نتایج جستجو برای: crop management

تعداد نتایج: 907711  

2006
R.E.E. Jongschaap

This study investigated the scope and constraints for integrated use of mechanistic crop growth simulation models and earth observation techniques. Integration of highquality crop growth models and information derived from earth observations can contribute to improved use of resources, reduced crop production risks, reduced environmental degradation, and increased farm income. In the past, both...

2017
MATHIAS KNEUBÜHLER

From the early days of remote sensing until today, there has been a wide range of applications of remote sensing data for agricultural management. Improvements in spatial, spectral and temporal resolution of available data products together with precision agriculture have meant an increase in the availability of services and products that help to manage agricultural operation more efficiently a...

2015
By R. L. McCown G. L. Hammer J. N. G. Hargreaves D. P. Holzworth D. M. Freebairn

 APSIM(Agricultural Production Systems Simulator) is a software system which allows (a) models of crop and pasture production, residue decomposition, soil water and nutrient flow, and erosion to be readily reconfigured to simulate various production systems and (b) soil and crop management to be dynamically simulated using conditional rules.  A key innovation is change from a core concept of ...

Journal: :بوم شناسی کشاورزی 0
فاطمه خمدی موسی مسگرباشی پیمان حسیبی lمعصومه فرزانه نعیمه عنایتی ضمیر

introduction integrated nutrient management involving crop residue/green manures and chemical fertilizer is potential alternative to provide a balanced supply of nutrients, enhance soil quality and thereby sustain higher productivity. the present experiment was undertaken to evaluate the effect of different crop residue management practices and npk levels on yield components and yield of wheat....

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2012
Louis J Gross Brian Beckage

S table and secure food production is essential to civilization. Any methods that improve our understanding of crop yields have the potential to reduce human suffering and help provide the caloric needs of an expanding world population. Similar hopes apply to commodity crops such as cotton and those used to meet energy needs. Given the vast amount of agricultural research and experience, it mig...

ژورنال: علوم آب و خاک 2018

Evaluation of the ecological sustainability of different cropping systems is crucial to achieve sustainable agriculture. This evaluation is accessible via soil quality assessment. Therefore, to study the mid-term effects of different conservation tillage systems (no tillage and minimum tillage) and cover cropping on the biological indicators of soil quality, a factorial experiment in a complete...

2014
Mehmet Ali DAYIOĞLU

In this paper, a hierarchical control approach with three layers is defined to control the crop growth based on climate and economic criteria for tomato greenhouse. Integrated greenhouse management consists of energy, climate, water-fertilizer, crop quality and pest-disease management. The main purpose of a modern greenhouse is to define the information flow, to control optimum material and ene...

2014
M. A. Jabbar L. Reynolds P. A. Francis

The aim of this study was to assess the process and extent of sedentarisation among Fulani cattle owners in the derived savannah zone of south-west Nigeria. The results, based on a survey of 66 randomly-selected cattle owners, indicate an on-going process of settlement. Previously cattle owners visited the zone for dry season grazing but an increasing number were found to be settling and becomi...

Journal: :Remote Sensing 2010
Jerry L. Hatfield John H. Prueger

The paper investigates the value of using distinct vegetation indices to quantify and characterize agricultural crop characteristics at different growth stages. Research was conducted on four crops (corn, soybean, wheat, and canola) over eight years grown under different tillage practices and nitrogen management practices that varied rate and timing. Six different vegetation indices were found ...

Journal: :Trends in ecology & evolution 2013
Riccardo Bommarco David Kleijn Simon G Potts

Rising demands for agricultural products will increase pressure to further intensify crop production, while negative environmental impacts have to be minimized. Ecological intensification entails the environmentally friendly replacement of anthropogenic inputs and/or enhancement of crop productivity, by including regulating and supporting ecosystem services management in agricultural practices....

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