نتایج جستجو برای: first irrigation

تعداد نتایج: 1478745  

Journal: :Journal of environmental management 2012
Fernando Visconti José Miguel de Paz María José Molina Juan Sánchez

SALTIRSOIL (SALTs in IRrigated SOILs) is a model for the medium to long term simulation of soil salinity in irrigated, well-drained lands. Once the algorithms were verified, the objective of our study was to validate SALTIRSOIL under one of several water quality and management scenarios in Mediterranean agriculture. Because drip and surface are the most common irrigation systems in irrigated ag...

2015
N. R. Modala S. Ale N. Rajan C. L. Munster P. B. DeLaune K. R. Thorp S. S. Nair E. M. Barnes

Cotton is one of the major crops cultivated in the Texas Rolling Plains region, and it is a major contributor to the regional economy. Cotton cultivation in this region is facing severe challenges due to an increase in the frequency of droughts and a projected decrease in rainfall in the future. Development and evaluation of deficit irrigation strategies for this region could potentially conser...

2009
E. Bautista M. Niblack

WinSRFR is an integrated software package for analyzing surface irrigation systems. Software functionalities and technical features are described in a companion article. This article documents an example application. The analyzed field is a graded basin (close-ended border) irrigation system. The event analysis tools of WinSRFR are used first to evaluate performance of the irrigation system and...

2009
P. E. T. TURNER

A trickle irrigation experiment on sugarcane was established in October 1985 on the SASA Experiment Station farm at Shakaskraal. The objectives were to establish suitable operating procedures, to measure cane yield potential, and to study the effects of factors such as fertigation and crop row spacingon yieldsoftrickle irrigated sugarcane. The results ofthe plant and first ratoon crops of this ...

Journal: :علوم باغبانی 0
مریم حقیقی مریم مظفریان

decreasing irrigation via partial root zoon drying (prd) save water and decreased production expenses. for comparing common irrigation and prd on tomato cv. falcato an experiment was designed in massey university of new zealand. treatments were control (irrigation in a field capacity in each irrigation to whole root zoon) and prd (irrigation in a half of field capacity in each irrigation to one...

Journal: :بوم شناسی کشاورزی 0
علی قنبری زهره قویدل رضا قربانی قدریه محمودی

in order to study the different levels of irrigation on diversity, density and compound of weed species in corn field, experiment was conducted at agricultural research station, ferdowsi university of mashhad during growing season of 2008-2009. the experiment was with four levels of irrigation (6130, 7290, 8800 and 12330 m3) and four levels of weed control (complete control, broad-leaves contro...

2001
P. N. Rodrigues

To cope with droughts and water scarcity in semi-arid to sub-humid climates require the development of preparedness measures. For irrigated agriculture these include the identification of irrigation scheduling strategies that minimize the water demand with acceptable impacts on yields Those strategies may be produced by simulation and focus on different levels of water demand, from average to d...

Journal: :European journal of ophthalmology 2000
A A Tahat

PURPOSE This prospective study was designed to establish whether it is more effective to treat symptomatic congenital nasolacrimal duct obstruction by probing, or high-pressure irrigation, or both. METHODS During the period February 1991 to January 1999, 228 infants (300 nasolacrimal ducts) were examined (132 males, 96 females, age range 12-13 months). These patients were divided into three g...

2004
Ganesh P. Shivakoti Ram C. Bastakoti

As an initial effort to understand the Asian irrigation systems dynamism and their robustness overtime, this paper examines two irrigation systems of Kok river system within Mekong river basin in Northern Thailand in the context of changing governance mechanisms and evolution of technological and market forces. Since the processes involved in first starting collective action are different than ...

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