EFFECT OF DIFFERENT LEVELS OF NITROGEN AND PHOSPHORUS ON GROWTH, YIELD AND QUALITY OF ISABGOL (Plantago ovata Forsk.) 2905
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Date
2019-07
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JAU, JUNAGADH
Abstract
A field experiment entitled the effect of different levels of nitrogen and
phosphorus on growth, yield and quality of isabgol (Plantago ovata Forsk.). The
experiment was carried out during rabi season of the year 2017-18 at the Instructional
Farm, Department of Agronomy, College of Agriculture, Junagadh Agricultural
University, Junagadh.
The experiment was laid out in Factorial RBD with 3 replications by combining
2 factors namely four levels of nitrogen (0, 15, 30 and 45 kg/ha) and four levels of
phosphorous (0, 15, 30 and 45 kg/ha). Addition of nitrogen and phosphorous fertilizers
recorded better growth, yield and quality parameters of the isabgol crop. The soil of the
experimental plot was clayey in texture and slightly alkaline in reaction with pH 7.67
and EC 0.52 dS/m. The soil was high in available nitrogen (245 kg/ha), medium in
available phosphorus (35 kg/ha) and potassium (270 kg/ha).
Results of present investigation indicated that the application of 45 kg N/ha
significantly increased growth parameters viz., plant height, plant spread, number of
tillers per plant, yield attributes like number of spikes per plant, spikes length 1000 seed
weight and ultimately gave higher seed yield (908.3 kg/ha), straw yield (2741.17
kg/ha), quality parameters like protein content in seed and N, P and K content and
uptake by crop over control.Abstract
Application of 30 kg P2O5/ha was increase the growth parameters like plant
height, plant spread, number of tillers per plant, yield attributes viz., number of spikes
per plant, spikes length 1000 seed weight and ultimately gave higher seed yield (887.50
kg/ha), straw yield (2682.75 kg/ha) and N, P and K content and uptake by crop over
control.
The combine application of 45 kg N/ha with 30 kg P2O5/ha registered significant
the highest seed yield (1067 kg/ha) over control.
Based on finding and economics, it can be concluded that maximum gross return
( 244500/ha), net return ( 202677/ha) and BCR (5.85) was obtained with application
of 45 kg N/ha and 30 kg P2O5/ha as per requirement under medium black calcareous
soil under South Saurashtra agro climatic zone.