scholarly journals EFFECT OF DIFFERENT IRRIGATION DEPTH ADJUSTMENT METHODS ON MAIZE YIELD COMPONENTS, GRAIN YIELD AND WATER USE EFFICIENCY

Irriga ◽  
2018 ◽  
Vol 23 (3) ◽  
pp. 454-466
Author(s):  
Leonardo Chechi ◽  
Luan Junior Kuhn ◽  
Vanderléia Fortuna ◽  
Patricia Mara De Almeida ◽  
Maurício Albertoni Scariot ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Grain Yield ◽  
Water Use Efficiency ◽  
Water Use ◽  
Yield Components ◽  
Block Design ◽  
Maize Yield ◽  
Irrigation Depth ◽  
Moisture Equivalent ◽  
Use Efficiency

As the water stress is one of the main causes for the low maize yield in Brazil, this study aimed to evaluate the yield components, grain yield and the water use efficiency of maize crop submitted to different methods of irrigation depth adjustment and validate the “Lâmina” spreadsheet to recommend irrigation depth in this crop. The treatments applied were: non-use of irrigation (control); irrigation depth adjustment provided by” Lâmina” spreadsheet (Lâmina); soil moisture equivalent to actual capacity of water in the soil at 55% of the total soil water capacity (55% RWC); and soil moisture equivalent to 100% of the field capacity (100% FC). The experimental design was a randomized block design with four replications, each experimental unit consists of a plot 3 meters wide and 3 meters long. The variables analyzed were total water applied, dry matter, ears per plant, kernel rows per ear, kernels per row, kernels per ear, one thousand kernels weight, grain yield and water use efficiency. Grain yields were similar between irrigated treatments, showing significant differences compared to the control. The Lâmina and 55% RWC showed the best results for water use efficiency and yield components. The Lâmina treatment used the least amount of water, with high yields, contributing to the rational water use in irrigated agricultural systems.

scholarly journals Optimizing Grain Yield and Water Use Efficiency Based on the Relationship between Leaf Area Index and Evapotranspiration

Agriculture ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 313
Author(s):  
Guoqiang Zhang ◽  
Bo Ming ◽  
Dongping Shen ◽  
Ruizhi Xie ◽  
Peng Hou ◽  
...  
Keyword(s):  
Grain Yield ◽  
Water Use Efficiency ◽  
Leaf Area Index ◽  
Water Use ◽  
Plant Density ◽  
Maize Yield ◽  
Area Index ◽  
Irrigation Level ◽  
Use Efficiency ◽  
The Relationship

Achieving optimal balance between maize yield and water use efficiency is an important challenge for irrigation maize production in arid areas. In this study, we conducted an experiment in Xinjiang China in 2016 and 2017 to quantify the response of maize yield and water use to plant density and irrigation schedules. The treatments included four irrigation levels: 360 (W1), 480 (W2), 600 (W3), and 720 mm (W4), and five plant densities: 7.5 (D1), 9.0 (D2), 10.5 (D3), 12.0 (D4), and 13.5 plants m−2 (D5). The results showed that increasing the plant density and the irrigation level could both significantly increase the leaf area index (LAI). However, LAI expansion significantly increased evapotranspiration (ETa) under irrigation. The combination of irrigation level 600 mm (W3) and plant density 12.0 plants m−2 (D4) produced the highest maize yield (21.0–21.2 t ha−1), ETa (784.1–797.8 mm), and water use efficiency (WUE) (2.64–2.70 kg m−3), with an LAI of 8.5–8.7 at the silking stage. The relationship between LAI and grain yield and evapotranspiration were quantified, and, based on this, the relationship between water use and maize productivity was analyzed. Moreover, the optimal LAI was established to determine the reasonable irrigation level and coordinate the relationship between the increase in grain yield and the decrease in water use efficiency.

scholarly journals EFEITO DE DIFERENTES LÂMINAS DE IRRIGAÇÃO NAS VARIÁVEIS DE DESENVOLVIMENTO E PRODUÇÃO DO CAFEEIRO IRRIGADO POR PIVÔ CENTRAL

