RBSE SS Agricultural Biology case studies
RBSE SS Agricultural Biology · Put your knowledge to work in context.
RBSE Senior Secondary Agricultural Biology is the Class 12 elective offered by the Rajasthan Board of Secondary Education for students in its agriculture stream. It suits candidates who intend to continue into agriculture, horticulture, dairy, or veterinary study, or who plan to return to a family farm and want the science behind the practices. The RBSE SS Agricultural Biology case studies are 5 cases and about 4,792 words.
1Midday Photosynthesis Collapse in Irrigated Wheat at Anthesis
HD-3086) on a sandy loam in a semi-arid block is at 50% anthesis in the second week of March. The block received 60 mm of rain 12 days ago and has not been irrigated since.
912 words, about 5 min2Testing Independent Assortment with Too Few F2 Plants
A breeder working with a self-pollinated pulse crosses two true-breeding parents differing for plant height (tall vs dwarf) and flower colour (purple vs white). All F1 plants are tall with purple flowers.
905 words, about 5 min3Seed Rate and Sowing Decision for Rainfed Pearl Millet
A farmer in a 550 mm annual-rainfall district plans 1.0 ha of pearl millet (bajra) on a medium black soil. He has a 90-day hybrid with a 1000-grain weight of 9.0 g and a seed lot with a laboratory germination of 82%.
929 words, about 5 min4Liming and Fertilizer Planning on an Acid Sandy Clay Loam
A soil test for a 1 ha field (0-15 cm, bulk density 1.45 g/cm3) going into maize-wheat reads: pH 5.3 (1:2.5 soil:water), organic carbon 0.36%, available N 145 kg/ha (low), available P 9 kg P2O5/ha (low), available K 165 kg K2O/ha (medium), CEC 7.8 cmol(p+)/kg, EC 0.11 dS/m, exchangeable Al 1.9 cmol(p+)/kg, texture sandy clay loam. The recommended dose for maize is 120:60:40 kg N:P2O5:K2O per ha.
1,055 words, about 5 min5Brown Planthopper Resurgence after Repeated Neonicotinoid Sprays in Rice
A 0.4 ha block of a long-duration rice variety is at maximum tillering. The farmer has sprayed imidacloprid 17.8 SL four times in 30 days and lambda-cyhalothrin once, after finding a 'hopper burn' patch in a corner.
991 words, about 5 min