the purpose of this study is calculate the rate of total factor productivity (tfp) growth  of rice varieties for different provinces of  iran and then breakdown it to the changes in a technology, management efficiency and scale efficiency. for this purpose we use the nonparametric method of comprehensive data analysis and malmquist productivity index. the used data include the rice varieties pr...

for maximum impact, high yielding improved varieties with significant yield advantages must be targeted to farmers and localities that value this trait most. explaining farmers’ demand for yield can serve as a means of targeting the development and dissemination of high yielding varieties. this paper analyzes data collected from 395 farmers in northern ethiopia using a zero-limit tobit regressi...

The performance of BRRI dhan28, dhan47, dhan50 and one exotic rice variety Koshihikari (Japanese) was observed in boro season from November, 2011 to May, 2012. varieties were evaluated on growth, yield contributing characteristics rice. In the early stages growth viz. 60 DAS, 70 DAS 90 had maximum plant height. dhan47 tallest (93.20 cm) shortest (78.32 at time harvest. stage (60 DAS) tiller num...

in the first phase of this research, adaptability of winter rapeseed (brassica napus l.) varieties were investigated to select high yielding rapeseed cultivars. accordingly, two field experiments were performed in 2006-2007 and 2007-2008 cropping seasons at experimental field of agricultural and natural resources research center of markazi province, in arak, iran, in a randomized complete block...

first of all, in order to determine the high yielding rapeseed varieties, two field experiments were performed in 2006-2008 cropping seasons in agricultural and natural resources research center of markazi province, arak (34º 5´ n; 49º 42´ e, and 1775 m above sea level), iran. in this research, 15 winter rapeseed varieties were compared in a randomized complete block design with three replicati...

In sweet potato, though a number of high yielding varieties are available for cultivation, there is lack information on suitability various to different seasons. The results the study will be useful recommend ideal Field experiments were conducted during Kharif, Rabi and Summer seasons from 2021 2022 with an objective assess seasonal influence growth tuber yield five potato [High Bhu Krishna (V...

Three doses each of Gamma – rays, EMS, NG, MH and in combination were administered to the seeds of morphologically and genetically distinct blackgram varieties, PU-30 and Sarala In M2 generation most treatment populations exhibited reduction in mean and increase in variance for all six quantitative traits and among the mutagens NG and combined treatments induced more variability in both the var...

Considering the crucial focus on plant developments as high yielding, protein, and disease-resistant varieties, in this study, the genetic diversity and nutritional traits of available kidney bean germplasms found in Bangladesh have been evaluated based on seventeen quantitative and six nutritional traits. Analysis of genotypic, phenotypic variance and covariance showed that higher environmenta...