An exploratory method to determine the plant characteristics affecting the final yield of Echium amoenum Fisch. & C.A. Mey. under fertilizers application and plant densities

Abstract

Employing of advanced statistical methods to quantify agricultural information has helped to carry out targeted planning to alleviate the problems of farmers, researchers and policy section. One of these exploratory methods, is multivariate statistical analysis that examines and models the relationship between variables. Considering the importance of Echium amoenum and its use growing trend in traditional medicine and the pharmaceutical industry, also the lack of information on the correlations between its yield and morpho physiological traits, the objective of this study was to determine the causality path in which the Echium amoenum characteristics affects the yield of Echium amoenum as regards of application of organic and chemical fertilizers under different plant densities. The employed method revealed that organic fertilizers increased flower yield compared with the control. The flower yield as a result of application of compost, vermicompost and cattle manure were increased by 25, 28, and 27% compared with the control, respectively. The results of multiple regression showed that variables of plant height, shoot dry weight, flower number per plant were the main factors affected the flower yield. The relative contribution of shoot dry weight was 16 and 25% more than plant height and flower number per plant, respectively. Causality analysis identified that shoot dry weight per plant had indirect effect on flower yield in different paths, as mainly was imposed through plant height considering the path coefficients. This study suggests that optimum production of Echium amoenum with application of ecological inputs along with effective agronomical managements of the causal paths of flower yield forming, including increase in shoot yield and plant height could be achieved through an ecological cropping system with reduced costs and no health concerning due to agrochemicals residual.

Evaluation of collection specimens of guar (Cyamopsis tetragonoloba L.) by economically valuable traits

“…According to two-year observations by R. Vozhegova et al (2022a) on the growth and development of plants, it was found that in the Southern Steppe of Ukraine, where the frost-free period is 180-200 days and the growing season is 225-230 days, they can mature and form high productivity. The findings of the current study are in line with the results of G. Jaramillo et al (2019), M. Amiri et al (2022), who argue that the weather conditions of the year should favour the ripening of guar with a growing season longer than 160 days. However, there is some difference in this regard.…”

Density Management Is More Cost Effective than Fertilization for Chimonobambusa pachystachys Bamboo-Shoot Yield and Economic Benefits

“…Numerous studies have shown that crop yields increase with increased fertilization [19,36,37]. Our results likewise showed that bamboo-shoot yield increased with increasing fertilizer application (Figure 1), which was due to the increases in soil nutrients (Olsen P, AN, SOM, and AK) contents via applying NPK inorganic compound fertilizers (Tables A1 and A2).…”

Efficiency of Fertilizing Maize Plants Through the Application of Slow Release NPK Tablet Fertilizer with Biofertilizer

“…To effectively select multi-parameter methods, multivariate analysis is recommended as a powerful tool to simplify relationships between variables [35]. This approach is instrumental in evaluating multiple characteristics simultaneously [36].…”