Title: EFFECT OF VARIOUS LEVELS OF FERTILIZERS ON SOIL FERTILITY, YIELD, AND NUTRIENT UPTAKE BY Bt-COTTON ON INCEPTISOLS.
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Date
2022-10-28
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Publisher : Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra.
Abstract
Abstract: A field study entitled “Effect of various levels of fertilizers on soil fertility, yield and nutrient uptake by Bt-cotton on Inceptisols” was conducted during kharif2020-21 at Research farm, Cotton Research Unit, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra. The soil of the experimental site classified as Inceptisol, it was calcareous in nature and moderately alkaline in reaction. The fertility status of the soil indicates that the soil was medium in organic carbon, low in available nitrogen, very low in available phosphorus and very high in available potassium.
The soil samples were collected at the start of experiment and after harvest of cotton to study effect of different treatments on soil properties. The plant samples were collected at boll development stage (85-90 DAS) to estimate the nutrient concentration, dry matter and uptake of major nutrients. The seed cotton and stalk yield was also recorded.
The experiment comprised of different levels of fertilizers comprised of five treatments involving 60:30:30 NPK kg ha-1, 90:45:45 NPK kg ha-1, 120:60:60 NPK kg ha-1, 150:75:75 NPK kg ha-1 and absolute control. Twenty treatment combinations were executed in randomized block design with four replications.
The results indicated that the chemical properties such as soil organic carbon, availability of nitrogen, phosphorus and potassium and uptake of nitrogen, phosphorus and potassium by cotton at boll development stage were improved significantly under application of 150:75:75 NPK kg ha-1 which was followed by application of 120:60:60 NPK kg ha-1 and 90:45:45 NPK kg ha-1 with higher seed cotton yield. Application of very high fertilizer doses in rainfed condition helped to improve higher vegetative growth of cotton.
Hence, it is concluded that, for attending optimum yield use of soil test based fertilizer application or by restricting to the presently available fertilizer dose of 90:45:45 NPK kg ha-1 use for improvement in yield of cotton, nutrient uptake and soil fertility in Inceptisol under rainfed condition.
Description
Description: The research work was carried out during Kharif season of 2020-2021 at Research farm of Cotton research unit, Department of Soil science and agricultural chemistry, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra. The experiment was laid out in Randomized Block Design (RBD) with five treatments and four replications.
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Citation
Citation: BOLE, SRUSHTI VIJAY. (2021). Effect of various levels of fertilizers on soil fertility, yield, and nutrient uptake by Bt-Cotton on inceptisols. Department of Soil science and agricultural chemistry, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola. M. Sc. 2021. Print. xiii, 65p. (unpublished).