Results 41 to 50 of about 240,361 (182)

Biochar and manure additions increased above‐ and belowground wood decomposition, and soil enzyme activities in a sandy loam soil

open access: yesGCB Bioenergy
While biochar and manure can provide considerable benefits to soil properties, how these amendments may alter soil microbial activity and decomposition processes remains unknown.
Ruirui Zhao   +4 more
doaj   +1 more source

Photophysiological Mechanism of Dense Planting to Increase the Grain Yield of Intercropped Maize with Nitrogen-Reduction Application in Arid Conditions

open access: yesAgronomy, 2022
Leaf photophysiological characteristics are the main indexes that determine crop yield formation. However, it remains unclear whether photosynthesis is systematically regulated via the cropping pattern and nitrogen supply when maize crops are planted ...
Hong Fan   +7 more
doaj   +1 more source

Split-plot designs for multistage experimentation [PDF]

open access: yesJournal of Applied Statistics, 2016
ABSTRACTMost of today’s complex systems and processes involve several stages through which input or the raw material has to go before the final product is obtained. Also in many cases factors at different stages interact. Therefore, a holistic approach for experimentation that considers all stages at the same time will be more efficient. However, there
Tyssedal, John Sølve, Kulahci, Murat
openaire   +2 more sources

Incomplete Data in Split-Plot, Split-Block, and Other Similar Designs [PDF]

open access: yes, 1965
15 pages, 1 article*Incomplete Data in Split-Plot, Split-Block, and Other Similar Designs* (Federer, W.
Cornell University. Biometrics Unit.   +3 more
core  

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  

Improved Split-Plot and Multistratum Designs [PDF]

open access: yesTechnometrics, 2015
Many industrial experiments involve some factors whose levels are harder to set than others. The best way to deal with these is to plan the experiment carefully as a split-plot, or more generally a multistratum, design. Several different approaches for constructing split-plot type response surface designs have been proposed in the literature since 2001,
Trinca, Luzia A., Gilmour, Steven G.
openaire   +3 more sources

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

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  

Algunas soluciones aproximadas para diseños split-plot con matrices de covarianza arbitrarias [PDF]

open access: yes, 1998
El presente trabajo revisa con cierto detalle diversos tipos de análisis para diseños split-plot que carecen del mismo número de unidades experimentales dentro de cada grupo y en los que se incumple el supuesto de esfericidad multimuestral ...
Escudero García, J. R.   +1 more
core   +3 more sources

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

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