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Experiment code
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21.2.3.41 |
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Experiment Title
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Impact of spacing and nitrogen levels on growth and yield of hybrid rice (Oryzae sativa L.) |
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Research Type
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State Trial |
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Experiment Background
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Rice (Oryza sativa L.) is one of the world’s major cereal crops and is a staple food for more than half of the world’s population. With rapid economic development and continuous population growth, demands and requirements for food are increasing, and there is more demand for rice.
N is the most important element during the growth and development of rice and is crucial to the formation of yield and quality (Cong et al., 2017). N deficiency in rice may lead to reduced resource utilization, productivity and profitability (Hussain et al., 2022). Therefore, people tend to increase the amount of N applied to compensate for the N nutrient needs of rice grown in areas with low soil total N content; however, too much N application may cause problems such as reduced grain yield and quality (Hussain et al., 2023 and Zhu et al., 2017). Most studies have shown that under high-N supplies, rice’s nutritive growth period is prolonged relative to the reproductive growth period, which results in symptoms such as late maturity, plant collapse, a lower percentage of filling and ineffective tillering (Nangju et al., 1970 and Vergara et al., 1964). Therefore, the rational application of N can improve the utilization rate of N fertilizer, reduce costs and improve yield and quality.
In addition to N application, planting density is also an important factor affecting rice growth and yield (Zhou et al., 2018). An appropriate planting density is conducive to the utilization of resources by rice. Several studies have shown that reasonable dense planting can optimize the quality of the rice, plant population structure and coordinate the environment for individual development, thus achieving high yield and high quality (Zhou et al., 2018 and Tian et al., 2017). The optimization of N application and planting density based on soil N fertility levels is essential to achieve the maximum yield and rice quality (Gong et al., 2022). Keeping all these points in view, the present studies are under taken. |
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Experiment Group
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Natural Resource Management |
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Unit Type
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(01)RESEARCH UNIT |
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Unit
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(55)REGIONAL RICE RESEARCH STATION (VYARA) |
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Department
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(274)Regional Rice Research Station, NAU, VYARA |
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BudgetHead
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(321/12908/00)321/07/REG/02114 |
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Objective
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- To find out the effect of spacing and nitrogen levels on growth attributes of hybrid rice.
- To find out the effect of spacing and nitrogen levels on yield attributes and yield of hybrid rice.
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Season
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Kharif |
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Location Unit Type
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(01)RESEARCH UNIT |
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Location Unit
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(55)REGIONAL RICE RESEARCH STATION (VYARA) |
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Location Department
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(274)Regional Rice Research Station, NAU, VYARA |
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Plot No
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B-4 |
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PI Name
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(NAU-EMP-2011-000702)VIPULKUMAR PRANJIVANBHAI PATEL |
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PI Email
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vppatel13@nau.in |
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PI Mobile
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8469417374 |
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Year of Approval
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2025 |
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Commencement Year
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2025 |
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Completion Year
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2027 |
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Design of Experiment
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FRBD
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Crop Spacing (cm x cm)
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As per treatment
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Gross Plot (m x m)
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5.4 X 3.6 |
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Net Plot (m x m)
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4.8 x 3.0 |
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Total Experiment Area (m2)
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583.2 |
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Plot History Last Three Year
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Year/ Season
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Rabi/Summer
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Kharif
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2023
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Rice
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Rice
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2024
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Rice
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Rice
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2025
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Rice
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Rice
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Initial Soil Sample Analysis Report
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Initial Soil Sample Analysis Report Attachment
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Attachment Not Available!
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Layout Plan
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33 m
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41 m
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R-III
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R-II
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R-I
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43 m |
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T7
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2.0 m
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T5
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T8
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T4
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T10
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2.0 m
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T3
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1.0 m
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T6
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T2
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T7
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T3
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T8
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T5
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T10
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T3
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T9
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T2
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T6
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T1
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T8
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T1
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T10
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T5
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T9
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T4
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T9
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T4
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T6
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T1
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T7
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T2
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41 m
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Layout Plan Attachment
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Attachment Not Available! |
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Treatment
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Main factor (N):
Sub factor (S):
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:
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Nitrogen level
N1:100 kg/ha
N2:120 kg/ha
N3:140 kg/ha
Spacing
S1: 15 x 15 cm
S2: 20 x 15 cm
S3: 30 x 15 cm
Note:
- Basal application of P2O5 (30 kg/ha) in all treatment combination.
- Source of fertilizers for Nitrogen are Urea, for Phosphorus SSP.
- Split application of N: 40 % as Basal, 40% at 20-25 DAP (Active tillering stage) & 20% at 40-45 DAP (Panicle initiation)
- Common application of FYM @ 10 t/ha or Biocompost @ 5 t/ha
- Seed rate is as per treatment (spacing)
- “Absolute control” is taken besides treatments
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Treatment Attachment
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Attachment Not Available! |