An experiment was conducted with fourteen ajwain genotypes at the Department of Plantation, Spices, Medicinal and Aromatic Crops, College of Horticulture, GKVK, Bengaluru, from October 2019 to April 2020 to document insect pest spectrum infesting ajwain. Out of the four insect pests recorded to invade ajwain, three are new pest records on ajwain except aphids. Only the aphid could differentiate the ajwain genotypes and rest three failed to do so due low pest pressure. Irrespective of genotypes, the mean pest population was 2.23 defoliators per plant (Thysanoplusia orichalcea and Archips sp. together), 4.98 per cent stem fly infestation which caused 1.73 per cent plant mortality per 3.8 m 2 plot and 61.85 aphids per 5 cm apical shoot. Aphid population was significantly least on genotype, Lam Sel-1 (43.37) and AA-2 (51.43) and was maximum on DAC-8 (71.90) which indicates scope for exploring the variability for aphid in crop improvement programme.
Jasmine being cultivated throughout India, its production/ largest area is concentrated in Tamil Nadu and Karnataka states. India stands next to Egypt and Morocco in Jasmine Concrete Production with >15 tons per annum. Modern Knowledge has accepted Jasmine as Persian origin, distribution pattern of 72 Jasminum spp. across India suggests, India may be the primary home which has its mention in the 500 BC Tamil literature and 7th to 3rd BCE Ramaynam mythological literature. In Karnataka, a number of Jasminum spp. are being cultivated throughout the state of which Mysuru Mallige, Udupi Mallige and Hadagali Mallige are being unique and are largely concentrated in the respective and adjoining districts. Government of India has registered these three jasmine cultivars with Geographical Indication tag under the Intellectual Property Rights. Though the demand for these GI crops is on increase, the area and production is declining slowly. Here is an attempt to compile the updated knowledge on genetic resources of Jasminum spp. with focus on the heritage crop of Mysuru- ‘Mysuru Mallige’.
A field study was implemented on performance of advanced potato hybrids for three consecutive years from 2015 to 2017 during Kharif season at HREC, Hassan, Karnataka under AICRP-Potato. A total of eight hybrids were evaluated by adopting RCBD with four replications. The tubers were planted at 60 cm x 20 cm spacing with soil application of RDF (75:75:100 kg NPK/ha) and FYM (25 t/ha) as per the package of practices of UHS, Bagalkot. The hybrids such as AICRP-P-15, AICRP-P-16, AICRP-P-17, AICRP-P-18 AICRP-C-13, AICRP-C-17, AICRP-C-20 and AICRP-C-24 were adopted for evaluation studies. All hybrids were tested for marketable and total tuber yield during harvest at 75 and 90 days after planting. The pooled data of three years indicated that, hybrid AICRP-P-16 documented highest marketable tuber yield of 15.57 and 20.78 t/ha, total tuber yield of 18.18 and 24.42 t/ha at 75 and 90 DAP, which was on par with AICRP-C-24 (15.01 & 17.76 t/ha) of marketable tuber yield and (17.27& 20.02 t/ha) of total tuber yield at 75 and 90 DAP, respectively. Therefore, it was concluded that hybrid AICRP-P-16 was high yielding and found suitable for cultivation in Southern Dry Zone of Karnataka during Kharif season.
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