5°C; Mean annual rainfall: 2298 cm </li></ul><ul><li>Design: RCB </li></ul><ul><li>7 treatments in a 3*2 factorial (UB and UDP); </li></ul><ul><li>Control = 0 Nitrogen </li></ul><ul><li>Time of application: UDP – 12-14 DAS and UB - conventional 3 split apps </li></ul><ul><li>Replications: 4 </li></ul>
    7. 7. METHODOLOGY (cont’d) Table 1 The treatments 7 field trials were conducted between 2009 – 2010 in Guyana * A single control RATES OF N (kg/ha) METHOD OF UREA APPLICATION UREA BROADCAST (UB) UREA DEEP PLACEMENT (UDP) 57 UB 57 UDP 57 84 UB 84 UDP 84 122 UB 122 UDP 122 0 Control* Control*
    8. 8. METHODOLOGY (cont’d) <ul><li>Plot size: 6 m x 8 m </li></ul><ul><li>Rice variety: G98-22-4 </li></ul><ul><li>Seed rate: 120 kg/ha </li></ul><ul><li>Analyses at harvest from nett plot (2 m x 4 m): </li></ul><ul><li>Number of tillers per m² </li></ul><ul><li>Number of panicles per m² </li></ul><ul><li>Panicle length (cm) </li></ul><ul><li>1000 grain weight (g) </li></ul>
    9. 9. METHODOLOGY (cont’d) <ul><li>Number of filled grains per panicle </li></ul><ul><li>Number of unfilled grains per panicle </li></ul><ul><li>Grain yield per nett plot (kg) </li></ul><ul><li>Total dry matter at 14% moisture content (kg) </li></ul>
    10. 10. RESULTS AND DISCUSSIONS <ul><li>Table 2 Data on grain yield (kg/ha) combined for all 7 trials </li></ul>LSD 0.05 = 514 Treatment Means Rank UB 84 3,455 I UDP 84 3,400 II UDP 122 3,380 III UB 57 3,287 IV UDP 57 3,144 V UB 122 3,124 VI Control 2,632 VII
    11. 11. Table 3 The best treatments which produced significant differences in the individual trials and for the combined data Parameters which showed significant differences Best treatments 1.Plant height in Trial # 1 UDP 57 and UB 57 2.Grain yield in Trial # 2 UDP 57 and UB 84 3.Grain yield in Trial # 3 UDP 84 and UB 57 4.Straw dry weight in Trial # 4 UDP 57 5.Filled grains in Trial # 6 UDP 57 6.Dry grain yield in Trial # 6 UDP 57 and UB 57 7.Wet grain yield in Trial # 6 UDP 57 8.Dry grain yield in Trial # 7 UDP 57 and UB 84 9.Wet straw weight in Trial # 7 UDP 57 and UB 57 10.Grain yield from combined data from all 7 trials UDP 57 and UB 57
    12. 12. CONCLUSIONS <ul><li>The best treatments were UDP 57 and UB 57; they produced the tallest plants, the highest straw weight and yields which were not significantly lower than any other treatments. </li></ul><ul><li>These treatments however had the least input of N but were significantly higher than the Control of no N. This means that these two treatments would produce good yields at a low cost of production, urea being the single most costly input. </li></ul><ul><li>No advantage was demonstrated by UDP 57 over UB 57. </li></ul>
    13. 13. CHALLENGES & OPPORTUNITIES <ul><li>Further work should measure and compare costs of production and the effects of the residual N left in the soil, for the following crop. </li></ul><ul><li>Large scale field trials are required to study costs of production. </li></ul><ul><li>The next phase should evaluate mechanised minimum-till sowing with simultaneous placement of fertiliser briquettes (UDP) with plant nutritional needs during the entire cropping cycle. </li></ul>
    14. 14. Figure 1 Panoramic view of UDP trials before flowering; note difference in green leaf colour between plots
    15. 15. Figure 2: View of plots before harvest
    16. 16. Figure 3: Highest rate of N caused extensive lodging
    17. 17. Thank you

    ×