نتایج جستجو برای: crop requirements

تعداد نتایج: 269735  

2006
Greg Thurman

Many regions around the world are currently facing water shortages which inhibit development and economic growth. Although some of the allocation problems faced by these regions can be partially alleviated by improving agricultural irrigation efficiencies, another means for substantial water savings involves the reuse of municipal and industrial discharges to offset freshwater demands. In many ...

2007

Over the next 50 years, considerable stress will be placed on worldwide crop production by a combination of factors, including an increased human population, an increase in the crops used per person, and a number of environmental issues. Given current trends, it will be necessary to approximately double yields worldwide during this time period, and meeting this challenge will require a consider...

2016
Cedric Habiyaremye Janet B. Matanguihan Jade D’Alpoim Guedes Girish M. Ganjyal Michael R. Whiteman Kimberlee K. Kidwell Kevin M. Murphy

Proso millet (Panicum miliaceum L.) is a warm season grass with a growing season of 60-100 days. It is a highly nutritious cereal grain used for human consumption, bird seed, and/or ethanol production. Unique characteristics, such as drought and heat tolerance, make proso millet a promising alternative cash crop for the Pacific Northwest (PNW) region of the United States. Development of proso m...

2005
A. T. M. A. Choudhury I. R. Kennedy

Nitrogen (N) requirements of rice crop are met from both the soil and fertilizers. Because of acute N deficiency in most rice soils, fertilizer N must be applied to meet the crop demand. N fertilizer applied to rice crops is partially lost through different mechanisms, including ammonia volatilization, denitrification, and leaching. These losses may cause environmental problems such as pollutin...

2007

Over the next 50 years, considerable stress will be placed on worldwide crop production by a combination of factors, including an increased human population, an increase in the crops used per person, and a number of environmental issues. Given current trends, it will be necessary to approximately double yields worldwide during this time period, and meeting this challenge will require a consider...

A.M. Stellacci F. Wassar M. Todorovic M.H. Sellami, R. Albrizio S.S. Yamaç V. Cantore

Potato grown for early or off-season production plays a crucial role in the economy of several areas in the Mediterranean countries. Irrigation is important for determining yield and earliness, thus a better investigation of plant response under various pedo-climatic conditions can help to improve resource use efficiency and farmer income. A two-year field research (2009-2010) was carried o...

Ali Neshat Atefeh Afshar,

The agricultural regions are running into difficulties, which are restrictive availability of water, successive appearing draughts, and overuse of ground water resources for supplemental water requirements. As a sample which is got from the farm is sent to the laboratory for testing and the laboratory works need devices. Hence, conducting farm experiments are expensive and time consuming to opt...

Tomato (Lycopersicon esculentum) is an important member of the Solanaceae family. It is mainly used as food and cash crop globally. Tomato also serves as an ornamental plant in some parts of the world. In urban areas, this crop is included in the foodscaping systems where it is grown in hanging baskets, growing pots and aquaponics for aesthetic and food purposes. Tomato production is m...

2012
Pascalle C. Smith Jürg Fuhrer

This paper presents a simple approach for estimating the spatial and temporal variability of seasonal net irrigation water requirement (IWR) at the catchment scale, based on gridded land use, soil and daily weather data at 500 × 500 m resolution. In this approach, IWR is expressed as a bounded, linear function of the atmospheric water budget, whereby the latter is defined as the difference betw...

Journal: :Bioresource technology 2010
K C Stone P G Hunt K B Cantrell K S Ro

Biofuels are a major topic of global interest and technology development. Whereas bioenergy crop production is highly dependent on water, bioenergy development requires effective allocation and management of water. The objectives of this investigation were to assess the bioenergy production relative to the impacts on water resource related factors: (1) climate and weather impact on water suppli...

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