نتایج جستجو برای: vetiver deficit irrigation

تعداد نتایج: 104420  

2013
Robert I. McDonald Evan H. Girvetz

Agricultural irrigation practices will likely be affected by climate change. In this paper, we use a statistical model relating observed water use by U.S. producers to the moisture deficit, and then use this statistical model to project climate changes impact on both the fraction of agricultural land irrigated and the irrigation rate (m³ ha⁻¹). Data on water withdrawals for US states (1985-2005...

2014
Maryam Pazoki Mohammad Ali Abdoli Abdolreza Karbassi Naser Mehrdadi Kamyar Yaghmaeian

The treatment of municipal landfill's leachate is considered as one of the most significant environmental issues. In this study a laboratory experiment was conducted through land treatment, achieving an efficient and economical method by using Vetiver plant. Moreover, the effects of land treatment of leachate of municipal landfills on the natural reduction of organic and inorganic contaminants ...

2017
Derrel L. Martin Darrell G. Watts James R. Gilley

A simulation model was developed to estimate the effect of deficit irrigation upon crop yield. The model was designed to provide relative yield estimates for numerous combinations of irrigation system, crop growth and irrigation management parameters. A daily soil moisture balance was used to predict evaporation and transpiration from which crop yields were estimated. Gross irrigation water req...

Journal: :iran agricultural research 2015
m. m. moghimi a. r. sepaskhah

abstract- efficient use of irrigation water for summer crops should be considered seriously due to rare occurrence of precipitation in summer. this research was focused on the assessment of water use efficiency for dominant crops of summer cropping pattern in the study area (i.e., maize and rice) via considering water productivity (wp) with different water management scenarios at farm level at ...

In order to study the effect of physiological and biochemical responses of tomato cv. Rio Grande to foliar spray of Megafol under water deficit stress, an experiment was carried out in a split plot based on randomized complete block design with three replicates in Research Filed of university of Zanjan as during 2015. Treatments consisted arrangement of three irrigation levels (starting irrigat...

Moharramnejad, Sajjad,

Water deficit is one of the most important environment tensions that reduce plant growth. The present experiment was conducted based on split plots based on complete randomized blocks design with three replications during 2019 cropping year at Moghan Agricultural Research Station. Two levels of irrigations as regular irrigation and irrigation cut in the seedling stage (irrigation cut applied du...

Recently, the use of biological compounds to ameliorate the effects of environmental stresses on agricultural products has been considered globally. In order to investigate the ameliorating effect of some biological compounds on fluorescence indices, photosynthetic pigments and yield of greenhouse tomatoes under deficit irrigation conditions, the split plot experiment was conducted as a randomi...

In order to evaluate the effect of water deficit stress on yield and physiological characteristics of some Iranian melon accessions, an experiment was carried out in a split plot based on randomized complete block design with three replicates in research filed of university of Zanjan during 2015. Treatments consisted arrangement of three irrigation levels (100, 70 and 40% ETc) and 7 Iranian mel...

Journal: :journal of agricultural science and technology 2016
o. mohawesh

the objective of this research was to investigate the effects of deficit irrigation on physiological and agronomic terms of eggplant to maximize the water use efficiency (wue) without affecting the final yield and fruit quality parameters under arid environment. therefore, two field experiments were conducted at two different sites: ghor al-safi, jordan valley and sail al-karak, karak valley, ka...

Drought stress is considered as the most important limiting factor for growing of crops such as maize. Under low irrigation conditions, proper nutrition of plants can improve the effects of drought stress. This experiment was carried out in order to investigate the effect of nutrition management along with application of zeolite on agronomic traits of two hybrids of maize under deficit irrigati...

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