The yield performance of selected traditional rice cultivars grown in mid country wet zone
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Transcript of The yield performance of selected traditional rice cultivars grown in mid country wet zone
![Page 1: The yield performance of selected traditional rice cultivars grown in mid country wet zone](https://reader036.fdocuments.in/reader036/viewer/2022070520/58f27d651a28ab012c8b4577/html5/thumbnails/1.jpg)
Studies on the yield performance of selected traditional rice
cultivars grown in mid country wet zone
J.H.M.M.JayaweeraDepartment of Crop
Science University of
Peradeniya.
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Introduction
Oryza sativa
• Staple food• Employment
Production surplus
Can’t export-low quality
Low potential
High cost for NIV-
pest disease weeds
Lack of research
Traditional Verities with
diversityTraditional varieties
with low cost
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Introduction
Oryza sativa • Staple food• Employment
Production surplus
Can’t export-low quality
Low potential
High cost for NIV-
pest disease weeds
Lack of research
Traditional Verities with
diversityTraditional varieties with low cost
![Page 4: The yield performance of selected traditional rice cultivars grown in mid country wet zone](https://reader036.fdocuments.in/reader036/viewer/2022070520/58f27d651a28ab012c8b4577/html5/thumbnails/4.jpg)
Objectives
to evaluate traditional rice varieties suitable
for mid country wet zone
General objective
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Objectives
1. To compare performance of traditional rice varieties (TRV) and new improved varieties (NIV) qualitatively and quantitatively
2. To compare performance of NIV under high in-put and low in-put conditions
Specific objectives
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Methodology• 5 treatments in 3 blocks (RCBD)T1-Baranigla with organic fertilizerT2-Kiri Murunga organic fertilizerT3-Sudu Heenati organic fertilizerT4-Kalu heenati organic fertilizerT5-Bg 300 with organic fertilizerT6-Bg 300 with chemical fertilizer • Block size – 2m*5m• Seed paddy broad cast - 75 kg/ha
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Observations• Yield• Yield components
No. panicles/m2
No. spikelets/panicleFilled grain %Potential size of grain
• Crude protein content• Paddy to rice ratio (fraction of rice)• Head rice yield (HRY)
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Yield
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No.of spikelets/panicle
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Thousand grain weight
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Crude protein content
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Ratio between rice and paddy
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Results and discussion
Treatment No.of spikelets/panicle1.Baranigala 99b
2.Kirimurunga 142b
3.Suduheenati 204a
4.Kaluheenati 105b
5.BG-300(organic fertilizer) 115b
6.BG-300(chemical fertilizer) 131b
For each harvest, means with different superscripts are significantly different (P<0.05)
Table 2: Number of spikelets per panicle of different treatments
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Treatment Thousand grain wt.(g)
1.Baranigala 25.5e
2.Kirimurunga 30.3c
3.Suduheenati 38.3a
4.Kaluheenati 32.3b
5.BG-300(organic fertilizer) 27.1d
6.BG-300(chemical fertilizer) 27.0d
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Treatment Yield (mt/ha)
1.Baranigala 3.64a
2.Kirimurunga 3.64a
3.Suduheenati 2.88c
4.Kaluheenati 1.90b
5.BG-300(organic fertilizer) 3.42a
6.BG-300(chemical fertilizer) 3.79a
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Treatment Crude protein content (%)
1.Baranigala 3.06b
2.Kirimurunga 2.87c
3.Suduheenati 3.12b
4.Kaluheenati 3.40a
5.BG-300(organic fertilizer) 2.80cd
6.BG-300(chemical fertilizer) 2.70d
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Treatment Fraction of rice
1.Baranigala 1.26cd
2.Kirimurunga 1.20d
3.Suduheenati 1.57a
4.Kaluheenati 1.43b
5.BG-300(organic fertilizer) 1.32bc
6.BG-300(chemical fertilizer) 1.20d
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Treatment Head rice yield1.Baranigala 55.59b
2.Kirimurunga 55.00b
3.Suduheenati 59.02a
4.Kaluheenati 59.25a
5.BG-300(organic fertilizer) 52.40c
6.BG-300(chemical fertilizer) 60.09a
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Conclusions
• Quality wise and quantity wise - BG-300<TRV in low potential lands
• No significant difference between compost treated and chemical fertilizer treated BG-300
• Beneficial to grow TRV in low potential paddy lands