Results 41 to 50 of about 958,993 (198)

Soil Carbon Characteristics of a Fluvisol Affected by Aggregates from Two Tillage and Crop Regimes

open access: yesJournal of Applied Sciences and Environmental Management, 2013
We investigated soil carbon characteristics of a Fluvisol as influenced by different ped sizes and crop types for a period of 10 years in Owerri, Southeastern Nigeria. The experimental design was a split-split plot arranged in a randomized complete block
Emmanuel Onweremadu   +2 more
doaj   +2 more sources

Five Hands-on Experiments for a Design of Experiments Course

open access: yesJournal of Statistics and Data Science Education, 2023
In many collegiate level statistics courses, the focus of the learning outcomes is often on the analysis of data after it has been collected. Students are provided with clean data sets from previous studies to practice statistical analysis, but receive ...
Victoria Woodard
doaj   +1 more source

Structural phase transitions and their influence on Cu+ mobility in superionic ferroelastic Cu6PS5I single crystals

open access: yes, 2005
The structural origin of Cu+ ions conductivity in Cu6PS5I single crystals is described in terms of structural phase transitions studied by X-ray diffraction, polarizing microscope and calorimetric measurements.
A Gagor   +10 more
core   +1 more source

Reducing the number of experiments in split-plot optimization designs

open access: yesJournal of the Brazilian Chemical Society, 2004
Two experiment reduction procedures for split-plot designs are investigated using a data set containing 160 experiments, consisting of 80 duplicate results for the optimization of a water-acetone-N,N-dimethylformamide mixture with HCl, o-dianisidine and ...
Bortoloti João A.   +2 more
doaj  

Brachiaria physiological parameters in agroforestry systems

open access: yesCiência Rural
: This study aimed to assess the effects of Eucalyptus and maize shading on characteristics related to water use by Brachiaria in agroforestry systems.
Márcia Vitória Santos   +6 more
doaj   +1 more source

Yield response and economic implications of soybean (Glycine max (L.). Merrill) – lowland-upland rice sequential cropping in the rainforest/savanna transitory ecosystem

open access: yesActa Agriculturae Slovenica, 2017
A sequential cropping system of soybean-lowland (NERICA L-42)-upland (NERICA 2) rice was established at Abeokuta and Ibadan (Nigeria) to evaluate the performance of the cropping system.
Paul Abayomi Sobowale SOREMI   +6 more
doaj   +1 more source

Effect of planting methods on quantity and quality of sugar beet in saline regions

open access: yesMajallah-i Chughundar-i Qand, 2014
Water and soil salinity in some regions of Isfahan, East Azerbaijan, and West Azerbaijan provinces and also other parts of Iran are the main hindrance for crop planting.
M.R. Jahadakbar   +3 more
doaj   +1 more source

ANALISIS KOVARIANSI PADA RANCANGAN PETAK TERPISAH (SPLIT PLOT DESIGN) [PDF]

open access: yes, 2010
Analisis kovariansi adalah suatu teknik analisis statistika yang mengkombinasikan antara analisis variansi dengan analisis regresi yang dapat digunakan untuk perbaikan ketelitian pada suatu percobaan.
Hernowo, Fajar Budi
core  

Pengaruh Frekuensi dan Periode Pemberian Pakan Terhadap Produksi Karkas Ayam Buras Super

open access: yesJurnal Peternakan Indonesia, 2017
Penelitian ini bertujuan untuk mengetahui produksi karkas ayam buras super yang optimal dengan manajemen pemberian pakan yang berbeda. Materi yang digunakan adalah 252 ekor anak ayam buras super unsex umur 1 hari dengan bobot badan awal rata-rata 37,88 ±
I. Darmawan   +2 more
doaj   +1 more source

EFFECT OF NITROGEN FERTILIZER AND SUPPLEMENTARY IRRIGATION ON YIELD AND QUALITY OF SOME LOCAL BREAD WHEAT VARIETIES [PDF]

open access: yesMesopotamia Journal of Agriculture, 2006
Wheat production under climate of northern Iraq depends mainly on annual rain quantity and its distribution. Generally the annual rate is low and poorly distributed ,as a result the yield is low and unstable.
Mohammed A. Al-Noori
doaj   +1 more source

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