Nitrogen Management in Safflower [Carthamus tinctorius L.] Through Soil and Foliar Nutrition
Ramesh
Nitrogen Management in Safflower [Carthamus tinctorius L.] Through Soil and Foliar Nutrition - M.Sc. (Agri) - Dharwad University of Agricultural Sciences 2024 - 193 32 Cms
ABSTRACT
A field experiment was conducted during rabi 2023 at the Regional Agricultural Research Station, Vijayapura, using a Factorial Randomized Complete Block Design with two controls, replicated thrice. The first factor consisted of soil application three nitrogen levels: 100% Recommended Dose of Nitrogen (RDN), 75% RDN and 50% RDN and the second factor includes foliar applications of urea @ 2%, nano- urea @ 2 and 4 ml L 1 and no foliar spray (control). These twelve combinations were compared with two control treatments (Ghanajeevamrutha + jeevamrutha @ 20% and absolute control). The results indicated that the soil application of 100% RDN produced significantly higher seed yield (1675 kg ha-1), number of capitulum plant-1 (25.80), seed weight plant-1 (33.71 g), and the total dry matter production (117.49 g plant-1) compared to the other RDN levels. Among the foliar applications, spray of nano-urea @ 4 ml L-1 achieved significantly higher seed yield (1490 kg ha-1), number of capitulum plant-1 (24.94), seed weight plant-1 (30.20 g), and total dry matter production (112.39 g plant-1), which was on par with nano-urea @ 2 ml L-1. The combination of 100% RDN and nano-urea @ 4 ml L-1 resulted in the highest total uptake of nitrogen (78.64 kg ha-1), phosphorus (22.56 kg ha-1), and potassium (105.56 kg ha-1) over both controls. This treatment combination (100% RDN + nano-urea @ 4 ml L-1) also recorded significantly higher gross returns (Rs.104312 ha-1) and net returns (Rs. 67872 ha-1), which were on par with 100% RDN and nano-urea @ 2 ml L-1. The highest agronomic efficiency (40.78 kg kg-1) was observed in the treatment with 75% RDN + nano-urea @ 4 ml L-1. In conclusion, soil application of 100% RDN, combined with 2 - 4 ml L-1 nano-urea foliar spray, significantly increased safflower yield and economic returns.
Agronomy
630 / RAM
Nitrogen Management in Safflower [Carthamus tinctorius L.] Through Soil and Foliar Nutrition - M.Sc. (Agri) - Dharwad University of Agricultural Sciences 2024 - 193 32 Cms
ABSTRACT
A field experiment was conducted during rabi 2023 at the Regional Agricultural Research Station, Vijayapura, using a Factorial Randomized Complete Block Design with two controls, replicated thrice. The first factor consisted of soil application three nitrogen levels: 100% Recommended Dose of Nitrogen (RDN), 75% RDN and 50% RDN and the second factor includes foliar applications of urea @ 2%, nano- urea @ 2 and 4 ml L 1 and no foliar spray (control). These twelve combinations were compared with two control treatments (Ghanajeevamrutha + jeevamrutha @ 20% and absolute control). The results indicated that the soil application of 100% RDN produced significantly higher seed yield (1675 kg ha-1), number of capitulum plant-1 (25.80), seed weight plant-1 (33.71 g), and the total dry matter production (117.49 g plant-1) compared to the other RDN levels. Among the foliar applications, spray of nano-urea @ 4 ml L-1 achieved significantly higher seed yield (1490 kg ha-1), number of capitulum plant-1 (24.94), seed weight plant-1 (30.20 g), and total dry matter production (112.39 g plant-1), which was on par with nano-urea @ 2 ml L-1. The combination of 100% RDN and nano-urea @ 4 ml L-1 resulted in the highest total uptake of nitrogen (78.64 kg ha-1), phosphorus (22.56 kg ha-1), and potassium (105.56 kg ha-1) over both controls. This treatment combination (100% RDN + nano-urea @ 4 ml L-1) also recorded significantly higher gross returns (Rs.104312 ha-1) and net returns (Rs. 67872 ha-1), which were on par with 100% RDN and nano-urea @ 2 ml L-1. The highest agronomic efficiency (40.78 kg kg-1) was observed in the treatment with 75% RDN + nano-urea @ 4 ml L-1. In conclusion, soil application of 100% RDN, combined with 2 - 4 ml L-1 nano-urea foliar spray, significantly increased safflower yield and economic returns.
Agronomy
630 / RAM