Irriga ◽  
2015 ◽  
Vol 20 (3) ◽  
pp. 528-543 ◽  
Author(s):  
Marcelo Rossi Vicente ◽  
Everardo Chartuni Mantovani ◽  
ANDRÉ LUÍS TEIXEIRA FERNANDES ◽  
FÁBIO TEIXEIRA DELAZARI ◽  
EDMILSON MARQUES FIGUEREDO
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Coffea Arabica ◽  
Block Design ◽  
Irrigation Management ◽  
Randomized Block Design ◽  
Center Pivot ◽  
Irrigation Depth ◽  
Use Efficiency ◽  
Level Of Significance

EFEITO DE DIFERENTES LÂMINAS DE IRRIGAÇÃO NAS VARIÁVEIS DE DESENVOLVIMENTO E PRODUÇÃO DO CAFEEIRO IRRIGADO POR PIVÔ CENTRAL  MARCELO ROSSI VICENTE1; EVERARDO CHARTUNI MANTOVANI2; ANDRÉ LUÍS TEIXEIRA FERNANDES3; FÁBIO TEIXEIRA DELAZARI4 E EDMILSON MARQUES FIGUEREDO5 1 Instituto Federal do Norte de Minas Gerais, Salinas, MG, [email protected] Departamento de Engenharia Agrícola, Universidade Federal de Viçosa, Viçosa, MG, [email protected] Universidade de Uberaba, Uberaba, MG, Fábio Teixeira Delazari, [email protected] Departamento de Fitotecnia, Universidade Federal de Viçosa, Viçosa, MG, [email protected] Bahia Farm Show, Luís Eduardo Magalhães, BA, [email protected]  1      RESUMO O presente trabalho foi conduzido com objetivo de avaliar o efeito de diferentes lâminas de irrigação nas variáveis de produção, estádios maturação de frutos e eficiência no uso da água pela cultura do cafeeiro irrigado por pivô central equipado com emissores LEPA, na região Oeste da Bahia. Realizou-se o trabalho na fazenda Café do Rio Branco, localizada em Barreiras - BA em cafeeiros adultos da variedade Catuaí IAC 144. O experimento obedeceu ao delineamento de blocos casualizados, composto de cinco tratamentos correspondentes à 70, 85, 100, 125 e 150% da lâmina de irrigação determinada pelo software Irriplus. As produtividades, os estádios de maturação dos frutos e eficiência no uso da água do cafeeiro foram submetidos à análise de variância e regressão, em que os modelos foram escolhidos baseados na significância dos coeficientes de regressão utilizando-se o teste t de 1 a 10% de probabilidade. Diante dos resultados obtidos, pode-se concluir que, a produtividade da cultura do café foi expressivamente dependente da lâmina de água aplicada, sendo que a maior produtividade (60 sc ha-1) foi alcançada com a lâmina de irrigação acumulada de 661 mm ano-1, correspondente à 96% da lâmina de irrigação determinada pelo software Irriplus. A lâmina que proporcionou a máxima porcentagem de frutos cereja (44,1%) foi de 723 mm ano-1 (105%). A lâmina que proporcionou a maior eficiência no uso da água foi de 480 mm ano-1 (70%). Palavras-Chave: Coffea arabica, manejo da irrigação, emissor LEPA, uso eficiente da água.  VICENTE, M. R.; MANTOVANI, E. M.; FERNANDES, A. L. T.; DELAZARI, F. T.; FIGUEREDO, E. M.EFFECTS OF DIFFERENT LEVELS OF IRRIGATION DEPTHS   ON GROWTH AND PRODUCTION VARIABLES OF COFFEE UNDER CENTER PIVOT  IRRIGATION     2        ABSTRACT This study aimed to evaluate the effect of different irrigation depths on yield, ripening stages and water use efficiency by the   coffee crop irrigated by center pivot with LEPA emitters in western Bahia. The experiment was carried out at the Café Rio Branco farm, in Barreiras city, Bahia state, using  adult coffee trees of cv. Catuaí IAC 144. A completely randomized block design was used with five treatments consisting of 70, 85, 100, 125 and 150 % of ETc, determined by the Irriplus software.  Data of yield, fruit ripening stage and water use efficiency were evaluated   using analyses of variance  and regression. Models were chosen based on level of significance of   regression coefficients using the Student´s t-test, 1 to  10% probability.  Based on the results,  coffee crop yield was highly dependent on  the water depth applied. The highest yield (3.6 ton/ha) was achieved  using accumulated irrigation depth of 661 mm year -1 (96 % of Etc).  Water depths of   723 mm year-1 (105 %) and 480 mm year-1 (70% ETc)  provided the highest percentage of cherry fruit (44.1%) and the highest water use efficiency, respectively. Keywords: Coffea arábica, irrigation management, LEPA emitter, water use efficiency.

