scholarly journals Impact of Organic Amendment with Alternate Wetting and Drying Irrigation on Rice Yield, Water Use Efficiency and Physicochemical Properties of Soil

Agronomy ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1529
Author(s):  
Ahmad Numery Ashfaqul Haque ◽  
Md. Kamal Uddin ◽  
Muhammad Firdaus Sulaiman ◽  
Adibah Mohd Amin ◽  
Mahmud Hossain ◽  
...  
Keyword(s):  
Physicochemical Properties ◽  
Water Use Efficiency ◽  
Water Use ◽  
Organic Amendment ◽  
Rice Yield ◽  
Organic Amendments ◽  
Irrigation Regime ◽  
Wetting And Drying ◽  
Use Efficiency ◽  
Properties Of Soil

A pot experiment was executed to investigate the impact of biochar and compost with water-saving irrigation on the rice yield, water use efficiency, and physicochemical properties of soil. Two irrigation regimes—namely alternate wetting and drying (AWD) and continuous flooding (CF)—and four types of organic amendments (OA)—namely rice husk biochar (RHB), oil palm empty fruit bunch biochar (EFBB), compost and a control—were applied to evaluate their effects. Under the AWD irrigation regime, the maximum grain was produced by RHB (241.12 g), whereas under the same organic amendments, both AWD and CF produced a similar grain yield. Under the same organic amendment, a significantly higher water use efficiency (WUE) was observed from the AWD irrigation with RHB (6.30 g L−1) and EFBB (5.80 g L−1). Within the same irrigation regime, soil pH, cation exchange capacity, total carbon, total nitrogen and available phosphorus were enhanced due to the incorporation of biochar and compost, while higher soil exchangeable potassium was observed under CF irrigation for all treatments. RHB and EFBB significantly reduced the soil bulk density (up to 20.70%) and increased porosity (up to 16.70%) under both irrigation regimes. The results imply that the use of biochar with AWD irrigation could enhance the nutrient uptake and physicochemical properties of soil and allow rice to produce a greater yield with less water consumption.

scholarly journals Effect of Moisture Regimes on Water use Efficiency of Rabi / Summer Groundnut Genotypes in Northern Transition Zone of Karnataka

2021 ◽  
Author(s):  
R. Naveen Kumar ◽  
R.H. Patil ◽  
B.S. Yenagi ◽  
S. Sagar Dhage
Keyword(s):  
Water Use Efficiency ◽  
Transition Zone ◽  
Water Use ◽  
Irrigation Water ◽  
Water Regime ◽  
Moisture Stress ◽  
Irrigation Regime ◽  
Water Regimes ◽  
Pod Yield ◽  
Use Efficiency

Background: During rabi / summer irrigation water is a scarce resource, but crop needs more water due to non-rainy season and warmer climate. Hence, a field experiment was conducted during rabi / summer season of 2016-17 to study the effect of irrigation water regimes on water use efficiency (WUE) of groundnut genotypes in Northern Transition Zone of Karnataka. Methods: This field study comprised of four main plots as water regimes viz. I1: (control) seven irrigations at 15 days interval from sowing to 105 DAS, I2: Stress at pegging stage; withdrawal of one irrigation between 45 - 60 DAS, I3: Stress at pegging and pod filling stage; withdrawal of two irrigations between 45-75 DAS, I4: Stress at pegging, pod filling and kernel development stage; withdrawal of four irrigations from 45-105 DAS and four genotypes as sub plots viz. G1: Dh-86, G2: Dh-101, G3: K-9 and G4: G2-52. Treatments were replicated thrice and laid out in split plot design. Result: Among the water regime, I2 recorded significantly higher WUE (6.2 kg ha-1 mm-1) followed by I1 (control; 5.5 kg ha-1 mm-1). Water regime I2 also recorded significantly higher pod yield and haulm yield (2,857 kg ha-1 4,648 kg ha-1, respectively) along with other yield attributes, but was found at par with control (I1). This study showed that WUE as well as yield of rabi / summer groundnut can be enhanced if crop was exposed only to mild stress by skipping an irrigation at pegging stage out of total seven irrigations. Among the genotypes, Dh-86 with 2,375 kg ha-1 of pod yield performed significantly better over others like Dh-101 (2,215 kg ha-1), K-9 (2,048 kg ha-1) and G2-52 (1,880kg ha-1) suggesting differential response to moisture stress, thus choice of moisture stress tolerant genotypes is equally important to enhance WUE. Interaction between irrigation regime and genotypes showed that Dh-86 (G1) with I2 irrigation regime recorded significantly higher WUE (6.9 kg ha-1 mm-1), pod yield (3,168 kg ha-1) and net return (Rs. 95,655 ha-1) and was found at par with full irrigation regime (I1). 

