Productivity and soil health of rice based cropping systems under organic management (Record no. 161926)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 04106nam a2200169 4500 |
| 082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER | |
| Classification number | 630 |
| Item number | RAJ/PR |
| 100 ## - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Rajanand Hiremath |
| 245 ## - TITLE STATEMENT | |
| Title | Productivity and soil health of rice based cropping systems under organic management |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Place of publication, distribution, etc | Vellanikkara |
| Name of publisher, distributor, etc | Department of Agronomy, College of Horticulture |
| Date of publication, distribution, etc | 2018 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 148p. |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | PhD |
| 520 3# - SUMMARY, ETC. | |
| Abstract | The study entitled “Productivity and soil health of rice based cropping systems under organic management” was conducted in the Department of Agronomy, College of Horticulture, Vellanikkara during 2015-2017 to find out the suitable rice based cropping system under organic management. The experiment was laid out in randomized block design with three replications. Rice was grown under four different cropping systems for two consecutive years with and without foliar spray of liquid organic manures (LOMs). The rotations followed were rice-rice-njavara rice, rice-rice-salad cucumber, rice-rice- vegetable cowpea, rice-rice-amaranthus and rice-rice-fallow. The management practices were followed as per the Package of practices recommendations: (Ad hoc) for organic farming: Crops of the Kerala Agricultural University. Jeevamrurtham, Panchagavyam, green leaf extract and fish amino acid were the liquid organic manures sprayed at 15 days intervals after transplanting. The growth and yield parameters of all the crops were found to be better with the application of liquid organic manures. All the crops performed well in the second year due to the significant effect of crop diversification, residual effect of manures applied for the preceding crop and the improvement in soil health. There was significant reduction in the number of weeds, pests and diseases associated with rice due to crop rotation under organic management. Rice-rice-salad cucumber with and without LOMs produced significantly higher rice equivalent yield (29.58 and 24.67 t ha-1 respectively) and system productivity (81.03 and 67.58 kg ha-1 day-1 respectively) than rest of the sequences. Better sustainability yield index was recorded in rice-rice-vegetable cowpea with LOMs (0.26) followed by the same system without LOMs (0.20). With 300% cropping intensity, rice-rice-salad cucumber with and without LOMs recorded higher gross return (11,20,180/ 9,57,423 ₹ ha-1 respectively) and net return 237 (7,25,126/ 5,74,416 ₹ ha-1 respectively) compared to rice-rice-fallow with 200% cropping intensity (3,27,039 ₹ ha-1 gross return and 1,72,539 ₹ ha-1 net return). Among the sequences, the B:C ratio was found to be the highest in rice-rice-vegetable cowpea with and without LOMs (2.99 and 2.76 respectively). The soil characters were also significantly influenced by the treatments. The decreasing trend in bulk density is an indication of improvement in porosity and water holding capacity of the soil in the long run. Rice-rice-vegetable cowpea with LOMs recorded the highest organic carbon (1.46%), available N and P content (192.04 and 71.11 kg ha-1 respectively) while rice-rice-salad cucumber with LOMs had the highest available K content (332.78 kg ha-1). Total microbial biomass (bacteria, fungi and actinomycetes) and dehydrogenase activity were found to be the highest with rice-rice- vegetable cowpea with and without LOMs followed by rice-rice-salad cucumber with and without LOMs. The highest soil health index was registered by rice-rice-vegetable cowpea with and without LOMs (3.34 and 3.00 respectively) followed by rice-rice- amaranthus. The study revealed that foliar application of liquid organic manures enhanced the soil health and productivity of rice as well as other crops grown in rotation. Rice-rice- salad cucumber was found to be the best rice based cropping system with maximum net return, whereas rice-rice-vegetable cowpea system improved the soil physical, chemical and biological properties and thus sustained the soil health. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Agronomy |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Usha K E (Guide) |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | http://krishikosh.egranth.ac.in/handle/1/5810145137 |
| 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 | Reference Book | KAU Central Library, Thrissur | KAU Central Library, Thrissur | Theses | 2018-09-27 | 630 RAJ/PR | 174314 | 2018-09-27 | Theses |