scholarly journals Effect of Deficit Irrigation on Yield and Water Use Efficiency of Maize at Selekleka District, Ethiopia

2020 ◽  
Vol 6 ◽  
pp. 127-135
Author(s):  
Ekubay Tesfay Gebreigziabher
Keyword(s):  
Grain Yield ◽  
Water Use Efficiency ◽  
Water Use ◽  
Irrigation Water ◽  
Deficit Irrigation ◽  
Agricultural Research ◽  
Furrow Irrigation ◽  
Irrigation Depth ◽  
Use Efficiency ◽  
Alternate Furrow Irrigation

Irrigation water availability is diminishing in many areas of the Ethiopian regions, which require many irrigators to consider deficit-irrigation strategy. This study investigated the response of maize (Zea mays L.) to moisture deficit under conventional, alternate and fixed furrow irrigation systems combined with three irrigation amounts over a two years period. The field experiment was conducted at Selekleka Agricultural Research Farm of Shire-Maitsebri Agricultural Research Center. A randomized complete block design (RCBD) with three replications was used. Irrigation depth was monitored using a calibrated 2-inch throat Parshall flume. The effects of the treatments were evaluated in terms of grain yield, dry above-ground biomass, plant height, cob length and water use efficiency. The two years combined result indicated that  net irrigation water applied in alternate furrow irrigation with full amount irrigation depth (100% ETc AFI) treatments was half (3773.5 m3/ha) than that of applied to the conventional furrow with full irrigation amount (CFI with 100% ETc) treatments (7546.9 m3/ha). Despite the very significant reduction in irrigation water used with alternate furrow irrigation (AFI), there was insignificant grain yield reduction in maize(8.31%) as compared to control treatment (CFI with100% ETc). In addition, we also obtained significantly (p<0.001) higher crop water use efficiency of 1.889 kg/m3 in alternate furrow irrigation (AFI), than that was obtained as 0.988 kg/m3 in conventional furrow irrigation (CFI). In view of the results, alternate furrow irrigation method (AFI) is taken as promising for conservation of water (3773.5 m3/ha), time (23:22'50" hours/ha), labor (217.36 USD/ha) and fuel (303.79 USD/ha) for users diverting water from the source to their fields using pump without significant trade-off in yield.

scholarly journals PRODUCTION PERFORMANCE OF BRS TUMUCUMAQUE COWPEA UNDER DIFFERENT PLANT DENSITIES AND WATER REGIMES1

2020 ◽  
Vol 33 (1) ◽  
pp. 205-216
Author(s):  
JOSIMAR SOARES DA SILVA JÚNIOR ◽  
EDSON ALVES BASTOS ◽  
MILTON JOSÉ CARDOSO ◽  
ADERSON SOARES DE ANDRADE JUNIOR ◽  
VALDENIR QUEIROZ RIBEIRO
Keyword(s):  
Grain Yield ◽  
Water Use Efficiency ◽  
Water Use ◽  
Block Design ◽  
Production Performance ◽  
Water Regimes ◽  
The North ◽  
Yield Production ◽  
Plant Densities ◽  
Use Efficiency

