Record Details

INFLUENCE OF ORGANICS ON SOIL PROPERTIES WITH SPECIAL REFRENCE TO PHOSPHORUS

KrishiKosh

View Archive Info
 
 
Field Value
 
Title INFLUENCE OF ORGANICS ON SOIL PROPERTIES WITH SPECIAL REFRENCE TO PHOSPHORUS
 
Creator SUJALA, CHODIGANJI
 
Contributor PRASUNA RANI, P
 
Subject ORGANICS, SOIL, PHOSPHORUS
 
Description A field experiment entitled “Influence of organics on soil properties with special reference to phosphorus” was conducted at Agricultural College Farm, Bapatla during kharif , 2013. The test soil was non-saline, clay loam in texture and slightly alkaline in reaction. The soil was low in available nitrogen, medium in phosphorus, high in potassium and sufficient in sulphur status. The available Fe and Cu were above their respective critical limits while, Zn and Mn were deficient in soils.
The experiment was laid out in RBD with eight treatments replicated thrice. The treatments comprised of T1 - Control, T2 - 100% N - Fertilizers, T3 - 100% N - FYM, T4 - 100% N - PM, T5 - 75% N- FYM + 25% N - Fertilizers , T6 - 75% N - PM + 25% N - Fertilizers, T7 - 50% N- FYM + 50% N - Fertilizers , T8 - 50% N - PM + 50% N - Fertilizers. Well decomposed FYM and dried poultry manure were applied 15 days before sowing. Nitrogen was applied in three splits as per the treatments in the form of urea. Phosphorus and potassium were applied in the form of SSP and muriate of potash, respectively to all the treatments considering their contents in organics.
The influence of various treatments on soil properties ( physical, physicochemical properties, available nutrients, phosphorus fractions and biological activity) and performance of sweet corn (growth parameters, yield, nutrient contents and uptake) were determined by standard procedures at different stages.

Application of inorganics alone or in combination with organics didn’t show marked difference in bulk density, pH, EC and CEC of the soils. However, sole organic treated plots resulted in significant increase in organic carbon content and improved water holding capacity of the soil over other treatments. FYM was found to be superior in maintaining the highest organic carbon while, poultry manure recorded maximum mineral nitrogen and available nutrient contents.
A significant response was reported in saloid -P with the integrated use of 50% N through organic manures (PM and FYM) along with 50% N through fertilizers in the initial stages while, at harvest the highest was recorded in the treatment with 100 % N - PM. The imposed treatments did not significantly influence the remaining P fractions viz., Al-P, Fe-P, Ca- P and total P.
Addition of organics in all combinations showed significant influence on bacteria and actinomycetes population, While the integrated treatments were found to be on par with sole inorganics in fungal counts and enzyme activities (acid and alkaline phosphatase).
Highest plant height was recorded in the integrated treatment that received 50% N- PM + 50% N - Fertilizers. Green cob and fodder yields were maximum in treatment received entire nitrogen through fertilizers followed by the treatment with 50% N -PM + 50 % N- Fertilizers. The nitrogen content at tasseling and harvest was significantly influenced while, the effect of treatments on other nutrients in plants was non-significant. The uptake of macro and micronutrients was markedly influenced by the treatments with maximum values recorded by the treatment that received 100 % N - Fertilizers, which was at par with 50 % N - PM and 50 % N - Fertilizers.
The present study revealed that the sole organic treatments were preeminent in sustaining the soil properties at harvest followed by combined application of organics and inorganics. The integration of poultry manure and inorganics in equal doses recorded overall enhancement of soil properties and comparable yield while, improving the nutritional quality of grain and stover.
 
Date 2016-12-22T10:21:30Z
2016-12-22T10:21:30Z
2014
 
Type Thesis
 
Identifier 165P.
http://krishikosh.egranth.ac.in/handle/1/92040
 
Language en_US
 
Relation D5071;
 
Format application/pdf
 
Publisher ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY