Exploitation of Hybrid Vigour in Rice Hybrid (Oryza sativa L.) Through Green Manure and Leaf Colour Chart (LCC) Based N Application

Ravi, Samathmika; Ramesh, S.; Chandrasekaran, B.

doi:10.3923/ajps.2007.282.287

Cited by 16 publications

(7 citation statements)

References 3 publications

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“…These economic findings corroborate the findings of Sarnaik [17], Ravi et al [18], Stalin et al [19] who also reported that the adoption of real-time N management viz., LCC 4 -based N management is a profitable proposition for N fertilization strategy in rice. Similar result also reported by Kadiyala et al [20], Naresh et al [21] and Kumar et al [22][23][24][25][26][27][28][29][30][31].…”

Section: Benefit: Cost Ratiosupporting

confidence: 90%

Effect of Planting Techniques and Nitrogen Scheduling on Productivity and Profitability of Basmati Rice (Oryza sativa L.)

Kumar

Naresh

et al. 2021

IJPSS

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Aim: The present experiment was carried out at Crop Research Center of Sardar Vallabhbhai Patel University of Agriculture & Technology, Meerut (U.P.), India, to study the effect of planting techniques and nitrogen scheduling on scented wet rice, water productivity and soil health in Inceptisol during kharif season of 2019 and 2020. Study Design: Experiment was laid out in split plot design (SPD) using crop planting techniques as main plot and nitrogen scheduling as sub plot factor. Place and Duration of Study: The present investigation was conducted during the kharif season of 2019 and 2020 at the Crop Research Centre of Sardar Vallabhbhai Patel University of Agriculture & Technology, Meerut (U.P.), India. Methodology: The main factors consist of four planting techniques viz., Furrow Irrigated Raised Bed System (FIRBs), Reduced Tillage Transplanted Rice (RT-TPR), Unpuddled Transplanted Rice (UTR) and Conventional Transplanted Rice (CTR), the sub factors consist of six nitrogen scheduling variables viz., Control, 100% RDN (50% B + 25% AT + 25% PI), 100% RDN (40% B + 35% AT + 25% PI), 120% RDN (50% B + 25% AT + 25% PI), 120% RDN (40% B + 35% AT + 25% PI) and Real Time N Management through LCC. Observations on crop yield and attributing parameters were recorded at the harvest of crop. Crop was harvested manually at full physiological maturity. The straw yield was obtained by subtract grain yield from the total biomass yield, recorded plot wise after sun drying and computed to q ha-1. Results: Highest yield recorded under conventional transplanting which was statistically at par with FIRBs and significantly higher than UTR and RT-TPR. Among the nitrogen scheduling practices the highest yield and NPK uptake was obtained with Real Time N Management through LCC which was statistically at par with 120% RDN (50% B + 25% AT + 25% PI) and 100% RDN (50% B + 25% AT + 25% PI), lowest yield and nutrient uptake was obtained in control treatment during both the years of study. Highest net return and B: C ratio was recorded under furrow irrigated raised beds transplanted rice. Conclusion: Basmati rice gave the higher yield under CTR and net return was associated with FIRBs. Therefore, it may be concluded that transplanting of rice on FIRBs with real time nitrogen management through LCC might be a better option to get higher productivity and profitability of basmati rice.

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Section: Benefit: Cost Ratiosupporting

confidence: 90%

Effect of Planting Techniques and Nitrogen Scheduling on Productivity and Profitability of Basmati Rice (Oryza sativa L.)

Kumar

Naresh

et al. 2021

IJPSS

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“…LCC treatments indicated that Nmanagement based on LCC shade 4 helped avoid over application of N. Critical value of LCC 4 was more beneficial in enhancing the growth and agronomic, physiologic and internal efficiency [5]. It is suggested that when Nmanagement technology such as real time Nmanagement (SPAD and LCC) were used, would avoid to over application of N fertilizer by rice farmers [18,19,20,21]. The optimal SPAD threshold for determining the timing of Napplication was 35.…”

Section: Resultsmentioning

confidence: 99%

Effect of Different N Management on Improving N Efficiency in Rice- tarom Variety

Valinejad

Vaseghi

2021

ASRJ

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The chlorophyll meter (SPAD) and leaf colour chart (LCC) are simple, portable diagnostic tools that can measure the crop N status in situ in rice fields to determine the timing of N top dressingAn experiment was carried out in Rice Research Institute in Mazandaran, in 2019. A test material has been evaluated in a Randomized Complete Block Design with three replications. Tarom variety were grown under eight treatments at plant density of 25*25 cm. Eight treatments included a zero-N control, o splits, chlorophyll meter 35, 37, 40, LCC 4 and 5. Result showed that Both LCC and SPAD can be used to improve N management for rice. The optimal SPAD threshold for determining the timing of N-application was 35. LCC treatments indicated that N-management based on LCC shade 4 helped avoid over application of N. Critical value of LCC 4 was more beneficial in enhancing the growth and agronomic, physiologic and internal efficiency. It is suggested that when N-management technology such as real time N-management (SPAD and LCC) were used, would avoid to over application of N fertilizer by rice farmers. The objective of this study is to determine critical threshold SPAD and LCC value of Tarom variety of rice(Oyiza Sativa L).

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“…(2017) [11] and Ravi et al (2007) [12] . Treatments imposed based on LCC-4 resulted in more P-uptake than farmers practice and recommended method.…”

Section: Effect Of Lcc Based N Management On Soil Physicochemical Properties and Nutrient Availabilitymentioning

confidence: 99%

Leaf Colour chart-based nitrogen management-Impact on soil properties and nutrient uptake of short duration transplanted rice

Bhavana¹,

Laxminarayana²,

Latha³

et al. 2020

Int. J. Chem. Stud.

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A field experiment was conducted during Kharif, 2018 to study the effect of LCC based nitrogen management on growth of short duration transplanted rice. Treatments included two doses of nitrogen (120 and 150 kg ha -1 ) applied on basis of two critical LCC values-3 and 4. In turn Nitrogen was applied in 3 equal splits @ 120 kg N ha -1 and (3 and 4) splits with half as basal, remaining @ 150 Kg ha -1 . LCC based treatments were evaluated against control, recommended method and Farmers practice. Results revealed that, LCC -4 was more beneficial in enhancing yield and nutrient uptake of rice. Physicochemical properties and nutrient status of soil were not unaffected by treatments. LCC-4 with 150 kg N ha -1 was superior in uptake of N, P and K (112.5, 46.8 and 115.2 kg ha -1 respectively). LCC based nitrogen application was effective in improving uptake of nutrients thus resulting in satisfactory yields.

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Exploitation of Hybrid Vigour in Rice Hybrid (Oryza sativa L.) Through Green Manure and Leaf Colour Chart (LCC) Based N Application

Cited by 16 publications

References 3 publications

Effect of Planting Techniques and Nitrogen Scheduling on Productivity and Profitability of Basmati Rice (Oryza sativa L.)

Effect of Planting Techniques and Nitrogen Scheduling on Productivity and Profitability of Basmati Rice (Oryza sativa L.)

Effect of Different N Management on Improving N Efficiency in Rice- tarom Variety

Leaf Colour chart-based nitrogen management-Impact on soil properties and nutrient uptake of short duration transplanted rice

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