scholarly journals Assessing the productivity of coriander under different irrigation depths and fertilizers applied with continuous and pulsed drip systems

2021 ◽  
Author(s):  
Valentin Ruben Orcon Zamora ◽  
Manassés Mesquita da Silva ◽  
José Amilton Santos Júnior ◽  
Gerônimo Ferreira da Silva ◽  
Dimas Menezes ◽  
...  
Keyword(s):  
Crop Yields ◽  
Irrigation Management ◽  
Management Strategies ◽  
Northeast Brazil ◽  
Crop Evapotranspiration ◽  
Essential Factor ◽  
Continuous Irrigation ◽  
Continuous Application ◽  
Irrigation Depth ◽  
Pulsed Irrigation

Abstract In this study, the authors analyzed the consequences of irrigation management strategies as an essential factor to save water and maintain high crop yields. The present research aimed at comparing coriander (Coriandrum sativum L.), cv. Verdão, yields under fertigation via drip irrigation with a continuous application and in pulses, with 40, 60, 80, 100 and 120% of the crop evapotranspiration (ETc) being recovered. These treatments were distributed in randomized blocks in a 2 × 5 factorial scheme, with three replications, in a greenhouse located at the Federal Rural University of Pernambuco, northeast Brazil (08°01′6.50″ S and 34°56′46″ W, average elevation 6.5 m). The continuous irrigation consisted of the application of water depth in a single daily event, while pulsed irrigation comprised the application of the same irrigation depth split up into five events with a 1-hour interval between pulses. Crop evapotranspiration (ETc) was determined via the water balance by lysimetric drainage. The fertilizers were applied in every watering. The biometric and productivity crop pointed that pulsed irrigation to a mean depth of 58% of the ETc corresponds to the results obtained with the application of the depth equivalent to 100% of the ETc by continuous irrigation, consequently with reduced input costs.

ÍNDICE DE SATISFAÇÃO DAS DEMANDAS DE ÁGUA E PRODUTIVIDADE DO FEIJÃO EM DIFERENTES LÂMINAS DE IRRIGAÇÃO EM COLATINA - ES

2017 ◽  
Vol 32 (1) ◽  
pp. 81
Author(s):  
Ramon Amaro de Sales ◽  
Clodoaldo Spadeto Ambrozim ◽  
Robson Prucoli Posse ◽  
Evandro Chaves de Oliveira ◽  
Sheila Prucoli Posse
Keyword(s):  
Water Deficit ◽  
Irrigation Management ◽  
Need Satisfaction ◽  
Maximum Amount ◽  
Soil Water Deficit ◽  
Crop Evapotranspiration ◽  
Water Deficiency ◽  
Satisfaction Index ◽  
Irrigation Depth ◽  
Phenological Phases

Um dos fatores que pode afetar a produtividade do feijoeiro é a razão da evapotranspiração real  e a evapotranspiração da cultura, o qual indica a real quantidade de água que a planta consome em relação à quantidade de água máxima que a planta consumiria, também representada como Índice de Satisfação das Necessidades de Água. Com objetivo de determinar este índice para o feijoeiro, em seus respectivos estágios de desenvolvimento, visando melhorar o manejo de irrigação, ajustando-se à melhor lâmina de irrigação, bem como a máxima produtividade, foram analisadas as cultivares Majestoso e Valente, na região de Colatina-ES, durante o período de 12/07/2012 a 10/10/2012. Uma maior produtividade foi observada em função do aumento dos valores do Índice de Satisfação. A resposta foi a uma função quadrática, havendo um ponto a partir do qual a diminuição dos valores de ISNA reduz a produtividade das cultivares, à medida que reduz a lâmina de irrigação. O cultivar Majestoso apresentou maior tolerância à deficiência hídrica em relação a cultivar Valente, nas condições edafoclimáticas de Colatina/ES.PALAVRAS-CHAVE: fases fenológicas, evapotranspiração, deficiência hídrica. SATISFACTION INDEX OF WATER AND PRODUCTIVITY DEMANDS ON BEANS ON DIFFERENT IRRIGATION DEPTHS IN COLATINA – ESABSTRACT: One of the factors that can affect bean productivity is the ratio of actual evapotranspiration and crop evapotranspiration, which indicates the actual amount of water that the plant consumes in relation to the maximum amount of water the plant would consume, also represented as Index Of Water Needs Satisfaction. In order to determine this index for bean, in the respective stages of development, in order to improve irrigation management, adjusting to the best irrigation depth, as well as the maximum productivity, the cultivars Majestoso and Valente in de region of Colatina-ES, during the period from 07/07/2012 to 10/10/2012. Higher productivity was observed as a result of the increase in the Water Need Satisfaction Index, in which, as soil water deficit levels increased with the imposition of irrigation blades away from the sprinkler, ISNA presented lower values and consequently, its productivity, being noticed in the ISNA values below 0.83. The cultivar Majestoso presented greater tolerance to the water deficit in relation to Valente cultivar, in the edaphoclimatic conditions of Colatina-ES.KEYWORDS: phenological phases, evapotranspiration, water deficiency.

scholarly journals Groundwater-Based Irrigation in the US – Challenges and Progress

2021 ◽  
Author(s):  
Blessing Masasi
Keyword(s):  
Water Use ◽  
Crop Yields ◽  
Groundwater Resources ◽  
Irrigation Management ◽  
Management Strategies ◽  
Wastewater Reuse ◽  
The United States ◽  
Irrigated Agriculture ◽  
The Us ◽  
Agricultural Regions

Even though groundwater-based irrigation has increased agricultural productivity and economic activity in the United States (US), the current rate of groundwater withdrawals from major aquifers could significantly affect the sustainability of agricultural production systems in the near future. In the major agricultural regions, producers are now facing challenges to irrigate to meet full crop water needs. There is an increasing need to strategize irrigation management under various climatic and environmental conditions to optimize water use in agriculture while optimizing crop yields. This study reviews some of the major challenges facing irrigated agriculture in the US and the potential measures to ensure the sustainability of groundwater-based irrigation. Identified challenges included diminishing quantity and quality of groundwater resources, frequent droughts, low adoption rates of precision irrigation technologies, and rising energy requirements for irrigation abstractions. Irrigation efficiency improvements, shifting to high water use efficiency crops, wastewater reuse, groundwater monitoring, availing incentives, and policy changes, were identified as promising water management strategies to ensure irrigation sustainability. The success of these strategies will depend on the uptake and adoption by the producers in the affected agricultural regions.

scholarly journals Center pivot irrigation management in maize hybrids and the incidence of stalk rot

2020 ◽  
Vol 24 (12) ◽  
pp. 840-846
Author(s):  
Irineu E. Kühn ◽  
Mayara F. Cotrim ◽  
Ricardo Gava ◽  
Rita de C. F. Alvarez ◽  
Job T. de Oliveira ◽  
...  
Keyword(s):  
Block Design ◽  
Irrigation Management ◽  
Management Strategies ◽  
Irrigation Frequency ◽  
Maize Hybrids ◽  
Stalk Rot ◽  
Randomized Block Design ◽  
Center Pivot ◽  
Irrigation Depth ◽  
The One

ABSTRACT This study aimed to verify the incidence of Fusarium spp. in commercial maize hybrids and irrigation management strategies utilizing center pivot systems. The experiment was carried out during the second season in a randomized block design with a split-plot arrangement with five maize hybrids (2B810, MG580, AS1633, DKB290, and AG8544). The plots were irrigated with five frequencies (1, 2, 3, 4, and 5 days) in one experiment, and five water depths (at 25, 50, 75, 100, and 125% of crop evapotranspiration) in another experiment. Plant height, ear insertion height, moisture at harvest time, yield, and incidence of stalk rot were evaluated. Neither irrigation frequency nor irrigation depth influenced the incidence of disease. The one-day irrigation frequency provided the highest yield for maize hybrids. Hybrid 2B810 showed the highest yield and the lowest incidence of the disease.

scholarly journals Biomass allocation and water use efficiency in fertigated sweet pepper

2012 ◽  
Vol 32 (2) ◽  
pp. 315-325 ◽  
Author(s):  
Francimar da S. Albuquerque ◽  
Ênio F. de F. e Silva ◽  
Marcus F. F. N. Nunes ◽  
Amanda E. R. de Souza
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Biomass Allocation ◽  
Irrigation Management ◽  
Sweet Pepper ◽  
Crop Evapotranspiration ◽  
Plant Life ◽  
Dry Biomass ◽  
Irrigation Depth ◽  
Use Efficiency

The use of productivity information and efficiency of water use is important for the economic analysis of production and irrigation management, and also helps the economy of water use, which is essential to plant life. The objective of this study was to evaluate the biomass allocation, the water use efficiency and water content in fruits of sweet pepper cropped under the influence of irrigation blades and potassium doses. The statistic design was a completely randomized factorial scheme (5 x 2) and four replications, with five irrigation blades (80; 90; 100; 110 and 120% of crop evapotranspiration) and two levels of potassium (80 and 120 kg K2O ha-1 ), applied according to phenological phase, through a system of drip irrigation with self-compensated drippers, installed in a battery of 40 drainage lysimeters cultivated with sweet pepper (Maximos F1), at Federal Rural University of Pernambuco (UFRPE), Recife, state of Pernambuco, Brazil. The dry biomass production of sweet pepper was influenced by fertigation regimes; when it was set the lowest dose, estimates of the efficiency of water use and moisture in the fruit occurred with the use of irrigation depth of 97 and 95% of ETc, respectively.

scholarly journals Drip pulses and soil mulching effect on american crisphead lettuce yield

2015 ◽  
Vol 35 (6) ◽  
pp. 1009-1018 ◽  
Author(s):  
Willian F. de Almeida ◽  
Luiz A. Lima ◽  
Geraldo M. Pereira
Keyword(s):  
Experimental Design ◽  
Irrigation Water ◽  
Crop Yields ◽  
Irrigation Management ◽  
Water Efficiency ◽  
Crop Evapotranspiration ◽  
Plastic Mulching ◽  
Black Plastic ◽  
Lettuce Yield ◽  
Water Depths

ABSTRACT An experiment was conducted in a greenhouse at the Federal University of Lavras cultivated with American lettuce, cv. Raider-Plus. The aim of this study was to evaluate the effects of irrigation water depths applied by drip pulses and of soil coverage on crop yields and efficiency of water use. The experimental design used was randomized blocks with eight treatments and three replications, totaling twenty-four plots. The treatments consisted of soil with and without coverage (double-sided white and black plastic) associated with four irrigation management levels. Irrigation management consisted in reposition of irrigation depths based on crop evapotranspiration (ETc) with D1-100% of ETc, applied continuously (control), and D2 - 100% of ETc, D3 - 75% of ETc, and D4-50% of ETc, applied by pulses. Irrigation by pulses consisted in splitting the depths into six irrigation pulses with intervals of fifty minutes of rest. It was observed that pulse irrigation saved 25% of water in treatment without mulching and 50% when plastic mulching was used, contributing substantially to improve irrigation water efficiency.

scholarly journals Simulating Annual Irrigation Requirement for Citrus on Excessively Drained Soils

HortScience ◽  
2006 ◽  
Vol 41 (6) ◽  
pp. 1487-1492 ◽  
Author(s):  
T. Adair Wheaton ◽  
Lawrence R. Parsons ◽  
K.T. Morgan
Keyword(s):  
Root Zone ◽  
Irrigation Management ◽  
Management Strategies ◽  
Rooting Depth ◽  
Annual Rainfall ◽  
Central Florida ◽  
Available Water ◽  
Wide Range ◽  
Irrigation Depth ◽  
Irrigation Requirements

A water use simulation for citrus (Citrus sinensis) was used to estimate the effects of climate, soil-available water, rooting depth, allowable depletion of available water, and partial coverage irrigation on the annual irrigation requirements. The soil in the study was excessively drained Candler sand (hyperthermic, uncoated Typic Quartzipsamments) of the Central Florida Ridge. Variation of annual rainfall from 667 to 1827 mm had a relatively small impact on annual irrigation requirements. Soil-available water, depth of root zone, and allowable depletion of available water all affected irrigation management and the number of irrigations annually. Simulated annual irrigation requirements varied over a wide range depending on the allowable depletion of soil-available water, irrigation depth, and the fraction of the land area that is irrigated. Effective rain estimated by the TR21 method during months of high rainfall was higher than estimates by the water budget. Monthly irrigation requirements varied seasonally and peaked in normally dry spring months of April and May. The irrigation simulation is a useful tool for examining the range of management strategies that can be considered for citrus.

scholarly journals Simulation of soil water balance and partitioning of evapotranspiration of maize grown in two growing seasons in Southern Brazil

2017 ◽  
Vol 47 (12) ◽  
Author(s):  
Viviane Schons de Ávila ◽  
Mirta Teresinha Petry ◽  
Reimar Carlesso ◽  
Juliano Dalcin Martins ◽  
María Gabriela González ◽  
...  
Keyword(s):  
Water Balance ◽  
Soil Water ◽  
Irrigation System ◽  
Irrigation Management ◽  
Management Strategies ◽  
Soil Water Balance ◽  
Crop Evapotranspiration ◽  
Crop Season ◽  
Maize Crop ◽  
Growing Seasons

