Evaluation of Drip Irrigation System for Water Productivity and Yield of Rice

Parthasarathi, T.; Vanitha, K.; Mohandass, S.; Vered, Eli

doi:10.2134/agronj2018.01.0002

Cited by 73 publications

(58 citation statements)

References 38 publications

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“…In another study, Bansal et al [95] also reported similar results in their experiments with on-farm drip irrigation in rice at Haryana, India. Parthasarathi et al [96] also reported increased aerobic rice yield and water savings by 29 and 50%, respectively at Coimbatore, India using drip irrigation. Water productivity of aerobic rice under the drip irrigation system of rice was increased by 200%.…”

Section: Drip Irrigation Under Different Rice Establishment Practicesmentioning

confidence: 98%

Rice (Oryza sativa L.) Establishment Techniques and Their Implications for Soil Properties, Global Warming Potential Mitigation and Crop Yields

et al. 2020

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Rice-based intensive cropping systems require high input levels making them less profitable and vulnerable to the reduced availability of labor and water in Asia. With continuous conventional puddled rice transplanting, the situation is exacerbated by damaged soil structure, declining underground water and decreasing land and water productivity. To minimize these negative effects a range of new crop establishment practices have been developed (zero tillage, dry direct seeding, wet direct seeding, water seeding, strip planting, bed planting, non-puddled transplanting of rice, mechanical transplanting of rice crop and combinations thereof) with varying effects on soil health, crop productivity, resource saving and global warming mitigation potential. Some of these allow Conservation Agriculture (CA) to be practiced in the rice-based mono-, double- and triple cropping systems. Innovations in machinery especially for smallholder farms have supported the adoption of the new establishment techniques. Non-puddling establishment of rice together with increased crop residue retention increased soil organic carbon by 79% and total N (TN) in soil by 62% relative to conventional puddling practice. Rice establishment methods (direct seeding of rice, system of rice intensification and non-puddled transplanting of rice) improve soil health by improving the physical (reduced bulk density, increased porosity, available water content), chemical (increased phosphorus, potassium and sulphur in their available forms) and biological properties (microbiome structure, microbial biomass C and N) of the soil. Even in the first year of its practice, the non-puddled transplanting method of rice establishment and CA practices for other crops increase the productivity of the rice-based cropping systems. Estimates suggest global warming potential (GWP) (the overall net effect) can be reduced by a quarter by replacing conventional puddling of rice by direct-seeded rice in the Indo-Gangetic Plains for the rice-based cropping system. Moreover, non-puddled transplanting of rice saves 35% of the net life cycle greenhouse gases (GHGs) compared with the conventional practice by a combination of decreasing greenhouse gases emissions from soil and increasing soil organic carbon (SOC). Though the system of rice intensification decreases net GHG emission, the practice releases 1.5 times greater N2O due to the increased soil aeration. There is no single rice establishment technology that is superior to others in all circumstances, rather a range of effective technologies that can be applied to different agro-climates, demography and farm typologies.

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Section: Drip Irrigation Under Different Rice Establishment Practicesmentioning

confidence: 98%

Rice (Oryza sativa L.) Establishment Techniques and Their Implications for Soil Properties, Global Warming Potential Mitigation and Crop Yields

et al. 2020

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“…Rice ( Oryza sativa L.) is one of the most cultivated cereals and an important source of carbohydrates to two‐thirds of the global population (Parthasarathi et al ., 2018). Approximately, 75% of the produced rice is cultivated under irrigated conditions and predominantly in a flood irrigation system (Abdallah et al ., 2018).…”

