EFFECT OF BIOCHAR ON SOIL PROPERTIES AND YIELD OF GROUNDNUT
Loading...
Date
2022-08-17
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
guntur
Abstract
A field experiment entitled “Effect of biochar on soil properties and yield of groundnut” was conducted at Agricultural College Farm, Bapatla during kharif, 2019-2020. The experimental soil was loamy sand in texture, neutral in reaction and non-saline. The soil was low in organic carbon, low in available nitrogen, medium in available phosphorus, available potassium, sufficient in sulphur and sufficient in all available cationic micronutrients (Zn, Fe, Mn and Cu). The biochar of Redgram stalk, Prosopis juliflora and Sugarcane trash was prepared by pit method under anaerobic condition.
The experiment was laid out in randomized block design (RBD) with nine treatments replicated thrice. The treatments consisted Control treatment (without biochar and inorganic fertilizers) (T1); 100% RDF (T2); 100% RDF + FYM @ 5 t ha-1 (T3); 100% RDF + Redgram stalk biochar @ 4 t ha-1 (T4); 75% RDF + Redgram stalk biochar @ 4 t ha-1 (T5); 100% RDF + Prosopis juliflora biochar @ 4 t ha-1 (T6); 75% RDF + Prosopis juliflora biochar @ 4 t ha-1 (T7); 100% RDF + Sugarcane trash biochar @ 4 t ha-1 (T8); 75% RDF + Sugarcane trash biochar @ 4 t ha-1 (T9).
FYM @ 5 t ha-1 two weeks before and Biochar @ 4 t ha-1 were applied one week before sowing to the respective plots. Nitrogen was applied in the form of urea at different levels as per the treatments in 2 splits (at basal dose and at 30 DAS). Entire phosphorus and potassium was applied as basal dose in the form of SSP and MOP. The effect of FYM and biochar on soil properties and performance of groundnut at different stages were determined by following standard procedures.
Reduction in soil bulk density was observed in FYM and biochar treated treatments (4 t ha-1). Significant increase in porosity, water holding capacity and soil moisture content was noticed in FYM and biochar applied treatments. The treatments imposed had non-significant effect on soil pH and EC. The CEC and organic carbon was increased in FYM treated plot followed by biochar treated plots. The available N,
Name of the Author
:
D. PRATIBHA
Title of thesis
:
“EFFECT OF BIOCHAR ON SOIL PROPERTIES AND YIELD OF GROUNDNUT’’
Degree to which it is submitted
:
Master Of Science In Agriculture
Faculty
:
AGRICULTURE
Major field of study
:
SOIL SCIENCE AND AGRICULTURAL CHEMISTRY
Major Advisor
:
Dr. P.R.K. PRASAD
University
:
Acharya N. G. Ranga Agricultural University
Year of submission
:
2021
xvi
P2O5, K2O and S were highest in treatment which received 100% RDF + FYM @ 5 t ha-1 and this was on par with the treatments supplied with 100% RDF + biochar through different sources @ 4 t ha-1 through different sources (T4, T6 and T8). The treatment supplied with inorganic fertilizer alone (T2) showed greater values compared to treatment which received 75% RDF + biochar through different sources @ 4 t ha-1 through different sources (T5, T7 and T9). However, the influence of treatments on soil micronutrients (Zn, Fe, Mn and Cu) was not significant.
Soil microbial population (bacteria, fungi and actinomycetes) and soil enzymes (urease, dehydrogeanse, acid and alkaline phosphatase) were significantly superior in treatment T3 which received 100% RDF + FYM @ 5 t ha-1 compared to biochar added treatments. The lowest values were recorded in control (T1). Dry matter production, growth parameters, yield parameters and quality parameters were highest in treatment which received 100% RDF + FYM @ 5 t ha-1 and this was on par with the treatment supplied with 100% RDF + biochar through different sources @ 4 t ha-1 (T4, T6 and T8). The corresponding lowest values were recorded in control (T1). Groundnut pod yield was highest (2522 kg ha-1) in T3 treatment received 100% RDF + FYM @ 5 t ha-1, which was on par with 100% RDF + biochar through different sources @ 4 t ha-1 (T4, T6 and T8).
The N, P, K concentration and their uptake by the plants were significantly higher in 100% RDF + FYM and biochar applied treatments (T4, T6 and T8) compared to the control (T1). Sulphur and Micronutrient concentrations (Zn, Fe, Mn and Cu) were not significantly influenced by biochar applied treatments. Significant increase in uptake of sulphur and micronutrients (Zn, Fe, Mn and Cu) were noticed due to increased dry matter production. The results further showed that combined application of 100% RDF + FYM @ 5 t ha-1 along with biochar applied treatments have been proved to be superior treatments for the best management of soil fertility. Among 100% RDF + biochar @ 4 t ha-1 and 75% RDF + biochar through different sources @ 4 t ha-1 the values noted were highest in 100% RDF + biochar through different sources @ 4 t ha-1.
Description
EFFECT OF BIOCHAR ON SOIL PROPERTIES AND YIELD OF
GROUNDNUT