To study the effect of iron and manganese on yield, nutrients content and their uptake by spinach crop at various cuttings

A pot experiment was conducted at pot culture yard in Department of Agricultural chemistry and soil science of R.B.S. College Bichpuri, Agra, (U.P.). To study the effect of iron and and manganese on yield, nutrients content and their uptake by spinach crop at various cuttings. Four levels (0, 5, 10, 20 ppm) of each iron and manganese were evaluated in factorial design with three replications. The results revealed that the consistent and significant increase in green foliage and dry matter yield was noted with increasing levels of Fe and Mn at various cuttings. The highest green foliage (18.63 g/pot) and dry matter yield (2.08 g/pot) was recorded with 10 ppm iron and Mn treatments. Higher yield of green foliage and dry matter was noted with the advancement of growth. Highest dose (20 ppm) of iron and manganese caused reduction in yield of green foliage dry matter in both the cuttings. Nutrient composition of spinach plants at both cuttings in respect of N, P, Fe, Mn content was consistently and significantly increased up to (10 ppm) dose of iron and manganese level. Thereafter, decrement was noted. Similar tend was noted in nutrient uptake by spinach plants at various cuttings. Investigations also revealed that Fe and Mn has antagonistic relation in respect of their content and uptake in both the cuttings of spinach plants.