RÉSUMÉ
The present study in pot experiments was conducted on “Influence of phosphorus and sulphur application on sesame yield in high P soils of Telangana”. The experiment was conducted in two different levels of high phosphorus status soils with 67.29 kg P2O5 ha-1 in soil 1 (S1) and 83.46 kg P2O5 ha-1 in soil 2 (S2). The treatments were taken in factorial completely randomized design in combination of five levels of phosphorus (P0-0, P25- 5, P50-10,P75-15 and P100-20 kg ha-1 of soil) four levels of sulphur (S0-0,S1-10,S2-20 and S3-30 kg ha-1 of soil). A significant increase in seed yield of sesame crop could be achieved by combined application of P75 (15 kg P2O5 ha-1) + S20 (20 kg S ha-1) in high available phosphorus soils. Among the various treatments tested within two high P soils, in S1 maximum seed (11.89 g pot-1) and stalk yield (21.98 g pot-1) was obtained with combined application of P75 (15 kg P2O5 ha-1) + S20 (20 kg S ha-1) while in S2 maximum seed (11.92 g pot-1) and stalk yield (21.89 g pot-1) was obtained with combined application of P50 (10 kg P2O5 ha-1) + S20 (20 kg S ha-1).
RÉSUMÉ
A field experiment was carried out at College farm, College of Agriculture, Professor Jayashankar Telangana State Agricultural University (PJTSAU), Hyderabad, Telangana during rabi season 2022 to study the effect of drip irrigation and fertigation levels on yield attributes and yield of marigold. The results revealed that the drip irrigation scheduled at 1.2 Epan recorded significantly higher number of flowers per plant (55.3), flower diameter (5.8 cm), flower fresh weight per plant (557.2 g), flower dry weight per plant (101.9 g) and flower yield (12.11 t ha-1) than 1.0 Epan and 0.8 Epan. Whereas among the fertigation levels, 125% recommended dose of NK recorded significantly higher number of flowers per plant (53.7), flower diameter (5.6 cm), flower fresh weight per plant (538.4 g), flower dry weight per plant (92.8 g) and flower yield (11.48 t ha-1) than 100%RDF and 125%RDF.
RÉSUMÉ
The trilobite larvae of C. rotundicauda were tested to determine their colour preference and light sensitivity until their first moulting (25 days post hatching) under laboratory conditions. Maximum congregation size of the trilobite larvae was found in the white zone respectively where (n= 12) followed by yellow (n= 8) and orange (n= 8), which showed the larval preference for lighter zones. Morisita’s index calculation showed a clumped/aggregated distribution (yellow, blue, orange and white) and uniform/hyper dispersed distribution (green, red and black) for various colours tested. Trilobite larvae showed least preference for brighter regions while tested in the experiment [black; (n=4) and red; (n=5)]. Experiments done to determine the light sensitivity of trilobite larvae showed that the larvae had more preference towards ultraviolet lights. The maximum congregation size of 38.8 and 40.7% of the larvae was encountered under ultraviolet light, when the light sources were kept horizontal and vertical, respectively. Overall, results suggested that the trilobite larvae of C. rotundicauda, preferred light source of shorter wavelengths (UV light) and colours of lighter zone (white, yellow, orange), which might be due to their adaptation to their natural habitat for predator avoidance, prey selection and water quality.