Influence of Boron on Spikelet Fertility Under Varied Soil Conditions in Rice Genotypes

Rao, P. Raghuveer; Subrhamanyam, D.; Sailaja, B.; Singh, R. P.; Ravichandran, V.; Rao, G. V.; Swain, P.K.; Sharma, SG; Saha, Saswata; Nadaradjan, S.; Reddy, P. Jayachandra; Shukla, A. K.; Dey, P. C.; Patel, D. P.; Ravichandran, S.; Voleti, S. R.

doi:10.1080/01904167.2012.744420

Cited by 13 publications

(7 citation statements)

References 12 publications

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“…Clay soil had 19% greater total spikelet number than sandy loam soil ( Table 3 ). Similar effects of soil on the number of spikelet per panicle have been reported by Rao et al [ 30 ]. Using four different soils, Rao et al [ 30 ] reported that the spikelet per panicle ranged from 43 to 198 varying with soil textures.…”

Section: Resultssupporting

confidence: 87%

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Soil Texture and Cultivar Effects on Rice (Oryza sativa, L.) Grain Yield, Yield Components and Water Productivity in Three Water Regimes

Dou¹,

Soriano

Tabien³

et al. 2016

PLoS ONE

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The objective of this study was to determine the effects of water regime/soil condition (continuous flooding, saturated, and aerobic), cultivar (‘Cocodrie’ and ‘Rondo’), and soil texture (clay and sandy loam) on rice grain yield, yield components and water productivity using a greenhouse trial. Rice grain yield was significantly affected by soil texture and the interaction between water regime and cultivar. Significantly higher yield was obtained in continuous flooding than in aerobic and saturated soil conditions but the latter treatments were comparable to each other. For Rondo, its grain yield has decreased with soil water regimes in the order of continuous flooding, saturated and aerobic treatments. The rice grain yield in clay soil was 46% higher than in sandy loam soil averaged across cultivar and water regime. Compared to aerobic condition, saturated and continuous flooding treatments had greater panicle numbers. In addition, panicle number in clay soil was 25% higher than in sandy loam soil. The spikelet number of Cocodrie was 29% greater than that of Rondo, indicating that rice cultivar had greater effect on spikelet number than soil type and water management. Water productivity was significantly affected by the interaction of water regime and cultivar. Compared to sandy loam soil, clay soil was 25% higher in water productivity. Our results indicated that cultivar selection and soil texture are important factors in deciding what water management option to practice.

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Section: Resultssupporting

confidence: 87%

“…Similar effects of soil on the number of spikelet per panicle have been reported by Rao et al [ 30 ]. Using four different soils, Rao et al [ 30 ] reported that the spikelet per panicle ranged from 43 to 198 varying with soil textures. Those authors partially contributed such variation to the difference in soil boron concentration.…”

Section: Resultssupporting

confidence: 87%

Soil Texture and Cultivar Effects on Rice (Oryza sativa, L.) Grain Yield, Yield Components and Water Productivity in Three Water Regimes

Dou¹,

Soriano

Tabien³

et al. 2016

PLoS ONE

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“…therefore, it could retain more water and nutrients needed by the rice plant, consequently raising the number of panicles as well as the filled spikelet per panicle. Similarly, several investigators obtained greater grain yield of rice cultivated in higher clay content soils than those grown in lower clay content soils [42,65] . The result of grain yield in Figure 7, with interaction between irrigation method and soil clay content, showed that highly clayed soil holds more water and nutrients providing typical demands for rice.…”

Section: Yield Indicatorsmentioning

confidence: 93%

Effects of irrigation water regime, soil clay content and their combination on growth, yield, and water use efficiency of rice grown in South China

