Integrated nutrient management in sofghum (Sorghum bicolor L. Moench) for AEU 8 (Record no. 290687)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 05401nam a22001937a 4500 |
| 082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER | |
| Classification number | 630 |
| Item number | ARA/IN PG |
| 100 ## - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Arathy P Shaji |
| 245 ## - TITLE STATEMENT | |
| Title | Integrated nutrient management in sofghum (Sorghum bicolor L. Moench) for AEU 8 |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Place of publication, distribution, etc | Vellayani |
| Name of publisher, distributor, etc | Department of Agronomy, College of Agriculture |
| Date of publication, distribution, etc | 2023 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | xi, 98p. |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | MSc |
| 520 3# - SUMMARY, ETC. | |
| Abstract | The study entitled “Integrated nutrient management in sorghum (Sorghum bicolor L. Moench) for AEU 8” was undertaken at College of Agriculture, Vellayani during 2020-2022 to standardize the integrated nutrient management practices for grain sorghum and to work out the economics of cultivation. The field experiment carried out during December 2021 to April 2022, was laid out in randomized block design with (3 x 3) +1 treatments replicated thrice, at Instructional Farm, Vellayani delineated under AEU 8.The crop variety used in the study was SPV 2217. The treatments comprised three levels of biofertilizers (B) [b1 - No biofertilizer application, b2 - PGPR Mix I liquid formulation (5 %), b3 - PGPR Mix I powder formulation] and three levels of N substitution with organic sources (S) [s1 - 25 % N substitution through poultry manure, s2 – 25 % N substitution through vermicompost, s3 - 25 % N substitution through FYM] and KAU POP as the control. The recommended dose of nutrients was given at the rate of 45:25:25 kg NPK ha-1 along with FYM (5 t ha-1) as per KAU POP recommendation. Nitrogen was partially substituted through organic manures on N equivalent basis as per the treatments. P and K were given through chemical sources as basal. Organic manures for N substitution were given as basal dose. The chemical source of N was applied in two equal splits, half as basal and the rest 30 days after sowing. Both liquid and powder formulations of PGPR Mix I developed from the Department of Agricultural Microbiology, College of Agriculture, Vellayani, were used as biofertilizers in the study. Seed treatment was done with PGPR Mix I (at the rate of 30 g kg-1 seeds) followed by its soil application at the rate of 150 g m-2 area (dry cow dung and PGPR Mix 1 in 50:1 proportion -w/w) at planting, 15 days after emergence (DAE) and 30 DAE in b3. The liquid formulation of PGPR Mix I (5 %) was given as seed treatment, followed by drenching (500 mL m-2) at collar region at 15 and 30 DAE. The salient findings of the study are abstracted below. Among different levels of biofertilizer application, significantly taller plants and more number of leaves per plant were recorded with b2 (PGPR Mix I liquid formulation - 128 5 %) at 60 and 90 DAE, whereas at harvest taller plants were recorded with b3 (PGPR Mix I powder formulation). The leaf area per plant and LAI at 30 and 60 DAE, rooting depth, root volume and dry matter production at harvest (8508 kg ha-1) were significantly higher in b2. The lowest number of days to 50 per cent flowering (78.78 days) and highest chlorophyll content at 60 DAE were recorded in b2. Yield attributes like panicle length (20.48 cm), number of grains per panicle (2460.94) and grain weight per panicle (62.45 g) and grain yield (3141 kg ha-1) and green stover yield (16106 kg ha-1) were higher with b2. Crude protein content of the grain (8.48 per cent) and plant N, P and K uptake (91.77 kg ha-1, 55.50 kg ha-1 and 196.16 kg ha-1 respectively) were the highest with b2. The available soil P status was also significantly higher under treatment b2. Among N substitution with organic sources, significantly taller plants and more number of leaves per plant were recorded with s1 (25 % N substitution through poultry manure at 60 DAE). Leaf area and LAI at 30 and 60 DAE, root volume, DMP at harvest (8119 kg ha-1), number of grains per panicle (2035.21) and grain yield (3023 kg ha-1) were significantly higher in s1. Rooting depth and grain weight per panicle (48.49 g) were superior in s2 (25 % N substitution through vermicompost). The uptake of N and P were significantly higher in s1. The interaction effect was significant only in the case of plant height and chlorophyll content at 60 DAE, root volume and grain yield. The treatment combination b3s1 produced the taller plants which was on par with b2s1 and b2s2. Significantly higher root volume and grain yield were recorded in the treatment combination b2s1 and the highest chlorophyll content was recorded in b2s3. The highest net income (₹ 52060 ha-1) and B:C ratio (1.99) were recorded in b2s1. For getting higher yield, higher net returns from sorghum cultivation and also for soil health sustenance, application of FYM at the rate of 5 t ha-1 as basal and NPK at the rate 45:25:25 kg ha-1 wherein 25 per cent N dose is substituted through poultry manure was found to be effective. This combined with the application of PGPR Mix I liquid formulation (5 per cent) as seed treatment and drenching at collar region at 15 and 30 129 DAE can be recommended as an INM practice for sorghum in AEU 8. The KAU POP practice (control) was also found to be equally effective as the INM practices with respect to the growth and yield of sorghum. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Agronomy |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Sorgghum |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Sorghum bicolor L. Moench |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Nutrient management |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Rajasree G (Guide) |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | |
| Item type | Theses |
| Not for loan | Collection code | Permanent location | Current location | Shelving location | Date acquired | Full call number | Barcode | Date last seen | Koha item type |
|---|---|---|---|---|---|---|---|---|---|
| Not For Loan | Thesis | KAU Central Library, Thrissur | KAU Central Library, Thrissur | Technical Processing Division | 2023-10-06 | 630 ARA/IN PG | 175813 | 2023-10-06 | Theses |