نتایج جستجو برای: rain fed

تعداد نتایج: 101824  

ژورنال: توسعه آبزی پروری 2020

This study was performed in order to survey of effect of encapsulated oil in rain bow trout dietary on some growth factors and proximate compositions. Fish in average weight, 20 ± 1.5 g, was fed daily at 2.5 percent of biomass for 2 months. Rainbow trout was weighed every 2 weeks. At the end of experiment growth factors and proximate composition were studied. The result showed that the diets wh...

2005
J. Haberle

The effect of water supply during grain growth on grain nitrogen concentration (GNC) and grain nitrogen yield (GNY) of winter wheat (Triticum aestivum L.) was studied in the field experiment on fertile loamy-clay soil in years 2004–2007. The water regime was differentiated using mobile rain shelter (water shortage, treatment S) and drip irrigation (ample water supply, treatment W); rain-fed cro...

Journal: :Nature 1987

Journal: :Remote Sensing 2014
Nguyen Thanh Son Chi-Farn Chen Cheng-Ru Chen Huynh-Ngoc Duc Ly-Yu Chang

Rice crop monitoring is an important activity for crop management. This study aimed to develop a phenology-based classification approach for the assessment of rice cropping systems in Mekong Delta, Vietnam, using Moderate Resolution Imaging Spectroradiometer (MODIS) data. The data were processed from December 2000, to December 2012, using empirical mode decomposition (EMD) in three main steps: ...

2005
Animesh Maitra Kaustav Chakravarty

Measurements of rain attenuation over an earth-space path at Kolkata (22°34' N, 88°29' E), India, have been carried out since June 2004 by receiving a Ku-band signal from the satellite NSS-6 (geostationary at 95 E). The instantaneous attenuations are estimated from the point rain rates measured with an optical raingauge and using the Simple Attenuation Model (SAM). The estimated values closely ...

2014
Yong He Lingling Hou Hong Wang Kelin Hu Brian McConkey

Soil surface texture is an important environmental factor that influences crop productivity because of its direct effect on soil water and complex interactions with other environmental factors. Using 30-year data, an agricultural system model (DSSAT-CERES-Wheat) was calibrated and validated. After validation, the modelled yield and water use (WU) of spring wheat (Triticum aestivum L.) from two ...

2013
David B. Lobell Kenneth G. Cassman Christopher B. Field

Future trajectories of food prices, food security, and cropland expansion are closely linked to future average crop yields in the major agricultural regions of the world. Because the maximum possible yields achieved in farmers’ fields might level off or even decline in many regions over the next few decades, reducing the gap between average and potential yields is critical. In most major irriga...

Journal: :Badeggi Journal of Agricultural Research and Environment 2023

Abstract
 Fonio respond differently at different sowing conditions. Field experiment was conducted to assess the of fonio grain yield and its components when subjected seeding methods under rainfed condition during growing season 2021 2022. The Randomized complete block design with three replications adopted for experiment. result revealed that planting (dibbling, drilling broadcasting tra...

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