RESPONSE OF DIFFERENT LEVELS OF NITROGEN, PHOSPHORUS AND POTASSIUM ON YIELD AND QUALITY OF ISABGOL (Plantago ovata Forsk.) UNDER MIDDLE GUJARAT CONDITIONS
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Date
2015
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AAU, Anand
Abstract
A field experiment was conducted at the College Agronomy Farm, Anand Agricultural University, Anand to find out the "Response of different levels of nitrogen, phosphorus and potassium on yield and quality of isabgol (Plantago ovata Forsk.) under middle Gujarat conditions" during rabi season of 2013-14. The experiment consisted of eighteen treatments combinations comprised of three nitrogen levels (15, 30 and 45 Kg N ha-1), three phosphorus levels (0, 15 and 30 Kg P2O5 ha-1) and two potassium levels (0 and 30 Kg K2O ha-1). The soil of the experimental plot was loamy sand in texture. The soil was medium in available nitrogen and phosphorus and higher in available potash. The experiment was laid out in Factorial Randomized Block Design with four replications. The treatments comprised three levels of nitrogen viz., N1: 15 kg N ha-1; N2: 30 kg N ha-1 and N3: 45 kg N ha-1, three levels of phosphorus viz., P1: 0 kg P2O5 ha-1; Fa: 15 kg P2O5 ha-1 and P3: 30 kg P2O5 ha-1 and two levels of potassium viz., K1: 0 kg K2O ha-1 and K2: 30 kg K2O ha-1. In all, there were eighteen treatment combinations. The results revealed that the plant stand at 25 DAS and at harvest was found non-significant due to different levels of nitrogen. Significantly highest average plant height was recorded at 45 and 75 DAS and harvest with treatment N3 (45 kg N ha-1). Significantly highest number of tillers per plant, total number of spikes per plant and number of effective spikes per plant obtained with treatment N3 (45 kg N ha-1). The treatment N3 (45 kg N ha-1) gave significantly higher length of spike. However, it was at par with treatment N2 (30 kg N ha-1). Significantly highest test weight (g) obtained with N3 (45 kg N ha-1). The results revealed that the swelling factor (cc g -1) was found non-significant due to different levels of nitrogen. So far as the seed and straw yields of isabgol is concerned, the treatment N3 (45 kg N ha-1) recorded significantly the maximum seed (1243 kg ha-1) and straw (6459 kg ha-1) 3delds as compared to other treatments N1 (15 kg N ha-1) and N2 (30 kg N ha-1). The magnitude of increase in seed yield of isabgol under the treatments N3 (45 Kg N ha-1) and N2 (30 Kg N ha-1) were at the extent of 35.85 % and 21.86 %, respectively as compared to N1 (15 Kg N ha-1). The increase in straw yield of isabgol under the treatments N3 (45 Kg N ha-1) and N2 (30 Kg N ha-1) were at the extent of 28.64 % and 14.72 %, respectively as compared to N1 (15 Kg N ha-1).
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AGRONOMY, AGRICULTURE, A STUDY