Presentation on theme: "Growth Stages of the Rice Plant"— Presentation transcript:
1 Growth Stages of the Rice Plant Part 1: Understanding the PalayCheck System
2 We can observe the changes in their growth stages. We can’t talk to our plants, or even ask them.So how do we know what they need and when they need them?Hey, how are you?We can observe the changes in their growth stages.
8 Stage 0 Germination to emergence Embryo starts to germinate Variety, temperature, water and air affects growthEnd of stage 0:3 DAS first leaf appears
9 Stage 1SeedlingLeaves continue to develop at the rate of 1 every 3-4 days during the early stage.Secondary adventitious roots replace the temporary radicle.20 to 25 -day-old seedling ready for transplanting.
10 Stage 2 Tillering Tillers displace a leaf as they grow and develop Extends from first tiller to maximum tilleringAt maximum tiller stage, some tillers die or level off
11 Stage 3Stem elongationBegins before panicle initiation in late-maturing varietiesIn short-duration varieties, stem elongation and panicle initation occur simultaneously.
13 Stage 4 Panicle initiation to booting Panicle at 7-10 days after initiationStage 4Panicle initiation to bootingBegins with panicle primordium initiation at the tip of growing shootEnd of stage 4: young panicle is about to emergeSpikelets become distinct.‘Pagbubuntis’You may get a shoot and open it, showing the spikelets, to know if seedling is at booting stage (nagbubuntis)
14 Stage 5 Heading ‘Head’ of the grain shows up 50% of the panicles have exertedUsually takes days for all plants to complete heading
15 Stage 6 Flowering ‘Anthesis’-- flowering At flowering, the florets open, anthers protrude, pollen is shedflorets then closeOccurs about 25 days after visual panicle initiationPlant is most sensitive to stress
22 This farmer, Manong Fred… At which stage/s do my plants need water?
23 Which do you think are the stages where plants need water? Germination to emergenceSeedling stageTilleringStem elongationPanicle initiation to bootingHeadingFloweringMilk grainDough grainMature grainYou may do this as a group activity. Ask participants to defend their answers. If it is a group activity, ask a representative to report and defend their answers.
24 Stage 0 Management Considerations: Germination to emergence Water Waking the seedMetabolic activitiesTranslocation of foodProper soaking of seedsTemperatureHasten activitiesAbove 40C no germinationBelow 10C no germinationIDEAL 30CAirRespirationLimited oxygen in waterSlow growthWeak seedlingsSTAGE 0
25 Stage 1 Management Considerations: Seedling Care of seedlings in the seedbedSufficient waterFertilizer application at 10 DASSeedling pullingAvoid stressSTAGE 1TransplantingMinimize transplanting shock
26 Stage 2 Management Considerations: Tillering Water management 3-5 cm water depthNutrient managementSufficient P-fertilizer (early tillering)Sufficient N-fertilizer (mid-tillering)Weed management
27 Stage 3 Management Considerations: Stem elongation - Variety selection - Time of planting
28 Stage 4 Management Considerations: Panicle initiation to booting - sufficient K-fertilizer- 5-7cm water depthTHINK: Drinking too much water will be bad for you; drinking less than what you need will be too.
29 Stage 5 Management Considerations: Heading -manage drought, it will cause significant yield-protect plants from diseases, especially Blast
30 Stage 6 Management Considerations: Flowering -manage drought -temperature-strong wind and rainWhat do you think happens whenthere is not enough water at this stage?Basic science tells us that water is essential in growth. Water will be essential for grain filling.
31 Stage 7 Management Considerations: Milk grain -manage rice bug; rice bug is destructive at this stage
32 Stage 8Dough grainManagement Considerations:- drain water
33 Stage 9 Management Consideration: Mature grain - harvest at % grain maturity or when most of the grains are golden yellow
34 Which do you think are the stages where plants need water? Germination to emergenceSeedling stageTilleringStem elongationPanicle initiation to bootingHeadingFloweringMilk grainDough grainMature grainBut not so much; too much can reduce tillering.
35 CREDITS Mr. Alfred Real Note: Instructional presentation designer: Ms. Ella Lois T. Bestil and Mr. Alfred RealSources of technical content/reviewers of presentation:Mr. Alfred RealNote:Adapted from a powerpoint presentation developed by: Mr. Alfred RealYou may use, remix, tweak, For more information, visit:& build upon this presentation non-commercially. However, always use with acknowledgment.Unless otherwise stated, the names listed are PhilRice staffers.Produced in 2011.Text: