Growth and yield of rice under sprinkler irrigation on a free-draining soil

1985 ◽  
Vol 25 (3) ◽  
pp. 636 ◽  
Author(s):  
J Blackwell ◽  
WS Meyer ◽  
RCG Smith
Keyword(s):  
Irrigation System ◽  
New South ◽  
Sprinkler Irrigation ◽  
Sprinkler System ◽  
Growth And Yield ◽  
Pan Evaporation ◽  
Water Application ◽  
Class A ◽  
South Wales ◽  
Class A Pan

A line-source sprinkler irrigation system was used to study rice growth under irrigation on a free-draining soil in the Murrumbidgee Irrigation Area of New South Wales. Ponded rice was grown on the same soil for comparison. Seven levels of sprinkler water application were examined, ranging from 26 to128% of Class 'A' pan evaporation. Apparent efficiency of water use ranged from 3.4 kg of grain/mm for the highest yielding sprinkler treatment to 1.85 kg of grain/mm for the highest yielding ponded treatment. Excellent weed control was achieved by herbicides applied through a sprinkler system.

Effect of sprinkler irrigation levels on the performance of blackgram (Vigna mungo) varieties

2017 ◽  
Author(s):  
G. Senthil Kumar ◽  
T. Ramesh ◽  
K. Subrahmaniyan ◽  
V. Ravi
Keyword(s):  
Irrigation Water ◽  
Tamil Nadu ◽  
Sprinkler Irrigation ◽  
Sprinkler System ◽  
Growth And Yield ◽  
Pan Evaporation ◽  
Surface Irrigation ◽  
Yield Attributes ◽  
Irrigation Method ◽  
Four Levels

A field experiment was conducted at Tamil Nadu Rice Research Institute, Aduthurai, Tamil Nadu during Summer, 2013 and 2014 to study the response of blackgram varieties to different levels of irrigation through applied sprinkler system. Four levels of irrigation I1 - 50 per cent pan evaporation through sprinkler irrigation, I2 - 75 per cent pan evaporation through sprinkler irrigation, I3 - 100 per cent pan evaporation through sprinkler irrigation and I4 - Surface irrigation in main plot and three blackgram varieties viz., ADT 5, PBG 4 and VBN BG 6 were evaluated in split plot design with three replications. Sprinkler irrigation at 100% pan evaporation in variety ADT 5 gave significantly better growth and yield attributes and higher grain yield of 1217 kg/ha which was at par with surface irrigation method in ADT 5 variety (1184 kg/ha). Surface irrigation method utilized higher amount of irrigation water of 428.1 mm and 413.6 mm, whereas, sprinkler irrigation at 100% pan evaporation utilized minimum amount of irrigation water of 329.2 mm and 308.7 mm during summer 2013 and 2014, respectively. Water saving under sprinkler irrigation at 100% pan evaporation was 23.1% and 25.4% as compared to surface irrigation method during summer 2013 and 2014, respectively.

YIELD OF BANANA GROWN WITH SUPPLEMENTAL DRIP-IRRIGATION ON AN ULTISOL

1998 ◽  
Vol 34 (4) ◽  
pp. 439-448 ◽  
Author(s):  
R. GOENAGA ◽  
H. IRIZARRY
Keyword(s):  
Drip Irrigation ◽  
Irrigation System ◽  
Irrigation Treatment ◽  
Water Application ◽  
Marketable Yield ◽  
The Third ◽  
Class A ◽  
Weight Yield ◽  
Four Levels ◽  
Class A Pan

A three-year study was conducted on an Ultisol to determine the water requirement, yield and fruit-quality traits of three ratoon crops (R1, R2, R3) of ‘Grande Naine’ banana (Musa acuminata Colla, AAA group) subjected to four levels of irrigation. The irrigation treatments were based on Class A pan factors ranging from 0.0 (rainfed) to 1.0 in increments of 0.25. When needed, drip irrigation was supplied three times a week on alternate days. Results showed significant (p < 0.01) irrigation treatment and crop effects on bunch weight, yield, bunch mean hand weight, weight and fruit diameter of the third and last hands, and length of fruits of the third hand. Highest marketable yield (47.9 t ha−1) was obtained from the R2 crop with water application according to a pan factor of 1.0. It was concluded that irrigating the crop according to a pan factor of 1.0 was sufficient to justify the investment of a drip-irrigation system for a farm in the mountain region.

The effect of total water supply, and frequency of application, upon lucerne. II.* Chemical composition

1972 ◽  
Vol 23 (2) ◽  
pp. 253 ◽  
Author(s):  
RW Snaydon
Keyword(s):  
Water Supply ◽  
Nitrogen Concentration ◽  
Phosphorus Concentration ◽  
In Vitro Digestibility ◽  
Pan Evaporation ◽  
Water Application ◽  
Total Water ◽  
Class A ◽  
Class A Pan

Total water supply, expressed as a proportion of class A pan evaporation (Epan), and frequency of water application were varied independently during summer. The phosphorus concentration in the shoots of lucerne increased by 35% when the total water supply was increased from 0.1 to 1.0Epan; the nitrogen concentration was not significantly affected. The in vitro digestibility of leaf and stem fractions decreased with increasing total water supply, and the proportion of highly digestible fractions (leaf and flower) also decreased, so that total shoot digestibility decreased from 65% at 0.24 Epan to 55% at 0.58 Epan. Frequency of water application had no significant effect upon phosphorus or nitrogen concentration or in vitro digestibility. ____________________ *Part I, Aust. J. Agric. Res., 23: 239 (1972)

scholarly journals Sunflower cultivation under different irrigation systems and planting spacings in the sub-middle region of São Francisco Valley

2020 ◽  
Vol 41 (6supl2) ◽  
pp. 2899-2910
Author(s):  
Welson Lima Simões ◽  
◽  
Jucicléia Soares da Silva ◽  
Anderson Ramos de Oliveira ◽  
Amadeu Regitano Neto ◽  
...  
Keyword(s):  
Irrigation System ◽  
Block Design ◽  
Sprinkler Irrigation ◽  
Sprinkler System ◽  
Growth And Yield ◽  
Middle Region ◽  
Irrigation Systems ◽  
Head Diameter ◽  
Randomized Block Design ◽  
Number Of Leaves

The growth and yield of sunflower plants can be influenced by the plant population arrangement and the type of irrigation system adopted to meet the water requirements of the crop. This study examines the influence of different irrigation systems and spacings between planting rows on the development of sunflower cultivars for the sub-middle region of São Francisco Valley. The experiment was laid out in a randomized block design with a split-plot arrangement in which the plots consisted of three irrigation systems (drip, micro-sprinkler and sprinkler); sub-plots were represented by three spacings between planting rows (0.65, 0.55 and 0.45 m); and sub-sub-plots corresponded to two sunflower cultivars (Hélio 251 and Hélio 360). The following variables were analyzed: plant height; number of leaves; stem diameter; number of heads; head diameter; dry biomass of stems, leaves and heads; and achene yield. The different irrigation systems and row spacings markedly influenced the growth of the sunflower cultivars. The highest yield of cultivar Hélio 251 was obtained with the drip irrigation system and 0.55 m spacing. Cultivar Hélio 360 achieved the highest yields when irrigated by the micro-sprinkler system at 0.55 and 0.45 m spacing. In the sprinkler irrigation system, cultivar Hélio 360 obtained the highest yield at 0.45 m spacing.

scholarly journals ESTUDO DO CONSUMO E CUSTO DE ENERGIA ELÉTRICA EM CULTURA DE SOJA IRRIGADA

Irriga ◽  
2005 ◽  
Vol 10 (1) ◽  
pp. 64-75
Author(s):  
José Eduardo Pitelli Turco ◽  
Jarbas Dos Santos Júnior ◽  
Edemo João Fernandes
Keyword(s):  
Soil Water ◽  
Irrigation System ◽  
Electric Energy ◽  
Pan Evaporation ◽  
Soil Water Depletion ◽  
Water Depletion ◽  
Soybean Crop ◽  
Class A ◽  
Electricity Costs ◽  
Class A Pan

