نتایج جستجو برای: cropping patterns

تعداد نتایج: 419929  

Journal: :JCS 2017
Tb. Ai Munandar Sumiati

Corresponding Author: Tb Ai Munandar Department of Informatics Engineering, Faculty of Information Technology, Universitas Serang Raya, Banten, Indonesia Email: [email protected], [email protected] Abstract: Nowadays, agricultural field is experiencing problems related to climate change that result in the changing patterns in cropping season, especially for paddy and coarse grains, pulses...

Journal: :اقتصاد و توسعه کشاورزی 0
باریکانی باریکانی احمدیان احمدیان خلیلیان خلیلیان

abstract surface water restriction and supply variation of these resources causes of over extraction of groundwater and unbalance between feed and extraction of groundwater in iran. agricultural sector as the biggest consumer of water resources has the most share of this unsustainability. this paper studies the conjunctive use of surface and groundwater in agronomy production in qazvin basin, o...

Journal: :پژوهش های زراعی ایران 0
احسان عیشی رضایی پرویز رضوانی مقدم حمید رضا خزاعی علی اصغر محمد آبادی

intercropping is one of the most important approaches for sustainable agricultural production. in order to evaluate the effect of planting patterns and millet density on forage yield of millet and soybean, an experiment was conducted in the research farm of faculty of agriculture, ferdowsi university of mashhad during the 2007-2008 growing season. the experiment was performed as factorial based...

ژورنال: علوم آب و خاک 2008
سلطانی, غلامرضا , صبوحی, محمود ,

The objective of this study is to introduce an approach for determination of comparative advantage of Basins in the production of crops, enhancing water use efficiency and directing cropping patterns to maximize net virtual water import. A model was constructed and applied assuming five different risks in available water and three levels of irrigation efficiencies (35, 45, and 65). The findings...

سلطانی, غلامرضا , صبوحی, محمود ,

The objective of this study is to introduce an approach for determination of comparative advantage of Basins in the production of crops, enhancing water use efficiency and directing cropping patterns to maximize net virtual water import. A model was constructed and applied assuming five different risks in available water and three levels of irrigation efficiencies (35, 45, and 65). The findings...

Journal: :اقتصاد و توسعه کشاورزی 0
صمد عرفانی فر منصور زیبایی مهدی کسرایی

in this study, the optimal cropping patterns based on individual aims are presented and followed by a multi-objective cropping pattern with emphasize on the use of conservation tillage methods in darab region presented. individual goals consisted of maximizing gross margin and food secin this study, the optimal cropping patterns based on individual aims were presented and followed by using a mu...

2003
Robert Scealy Reihaneh Safavi-Naini Nicholas Paul Sheppard

Segmented watermarking is an approach to multiple watermarking that can be used to acknowledge the contribution of multiple authors or to embed a fingerprint code-word, but is susceptible to cropping attacks that discard portions of the watermarked media. Careful selection of the watermark embedding pattern can increase the resilence of a segmented watermark in the presence of cropping attacks....

2013
M. K. ALAM N. SALAHIN

A series of field experiments was conducted at BARI central farm to observe the changes in soil densities, moisture retentive properties, and crop productivity as influenced by different tillage depths and cropping patterns. The tillage depth showed significant effect on wheat yield. Grain yield of wheat significantly increased from 2.86 t/ha (minimum tillage depth) to 5.33 t/ha (tillage depth ...

2010
Gillian L. Galford Jerry Melillo John F. Mustard Carlos E. P. Cerri Carlos C. Cerri

The Brazilian Amazon is one of the most rapidly developing agricultural frontiers in the world. The authors assess changes in cropland area and the intensification of cropping in the Brazilian agricultural frontier state of Mato Grosso using remote sensing and develop a greenhouse gas emissions budget. The most common type of intensification in this region is a shift from singleto doublecroppin...

2015
C. S. Murthy M. V.R. Sesha Sai M. Naresh Kumar P. S. Roy

Time series data on cropping pattern at disaggregated level were analysed and its implications on geospatial drought assessment were demonstrated. An index of Cropping Pattern Dissimilarity (CP-DI) between a pair of years, developed in this study, proved that the cropping pattern of a year has a higher degree of similarity with that of recent past years only and tends to be dissimilar with long...

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