Hamoud

Guo

Wang

et al. 2018

International Journal of Agricultural and Biological Engineering

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To investigate the effect of irrigation regime, soil clay content and their combination on growth, yield, and water productivity of rice, a shelter experiment was conduct using Randomized Complete Block Design (RCBD) with a factorial arrangement of treatments with four replications. Irrigation regime was the main treatment investigated, set in three levels as R (30 mm-100%) (100% of saturation and 30 mm flooded), R (30 mm-90%) (90% of saturation and 30 mm flooded) and R (30 mm-70%) (70% saturation and 30 mm flooded), respectively. The sub-treatment was soil type, set in three levels as 40%, 50% and 60% clay content, respectively. Results showed that irrigation regime and soil clay content had significant effects on growth, yield and water productivity of rice. However, their combination showed no significant impact on panicles number, root biomass, harvest index and irrigation water productivity. Higher soil clay content results in increase in growth, yield, and water productivity of rice. The total water consumption during R (30 mm-100%) was higher than that during R (30 mm-90%) and R (30 mm-70%) because the latter two saturation levels led to the cracking of soil and decrease of total number of irrigations. Cracks were consistently getting more serious with the reduction in soil water content and the increase in soil clay content. Cracks in soil will preferentially become the major routes of water losses, thus water percolation during R (30 mm-70%) was higher than that during R (30 mm-90%) and R (30 mm-100%) after each irrigation event. The total water use under R (30 mm-70%) exceeded the water consumption under R (30 mm-90%) due to the great amount of soil cracking as well as the excessive volume of standing water depth. Considering water consumption and grain yield, the following conclusion can be reached: (i) The reduction in water consumption was greater than the reduction in grain yield in the case of drying soil 10% below saturation before reflooding. (ii) The reduction in water consumption was less than the reduction in grain yield in the case of drying soil 30% below saturation before reflooding; (iii) The increase in water use was greater than the increase in grain yield in the case of maintaining soil moisture at 100% of saturation before reflooding. Therefore, the water use efficiency was recorded in the order of R (30 mm-90%) >R (30 mm-100%) >R (30 mm-70%).

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“…Increasing the clay content could improve the soil fertility [58]. A high biomass was recorded in rice grown in high clay soil than in rice grown in low clay soil [58][59][60]. In the present study, S (60%) showed a higher value for the dry weight of the leaves, stem, and spikelet, leading to the higher dry weight of the shoots than those in S (50%) and S (40%) ( Figure 5).…”

Section: Potassium Concentration In Plant Partitioningsmentioning

confidence: 44%

Effect of Irrigation Regimes and Soil Texture on the Potassium Utilization Efficiency of Rice

et al. 2019

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Understanding the effects of irrigation regime and soil texture on potassium-use efficiency (KUE) of rice (Oryza sativa. L) is essential for improving rice productivity. In this regard, experiments were conducted from July to October in 2016 and 2017 by using a randomized complete block design in a factorial arrangement with four replications. The rice plants were grown in three soils, with clay contents of 40%, 50%, and 60%, which were marked as S (40%), S (50%), and S (60%), respectively. For each soil type, irrigation regimes, namely, R (F, S100%), R (F, S90%), and R (F, S70%), were established by setting the lower limit of irrigation to 100%, 90%, and 70% of saturated soil water content, respectively, and the upper limit of irrigation with 30 mm of flooding water above the soil surface for all irrigation regimes. Results showed that the responses of the roots and shoots and the potassium accumulation (KA) and KUE of rice were significantly affected by the water regime and soil texture. In the same irrigation regime, increasing the soil clay content improved the K utilization of rice. Under the same soil type, R (F, S100%) was the optimal water management practice for growing rice. The R (F, S100%) S (60%) treatment presented the highest KUE, which was 56.4% in 2016 and 68.1% in 2017. The R (F, S70%) S (40%) treatment showed the lowest KUE, which was 13.8% in 2016 and 14.9% in 2017. These results enrich knowledge regarding the relationship among soil, water, and rice, and provide valuable insights on the effect of irrigation regime and soil texture on the KA and KUE of rice.

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Influence of Boron on Spikelet Fertility Under Varied Soil Conditions in Rice Genotypes

Cited by 13 publications

References 12 publications

Soil Texture and Cultivar Effects on Rice (Oryza sativa, L.) Grain Yield, Yield Components and Water Productivity in Three Water Regimes

Soil Texture and Cultivar Effects on Rice (Oryza sativa, L.) Grain Yield, Yield Components and Water Productivity in Three Water Regimes

Effects of irrigation water regime, soil clay content and their combination on growth, yield, and water use efficiency of rice grown in South China

Effect of Irrigation Regimes and Soil Texture on the Potassium Utilization Efficiency of Rice

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