ESTUDO DO CONSUMO E CUSTO DE ENERGIA ELÉTRICA EM CULTURA DE SOJA IRRIGADA  José Eduardo Pitelli Turco; Jarbas Dos  Santos Junior;  Edemo João FernandesDepartamento de Engenharia Rural, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista, Via de Acesso Prof. Paulo Donato Castellane, s/n, CEP 14884-900,  Jaboticabal, SP [email protected]  1        RESUMO             Este trabalho teve por objetivo analisar o consumo e custo de energia elétrica em cultura de soja, submetida a quatro regimes de irrigação: T1 – irrigação efetuada quando o esgotamento da água do solo atingiu 40% da reserva utilizável (RU); T2 – irrigação efetuada quando o esgotamento da água do solo atingiu 60% da RU; T3 – irrigação efetuada quando o esgotamento da água do solo atingiu 80% da RU; T4 – sem irrigação; T5 – irrigação efetuada quando o esgotamento da água do solo atingiu 40% da RU. Sendo que, para T1, T2 e T3 a lamina de água determinada pelo ETo foi obtido pelo método do tanque Classe A, já para T5 o ETo foi obtido pelo método de Penman-Monteith. A cultura da soja foi irrigada com um sistema de irrigação por aspersão convencional. O consumo de energia elétrica do sistema de irrigação foi medido por meio da utilização de um Medidor de Energia (mod. Microvip3 - Elcontrol, Itália). Os resultados desse estudo mostraram que os tratamentos irrigados com maior freqüência apresentaram menor relação consumo de energia elétrica / produção de grãos. UNITERMOS: consumo de energia elétrica e custo de energia elétrica, soja  TURCO, J. E. P.; SANTOS JUNIOR, J.; FERNANDES, E. J.CONSUMPTION AND ELECTRICITY COSTS OF ELECTRIC ENERGY ONIRRIGATED SOYBEAN CROP  2        ABSTRACT             The aim of this investigation was to evaluate the consumption and electricity costs of electric energy on soybean crop under four irrigation regimes: T1 - irrigation started when the soil water depletion reached 40% of available reserve; T2 irrigation started when the soil water depletion reached 60% of available reserve; T3 - irrigation started when the soil water depletion reached 80% of available reserve; T4 – no irrigation; T5 – irrigation started when the soil water depletion reached 40% of available reserve. The water consumption of the T1, T2 and T3 was determined by Class A pan evaporation, and for T5 by Penman – Montheith method. The soybean crop was irrigated with a conventional sprinkle system. The consumption of electric energy of irrigation system was measured by a Measurer of Energy (mod. Microvip3 - Elcontrol, Italy). The results of this study showed that treatments irrigated with larger frequency present smaller relationship consumption of electric energy / grain yield.   KEYWORDS: consumption of energy, electricity costs, soybean. 

DISTRIBUIÇÃO DA EVAPORAÇÃO EM ESTUFA PLÁSTICA NA PRIMAVERA

Irriga ◽  
2001 ◽  
Vol 6 (3) ◽  
pp. 120-127
Author(s):  
Reginaldo Ferreira Santos ◽  
Antonio Evaldo Klar
Keyword(s):  
Spatial Variability ◽  
Pan Evaporation ◽  
Spring Season ◽  
Class A ◽  
Agricultural Sciences ◽  
E Mail ◽  
Center Area ◽  
Class A Pan

DISTRIBUIÇÃO DA EVAPORAÇÃO EM ESTUFA PLÁSTICA NA PRIMAVERA  Reginaldo Ferreira SantosCentro de Ciências Exatas e Tecnológica da UNIOESTE- CP 711CEP 858114-110, Cascavel, PR - Fone: 0XX45 2203155.  E-mail: [email protected] Evaldo KlarDepartamento de Engenharia Rural - Faculdade de Ciências Agronômica- UNESP - CEP 18603-970 - Botucatu, SP. CP: 237.  E-mail:  [email protected]  1  RESUMO O presente trabalho teve como objetivo avaliar a distribuição da evaporação no interior de uma estufa plástica, com uma cultura de pimentão, através da variabilidade espacial e comparar a evaporação dos microevaporímetros com os valores do Tanque classe "A". O experimento foi conduzido no Campus da Universidade Estadual Paulista - FCA/UNESP, no período de primavera, em estufa plástica de polietileno de baixa densidade (PEBD). Na distribuição da evaporação em estufa com orientação norte/sul, verificou-se que as maiores evaporações ocorreram nas extremidades sul e norte tendente ao lado oeste. Já as menores evaporações localizaram-se no centro. No período de primavera, a evaporação média nos microevaporímetros superestimou em 55% a evaporação determinada no Tanque classe "A". UNITERMOS: evaporação, geoestatística, estufa.  SANTOS, R.F, KLAR, A.E.  EVAPORATION DISTRIBUTION INSIDE A PLASTIC TUNNEL IN THE SPRING SEASON  2  ABSTRACT                 The main aim of this study was to verify the evaporation distribution inside a plastic tunnel, with pepper crop, oriented to north/south, through spatial variability and to compare Class A Pan evaporation to punctual evaporations of 40 equidistant microevaporimeters placed from 50cm the soil. The study was carried out at the College of Agricultural Sciences/UNESP, Botucatu – SP in the spring season.  The highest evaporation occurred next to north and to south sides of the tunnel, with tendency to west. Consequently, the lowest evaporations occurred at the center area. The microevaporimeter evaporations were 55% higher than those obtained from Class A Pan. KEYWORDS: evaporation distribution, microevaporimeter.

scholarly journals Annual Actual Evapotranspiration Estimation via GIS Models of Three Empirical Methods Employing Remotely Sensed Data for the Peloponnese, Greece, and Comparison with Annual MODIS ET and Pan Evaporation Measurements

