Effect of Organic and Inorganic Source of Nutrients on Different Forms of Nitrogen and Productivity of Fenugreek (Trigonella foenum – graecum L.)
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Date
2024
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MPUAT, Udaipur
Abstract
A field experiment was conducted during rabi season of 2021-22 and 2022-23
at Instructional Farm (Agronomy), Rajasthan College of Agriculture, Udaipur
(Rajasthan) to study the “Effect of Organic and Inorganic Source of Nutrients on
Different Forms of Nitrogen and Productivity of Fenugreek (Trigonella foenum –
graecum L.)”. The experiment was laid out according to factorial Randomized Block
Design with three replications. The treatments consisting of four levels of organic
source of nutrients (control, 2 t vermicompost + foliar spray of vermiwash 10%, 4 t
vermicompost + foliar spray of vermiwash 7.5% and 6 t vermicompost + foliar spray
of vermiwash 5% ha-1) and four levels of inorganic source of nutrients (control, 50%
RDF + foliar spray of 0.75% ZnSO4, 75% RDF + foliar spray of 0.50% ZnSO4 and
100% RDF + foliar spray of 0.25% ZnSO4 ha-1) were applied to the fenugreek var.
RMt-1 as soil application with uniform application of nitrogen, phosphorus and
potassium as per recommended doses. The main findings of investigation are
summarized as:
1. The application of 6 t vermicompost + FS of 5%vermiwash ha-1 (ON3)
significantly increased plant height at harvest, number of pods plant-1, test
weight and seed yield, straw yield, biological yield, nutrient content and
uptake by seed and straw, protein content, chlorophyll content, physicochemical
properties of soil, availability of plant nutrients, soil biological
properties and different forms of nitrogen in soil. However, maximum net
returns and B:C ratio were obtained with application of 4 t vermicompost + FS
of vermiwash 7.5% during both the years as well as in pooled analysis. The application of 100% RDF + FS of 0.25% ZnSO4 ha-1 significantly
improve the growth and yield attributes viz., plant height at harvest, number of
pods plant-1, test weight and seed yield, straw yield, biological yield, nutrient
content and uptake by seed and straw, protein content, chlorophyll content,
physico-chemical properties of soil, availability of plant nutrients, soil
biological properties and different forms of nitrogen in soil, net returns and
B:C ratio of fenugreek during both the years as well as in pooled analysis.
3. The maximum seed yield, straw yield, biological yield, Nitrogen, phosphorus,
potassium and zinc uptake by seed and straw was recorded with combined
application of 6 t vermicompost with FS of vermiwash 5% + 100% RDF with
FS of 0.25% ZnSO4 ha-1 (ON3 + ION3) which was found to be statistically at
par ON2 + ION3, ON3 + ION2 and ON2 + ION2 during 2021-22, 2022-23 and in
pooled analysis, respectively.
4. The combined application of (4 t vermicompost and FS of vermiwash 7.5% +
100% RDF and FS of 0.25% ZnSO4 ha-1) ON2ION3 significantly highest net
returns and B:C ratio, which was statistically at par with ON3ION3, ON2ION2
and ON3ION2 during 2021-22, 2022-23 and in pooled analysis, respectively.
5. The seed yield of fenugreek was found significantly and positively correlated
with straw yield, biological yield, total uptake of N (seed and straw) and
different forms of nitrogen in soil and coefficient of multiple determinations
(R2) was found highly significant.
6. Therefore, in this tract for fenugreek variety RMt-1, the application of 4 t
vermicompost with FS of vermiwash 7.5% ha-1 + 100% RDF with FS of
0.25% ZnSO4 ha-1 (ON2+ION3) as a most profitable dose is being
recommended for higher seed yield and net returns per hectare in Sub-humid
Southern Hills and Aravali region of Rajasthan
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Citation
Gurjar P.C. and Meena R.H.