RÉSUMÉ
A field experiment was conducted to find out the "Effect of potassium on the growth and yield of different varieties of Mustard (Brassica juncea L.) under Poplar (Populus deltoides) based agroforestry system" at Forestry Nursery, the research farm of the College of Forestry, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj, U.P., India. Experiment was laid out in randomized block design with 3 different varieties of Mustard viz. T59-Varuna, Pioneer 45s 42s, and Jugni in 3 replications and 5 levels of Potassium per variety (50% kg/ha), (75% kg/ha), (100% kg/ha), (125% kg/ha) and (150% kg/ha) as of total 15 treatments in all. The result shows that the application of increased levels of potassium fertilizers showed high growth and yield of Mustard. It was recorded from the application of potassium fertilizers in treatments applied with (MOP @ 150% kg/ha) resulted in increased pre-harvest observation viz., plant height (cm), dry weight (g/plant), crop growth rate (g/m2/day) and increased relative growth rate (g/g/day). It was also concluded from the trail that the application of fertilizers in treatment with (MOP @ 150% kg/ha) was found in increasing post-harvest observations viz., number of siliqua/plants, number of seeds/siliquas, test weight (g), seed yield (t/ha), stover yield (t/ha), harvest index (%). Also, after the economic analysis, the returns as compared to investment were found to be more profitable.
RÉSUMÉ
An experiment was carried out to assess the allelopathic effect of leaf leaches of Morus alba on the growth and yield of Brinjal. Leaf leaches were prepared by soaking sun dry leaves in tap water for 24 Hours in a ratio of 1:10 (w/v). Various concentrations of leaf leashes (25, 50, 75 and 100%) were prepared. The result showed that the concentration plays an important inhibitory role on germination, shoot and root growth of brinjal. During laboratory experiment, seeds were soaked in different concentrations and germination percentage, root and shoot length were observed. After laboratory experiment it was noticed that that the seed soaked in 25% concentration of Morus alba leaf lashes has better results than higher concentrations. In pot culture experiment, control have good effects on growth and yield of brinjal as compared to different concentration. Lower concentrations (25 and 50%) have beneficial effects on growth and the yield as compared to the higher concentrations (75 and 100%). At lower concentrations of Morus alba leaf leachates, the survival percentage of crops were more as compared to the 100% concentration. It can be concluded that the harmful effect of Morus alba was less on brinjal and recommended to avoid its use in the early growth stages of the crops.