2021 ◽  
Vol 10 (8) ◽  
pp. 522
Author(s):  
Stavroula Dimitriadou ◽  
Konstantinos G. Nikolakopoulos
Keyword(s):  
Time Scale ◽  
Gradual Decrease ◽  
Actual Evapotranspiration ◽  
Pan Evaporation ◽  
Empirical Methods ◽  
Remotely Sensed Data ◽  
Upward Trend ◽  
Class A ◽  
Evapotranspiration Estimation ◽  
Class A Pan

Actual evapotranspiration (ETa) has been insufficiently investigated in Greece. This study aimed to estimate annual ETa by empirical methods (Turc, modified Turc, and Coutagne) for the Peloponnese, Greece, a Mediterranean testbed, between 2016–2019, four of the warmest years since the preindustrial era, and compare them to MODIS ET. Furthermore, measurements of annual pan evaporation (Epan) were performed for two Class A pan stations in the Peloponnese with different reliefs and conditions. The empirical methods and statistical formulae (RMSD, MB, and NMB) were developed as models in ArcMap. The outcomes of the Turc method resembled MODIS ET ranges for all years, followed by those of Coutagne. The estimates by the modified Turc method were almost identical to MODIS ET. Therefore, the modified Turc method can be used as an alternative to MODIS ET (and vice versa) for the Peloponnese for 2016–2019. Moreover, the Epan at Patras University station (semiurban, low elevation) exhibited an upward trend resembling the trends of the empirical methods over the study years, whereas the Epan at Ladonas station (higher elevation, lakeside) required investigation on a monthly time scale. Additionally, the gradual decrease of pan-water icing at Ladonas in December (from 20 d in 2016 to 0 d in 2019) could imply an undergoing decrease in snowpack storage retention across the mountains of the Peloponnese.

The effect of biosolids on cereals in central New South Wales, Australia. 1. Crop growth and yield

2005 ◽  
Vol 45 (4) ◽  
pp. 435 ◽  
Author(s):  
J. L. Cooper
Keyword(s):  
Sewage Sludge ◽  
Soil Ph ◽  
New South ◽  
New South Wales ◽  
Acid Soils ◽  
Crop Growth ◽  
Growth And Yield ◽  
South Wales ◽  
Sludge Cake ◽  
Dewatered Sewage Sludge

Two forms of biosolids, with and without lime, were applied to acid soils at 2 sites in central New South Wales. Wheat and triticale were then grown on these sites to determine the effect of biosolids on crop growth and yield. The forms of biosolids used were dewatered sewage sludge cake, and N-Viro Soil which is a lime amended sewage sludge. Dewatered sewage sludge cake was applied at rates of 0, 6, 12 and 24 dry Mg/ha, and N-Viro soil at 0, 1.5, 3.0 and 4.5 dry Mg/ha. Biosolids produced grain yield increases of over 50% at both sites, with the largest yield increases at the highest rate of dewatered sewage sludge. Continued cropping at 1 of the sites showed that significant yield increases were still obtained 3 years after the initial application. The addition of lime and N-Viro Soil raised soil pH, and produced small but long lasting yield increases. However, the main benefit of biosolids seems to have come from the nutrients they supplied rather than changes in soil pH.

Simulation of the effect of chilling injury and nitrogen supply on floret fertility and yield in rice

1994 ◽  
Vol 34 (7) ◽  
pp. 921 ◽  
Author(s):  
DC Godwin ◽  
WS Meyer ◽  
U Singh
Keyword(s):  
Management Practices ◽  
New South ◽  
Chilling Injury ◽  
New South Wales ◽  
Growth And Yield ◽  
Comprehensive Model ◽  
Night Time ◽  
Yield Data ◽  
South Wales ◽  
High Yields

Evidence exists that night temperatures <18�C immediately preceding flowering in rice crops can adversely affect floret fertility and, hence, yields. It has been suggested that sterility induced by low temperature is also influenced by floodwater depth and nitrogen (N) rate. In southern New South Wales, low night-time temperatures are believed to be a major constraint to the achievement of consistently high yields. The availability of a comprehensive model of rice growth and yield that is sensitive to this constraint would aid the development of better management practices. CERES RICE is a comprehensive model that simulates the phasic development of a rice crop, the growth of its leaves, stems, roots, and panicles, and their response to weather. It also simulates the water and N balances of the crop and the effects of stresses of water and N on the yield-forming processes. The model has been extensively tested in many rice-growing systems in both tropical and temperate environments. However, the original model was unable to simulate the level of chilling injury evident from yield data from southern New South Wales. This paper reports modifications made in the model to simulate these effects and the evaluation of the model in environments of low night temperature. Inclusion of the chilling injury effect greatly improved the accuracy of estimated yields from treatments in an extensive field experiment. However, additional testing with a wider range of data sets is needed to confirm the international applicability of the modifications.

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