نتایج جستجو برای: irrigated cropping

تعداد نتایج: 18623  

Journal: :Global change biology 2017
Virginia L Jin Marty R Schmer Catherine E Stewart Aaron J Sindelar Gary E Varvel Brian J Wienhold

Over the last 50 years, the most increase in cultivated land area globally has been due to a doubling of irrigated land. Long-term agronomic management impacts on soil organic carbon (SOC) stocks, soil greenhouse gas (GHG) emissions, and global warming potential (GWP) in irrigated systems, however, remain relatively unknown. Here, residue and tillage management effects were quantified by measur...

2013
Krishna Gopal Mandal Dilip Kumar Kundu Ravender Singh Ashwani Kumar Rajalaxmi Rout Jyotiprakash Padhi Pradipta Majhi Dillip Kumar Sahoo

Effects of cropping practices on soil properties viz. particle size distribution, pH, bulk density (BD), field capacity (FC, -33 kPa), permanent wilting point (PWP, -1500 kPa), available water capacity (AWC) and soil organic carbon (SOC) were assessed. The pedotransfer functions (PTFs) were developed for saturated hydraulic conductivity (Ks), water retention at FC and PWP of soils for different...

Journal: :Water science and technology : a journal of the International Association on Water Pollution Research 2006
M D Ahmad T Biggs H Turral C A Scott

Evapotranspiration (ET) from irrigated land is one of the most useful indicators to explain whether the water is used as "intended". In this study, the Surface Energy Balance Algorithm for Land (SEBAL) was used to compute actual ET from a Landsat7 image of December 29, 2000 for diverse land use in the Krishna Basin in India. SEBAL ETa varies between 0 to 4.7 mm per day over the image and was qu...

2006
Divya Nair Sreelatha Nair Jody Smiley Christi Liskey Ben Dickerson Amal Chandran

For intensive production systems like the Blue Ridge Aquaculture (BRA), based in Martinsville, VA, there are significant economic incentives to reuse the waste by diverting it into a cropping system that would increase the total productivity and total resource-reuse efficiency, and decrease the environmental, ecological, and financial costs of aquacultural waste disposal. In order to facilitate...

Journal: :Pharma innovation 2023

Climate change adversely affected agriculture production and become more serious concern for developing country like India water is one of the precious costly input used in hence an experiment was conducted at Agriculture Research Station, Achalpur under Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, situated 21° 18’ North latitude 77° 30’ to 35’ East longitudes with a subtropical climate. Th...

Journal: :ISPRS Int. J. Geo-Information 2014
Yudi Setiawan Ernan Rustiadi Kunihiko Yoshino Liyantono Hefni Effendi

Accurate information of paddy fields over wide areas is essential to support sustainable agricultural and a food security program. Monitoring of these lands continuously, using remote sensing technology, will provide information related to the cropping intensity in the field, as well as its dynamics change. We characterized seasonal vegetation dynamics from long-term multi-temporal MODIS satell...

Journal: :Remote Sensing 2012
Jana Edlinger Christopher Conrad John P. A. Lamers Gulchekhra Khasankhanova Thomas Koellner

The expansion of irrigated agriculture during the Soviet Union (SU) era made Central Asia a leading cotton production region in the world. However, the successor states of the SU in Central Asia face on-going environmental damages and soil degradation that are endangering the sustainability of agricultural production. With Landsat MSS and TM data from 1972/73, 1977, 1987, 1998, and 2000 the exp...

Journal: :crop breeding journal 2011
a. moghaddam g. pietsch m. r. ardakani a. raza j. vollmann

alfalfa is the best known fodder crop with high ability of biological nitrogen fixation and drought tolerance in dry, pannonian region of east austria. different morphological and physiological characteristics of 18 alfalfa genotypes from different geographical origins, 8 iranian ecotypes and 10 european cultivars were evaluated under irrigated and rainfed conditions during 2006-08 cropping sea...

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