SITE SPECIFIC NUTRIENT MANAGEMENT: VARIABILITY IN SOYBEAN AND COTTON YIELD RESPONSE AND SOIL PROPERTIES.
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Date
2019-09-24
Authors
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Publisher
Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra.
Abstract
The field experiments were conducted to study the “Site Specific Nutrient Management: Variability in Soybean and Cotton Yield Response and Soil Properties” was conducted during the kharif season 2014-15 and 2015-16 at farmers’ fields in village’s in Akola district. The experiments comprised of four treatments as per the omission plot technique in randomized block design replicated on fifteen farmers’ fields and each farmers field was considered as one replication. The soil samples were collected at the start of experiment and after harvest of soybean and cotton to study the response of soybean and cotton to different treatments on properties of soil and nutrients on study of response of nutrients to soybean and cotton on the soil properties. The plant samples were collected at harvest of soybean and at boll development stage of cotton to estimate the nutrient concentration and uptake of primary, secondary and micronutrients. The seed and straw in respect of soybean was recorded at the harvest of crop. The yield attributing characters and seed cotton yield and stalk yield was recorded. The significantly highest seed yield of soybean was recorded with balanced application of NPK. The yield of soybean was most influenced by the omission of phosphorus indicating that phosphorus is most crucial element in soybean. The plant height, number of pods, number of seed per pod recorded highest with balanced nutrients and reduced significantly due to omission of nitrogen and phosphorus. The number of nodules per plant were decreased significantly due to omission of P and N. The significantly highest total uptake of N,P, K, S, Ca, Mg and micronutrients by soybean was recorded with balanced application of NPK. The significantly highest seed cotton yield and stalk yield, number of boll per plant and boll weight were recorded with the balanced application of nitrogen, phosphorus and potassium. The significant reduction in seed cotton yield and stalk yield were recorded in omission of nitrogen followed by potassium and phosphorus as compared to combined application of NPK in balanced quantity. The highest total uptake of N,P, K, S, Ca, Mg and micronutrients were recorded with the application of ample NPK and higher reduction in omission nitrogen and potassium. The post-harvest soil organic carbon content was found highest with the balanced application of NPK. The highest available nitrogen, phosphorus, potassium, sulphur, and micronutrients (Zn, Fe, Mn and Cu) were recorded with application of NPK in balanced quantity in both crops after harvest. The primary, secondary and micronutrients were found low where N,P and K was omitted from balanced application. The partial factor productivity and production efficiency were found most sensitive to potassium followed by nitrogen and phosphorus application in cotton. The partial factor productivity and production efficiency was found most sensitive to phosphorus followed by potassium and nitrogen application in soybean. The different from of potassium recorded highest in the treatment of potassium application and its deletion reduced availability of potassium after harvest of soybean and cotton. The different forms of potassium highest reduction due to omission of potassium. It can be concluded that the site specific nutrient management with balanced application of nutrients to soybean and cotton enhanced the yield and nutrient uptake, nutrient use efficiency besides improving the residual soil fertility and various potassium fractions.
Description
The present investigation was conducted during the kharif season 2014-15 and 2015-16 at farmers’ fields in village’s in Akola district. The experiments comprised of four treatments as per the omission plot technique in randomized block design with fifteen replications. One farmer’s field was considered as one replication. The four treatments were randomly assigned at each location. The soil of experimental site were deep and very dark black in colour at each sites and grouped as Vertisols. The soil samples were collected at the start of experiment and after harvest of soybean and cotton to study the response of soybean and cotton to different treatments on properties of soil and response of nutrients to soybean and cotton on the soil properties.
Keywords
Soil science, Soil resources, Soil analysis, Field Experimentation, Experimental Design, Vertisols, Soil fertility, Soil Productivity, Potassium fraction, Nutrient content, Nutrient Uptake, Balance sheet, Principal component analysis, Soil quality, Soil management, Textural soil types , Calcareous Soils, Phosphorus, Cation exchange capacity, Nutrient use efficiency, Acidity, Alkalinity, Soil pH, Electrical Conductivity, Soil physics, Soil Sampling, Soil improvement, Soil types, Soil chemistry, Soil properties, Agricultural Statistics, Weather Data, Soybean crops, Cotton crops, Soil Chemicophysical Properties, Oil crops.
Citation
JANGILWAD, MADHAVI DATTATRYA. (2019). Site specific nutrient management: Variability in soybean and cotton yield response and soil properties. Department of soil science and agricultural chemistry, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola. Ph. D. 2019. Print. xx, 322p. (Unpublished).