Effect of Fertility Levels, Organic Sources and Bio- Inoculants on Soil Properties, Nutrient Uptake and Production of Wheat (Triticum aestivum L.) in Haplustepts
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Date
2021-01-19
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Publisher
MPUAT, Udaipur
Abstract
A field experiment entitled “Effect of Fertility Levels, Organic Sources and
Bio-inoculants on Soil Properties, Nutrient Uptake and Production of Wheat
(Triticum aestivum L.) in Haplustepts” was conducted at Agronomy Farm,
Rajasthan College of Agriculture, Udaipur during rabi season in 2015-16 and 2016-
17. The experiment consisted of 24 treatment combinations comprising of three levels
of fertility (50, 75 and 100 per cent RDF), four organic sources (FYM @ 5 and 10 t
ha-1, vermicompost @ 2.5 and 5 t ha-1), and two bio- inoculations (Without
inoculation and Azotobacter + PSB). Experiment was conducted under factorial
randomized block design replicated thrice taking wheat var. Raj- 4037 as test crop.
The results of the study showed that enrichment of soil with 75 per cent RDF
significantly increased the effective tillers m-1 row length, number of grains spike-1,
test weight, grain, straw and biological yield, nutrient content viz. N, P, K, Fe, Mn, Zn
and Cu and protein content in grain over 50 per cent RDF. However, nutrient uptake
by grain and straw as well as total uptake by crop increased significantly up to 100 per
cent RDF. Further results showed that 100 per cent RDF decreased the bulk density
and particle density and increased the water holding capacity of soil, while organic
carbon, available N, P, K, Fe, Mn, Zn and Cu content of soil increased significantly
with 75 per cent RDF as compare to 50 per cent RDF. Dehydrogenase activity and
microbial (bacterial and fungal) population of soil significantly enhanced with the
application of 75 per cent RDF over 50 per cent RDF. The maximum monetary return
of ` 63688 with benefit cost ratio of 2.28 were obtained with 75% RDF.
Application of vermicompost @ 5 t ha-1 significantly increased the yield
attributes and yields viz. effective tillers m-1 row length, number of grains spike-1, test
weight, grain, straw and biological yield, nutrient content and uptake as well as total
uptake of N, P, K, Fe, Mn, Zn and Cu and protein content in grain other than organic manures. Further results showed that vermicompost @ 5 t ha-1 decreased the bulk
density and particle density and increased the water holding capacity, available N, P,
K, Fe, Mn, Zn and Cu content of soil, however, organic carbon increased significantly
with 10 t FYM ha-1. Dehydrogenase activity and microbial (bacterial and fungal)
population of soil significantly enhanced with 5 t vermicompost ha-1. The maximum
monetary return of ` 64661 were found with vermicompost @ 5 t ha-1 over other
treatments however highest benefit cost ratio of 2.38 were observed in vermicompost
@ 2.5 t ha-1 over control.
Combined use of vermicompost @ 5 t ha-1 along with 75% RDF significantly
increased the grain, straw and biological yields of crop, nitrogen, phosphorus and
potassium uptake by grain, straw and total uptake over other treatments but remained
at par with FYM @ 10 t ha-1 + 100 per cent RDF and vermicompost @ 5 t ha-1 + 100
per cent RDF.
Dual inoculations of Azotobacter + PSB significantly increased the effective
tillers m-1 row length, number of grains spike-1, test weight, grain, straw and
biological yield, content and uptake of N, P, K, Fe, Mn, Zn and Cu by crop, water
holding capacity, available N, P and K content of soil than without inoculation.
Dehydrogenase activity and microbial (bacterial and fungal) population of soil
significantly enhanced with dual inoculation of seed with Azotobacter + PSB. The
maximum monetary return of ` 63711 with benefit cost ratio of 2.28 were obtained
with dual inoculation of Azotobacter + PSB.
Description
Effect of Fertility Levels, Organic Sources and Bio- Inoculants on Soil Properties, Nutrient Uptake and Production of Wheat
Keywords
Citation
Kumari S. And Sharma M.