Efficacy and Persistence of Steinernema carpocapsae (Rhabditida: Steinemematidae) Applied through a Center-Pivot Irrigation System Against Larval Com Rootworms (Coleoptera: Chrysomelidae)

1993 ◽  
Vol 86 (5) ◽  
pp. 1348-1354 ◽  
Author(s):  
R. J. Wright ◽  
J. F. Witkowski ◽  
G. Echtenkamp ◽  
R. Georgis
Keyword(s):  
Irrigation System ◽  
Steinernema Carpocapsae ◽  
Center Pivot

Analytical Head Loss Equation of Center-Pivot Irrigation System

2021 ◽  
Vol 147 (7) ◽  
Author(s):  
Amin Seyedzadeh ◽  
Amir Panahi ◽  
Eisa Maroufpoor ◽  
Abdolmajid Liaghat
Keyword(s):  
Irrigation System ◽  
Head Loss ◽  
Center Pivot

scholarly journals IRRIGAÇÃO DE PASTAGENS VIA PIVÔ CENTRAL, NA BOVINOCULTURA DE CORTE.

Irriga ◽  
2009 ◽  
Vol 14 (4) ◽  
pp. 492-503 ◽  
Author(s):  
Leonardo Pretto de Azevedo ◽  
João Carlos Cury Saad
Keyword(s):  
Solar Radiation ◽  
Dry Matter ◽  
Irrigation System ◽  
Economic Feasibility ◽  
Forage Production ◽  
Advantages And Disadvantages ◽  
Forage Plants ◽  
Matter Production ◽  
Tropical Forage ◽  
Center Pivot

Irrigação de pastagens via pivô central, na bovinocultura de corte.  Leonardo Pretto de Azevedo1; João Carlos Cury Saad21 Instituto Federal de São Roque, São Roque, SP, [email protected] de Engenharia Rural, Faculdade de Ciências Agronômicas, Universidade Estadual Paulista, Botucatu, SP,   1 RESUMO          O presente trabalho teve como objetivo apresentar o sistema de irrigação de pastagens via pivô central na bovinocultura de corte brasileira, bem como discutir a viabilidade econômica desta prática em diferentes regiões do país. Foram apresentados fatores importantes na produção de massa seca de forrageiras tropicais, como temperatura, radiação solar, adubação e água. Também foram apresentadas as vantagens e desvantagens do sistema, bem como uma breve discussão de sua viabilidade econômica. Concluiu-se que a irrigação de pastagens pode ser uma técnica economicamente viável para regiões específicas do Brasil, considerando-se os fatores envolvidos e esclarecendo que apenas o fornecimento de água às culturas não resolve o problema da estacionalidade durante o inverno. UNITERMOS: pivô central, forrageiras, viabilidade econômica  AZEVEDO, L. P.; SAAD, J. C. C. Pasture irrigation under center pivot for beef cattle.  2 ABSTRACT          The aims of this work were to show the pasture irrigation system by center pivot with Brazilian cattle and to discuss the economic feasibility of this technique in different regions of the country. Important parameters to dry matter production of tropical forage plants, as temperature, solar radiation, fertilization, and water requirement were shown Also, the system advantages and disadvantages and a discussion about economic feasibility of this technique were presented. It was concluded that pasture irrigation is a feasible and economical technique to some specific Brazilian regions, depending on appropriated parameters. This work also concludes that just water supply is not enough to assure forage production avoiding reduction in dry production in the winter. KEYWORDS: center pivot, pasture, economic feasibility

scholarly journals Simulation of the Occurrence of Water Runoff in Soils Under Cultivation of Industrial Tomato Irrigated by Center Pivot

2019 ◽  
Vol 11 (7) ◽  
pp. 48
Author(s):  
Diogo. H. M. Moraes ◽  
José Alves Júnior ◽  
Marcio Mesquita ◽  
Adão. W. P. Evangelista ◽  
Derblai Casaroli ◽  
...  
Keyword(s):  
Surface Runoff ◽  
Irrigation System ◽  
Numerical Technique ◽  
Irrigation Management ◽  
Water Runoff ◽  
Clayey Soils ◽  
Infiltration Capacity ◽  
Tomato Crop ◽  
Center Pivot ◽  
Different Types

The tomato crop is almost totally irrigated. Among the irrigation methods utilized, mechanized sprinkling by center pivot stands out in tomato cultivation. A cultural treatment used in the tomato is the synchronization of the irrigations with the applications of the pesticides since with the leaf wetting the plants become unprotected and susceptible to diseases. In an attempt to reduce pesticide applications, growers seek to increase the time between irrigations, however, there are limitations, inherent to the soil and the irrigation system itself. The objective of this work was to simulate the soil water runoff tendency for irrigation management in the tomato crop, simulating three different types of soils (sandy, medium and clayey), three declines (0, 5 and 10%), and two types of deflectors (I-Wob and Spray). For this, four pivot sizes (25, 50, 75 and 100 ha) were defined and the methodology of maximum allowable precipitation estimated by the Newton-Raphson numerical technique was used to verify the different runoff conditions. The results showed that clayey soils are more susceptible when compared to medium and sandy soils, to surface runoff. Pivots of 100, 75 and 50 ha present greater susceptibility to runoff, with 25 ha being the best suitability for infiltration capacity in both soils. There is a percentage reduction of the maximum allowable rainfall of 40.74 % (±1.54) when the terrain is plan and pass to have 5% inclination and 22.99% (±1.47) between 5 and 10 %. I-Wob type deflectors have a better distribution of application, a consequently better relation with the maximum allowable precipitation intensity and less possibility of the surface runoff.

A Renewable Solution Approach for Center Pivot Irrigation System

2018 ◽  
Author(s):  
Vishwajit Roy ◽  
Subrina Sultana Noureen ◽  
Stephen Bayne ◽  
Argenis Bilbao ◽  
Michael Giesselmann
Keyword(s):  
Irrigation System ◽  
Solution Approach ◽  
Center Pivot

EVALUATING A CONTAMINANT USING A CENTER PIVOT IRRIGATION SYSTEM

1999 ◽  
Vol 42 (3) ◽  
pp. 799-802
Author(s):  
B. W. Maw ◽  
J. R. Young ◽  
L. R. Marti
Keyword(s):  
Irrigation System ◽  
Center Pivot
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