ABSTRACT Cowpea is a legume of great socioeconomic importance for the North and Northeast regions of Brazil. However, studies to evaluate its production performance when cultivated under irrigated regime and under different plant densities are necessary. The objective of this work was to evaluate the effects of different water regimes and different plant densities on grain yield, production components and water use efficiency, and on the correlation between grain yield and production components of BRS Tumucumaque cowpea cultivar. The experiment was carried out at Embrapa Meio-Norte experimental area, in Teresina, Piauí State, Brazil, from June to September 2017, in an Argissolo Vermelho-Amarelo eutrófico (Ultisol). A randomized complete block design was used, in a split-plot scheme with four replicates, in which the water regimes occupied the plots (187.7; 233.5; 263.5 and 288.7 mm) and plant densities, the subplots (12; 16; 20 and 24 plants m-2). The number of pods per plant, number of pods per square meter, pod length, dry grain yield and water use efficiency were evaluated. The maximum dry grain yield reached was 1,694.46 kg ha-1, with application of 288.7 mm and density of 20.4 plants m-2. The production component number of pods per square meter was the most correlated with dry grain yield.

scholarly journals Rendimento de grãos e eficiência do uso de água no cultivo de milho geneticamente modificado no município de Teresina - PI, Brasil, em condições climáticas contrastantes (Grain yield and water use efficiency of genetically modified corn in Piauí, Brazil)

2015 ◽  
Vol 8 ◽  
pp. 697
Author(s):  
Milton José Cardoso ◽  
Hélio Wilson Lemos de Carvalho ◽  
Edson Alves Bastos ◽  
Cleso Antonio Patto Pacheco ◽  
Leonardo Melo Pereira da Rocha
Keyword(s):  
Grain Yield ◽  
Water Use Efficiency ◽  
Water Use ◽  
Climate Adaptation ◽  
Genetically Modified ◽  
Block Design ◽  
Maximum Temperature ◽  
Average Maximum ◽  
Use Efficiency ◽  
H 30

A adaptação climática de qualquer espécie vegetal tem estreita relação com seu padrão fenológico, influenciando na sua distribuição geográfica e sua flutuação nos ecossistemas. O objetivo do trabalho foi avaliar o comportamento de 33 híbridos (26 híbridos simples, 6 híbridos triplos e um híbrido duplo) geneticamente modificados de milho em situações climáticas contrastantes - épocas de semeadura (ES), sob irrigação. O delineamento experimental foi o de blocos casualizados com duas repetições. Os experimentos foram semeados em área da Embrapa Meio-Norte, município de Teresina, PI, em julho e setembro/2013. A temperatura máxima média no período do pendoamento ao espigamento na primeira época foi de 36,7 oC e na segunda época de 38,8 oC, contribuindo para uma redução na eficiência de uso da água (EUA) e dos componentes de rendimentos, números de espigas por área e do peso de espiga na ES de setembro. O rendimento de grãos e a EUA da ES de junho (9.876 kg ha-1; 17,3 kg ha-1 mm-1) foi superior em 25,1 % e 42,27 %, respectivamente, em relação a ES de setembro (7.900 kg ha-1; 11,97 kg ha-1 mm-1). Os híbridos AG 8041 PRO, 3646 HX, RB 9221 PRO, P 4225 H, 30 F 53 YH apresentam tolerância a altas temperaturas e usam melhor a água para a produção de grãos. The climate adaptation of any plant species is closely related to its phenology, influencing on its geographical distribution and its fluctuation in ecosystems. The objective this work was to evaluate the performance of 33 hybrids (26 single hybrids, six triples hybrids and one double hybrid) genetically modified corn in contrasting climatic conditions (two sowing dates) under irrigation. The experimental design was a randomized complete block design with two replications. The experiments were sown in the Embrapa Mid-North, Teresina, Piauí State, in July and September / 2013. The average maximum temperature from bolting to heading during the first season was 36.7 °C and in second one was 38.8 oC, reducing the water use efficiency (WUE) and yield components, ear number per area and ear weight in september sowing. The grain yield and WUE of sowing June (9,876 kg ha-1, 17.3 kg ha-1 mm-1) was higher 25.1% and 42.27%, respectively, compared to sowing September (7,900 kg ha-1, 11.97 kg ha-1 mm-1). AG 8041 PRO, P 3646 HX, RB 9221 PRO, P 4225 H, 30 F 53 YH hybrids present tolerant to high temperatures and more efficient water use. Keywords: Heat tolerant, sowing date, Zea mays (L.).

scholarly journals Effect of different soil moisture regimes on plant growth and water use efficiency of Sunflower: experimental study and modeling

