نتایج جستجو برای: rotary tiller

تعداد نتایج: 10740  

Journal: :Annals of botany 2010
Hae Koo Kim Delphine Luquet Erik van Oosterom Michael Dingkuhn Graeme Hammer

BACKGROUND AND AIMS Genotypic variation in tillering can be caused by differences in the carbon supply-demand balance within a plant. The aim of this study was to understand and quantify the effects of genotype on tillering as a consequence of the underlying internal competition for carbohydrates. METHODS Five sorghum hybrids, derived from inbred lines with a common genetic background and wit...

2010
Simon Newman

A helicopter is not possessed of an ability to fly fast compared with fixed-wing counterparts. This is a result of considerations with the main rotor. The main rotor moves in a direction very close to its plane of rotation which naturally divides it into two halves which operate under different aerodynamic conditions. One side (called the advancing side) has the rotation and translation velocit...

Journal: :Agronomy 2023

Sugarcane yield in China is low because of the shallow A-horizon soil layer, or as it commonly called by farmers, “plow layer”, well organic matter and fertilizer utilization efficiency. Fenlong-ridging deep tillage (FT), also vertical rotary tillage, amendment with biochar have been shown to improve quality crop yield. In this study, field trials were conducted newly planted ratoon sugarcane e...

2008
J. Dalgleish R. Kula David C. Hartnett Brett K. Sandercock

Identifying the underlying mechanisms and the sources of variation in plant productivity is critical to the development of accurate predictive models of ecosystem responses to environmental change, including increased nitrogen (N) deposition and altered precipitation patterns. A great deal of variation in aboveground net primary production (ANPP) in tallgrass prairie may be accounted for by var...

Journal: :International journal of engineering technology and management sciences 2023

Reliability analysis of a power tiller involves studying the probability its performance and functionality over given period. This aims to identify factors that affect reliability determine ways improve performance. The can be evaluated using different methods such as statistical analysis, theory, simulation modelling. These enable assessment tiller's in operating conditions help critical compo...

Journal: :Agronomy Journal 2021

Adopting suitable tillage and fertilization technologies for wheat (Triticum aestivum L.) can address poor soil conditions high residual nitrogen following rice (Oryza sativa harvest to improve the sustainability of rice–wheat rotation systems. A field experiment was conducted in 2016–2018 investigate influence methods rates on seedling growth (at beginning over-wintering stage), tillering char...

Journal: :international journal of occupational hygiene 0
mohammad hossein beheshti parviz ghandhari

oroginal article tiller is a handy multi – a purpose tractor is used in agriculture. the noise emitted from tiller may be seriously affected auditory system users. the purpose of this study was to evaluate the exposure to noise in operators of this device. in this study 36cultivator tiller was examined. measurement of sound is based in iso 5131-1996 and iso 7216 standard and was conducted in in...

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