ABSTRACT: The objective of this study was to simulate the variation of the available soil water during maize crop growth, in two different sowing times (first and second growing season), using a drip irrigation system. The treatments consisted of different irrigation strategies (full to deficit). The SIMDualKc simulation model was used to determine the daily soil water balance and crop evapotranspiration using the dual crop coefficient approach. Soil, climate, crop and irrigation parameters were used as input data. Two experiments were carried out in a rainout shelter composed of two metallic structures (16x10m) in the city of Santa Maria, Rio Grande do Sul, Brazil, during 2010/11 (second crop, season 1) and 2011/12 (first crop, season 2) growing seasons, under no-tillage system. The simulations showed that all the irrigation management strategies used in season 2 resulted in soil water deficit, while only two strategies showed deficit in season 1. Results showed good agreement between observed and simulated soil water data, with an R2 ranging from 0.86 to 0.99 and the root mean square error ranging from 2.7 to 5.6% of the total available water for seasons 1 and 2, respectively. The observed results of water balance showed that maize grown in season 2 presented higher water consumption compared to season 1, due to the higher atmospheric demand of season 2. The SIMDualKc model allowed the partitioning of crop evapotranspiration into soil evaporation and crop transpiration, demonstrating that the vegetative growth subperiod presented the greatest differences between the two seasons compared to the others growth phases.

scholarly journals Biological control agents in the integrated nematode management of potato in Egypt

2020 ◽  
Vol 30 (1) ◽  
Author(s):  
Mahfouz M. M. Abd-Elgawad
Keyword(s):  
Biological Control ◽  
Crop Yields ◽  
Integrated Management ◽  
Management Strategies ◽  
Economic Value ◽  
Potato Production ◽  
Parasitic Nematodes ◽  
Main Body ◽  
Biological Control Agents ◽  
Economic Significance

Abstract Background Potato represents Egypt’s largest vegetable export crop. Many plant-parasitic nematodes (PPNs) are globally inflicting damage to potato plants. In Egypt, their economic significance considerably varies according to PPN distribution, population levels, and pathogenicity. Main body This review article highlights the biology, ecology, and economic value of the PPN control viewpoint. The integration of biological control agents (BCAs), as sound and safe potato production practice, with other phytosanitary measures to manage PPNs is presented for sustainable agriculture. A few cases of BCA integration with such other options as synergistic/additive PPN management measures to upgrade crop yields are reviewed. Yet, various attributes of BCAs should better be grasped so that they can fit in at the emerging and/or existing integrated management strategies of potato pests. Conclusion A few inexpensive biocontrol products, for PPNs control on potato, versus their corresponding costly chemical nematicides are gathered and listed for consideration. Hence, raising awareness of farmers for making these biologicals familiar and easy to use will promote their wider application while offering safe and increased potato yield.

scholarly journals Production and water yield of cauliflower under irrigation depths and nitrogen doses

2019 ◽  
Vol 23 (8) ◽  
pp. 561-565
Author(s):  
Reginaldo M. de Oliveira ◽  
Rubens A. de Oliveira ◽  
Sanzio M. Vidigal ◽  
Ednaldo M. de Oliveira ◽  
Lorença B. Guimarães ◽  
...  
Keyword(s):  
Water Depth ◽  
Irrigation Water ◽  
Water Yield ◽  
Crop Evapotranspiration ◽  
Fresh Weight ◽  
Randomized Design ◽  
Mean Diameter ◽  
Irrigation Depth ◽  
Completely Randomized Design ◽  
Water Depths

ABSTRACT Cauliflower is a brassica produced and consumed in Brazil, whose cultivation depends on the adequate supply of water and nutrients. The objective of this study was to evaluate the effect of irrigation depths and nitrogen doses on the production components and water yield of cauliflower hybrid Barcelona CMS. The treatments consisted of five irrigation water depths (0, 75, 100, 125 and 150% of the crop evapotranspiration) combined with five nitrogen doses (0, 75, 150, 300 and 450 kg ha-1). The experiment was conducted in a completely randomized design with a split-plot arrangement. The effects of these factors were evaluated using the response surface methodology. The water yield of the crop decreases with increasing irrigation water depth; therefore, the yield is higher when water replenishment is lower than the recommended. The highest estimated total inflorescence yield is 24,547.80 kg ha-1, with a inflorescence mean diameter of 19.60 cm, a inflorescence mean height of 12.25 cm, and an inflorescence fresh weight of 858.90 g plant-1, obtained with an irrigation water depth equivalent to 132.09% of the crop evapotranspiration (ETc) and a nitrogen dose of 450 kg ha-1. The highest inflorescence diameter and height are obtained with an irrigation depth equivalent to 128.70 and 108.20% of ETc, respectively, and a nitrogen dose of 450 kg ha-1. Therefore, the best productivity response of the Barcelona CMS cauliflower hybrid can be obtained using an irrigation depth greater than the crop evapotranspiration, regardless of the nitrogen doses.

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