RESUMO
The current study was conducted at the Farming System Research Station, situated within the Department of Agronomy at the College of Agriculture, Junagadh Agricultural University in Junagadh, Gujarat, India. This research took place during the winter cycle (Rabi season) 2021 to 2022 and 2022 to 2023. In this study, the CROPWAT crop irrigation schedule provides an overall Evapotranspiration (ETc) value of 549.6 millimeters as the optimal water requirement for achieving maximum crop production with sufficient water supply. The actual water use by the crop during its growth period amounted to 544.2 millimeters and total net irrigation applied was 507.9 millimeters, while the gross irrigation amounted to 725.6 millimeters. The irrigation efficiency was 100%. Comparing this approach to irrigation scheduling based on the Irrigation Water to Crop Potential Evapotranspiration (IW/CPE) ratio, using CROPWAT enabled the precise management of irrigation water. It ensured that the alfalfa crop received the appropriate amount of water according to its specific growth stage requirements. The CROPWAT model data indicates that there was no yield reduction, even with a 100% critical depletion of available soil moisture. Additionally, the seasonal yield response factor was calculated to be 0.80%. These findings emphasize the effectiveness of the irrigation strategy employed, resulting in optimal crop yields without yield losses due to critical soil moisture depletion.
RESUMO
A field experiment ‘‘Response of coriander (Coriandrum sativum L.) to potassium and sulphur’’ was conducted at S D Agricultural University, Gujarat during rabi season 2021-22 on loamy sand soil. The experiment comprised of 9 treatment combinations. Application of 40 kg K2O/ha significantly influenced the growth viz., plant height at 60, 90 DAS and at harvest, number of primary, secondary, tertiary branches per plant and yield attributes viz., number of umbels per plant, seed yield per plant, 1000 seed weight as well as seed and straw yields. The maximum seed and straw yields were recorded under the application of 30 kg S/ha similar response trend was also observed in growth and yield attributes.