2021 ◽  
Vol 45 (1) ◽  
Author(s):  
Rajesh Kumar Soothar ◽  
Ashutus Singha ◽  
Shakeel Ahmed Soomro ◽  
Azhar-u-ddin Chachar ◽  
Faiza Kalhoro ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Grain Yield ◽  
Water Use Efficiency ◽  
Water Use ◽  
Crop Yield ◽  
Growth And Yield ◽  
Irrigated Agriculture ◽  
Yield Response ◽  
Aquacrop Model ◽  
Use Efficiency

Abstract Background Climate change and increasing demand in non-agricultural sectors profoundly affect the availability and quality of water resources for irrigated agriculture. The FAO AquaCrop simulation model provides a sound theoretical framework to investigate crop yield response to environmental stress. This model has successfully simulated crop growth and yield as influenced by varying soil moisture environments for crops. Integrating crop models that simulate the effects of water on crop yield with targeted experimentation can facilitate the development of irrigation strategies for high yield procurement and improving farm level water management and water use efficiency (WUE) under climatic condition of District Hyderabad, Sindh, Pakistan. Results This study was based on completely randomized block design with three treatments including T1 (30% soil moisture depletion), T2 (50% soil moisture depletion) and T3 (70% soil moisture depletion) with three replicates. In order to determine the crop water requirements under desired treatments, the gypsum blocks were used for computing the daily soil moisture depletion. The result shows that total volume of water applied to crop under T1, T2 and T3 was 9689, 5200 and 2045 m3 ha−1, respectively. As a result, the grain yield under T1, T2 and T3 was 13.2, 12.1 and 14.3 t ha−1, respectively. These results advocate that total yield of crop under T1 and T2 was less as compared to T3. The T3 gave higher yield and WUE compared than other treatments. On the other hand, results revealed that the simulated sunflower yields showed a good agreement with their measured under T3. The simulated grain yield was 15.5 t ha−1, while the measured yield varied from 12.1 to 14.3 t ha−1. This study suggested that WUE under T3 was more as compared to T1 and T2. The results showed that the T3 gave the highest crop yield in relation to WUE and optimize yield of sunflower crop under water scarcity. Conclusion The Aquacrop model could very well predict crop yield and WUE at T3 under experiential region for sunflower production.

scholarly journals Nitrogen Time of Application Impact on Productivity, Water Use Efficiency and Agronomic Efficiency of Maize in a Semi-arid Environment

2018 ◽  
Vol 10 (8) ◽  
pp. 72
Author(s):  
S. Lamptey ◽  
Lingling Li ◽  
Junhong Xie
Keyword(s):  
Zea Mays ◽  
Grain Yield ◽  
Water Use Efficiency ◽  
Water Use ◽  
Field Experiments ◽  
Zea Mays L ◽  
Block Design ◽  
Limiting Factor ◽  
Time Of Application ◽  
Use Efficiency

Water is one of the most important limiting factor of rainfed continuous maize (Zea mays L.) cropping systems in northwest of China. A three continuous year field experiments were conducted to study the influence of different nitrogen time of application on grain yield and water use efficiency of maize (Zea mays L.) in the Western Loess plateau. The experiment was laid in a randomized complete block design with two treatments and three replicates. Treatments were; (one-third application of N at sowing + two-third application at pre-flowering) and (one-third application of N at sowing + one-third pre-flowering + one-third at milking) as T1 and T2 respectively. The results showed that, T1 significantly increased grain yield by 9% in 2014 and 2016; and WUE by 11% in 2016 compared to T2. T1 increased AE by 43% compared to T2. Our results indicate that ⅓ application of Nitrogen at sowing and ⅔ application of Nitrogen at pre–flowering (T1) for maize is more appropriate for sustainable maize production in terms of satisfactory grain-N recoveries and low environmental losses of N fertilizer.

scholarly journals ROLE OF PROLINE ACID IN IMPROVING SUNFLOWER YIELD AND YIELD COMPONENTS UNDER DEFICIT CONDITIONS WATER

2016 ◽  
Vol 47 (2) ◽  
Author(s):  
Abass & Alag
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Seed Yield ◽  
Yield Components ◽  
Block Design ◽  
Irrigation Treatment ◽  
Control Treatment ◽  
Yield Reduction ◽  
Available Water ◽  
Use Efficiency

