Seed Quality and Nutrient Uptake by Coriander as Influenced by Irrigation and Mixtalol Spray

Field experiutems were conducted on a sandy loam soil during 1991–92 and 1992–93 to study the effect or irrigation and mixtalol (photosynth) spray on yield, seed quality and nutrient uptake by coriander. Besides common pre-sowing irrigation to all the treatments, two irrigations applied at pre-flowering and seed filling stages produced more seed and stover yield and improved the test weight, protein and oil contents of seed and NPK uptake by seed and stover than no post-sowing irrigation and one irrigation at six-leaf or peak flowering stage. Spray with 5 mg mixtalol per litre improved all qualitative features of seed and NPK uptake through seed and stover and gave higher seed and stover yield than water spray and 10 mg VI of this chemical. Two subsequent sprays of mixtalol at two and four-leaf stages enhanced the test weight and protein content of seed, improved seed and stover yield and NPK uptake by seed and stover compared with only one spray at either of the stages.