Effect of Integrated Weed Management Practices on Growth, Physiology and Yield of Direct Sown Finger Millet (Eleusine coracana L.)

To determine “Effect of integrated weed management practices in direct sown finger millet”. The field experiment was conducted during rabi 2022 at South Farm, Karunya Institute of Technology and Sciences, Coimbatore. The soil of the experimental field was sandy clay loam in texture, pH 6.9, level of organic content (0.37%), available N (336 kg ha-1), P (91 kg ha-1) and K (261 kg ha-1). The experiment was laid out in completely randomized block design. T1 (PE pendimethalin @ 0.75 kg ha-1 8 DAS + Hand weeding (HW) @ 35 DAS), T2 (PoE 2,4-D @ 2 kg ha-1 40 DAS + Hand weeding (HW) @ 35 DAS), T3 (PE pretilachlor @ 0.75 kg ha-1 8 DAS + Hand weeding (HW) @ 35 DAS), T4 (PoE 2,4-D @ 2 kg ha-1 40 DAS + Twin wheel hoe weeding (TWHW) @ 30 DAS), T5 (PE pendimethalin @ 0.75 kg ha-1 8 DAS + Twin wheel hoe weeding @ 30 DAS), T6 (PE pretilachlor @ 0.75 kg ha-1 8 DAS + Twin wheel hoe weeding (TWHW) @ 30 DAS), T7 (Hand weeding (HW) @ 25 and 40 DAS), T8 (Twin wheel hoe weeding (TWHW) @ 25 and 40 DAS), T9 (Hand weeding (HW) @ 25 DAS + Twin wheel hoe weeding (TWHW) @ 40 DAS), T10 (Unweeded control). The result shows that the weed control practices significantly decreases weeds also higher control of weed infestation was observed in PE pretilachlor @ 0.75kg ha-1 8 DAS + Twin wheel hoe weeding @ 30 DAS. The maximum dry matter production, CGR, RGR, NPK uptake and grain yield (2368 kg ha-1) were also found higher in PE pretilachlor @ 0.75kg ha-1 8 DAS + Twin wheel hoe weeding @ 30 DAS. From this study it is concluded that application of pre emergence herbicide pretilachlor along with twin wheel hoe weeder increases the crop growth and yield.

Effect of System of Rice Intensification Practices in Increasing the Yield of Traditional Varieties of Rice

The experiment to evaluate the “Effect of SRI (System of Rice Intensification) practices in increasing the yield of traditional varieties of rice was carried out in the samba season of 2022 at south farm in Karunya Institute of Technology and Sciences, Division of Agronomy, Coimbatore. The soil of the experimental field was clay loam, moderately drained low in available N 212 kg ha-1), high (17.4 kg ha-1) medium K (410 kg ha-1) level of organic carbon (0.73%). The experiment was laid in Randomized Block Design and replicated three times. The treatments consisted of 7 rice varieties namely Illupaipoo samba (T1), Vaalan samba (T2), Mysore malli (T3), Thanga samba (T4), Thooyamalli (T5), Kitcheli samba (T6) and Bhavani (T7). The Data collected includes the yield attributes of different traditional rice varieties and was analyzed using analysis of variance. In the recent past, research on the country's rice crop has mostly been concentrated on increasing output, crop resilience to pests and diseases, and has given little attention to cultivating the traditional rice varieties or management options for better establishment and production. Therefore, it is crucial to conduct SRI technique experiments with a few chosen rice varieties in order to gather data and provide guidance on the best variety to choose for the production of high-quality rice and its commercialization The results showed that the variety Thanga samba (T4) produced significantly higher grain yield of 6564 kg ha-1 and registered a yield increase ranging from 12 to 63 per cent over the other varieties under evaluation. The highest net return of 176472 ₹ ha-1 with B:C ratio of 2.6 was realised under the variety Thanga samba (T4). In conclusion the variety Thanga samba (T4) performed better under SRI method of cultivation.