Vol. 12, Issue 12 (2023)

Author(s):
PJ Gohil, SK Chhodavadia and MS Vasava

Abstract:
An experiment was conducted during Rabi seasons of 2019-20 to 2021-22 at Instructional Farm, Department of Agronomy, College of Agriculture, JAU, Junagadh entitled “Nutrient management in isabgol (Plantago ovata Forsk) under South Saurashtra Agroclimatic Zone”. The treatments of the experiment comprised with 3 levels of nitrogen viz., 30, 60 and 90 kg N/ha, two levels of phosphorus viz., 30 and 60 kg P₂O₅/ha and two levels of potash viz., 15 and 30 kg K₂O/ha conducted on factorial randomized block design with three replications The nitrogen was applied in tow splits, half at the time of sowing and the remaining half at 45 DAS. Common application of FYM 5 t/ha was done in all the plots. The results of the experiment revealed that significantly higher growth parameters and yield attributes like plant height, number of tillers per plant, number of spikes per plant, number of seeds per spike and spike length of Isabgol were registered under the application of 90 kg N/ha, 60kg P₂O₅/ha and 30 kg K₂O/ha. However, number of spikes per plant and number of seeds per spike were remained at par with application of 60 kg N/ha. While number of seeds per spike were not affected significantly by levels of phosphorus. Application of 90 kg N/ha (N₃) and 30 kg K₂O/ha (K₃) registered significantly higher seed yield of 1448 and 1439 kg/ha, respectively. However, in case of nitrogen, it was remained at par with application of 60 kg N/ha (N₂). Application of phosphorus did not exert any significant effect on seed yield of Isabgol. The stover yield was differed significantly due to different treatments and significantly higher stover yield was recorded under application of 90 kg N/ha, 60kg P₂O₅/ha and 30 kg K₂O/ha than rest of the levels. Significantly, the highest nutrient content and uptake of seed and stover were registered under application of 90 kg N/ha, 60 kg P₂O₅/ha and 30 kg K₂O/ha. The highest net return and B:C ratio of ` 73504 and 2.58, respectively was obtained under application of 60 kg N, 30 kg P and 30 kg K₂O/ha (N₂P₁K₂).