Section: Introductionmentioning

confidence: 99%

Brassinosteroids trigger tolerance to iron toxicity in rice

Tadaiesky

Silva

Batista

et al. 2020

Physiologia Plantarum

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Iron (Fe) toxicity is one of the most frequent abiotic stresses in rice, as it affects from 15% to 30% of the total production. Brassinosteroids (BRs), including 24‐epibrassinolide (EBR), regulate ion homeostasis and improve the antioxidant system. The aim of this research was to determine whether EBR can contribute to the tolerance of rice plants exposed to Fe toxicity and to evaluate the possible effect on anatomical characteristics, nutrient concentrations, the antioxidant system, and gas exchange. The experiment was randomized with four treatments, two with different concentrations of Fe (250 and 6250 μM, control and toxicity, respectively) and these were either supplied with EBR or not (0 and 10 nM EBR, described as −EBR and +EBR, respectively). Treating plants grown under Fe toxic conditions with EBR caused an 70% increase in root aerenchyma area, compared to plants without steroid treatment. Our results revealed that EBR treatment could mitigate the deleterious effects of Fe toxicity in rice plants, by modulating the aerenchyma area, which contributes to the formation of an oxidative barrier and reduce the Fe mobilization at the root surface. Plants that were exposed to Fe toxic concentrations and treated with EBR showed (1) an increase in the enzyme activities of superoxide dismutase, catalase, ascorbate peroxidase and peroxidase, (2) mitigation of oxidative damage and (3) increased scavenging of reactive oxygen species. Finally, EBR alleviated the negative impacts induced by excess Fe on the net photosynthetic rate and the instantaneous carboxylation efficiency. These benefits were directly related to higher electron transport and stomatal density and indirectly linked to the protection mechanism exercised by the antioxidant enzymes on photosynthetic machinery. We conclude that EBR is able to confer tolerance to Fe toxicity in rice plants.

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“…Lowland rice requires around 1000 to 5000 liters of water for producing one kg grain which is about twice or even more than wheat or maize water requirement [2]. However, the increasing scarcity of freshwater for agriculture and the equal demand from the nonagricultural sector threaten the sustainability of the irrigated rice ecosystem [3,4,5,6]. One of the recent developments is to grow rice as an upland crop viz.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Drip Fertigation System for Aerobic Rice in Western Zone of Tamil Nadu

Duraisamy

Thiyagarajan

Muthu

2020

IJPSS

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The productivity of rice is in decreasing trend due to non-availability of irrigation water. Hence, rice cultivation with minimum water which paves way for the research on aerobic rice (i.e., growing in the non-flooded and non-puddled situation). Field experiments were conducted at Agricultural Research Station, Bhavanisagar during 2013-14 and 2014-15 to evaluate the drip fertigation system and to work out the economics in aerobic rice at different irrigation and nitrogen levels. The treatments included four irrigation levels (irrigation at 100%, 125%, 150% PE daily and conventional irrigation at IW/CPE = 1.25) with a combination of three fertigation levels (100,150 and 200 kg N ha-1) of nitrogen. The experiment was laid in split plot design replicated thrice. The test variety is PMK 3, with a duration of 130-135 days. Entire quantity of phosphorus and 50 per cent of potassium was applied basally. Different doses of nitrogen and remaining 50 per cent of potassium was applied as fertigation in weekly intervals from 21 days after sowing. Irrigation was given daily basis with daily Pan Evaporation rate. Concerning different irrigation levels, 150 per cent PE on daily basis recorded significantly higher grain yield (5069 kg ha-1), WUE (7.37 kg/ha mm) and net income of Rs. 33607 ha-1 and B:C ratio of 1.88. For nitrogen levels, 150 kg N per ha recorded significantly higher grain yield (4146 kg ha-1), WUE (6.69 kg/ha mm) and net income of Rs. 20464 ha-1 and B:C ratio of 1.53. For aerobic rice, the irrigation at 150 per cent PE on daily basis combined with 150 kg N per ha recorded significantly higher grain (5483 kg ha-1), WUE (8.18 kg/ha mm) and higher net income of Rs. 39448 ha-1 and B:C ratio of 2.03.

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Evaluation of Drip Irrigation System for Water Productivity and Yield of Rice

Cited by 73 publications

References 38 publications

Rice (Oryza sativa L.) Establishment Techniques and Their Implications for Soil Properties, Global Warming Potential Mitigation and Crop Yields

Rice (Oryza sativa L.) Establishment Techniques and Their Implications for Soil Properties, Global Warming Potential Mitigation and Crop Yields

Brassinosteroids trigger tolerance to iron toxicity in rice

Evaluation of Drip Fertigation System for Aerobic Rice in Western Zone of Tamil Nadu

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