Growth, Yield and Yield Contributing Factors of Rice Crop as Influenced by Different Level and Methods of Irrigation in Tarai Region of Uttarakhand

Sharma, Vikas; Gunjan, Priyanka; Singh, Yadvendra Pal; Singh, Prakash

doi:10.20546/ijcmas.2019.804.126

Cited by 2 publications

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“…This study showed that compared with CF irrigation, AWD irrigation increased the productive tiller rate, promoted the increase in total dry matter from the heading to filling stage in Wanchang, and then increased the storage capacity, filled grain percentage and panicle weight, which increased the yield of rice by 9.12%-10.55%, and the production efficiency of nitrogen fertilizer increased by 9.12%-10.55%. Therefore, irrigation methods affect the yield of rice, and the conclusion was consistent with previous results on rice (Carrijo et al, 2018;Sharma et al, 2019). At the Longjing site, it was found that the coupling of water and nitrogen had a significant effect on dry matter accumulation.…”

Section: Discussionsupporting

confidence: 88%

Interaction of the coupled effects of irrigation mode and nitrogen fertilizer timing on rice yield in different regions

Cang

Ullah

et al. 2023

Irrigation and Drainage

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The production efficiency of water and nitrogen is affected by irrigation and the nitrogen rate. However, it is unclear whether there is a coupling effect of irrigation mode and the timing of nitrogen fertilizer application on rice. Therefore, a two‐year field experiment was conducted at two sites with varying cumulative temperatures from 2018 to 2019. The effects of irrigation mode and nitrogen fertilization timing on rice yield and related physiological parameters were examined in different regions. The results showed that sites with different average temperatures had different coupling effects of water and nitrogen on crop growth. The impact of irrigation mode on yield was greater than that of nitrogen fertilizer timing at the site with a 2800 °C annual cumulative temperature (Wanchang). Alternate wetting and drying irrigation increased yield, water production efficiency and nitrogen production efficiency by 8%–10%, 31%–37% and 8%–10%, respectively. In the site with a 2500 °C annual cumulative temperature (Longjing), the coupling effect of irrigation method and nitrogen fertilization timing was significant, and continuously flooded irrigation combined with nitrogen fertilizer (40%:30%:20%:10%) improved rice yield and production efficiency by delaying senescence of leaves and increasing dry matter translocation. The results indicate that combining temperature to explore the optimal coupling mode of irrigation and nitrogen is a promising cropping technique to improve crop productivity and production efficiency in northeastern China.

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Section: Discussionsupporting

confidence: 88%

Interaction of the coupled effects of irrigation mode and nitrogen fertilizer timing on rice yield in different regions

Cang

Ullah

et al. 2023

Irrigation and Drainage

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“…The grain yield of early crop increased significantly with a magnitude of 1.02 and 1.09 times more than that of 10 and 25 July planting, respectively, as revealed by the pooled analysis. Increased grain yield of early crops might attribute to prevalence of favourable weather condition specially the light intensity (Garcés-Varon and Restrepo-Díaz, 2015), resulting in bet-ter plant stature that contributing plentiful synthesis and uniform distribution of assimilates (Sharma et al, 2018). In case of straw yield also, similar trend as that of grain yield was observed.…”

Section: Influence On Grain and Straw Yieldmentioning

confidence: 67%

Production maximization of rainy season rice (Oryza sativa) through effective use of water and solar radiation under modified system of rice intensification in Assam

R. KALITA,

R.K. THAKURIA,

B.K. MEDHI

et al. 2023

IJA

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A field experiment was conducted in a farmers’ field at Nepalikhuti, Golaghat, Assam during the rainy (kharif) season of 2016 and 2017, to find out the effect of different transplanting dates and hill densities of rice (Oryza sativa L.) under system of rice intensification (SRI) which was compared with conventional rice cultivation (CRC). The experiment was designed in factorial split-plot with 2 crop-establishment methods (SRI and CRC) and 3 transplanting dates (26 June, 10 and 25 July) in the main plot; and 4 different hill densities (20 cm × 10 cm, 20 cm × 20 cm, 25 cm × 20 cm and 25 cm × 25 cm) in the subplots and replicated thrice. With an increased grain yield of 5.71 t/ha, SRI-establishment showed a significant yield advantage of 0.83 t/ha coupled with 2.64% more consumptively used water and 1.29 kg/ha-mm more water-use efficiency over CRC. Results showed strong positive correlation (0.95**) between water-use efficiency (WUE) and yield attributes primarily the effective tillers/m2. Regression analysis revealed that irrespective of establishment methods, the consumptive use (CU) of water, accumulated incident photosynthetically active radiation (AIPAR), radiation-use efficiency (RUE) and heat-use efficiency (HUE) greatly influenced the grain yield. However, in SRI, WUE appeared to be an additional key determinant of grain yield. Between 2 establishment methods, SRI was found to be more competent in utilizing water and solar radiation owing to its ideal canopy environment.

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Growth, Yield and Yield Contributing Factors of Rice Crop as Influenced by Different Level and Methods of Irrigation in Tarai Region of Uttarakhand

Cited by 2 publications

References 0 publications

Interaction of the coupled effects of irrigation mode and nitrogen fertilizer timing on rice yield in different regions

Interaction of the coupled effects of irrigation mode and nitrogen fertilizer timing on rice yield in different regions

Production maximization of rainy season rice (Oryza sativa) through effective use of water and solar radiation under modified system of rice intensification in Assam

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