نتایج جستجو برای: crop growth rate

تعداد نتایج: 1740372  

2015
Sarah V. Hatzig Matthias Frisch Frank Breuer Nathalie Nesi Sylvie Ducournau Marie-Helene Wagner Gunhild Leckband Amine Abbadi Rod J. Snowdon

Rapid and uniform seed germination is a crucial prerequisite for crop establishment and high yield levels in crop production. A disclosure of genetic factors contributing to adequate seed vigor would help to further increase yield potential and stability. Here we carried out a genome-wide association study in order to define genomic regions influencing seed germination and early seedling growth...

Journal: :Journal of Cereal Research 2022

A field experiment was carried out in the year 2014 and 2015 at experimental of Banaras Hindu University, Varanasi, Uttar Pradesh to evaluate effect agronomic weed management practices on crop growth rate (CGR) relative (RGR) direct seeded rice. Twenty-four treatment combinations consisting two mulching viz. no mulch live (brown manuring with Sesbania) nitrogen levels (120 kg ha-1, 150 ha-1&nbs...

Journal: :International Journal of Enviornment and Climate Change 2022

Information about agricultural trends can help policymakers identify strategies that will result in a sustained rise food output. The present investigation has been undertaken to study the Growth, Trend and Instability Area, Production Productivity of Wheat Crop Chhattisgarh Plains. Time series data for wheat were collected period (1990-91 2014-15). linear, quadratic exponential functions are f...

A.A. Kamgar-Haghighi A.R. Sepaskhah, M. Amini-Nejad

Better irrigation management and more efficient management of crop production require modeling of plant growth and crop yield. More applicable models are usually simple and requires less and accessible inputs. The objective of this study was to develop a model for growth and yield prediction of saffron under various irrigation regimes. In this modeling soil water budget and other simple rel...

2017
Srinath Tamirisa Dashavantha R. Vudem Venkateswara R. Khareedu

Frequent climatic changes in conjunction with other extreme environmental factors are known to affect growth, development and productivity of diverse crop plants. Pigeonpea, a major grain legume of the semiarid tropics, endowed with an excellent deep-root system, is known as one of the important drought tolerant crop plants. Cyclin dependent kinases (CDKs) are core cell cycle regulators and pla...

2003
M. Heinen

In this study, water and nutrient uptake from the substrate and responses of the crop to fertigation strategies were analysed. In an experiment and simulation study, the amount and frequency of fertigation and electrical conductivity (EC) of the fertigation water were changed for a tomato crop grown on rockwool. In a climate chamber, tomato plants were grown on rockwool while five different EC ...

Journal: :پژوهش های زراعی ایران 0
مهدی پارسا علی گنجعلی الیاس رضائیان زاده احمد نظامی

in order to investigate the effects of different irrigation regimes on yield and growth indices of three chickpea cultivars, an experiment was conducted during the 2007 growing season at mashhad (iran). six irrigation regimes including i1; full irrigation, i2; irrigation at branching, i3; irrigation at flowering, i4; irrigation at pod formation, i5; irrigation at seed filling stage and i6; dry ...

2012
M Vijay Shankar C. S. P. Ojha K. S. Hari Prasad

Maize and Indian mustard are significant crops in semi-arid climate zones of India. Improved water management requires precise scheduling of irrigation, which in turn requires an accurate computation of daily crop evapotranspiration (ETc). Daily crop evapotranspiration comes as a product of reference evapotranspiration (ET0) and the growth stage specific crop coefficients modified for daily var...

Journal: :تولید محصولات زراعی و باغی 0
پوراندخت گلکار p. golkar isfahan university of technology, isfahan, iran.دانشگاه صنعتی اصفهان لیلا کشاورز l. keshavarz shahid bahonar university of kerman, kerman, iran.دانشگاه شهید باهنر کرمان مهری صفاری m. saffari shahid bahonar university of kerman, kerman, iran.دانشگاه شهید باهنر کرمان

this experiment was conducted to evaluate the effects of salt stress on some agro-physiological traits in ten varieties of bread (triticum aestivum l.) and durum (triticum turgidum l.) wheats in seedling stage. a greenhouse experiment was carried out as a split plot experiment based on a completely randomized design with four replications in hydroponic condition. different agronomic and physiol...

Journal: :caspian journal of mathematical sciences 2014
m. h. rahmani doust s. gholizade

one may find out the application‎ ‎of mathematics in the areas of ecology‎, ‎biology‎, ‎environmental‎ ‎sciences etc‎. ‎mathematics is particulary used in the problem of‎ ‎predator-prey known as lotka-volterra predator-prey equations.‎ ‎indeed‎, ‎differential equations is employed very much in many areas‎ ‎of other sciences‎. ‎however‎, ‎most of natural problems involve some‎ ‎unknown functions...

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