Effects of Alternate Wetting and Drying Irrigation on Yield and Water Use Efficiency of Rice

2016 ◽  
Vol 42 (7) ◽  
pp. 1026 ◽  
Author(s):  
Guang CHU ◽  
Ming-Fei ZHAN ◽  
Kuan-Yu ZHU ◽  
Zhi-Qin WANG ◽  
Jian-Chang YANG
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Wetting And Drying ◽  
Alternate Wetting And Drying ◽  
Use Efficiency

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 use efficiency in four irrigation regimes in bulb onion production in the Alto Chicamocha Irrigation District

2020 ◽  
Vol 14 (3) ◽  
pp. 393-401
Author(s):  
Germán Eduardo Cely-Reyes ◽  
Karen Victoria Suárez-Parra ◽  
Rosalina González-Forero
Keyword(s):  
Soil Moisture ◽  
Water Use Efficiency ◽  
Water Use ◽  
Irrigation Water ◽  
Irrigation District ◽  
Irrigation Regime ◽  
Irrigation Regimes ◽  
Bulb Onion ◽  
Irrigation Water Use ◽  
Use Efficiency

The bulb onion is one of the most important agricultural products in Colombia. The productive conditions of the Riego del Alto Chicamocha (Boyaca) district are a regional and national benchmark for this market. The objective of this research was to evaluate four irrigation regimes in terms of production and irrigation water efficiency in bulb onion crops. This trial was in the municipality of Nobsa, village of Dicho (Boyaca). A completely randomized design with four treatments was used: irrigation regime with 150% evapotranspiration (Evt); moisture-based irrigation regime, detected with soil moisture sensors; irrigation regime with 100% Evt; irrigation regime with 60% Evt, along with four repetitions. Starting three weeks after transplant and for 11 weeks (77 days), the polar diameter (cm), equatorial diameter (cm), root length (cm), leaf length (cm), SPAD units, stomatal conductance and irrigation water use efficiency were determined. The irrigation regime with 100% Evt had the best performance in terms of the polar and equatorial diameters and the root and leaf lengths, which were reflected in the fresh weight at harvest. The irrigation regime with soil moisture values obtained from remote sensors, with lower amounts of applied water, had better values for the transformation of water to fresh mass, with 13.64 kg mm-1.

scholarly journals Irrigation Rationalization Boosts Wheat (Triticum aestivum L.) Yield and Reduces Rust Incidence under Arid Conditions

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Adnan Alghawry ◽  
Attila Yazar ◽  
Mustafa Unlu ◽  
Yeşim Bozkurt Çolak ◽  
Muhammad Aamir Iqbal ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Water Use Efficiency ◽  
Water Use ◽  
Stripe Rust ◽  
Deficit Irrigation ◽  
Yellow Rust ◽  
Triticum Aestivum L ◽  
Irrigation Regime ◽  
Crop Water ◽  
Use Efficiency

Under changing climate, water scarcity and frequent incidence of diseases like stripe rust pose the biggest threat to sustainable crop production which jeopardizes nutritional security. A study was executed to rationalize crop water requirement and evaluate wheat (Triticum aestivum L. cv. Bohoth 3) yield losses by stripe rust infection under irrigated conditions. Seven water treatments included three irrigations in three stages/season ( S 3 ), four irrigations ( S 4 ), and five irrigations ( S 5 ) at the different sensitive growth stages, full ( F ), and two deficit irrigation levels including D 1 = 80 % of field capacity (FC) and D 2 = 70 % (FC) along with farmers’ practice of irrigation as control ( C ). Results revealed that F and D 1 boosted grain yield by 31 and 14%. Overall, F irrigation regime resulted in the highest grain production (2.93 ton/ha) as well as biomass yield (13.2 ton/ha). However, D 2 had the highest value of grain protein (15.9%) and achieved the highest application efficiency (AE) at midseason (54.6%) and end season (59.6%), and the lowest AE was under S 3 . Also, halting irrigation at the milky stage ( S 5 ) led to a significant decrease in irrigation water use efficiency as compared to D 1 . However, cutting irrigation at the end of seedling, heading, and milky stages ( S 3 ) caused a significant reduction in E a , crop water use (ETa), and 1000 grain weight in comparison with all other treatments. Regarding yellow rust, S 3 irrigation regime resulted in the lowest incidence of yellow rust infection. The highest irrigation and water use efficiency values were recorded under D 1 (0.79 and 0.59 kg/m3), and the lowest values were obtained for control. Hence, the deficit irrigation treatment D 1 could be recommended as the best appropriate strategy to save more water and to improve the water productivity under Yemeni agroclimatic conditions.

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