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TY - JOUR AU - Dadhich, Sarita AU - Pandey, Shalini AU - Kumawat, M M AU - Sundria, M M PY - 2023/09/26 Y2 - 2025/09/23 TI - Biology of aphid, Aphis gossypii Glover in cumin: Biology of cumin aphid JF - Journal of Spices and Aromatic Crops JA - J Spices Arom Crops VL - 32 IS - 1 SE - Research Articles DO - 10.25081/josac.2023.v32.i1.8310 UR - https://www.updatepublishing.com/journal/index.php/josac/article/view/8310 SP - 106-111 AB - <p>The experiment on biology of aphid, <em>Aphis gossypii</em> infesting cumin crop was conducted under ambient conditions in the Entomology Laboratory, Agricultural Research Station, Mandor, Jodhpur. The study was conducted on potted plants of cumin variety GC-4. The aphid, <em>A. gossypii</em> nymphs were moulted four times before attaining the adult stage. The mean body length, width, antennal length and cornicle length of first, second, third and fourth instar nymphs were 0.50 ± 0.04, 0.28 ± 0.03, 0.28 ± 0.02 and 0.036 ± 0.01 mm; 0.90 ± 0.04, 0.38 ± 0.04, 0.40 ± 0.03 and 0.065 ± 0.01 mm; 1.11 ± 0.05, 0.49 ± 0.04, 0.54 ± 0.03 and 0.095 ± 0.01 mm and 1.31 ± 0.06, 0.65 ± 0.05, 0.64 ± 0.04 and 0.175 ± 0.01 mm, respectively. The mean body length, width, antennal length and cornicle length of adult aphid were 1.68 ± 0.06, 0.71 ± 1.53, 0.88 ± 0.02 and 0.266 ± 0.01 mm, respectively. The mean duration period of first, second, third and fourth instar nymphs were 1.30 ± 0.42, 2.05 ± 0.62, 2.40 ± 0.52 and 1.45 ± 0.45 days, respectively. The total nymphal duration was 7.75 ± 1.61 days. The mean longevity of adult aphid was 9.65 ± 1.75 days with an entire life span of 17.75 ± 2.91 days. The pre-reproductive, reproductive and post-reproductive periods were 1.35 ± 0.56, 7.20 ± 1.47 and 1.75 ± 0.71 days, respectively. The fecundity of the adult female was 24.45 ± 6.21 nymphs per female and the intrinsic rate of single female per day was an average of 4.80 ± 2.01 nymphs/day.</p> ER -