A field study was conducted during the spring and autumn seasons of 2014 at the experimental farm of Field Crop Department, College of  Agriculture (Abo-Ghraib) - University of Baghdad, to study the effect of Irrigation deficiency quantities and concentrations of Proline acid on yield , its components, water consumptive and water use efficiency of sunflower (Helianthus annus L. ) for Luleo hybrid. Randomized Complete Block Design (RCBD) in arrangement of a split-plot with three replications were used. Irrigation treatments, control (depletion  50% of available water) and 60% , 50%  40% of control treatment, were assigned as a main plots. while proline acid concentrations of 0, 30, 60 and 90 mg.L-1 were assigned as a subplots. The results showed that there is no significant differences between the control treatment and 60% of the control for  the period from planting to 50% flowering, number of leaves, relative water content, nitrogen concentration in leaves, fertilization percentage, number of seeds in the head,100 seed weight and seeds yield reaching 3.90, 2.46 t.ha-1  and 3.78 , 2.41 t.ha-1 for spring and autumn seasons respectively. which indicates the possibility of saving 40% of the water consumption which is estimated 1920.00, 2960.00 m3. ha-1. Season-1  for two seasons respectively without any yield reduction. While the percentage of decline in seeds yield for treatments 50% and 40% from the control treatment for spring season were 14.61%  , 19.74% respectively and 21.95 % , 33.33% for autumn season comparing with control. Irrigation treatment 40%, 60% of the control treatments gave the best water use efficiency for both seasons respectively. a concentrations of Proline acid affect significantly most of studied traits. Increasing of Proline to 60mg.L-1 gave the to increase in fertilization percentage was  و70.2081.% 100 seed weight7.12 و7.52 gm, seed yield 3.75, 2.21 t.ha-1 and water use efficiency 0.84 و0.29  kg seed.m-3 water comparing with control for two seasons respectively .The interaction between irrigation and Proline acid showed a significantly effect on all characteristics seeds yield components traits in both seasons. We therefore recommend that in case of limited  irrigation water  by %60 by the need of the full irrigation (50 % depletion of available water) without a significant decrease in product seed yield, in addition to possibility treatment of  sunflower plants with Proline acid with 60 mg .L-1 to improvement capacity of water stress.

scholarly journals Silicate fertilizer and irrigation depth in corn production

Revista CERES ◽  
2013 ◽  
Vol 60 (4) ◽  
pp. 563-568 ◽  
Author(s):  
Edvaldo Eloy Dantas Júnior ◽  
Lucia Helena Garófala Chaves ◽  
Fernando Antônio Melo da Costa ◽  
Hans Raj Gheyi
Keyword(s):  
Grain Yield ◽  
Water Use Efficiency ◽  
Water Use ◽  
Magnesium Silicate ◽  
Corn Yield ◽  
Corn Production ◽  
Irrigation Level ◽  
Calcium Magnesium ◽  
Irrigation Depth ◽  
Use Efficiency

Calcium-magnesium silicates improve the soil physicochemical properties and provide benefits to plant nutrition, since they are sources of silica, calcium and magnesium. The objective of this study was to evaluate the grain yield of irrigated corn fertilized with calcium-magnesium silicate. The experiment was carried out in a greenhouse in Campina Grande - PB, Brazil, using plastic pots containing 80 kg of soil. The treatments consisted of the combination of four irrigation depths, related to water replacement of 50, 75, 100 and 125% of the crop evapotranspiration, with fertilizer levels of 0, 82, 164 and 246 g of calcium-magnesium silicate, with three replications. The experimental design was in randomized blocks, with the irrigation depths distributed in bands while the silicon levels constituted the subplots. Corn yield was influenced by calcium-magnesium silicate and by irrigation depth, obtaining the greatest grain yield with the dose of 164 g pot-1 irrigated at the highest water level. The water-use efficiency of in corn production tended to decrease when the irrigation depth was increased. The best water-use efficiency was observed when the irrigation level was between 87 and 174 mm, and the dose of silicate was 164 g pot-1.

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