scholarly journals Effect of rice varieties on physiological parameters under flood irrigation and alternate wetting and drying (AWD) irrigation practices

2020 ◽  
Vol 9 (3) ◽  
pp. 2197-2201
Author(s):  
P Kunjammal ◽  
Subbalakshmi Lokanadhan ◽  
S Murali Krishnasamy ◽  
D Jawahar ◽  
K Ganesamurthy
Keyword(s):  
Physiological Parameters ◽  
Flood Irrigation ◽  
Rice Varieties ◽  
Wetting And Drying ◽  
Alternate Wetting And Drying ◽  
Irrigation Practices

scholarly journals Effect of Irrigation Practices on Water Use Its Efficiency and Economic Yield in Rice Varieties

2020 ◽  
pp. 67-71
Author(s):  
P. Kunjammal ◽  
Subbalakshmi Lokanadhan ◽  
S. Murali Krishnasamy ◽  
D. Jawahar ◽  
K. Ganesamurthy
Keyword(s):  
Water Use ◽  
Water Productivity ◽  
Rice Variety ◽  
Flood Irrigation ◽  
Rice Varieties ◽  
Wetting And Drying ◽  
Agricultural College ◽  
Irrigation Practice ◽  
Use Efficiency ◽  
Irrigation Practices

A field experiment was carried out at the Agricultural College & Research Institute, Coimbatore in research farm during samba season 2018-2019 to assess the water use  and its efficiency in different rice varieties comprising aromatic rice, land races, popular cultivars and recent released variety under modified irrigation practices. The experimental design was a split plot with three replications. The main plots with contionous flooding and modified irrigation practices and  sub plots with eight varieties as treatments viz., (S1) Kalanamak, (S2) Jeeragasamba, (S3) Kavuni, (S4) Mappilaisamba, (S5)Improved TNAU White ponni, (S6) Bhavani, (S7) CO 51 and (S8) CO 52. Irrigation practice of alternate wetting and drying, monitoring with field tube registered lower consumption of water (900 mm) with less number of irrigation(14), higher water use efficiency (7.3 kg ha-1mm-1) and water productivity (1682 lit.kg-1) in rice, compared to flood irrigation practices. In Sub plot with different rice varieties viz., aromatic, landraces, popular cultivar and recently released rice variety among these varieties the recent released variety CO52 recorded higher grain yield (6.6 t ha-1), compared to other varieties.

scholarly journals Genome-wide transcriptome analysis of roots in two rice varieties in response to alternate wetting and drying irrigation

2020 ◽  
Vol 8 (4) ◽  
pp. 586-601 ◽  
Author(s):  
Tao Song ◽  
Debatosh Das ◽  
Feng Yang ◽  
Moxian Chen ◽  
Yuan Tian ◽  
...  
Keyword(s):  
Transcriptome Analysis ◽  
Rice Varieties ◽  
Wetting And Drying ◽  
Alternate Wetting And Drying ◽  
Genome Wide

scholarly journals Impacts of tillage operations and microirrigation practices on weed infestation of BRRI Dhan 28

2015 ◽  
Vol 24 (2) ◽  
pp. 131-136
Author(s):  
S Khatun ◽  
SU Ahmed ◽  
SMA Faiz ◽  
AHM Mustafizur Rahmana
Keyword(s):  
Rice Field ◽  
Main Type ◽  
Sprinkler Irrigation ◽  
Conventional Tillage ◽  
Herbicide Application ◽  
Flood Irrigation ◽  
Wetting And Drying ◽  
Alternate Wetting And Drying ◽  
Weed Infestation ◽  
Tillage Methods

An experiment was conducted with BRRI dhan 28 following four irrigation treatments (flood, drip, alternate wetting and drying, sprinkler) and two tillage methods (conventional or puddled and unpuddled). Highest number of weed infestation over conventional tillage was observed when herbicide was not applied. Weed biomass was recorded maximum in sprinkler irrigation followed by alternate wetting and drying (AWD) and flood irrigation. The main type of weed in the rice field was sedges. Weed infestation at 20 and 40 days after herbicide application was found to be the highest due to sprinkler irrigation over AWD and flood irrigations. Unpuddled tillage showed lower weed number and biomass over the conventional puddle tillage. Dhaka Univ. J. Biol. Sci. 24(2): 131-136, 2015 (July)

The potential for expansion of irrigated rice under alternate wetting and drying in Burkina Faso

2021 ◽  
Vol 247 ◽  
pp. 106758
Author(s):  
Komlavi Akpoti ◽  
Elliott R. Dossou-Yovo ◽  
Sander J. Zwart ◽  
Paul Kiepe
Keyword(s):  
Burkina Faso ◽  
Wetting And Drying ◽  
Irrigated Rice ◽  
Alternate Wetting And Drying

Diagnosis and management of green algae in low land paddy fields of Cauvery delta zone, Tamil Nadu

2021 ◽  
Vol 58 (1) ◽  
pp. 33-42
Author(s):  
M Jeya Bharathi ◽  
M Raju ◽  
S Elamathi
Keyword(s):  
Green Algae ◽  
Tamil Nadu ◽  
Rice Cultivation ◽  
Rice Root ◽  
Wetting And Drying ◽  
Alternate Wetting And Drying ◽  
Green Algal ◽  
Algae Growth ◽  
Cauvery Delta ◽  
Soil And Water

Rice is a prime food crop for Asian countries. Wet land rice cultivation contributes maximum grain yield than dry land rice. Cauvery delta is a predominant area for rice cultivation in Tamil Nadu. Green algae growth during Kuruvai (June -August) season is a serious problem in wet land rice. These algae growth create anaerobic condition and prevent rice root respiration. The entire rice root was uprooted and floated on the stagnated water during initial stage. There is no preliminary study for green algae control in rice field. Soil and water samples were collected and analyzed for the nature of occurrence. Laboratory and field experiments were conducted to find out the remedial measures. The results of soil and water sample analysis showed that use of bore well water and dumping of phosphatic fertilizers leads to salt accumulation which favours the green algal growth. The results of the laboratory experiment revealed that the CuSO4 londox power, propiconazole and hexaconazole showed moderate inhibition on 5th day after treatment. The findings from field experiment indicated that use of conoweeder, alternate wetting and drying and CuSo4 drenching @ of 2.5 kg/ha when green algae appearance has just noticed or 5.0 kg/ha when severe growth occurred was effective in managing the green algae. Among all measures, alternate wetting and drying is the best management practices. CuSO4 drenching reduces around 70% of the growth. Even though CuSO4 react negatively with algae growth, soil pH changes and salt concentration play a major role on the CuSO4 action towards green algae. In order to maintain soil health condition, biofertilizer application, crop rotation, green manure trampling to be practised to recover the soil from alkaline pH, removal of accumulated salt and to control the algae growth using CuSO4.

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