Effect of foliar spray of micro-nutrients on the growth of mulberry and its impact on the silkworm, Bombyx mori L. rearing
| dc.contributor.advisor | Noor-ul-Din | |
| dc.contributor.author | Sheetal Rani | |
| dc.date.accessioned | 2024-09-27T06:36:19Z | |
| dc.date.available | 2024-09-27T06:36:19Z | |
| dc.date.issued | 2024 | |
| dc.description.abstract | Investigation on “Effect of foliar spray of micro-nutrients on the growth of mulberry and its impact on the silkworm, Bombyx mori L. rearing” was carried at the experimental farm of College of Temperate Sericulture, SKUAST-Kashmir, Mirgund which is located at 340.17N latitude and 740.17E longitude at an altitude of 1585 meters above mean sea level. Goshoerami mulberry variety was taken for this experiment. The present investigation was carried under two experiments, i.e. “Influence of foliar spray on mulberry qualitative and quantitative parameters with Randomized Block Design (RBD)” and “Influence of foliar spray on silkworm rearing and cocoon parameters with Complete Randomized Design (CRD)”, during 2017 and 2018 with 17 different treatments including one control, where no micronutrient spray was used. Foliar spray of liquid formulations was done twice, first on 30th day after sprouting/pruning of mulberry and second 15 days after first spray at the rate of 600 litres of formulation/hectare/spray. Rearing was conducted as usual up to 3rd stage. From day 1st of 4th age up to seriposition the worms were reared on treated leaves as per the experiment details. Iron sulphate, zinc sulphate, manganese sulphate and copper sulphate were used as foliar sprays for supplementing Fe, Zn, Mn and Cu respectively. Iron, zinc, manganese and copper was sprayed at 4 different concentrations each viz., 0.1%, 0.2%, 0.3% and 0.4%. Soil analysis was conducted at initial stage, which revealed that pH, electrical conductivity, exchangeable calcium and exchangeable magnesium increased with soil depth of (0-30cm to 30-60cm) with values of (7.28-8.00), (0.21-0.23dSm-1), (3044.99-3995.40 ppm) and (900.06-964.56 ppm) respectively. It further revealed that organic carbon, nitrogen, phosphorus, potassium, sulphur, iron, zinc, manganese and copper decreased with soil depth (0-30cm to 30-60cm) with values of (2.09-1.62 %), (113.09-60.23 ppm), (13.00-7.57 ppm), (133.59-82.50 ppm), (12.26-10.00 ppm), (8.99-6.00 ppm), (0.58-0.52 ppm), (11.60-7.99 ppm) and (2.47-1.20 ppm) respectively. Regarding the plant parameters, supplementing leaf with Fe, Zn, Mn and Cu through foliar spray had a significant effect on many mulberry growth and yield parameters. Maximum values for length of longest branch, average branch length, number of leaves per plant, fresh weight of 100 leaves, leaf yield, moisture content and crude protein content of (120.118 cm), (102.890 cm), (1022), (439.117 g), (4.957 kg), (78.653 %) and (17.719 %) during spring and (123.333 cm),(105.333 cm), (785), (596.550 g), (5.216 kg), (76.060 %) and (16.072%) during autumn, were recorded in T12(Mn@0.4%) respectively. Higher content of iron (254.140ppm), zinc (32.950 ppm), manganese (104.825ppm) and copper (16.245ppm) in mulberry leaves were recorded in treatments with higher levels of foliar spray viz., T4=Fe@0.4%, T8=Zn@0.4%, T12=Mn@0.4% and T16=Cu@0.4%respectively. Silkworm larvae were fed on treated leaf and all biological and economic parameters were recorded. Results obtained indicated that foliar spray of Fe, Zn, Mn and Cu had a significant effect on many rearing parameters. Maximum weight of 10 mature larvae, Cocoon yield/10000 larvae by number, Cocoon yield/10000 larvae by weight, Pupation rate, Single cocoon weight, Single shell weight and Shell ratio % age with values of (55.708g), (9116), (19.99kg), (91.720%), (2.17g), (0.49g) and (22.58 %) respectively, were recorded in T12=Mn@0.4%.It further revealed that highest values for average filament length, raw silk %age and denier with values of (1102 m), (15.371%) and (2.995) respectively, were recorded in T12=Mn@0.4%.Supplementing leaf with Fe, Zn, Mn and Cu through foliar spray had a significant effect on many mulberry and rearing parameters. Foliar spray of T12=Mn@0.4% had resulted in increased leaf yield and improvement in rearing parameters, suggesting the need for use of manganese @ 0.4% in conjunction could pave way for increased cocoon crop. | |
| dc.identifier.uri | https://krishikosh.egranth.ac.in/handle/1/5810215078 | |
| dc.keywords | Mulberry | |
| dc.keywords | foliar spray | |
| dc.keywords | micronutrients | |
| dc.keywords | rearing | |
| dc.keywords | yield | |
| dc.keywords | Bombyx mori .L | |
| dc.keywords | Sericulture | |
| dc.language.iso | English | |
| dc.pages | 129 | |
| dc.publisher | SKUAST Kashmir | |
| dc.research.problem | Effect of foliar spray of micro-nutrients on the growth of mulberry and its impact on the silkworm, Bombyx mori L. rearing | |
| dc.sub | Sericulture | |
| dc.subject | Mulberry | |
| dc.subject | foliar spray | |
| dc.subject | micronutrients | |
| dc.subject | rearing | |
| dc.subject | yield | |
| dc.subject | Bombyx mori .L | |
| dc.subject | Sericulture | |
| dc.theme | Effect of foliar spray of micro-nutrients on the growth of mulberry and its impact on the silkworm, Bombyx mori L. rearing | |
| dc.these.type | Ph.D | |
| dc.title | Effect of foliar spray of micro-nutrients on the growth of mulberry and its impact on the silkworm, Bombyx mori L. rearing | |
| dc.type | Thesis |