Document Type : Original Article
Authors
1
Associate Professor, Department of Plant Production and Genetics, Razi University, Kermanshah, Iran.
2
MSc. student, Department of Plant Production and Genetics, Razi University, Kermanshah, Iran.
3
Assistant Professor, Department of Plant Production and Genetics, Razi University, Kermanshah, Iran
10.22034/plant.2024.141110.1095
Abstract
Optimum sowing date is very important and it is one of the important factors for maximizing yield production. Although chemical fertilizers provide plant nutrients faster, to increase the quality of products, especially medicinal and aromatic plants, the use of organic fertilizers is better. The purpose of this research was to Investigate the effect of planting date and different amounts of farmyard manure on nitrogen crop efficiency, nitrogen absorption efficiency, nitrogen utilization physiological efficiency, nitrogen harvesting index and seed yield The experiment was carried out in the form of split plots based on a completely randomized block design in three replications in the research farm Campus of Agriculture and Natural Resources, Razi University in 2021. Experimental treatments included farmyard manure as the main factor (0, 10, 20, and 30 ton ha-1) and sowing date (April 4, April 24, and May 14) as a sub factor. The results showed that sowing date, farmyard manure and their interaction had a significant effect on all evaluated traits. The increase in farmyard manure decreased nitrogen capture efficiency (NCE), nitrogen physiological efficiency (NUE), nitrogen agronomic efficiency (ANUE) and nitrogen harvesting index (NHI). By increasing farmyard manure application from 0 to 30 ton ha-1, NCE, ANUE, NUE and NHI decreased 50.23, 54.55, 73.16 and 61.65, respectively. Based on the results, the sowing date of April 4th, accompanied by the application of 30 ton ha-1 of farmyard manure, was the best treatment in this experiment.
Keywords
)