Please use this identifier to cite or link to this item: http://krishikosh.egranth.ac.in/handle/1/5810005528
Authors: Patil, Vijaykumar Sakharam
Advisor: Kadlag, Dr.A.D
Adsule, Dr.R.N
Rane, Dr.S.D
Kharche, Dr.V.K
Title: EFFECT OF DIFFERENT LEVELS OF PHOSPHORUS AND SULPHUR ON YIELD, HYDROCYANIC ACID CONTENT AND QUALITY OF FORAGE SORGHUM
Publisher: MAHATMA PHULE KRISHI VIDYAPEETH, RAHURI - 413 722, DIST. AHMEDNAGAR, MAHARASHTRA, INDIA
Language: en
Type: Thesis
Agrotags: null
Abstract: A field experiment was conducted during kharif 2002-03 and 2003-04 at Post Graduate Institute Farm, Department of Soil Science and Agricultural Chemistry to study the "Effect of different levels of phosphorus and sulphur on yield, hydrocyanic acid content and quality of forage sorghum". The experiment was laid out in randomized block design (factorial) with three replications and eighteen treatment combinations. The soil represent pather (Savergaon) series of Inceptisol and belongs to Vertic Haplustepts which was moderately alkaline with low available nitrogen, phosphorus and high in available potassium. The treatment consist of two fodder sorghum genotypes viz., Ruchira and M 35-1, three levels each of phosphorus and sulphur @ 0, 40 and 80 kg ha1. The hydrocyanic acid content of fodder sorghum M 35-1 was higher during 2002-03 (45.75 mg kg-1), 2003-04 (45.95 mg kg1) and pooled mean (55.93 mg kg-1). The phosphorus nutrition to fodder sorghum @ 80 kg h a 1 significantly reduced the hydrocyanic acid content (49.00, 43.67 and 49.55 mg kg-1, respectively) and sulphur @ 40 kg h a 1 (52.50, 61.00 and 52.82 mg kg-1, respectively) during 2002-03 and 2003-04 and pooled mean at 15 DAS of first cut. The hydrocyanic acid content at 30 DAS of first cut in Ruchira fodder sorghum was higher than M 35-1 in both the year of investigation (43.30, 38.85 and 40.26, 38.82 mg kg1 , respectively). Sulphur nutrition has varied the hydrocyanic acid content of fodder sorghum by 80 kg h a 1 (41.50 mg kg-1) during 2002-03 and 40 kg ha-1 (39.06 mg kg-1) during 2003-04. The hydrocyanic acid content of Ruchira fodder sorghum genotype was significantly lower (56.15 and 55.59 mg kg-1) at 15 days after second cut during 2002-03 and 2003-04. The residual fertility of phosphorus and sulphur @ 40 kg ha-1 reduced the hydrocyanic acid content in fodder sorghum genotypes at 15 days after first cut during both the year of experimentation (71.28 and 71.17 mg kg"1). The residual fertility of 80 kg P2O5 ha-1 and 80 kg S h a 1 during both the year significantly reduced the hydrocyanic acid in fodder sorghum (42.78 and 42.78 mg kg-1 and 41.33 and 41.39 mg kg1) in second cut. The phenolic content of fodder sorghum of first cut was significantly higher in both the year of investigation by Ruchira at 15 DAS (19.37 and 19.29 mg 100 g-1 tissue) and M 35-1 at 30 DAS 47.71 and 47.64 mg 100 g-1 tissue). The phosphorus level @ 80 kg ha-1 in both the year recorded significantly higher content of phenolics at 15 DAS (19.70 and 19.74 mg 100 g1 tissue) and 30 DAS (46.89 and 46.84 mg 100 g-1 tissue). The sulphur application @ 80 kg ha-1 reported higher content of phenolics in both the year at 15 days (19.70 and 19.74 mg 100 g-1 tissue) and 30 days (47.25 and 47.14 mg 100 g-1 tissue) of first cut. The sorghum genotypes M 35-1 recorded significantly higher phenolics during both the year (86.59 and 86.67 mg 100 g1 tissue) and residual phosphorus of 80 kg h a 1 (84.17 and 84.10 mg 100 g-1 tissue) at 30 days of second cut The neutral detergent fibre (pooled mean) content of fodder sorghum at first cut was significantly higher in M 35-1 (68.32 [68.28] per cent). The fodder sorghum nutrition of phosphorus @ 0, 40 and 80 kg h a 1 were at par with each other (67.70 [67.70], 67.92 [68.10] and 67.12 [66.92] per cent, respectively) and sulphur at same levels [67.04 (66.90), 67.94 (67.95) and 67.82 (67.86) per cent, respectively]. The residual phosphorus and sulphur @ 40 kg ha-1 were beneficial during 2002- 03 (67.82 and 67.82 mg 100 g-1) and 2003-04 (67.92 and 68.02 mg 100 g-i). The acid detergent fibre content of fodder sorghum did not influence by the genotypes, phosphorus, sulphur nutrition at first cut and second cut. The reducing sugars content of fodder sorghum was significantly higher m M 35-1 at first cut during both the year of experiments (0.426 and 0.427 %). The sulphur nutrition @ 40 kg ha-1 recorded significantly high reducing sugars content (0.437 and 0.434 %) during both