scholarly journals Frequent alternate wetting and drying irrigation mitigates the effect of low phosphorus on rice grain yield in a 4‐year field trial by increasing soil phosphorus release and rice root growth

2020 ◽  
Vol 9 (3) ◽  
Author(s):  
Feiyun Xu ◽  
Tao Song ◽  
Ke Wang ◽  
Weifeng Xu ◽  
Guanglei Chen ◽  
...  
Keyword(s):  
Root Growth ◽  
Grain Yield ◽  
Field Trial ◽  
Soil Phosphorus ◽  
Phosphorus Release ◽  
Rice Root ◽  
Rice Grain ◽  
Wetting And Drying ◽  
Alternate Wetting And Drying ◽  
Low Phosphorus

scholarly journals Root Traits Enhancing Rice Grain Yield under Alternate Wetting and Drying Condition

2017 ◽  
Vol 8 ◽  
Author(s):  
Nitika Sandhu ◽  
Sushil R. Subedi ◽  
Ram B. Yadaw ◽  
Bedanand Chaudhary ◽  
Hari Prasai ◽  
...  
Keyword(s):  
Grain Yield ◽  
Root Traits ◽  
Rice Grain ◽  
Wetting And Drying ◽  
Alternate Wetting And Drying ◽  
Drying Condition

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.

scholarly journals Refinement of Alternate Wetting and Drying Irrigation Method for Rice Cultivation

2014 ◽  
Vol 17 (1-2) ◽  
pp. 33-37 ◽  
Author(s):  
Priya Lal Chandra Paul ◽  
MA Rashid ◽  
Mousumi Paul
Keyword(s):  
Grain Yield ◽  
Water Level ◽  
Block Design ◽  
Water Productivity ◽  
Ground Surface ◽  
Soil Surface ◽  
Ground Level ◽  
Wetting And Drying ◽  
Alternate Wetting And Drying ◽  
Below Ground

Experiments were conducted at BRRI farm Gazipur during Boro season 2010-12 to determine maximum depth of water level below ground surface in alternate wetting and drying (AWD) method. The experiment was laid out in a randomized complete block design with four irrigation treatments. The treatments of AWD method were: T1 = continuous standing water, T2 = irrigation when water level reached 15 cm below ground level, T3 = irrigation when water level reached 20 cm below ground level and T4 = irrigation when water level reached 50 cm below ground level. The experiment involved BRRI dhan28 as a test crop. The treatment T2 gave the highest grain yield (5.9 and 6.2 ton/ha) in 2010-11 and 2011-12, respectively. Maximum benefits per hectare were found Tk. 5476 and 4931 for using 807 and 880 mm water during 2010-11 and 2011-12 respectively and thus water productivity was 7.1 kg/ha-mm in T2 for both the seasons. Continuous standing (T1) water (1013 and 1100 mm) gave comparable grain yield 5.7 and 6.0 ton/ha in 2010-11 and 2011-12, respectively. Minimum water productivity was found in treatment T1 (5.6 and 5.4 kg/ha-mm) for both the seasons. Application of irrigation when water was 15 cm below soil surface was found most profitable in AWD system and the grain yield was decreased when water level was below 15 cm depth. Therefore, the recommended AWD technology could increase rice yield and save irrigation water by 25-30 percent.DOI: http://dx.doi.org/10.3329/brj.v17i1-2.20899Bangladesh Rice j. 2013, 17(1&2): 33-37

scholarly journals Alternate wetting and drying irrigation for rice cultivation

1970 ◽  
Vol 6 (2) ◽  
pp. 409-414 ◽  
Author(s):  
MMH Oliver ◽  
MSU Talukder ◽  
M Ahmed
Keyword(s):  
Grain Yield ◽  
Water Use Efficiency ◽  
Water Use ◽  
Ground Level ◽  
Wetting And Drying ◽  
Alternate Wetting And Drying ◽  
Use Efficiency ◽  
Large Water ◽  
Level Of Significance ◽  
Boro Rice

A field experiment was conducted at the Bangladesh Agricultural University (BAU) to find out possible effects of alternate wetting and drying irrigation (AWDI) on the yield, water use and water use efficiency (WUE) of Boro rice. The experimental layout was furnitured using split-plot design (SPD) with two modern varieties (MV) of rice viz. BRRIdhan 28 and BRRIdhan 29, which received four irrigation treatments randomly and was replicated thrice. The treatments ranged from continuous submergence (T1) of the field to a number of delayed irrigations (T2, T3 and T4) denoting application of 5 cm irrigation water when water level in the perforated PVC pipe fell 10, 20 and 30 cm below ground level (G.L.), respectively. The study revealed that treatment T1 attributed by the highest total water use (122.2 cm) and the lowest WUE (58.53 kg/ha/cm) produced the highest grain yield (6.86 t/ha). Treatment T2, on the contrary, gave the second highest yield (6.58 t/ha) and consequently the second highest WUE (69.48 kg/ha/cm) indicating quite a large water saving (15 cm) compared to treatment T1. The yields in treatments T3 (6.27 t/ha) and T4 (5.86 t/ha) were significantly lower at 1% level of significance compared to that of treatment T1. No significant effect was found either for the treatment or for the varieties on the number of effective and total tillers hill-1 nor did they affect 1000 grain weight. Reduced plant height, no. of effective tillers hill-1, grain yield, straw yield, biological yield and harvest index were found with the increasing water stress. Key words: Alternate wetting and drying irrigation; Boro rice; Yield; Water use efficiency DOI: 10.3329/jbau.v6i2.4841 J. Bangladesh Agril. Univ. 6(2): 409-414, 2008

scholarly journals Water-Saving Irrigation and Nitrogen Fertilizer Use Efficiency for Irrigated Rice in the Red River Delta, Vietnam

2021 ◽  
Vol 4 (3) ◽  
pp. 1117-1130
Author(s):  
Ngo Thanh Son ◽  
Nguyen Thu Ha
Keyword(s):  
Grain Yield ◽  
Water Depth ◽  
Nitrogen Uptake ◽  
Water Productivity ◽  
Water Saving ◽  
Wetting And Drying ◽  
Deep Placement ◽  
Alternate Wetting And Drying ◽  
Placement Method ◽  
Use Efficiency

The objective of this research was to quantify the effects of water-saving regimes and fertilizer application improvement on water productivity, N-use efficiency, and rice yield. The results showed that the tested water treatments did not have significant effects on the growth and development, yield components, and final grain yield, but water productivity was significantly increased from 1.28 kg grain m-3 (W0) water to 1.74 kg grain m-3 water (W1) and 1.94 kg grain m-3 water (W2). In addition, the percentage of total irrigation water saved from W1 and W2 were 25.24-44.52% compared to continuous flooding. Fertilizer deep placement (FDP) combined with organic compost significantly increased the grain yield of the tested hybrid rice variety. Average grain yield increased quickly from 2847 kg ha-1 with 0 kg N ha-1 to 5263 kg ha-1 with 120 kg N ha-1 under the fertilizer deep placement method. The highest total nitrogen uptake, agronomic nitrogen efficiency (ANE), and nitrogen uptake efficiency (NUE) were obtained from alternate wetting and drying at a -20cm water depth and the fertilizer deep placement method (W1N2). In addition, it also gave the highest income in comparison with the other treatments. Therefore, alternate wetting and drying at a -20cm water depth and fertilizer deep placement method should be encouraged for implementation in other regions of Vietnam.

Sign in / Sign up

Export Citation Format

Share Document