the year. The fodder sorghum genotype M 35-1 recorded higher non-reducing sugars (3.85 and 3.84 %) at first cut during 2002-03 and 2003-04. The phosphorus nutrition @ 80 kg ha-1 recorded higher amount of non-reducing sugars (4.29 and 4.23 %) and sulphur @ 40 kg ha-1 (3.76 and 3.69 %). At second cut of fodder sorghum of M 35-1 contains higher non-reducing sugars m both the year (3.78 and 5.81 %). The residual phosphorus of 80 kg P2O5 ha-1 recorded higher non-reducmg sugars (4.17 and 5.17 %) and sulphur of 80 kg S h a 1 (6.233 %) in 2003-04. The crude protein content at first cut of M 35-1 was significantly higher during both the year (7.24 and 7.29 %). The phosphorus nutrition @ 80 kg h a 1 significant for protein content (7.52 and 7.40 %) for both the year. The residual sulphur of 80 kg ha-1 was significant for protein at second cut of 2002-03 (7.44 %) and nonsignificant in succeeding year. The chlorophyll content of fodder sorghum did not varied by the genotypes at first cut of both the year. The phosphorus nutrition @ 80 kg ha-1 reduced the total chlorophyll (1.592 and 1.591 mg g-1 tissue) during both the year. The sulphur nutrition was nonsignificant. The fodder sorghum at second cut did not affect the chlorophyll content. The residual phosphorus of 80 kg h a 1 and sulphur 40 kg S h a 1 significantly recorded higher total chlorophyll content during 2002-03 (1.146 and 1.083 mg g1 tissue) and 2003-04 (1.138 and 1.073 mg g-1 tissue) at second cut. The green fodder yield was obtained significantly higher in Ruchira (499.03 q ha1) during 2002-03 and non-significant in 2003- 04. The phosphorus nutrition @ 80 kg h a 1 recorded higher green fodder yield during 2002-03 and 2003-04 (509.0 and 550.3 q ha1) and sulphur @ 40 kg h a 1 during 2003-04 (555.3 q ha1) at first cut. The green fodder yield of fodder sorghum at second cut was significantly higher in Ruchira during both the year (179.7 and 179.1 q ha1). The residual phosphorus at second cut was nonsignificant for fodder sorghum. The dry fodder yield of Ruchira genotype was significantly higher in 2002-03 (150.9 q ha1) at first cut. The phosphorus application @ 80 kg ha-1 recorded highest dry fodder yield during both the year (152.7 and 154.3 q ha1) and 40 kg S h a 1 (150.0 and 154.4 q ha-1). The Ruchira genotype reported higher dry fodder yield at second cut (53.9 and 52.5 q ha1) during both the year of experimentation. The residual sulphur of 40 kg h a 1 are beneficial for dry fodder yield 52.7 and 51.5 q h a 1 during both the year. The phosphorus application @ 80 kg h a 1 recorded higher nitrogen uptake (177.0 and 178.8 kg ha1) and sulphur @ 40 kg ha1 (172.3 and 178.5 kg ha-1) during both the year of first cut. It was nonsignificant at second cut by genotypes and residual sulphur and phosphorus. The phosphorus uptake by fodder sorghum at first cut of both year was significant higher in M 35-1 (41.53 and 42.23 kg ha1). The phosphorus application @ 80 kg ha-1 reported high phosphorus uptake at both the year (43.67 and 44.69 kg ha1 ) and 40 kg S h a 1 during 2003-04 (43.39 kg ha1 ). At second cut residual sulphur of 80 kg ha-1 was found higher in phosphorus uptake (14.62 and 14.77 kg ha1 ) during both the year. The potassium uptake at first cut of fodder sorghum was higher in Ruchira during 2002-03 (198.3 kg ha-1) and 80 kg P205 ha-1 in both the year (201.1 and 200.8 kg ha1 ) . It was non-significant by sulphur nutrition. Ruchira fodder sorghum was significant for potassium uptake at second cut during both the year (68.9 and 66.2 kg ha1 ) . The residual sulphur of 40 kg ha-1 significantly increased the potassium uptake during 2002-03 (67.0 kg ha-1). The sulphur uptake was significant by the M 35-1 at first cut during both the year (29.29 and 29.76 kg ha1 ) , phosphorus @ 80 kg ha-1 (28.72 and 29.16 kg ha1 ) and 80 kg S ha-1 (30.54 and 30.61 kg ha-1). The sulphur uptake at first and second cut of fodder sorghum was significantly influenced by the genotype, phosphorus and sulphur nutrition. The results indicated that the application of 80 kg P2O5 h a 1 and 40 kg S ha-1 significantly reduced hydrocyanic acid and enhanced phenolics, neutral detergent fibre, acid detergent fibre, green fodder yield and dry fodder yield of fodder sorghum.
Subject: Soil Science and Agriculture Chemistry
Theme: SOIL SCIENCE AND AGRICULTURAL CHEMISTRY
These Type: Ph.D
Issue Date: 2008-01-01
Appears in Collections:Thesis

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