Background: Pre-sowing seed priming and foliar spraying with Plant Growth Regulators is an easy, low cost and low risk technique and also an alternative approach recently used to mitigate the effect of abiotic stresses in agricultural production.Methods: Seeds of Mung bean var. GAM-5 were primed and also foliar spraying at 30 DAS with CaCl2 2% and 1%, Cycocel 500, 1000 ppm, NAA 25, 50 ppm during summer season of 2015-16 and 2016-17.Result: The results indicated a significant improvement in morpho-physiological traits, growth parameters, biochemical constituents and thereby yield due to the application of PGRs. Seed priming with 2% CaCl2 followed by 1% foliar spraying at 30 DAS (T11) significantly improved most of morpho-physiological parameters viz., plant height, number of branches per plant, days to 50% flowering, maturity, leaf area, chlorophyll content, seed protein content, number of pods per plant, number of seeds per pod, test weight, pod length, yield per plant, yield per hectare, harvest index in green gram followed by the seed priming with Cycocel 1000 ppm followed by foliar spraying at 30 DAS (T13) and seed priming with NAA 50 ppm followed by foliar spraying at 30 DAS (T15). The treatment T11 was more efficient.
A field experiment was carried out at Central Sugarcane Research Station Padegaon, during 2011-12 to 2013-14 to assess the crop weather relationship in preseasonal sugarcane (var. CoM 0265). Treatments were comprised of nine planting dates at 15 days interval starting from 15th October to 15th February. The results indicated that the early planting produced highest cane and CCS (commercialcane sugar) yield. Significantly the highest brix (21.3), sucrose (20.4%), purity (96.8%) and CCS (14.6%) were observed under early planting of sugarcane on 15th October, which was at par with the treatment 01st November, 15th November, 1st December planting. At harvest cane and CCS yield of sugarcane was positively correlated with maximum temperature, wind velocity and pan evaporation. Significantly positive correlation of millable cane, weight per cane was observed with cane and CCS yield.
The recent impact of climate change influencing insect-pest incidence in important dry land crops revealed that incidence of insect-pests during last decade viz., sorghum shoot fly (5-13% dead hearts), stem borer (2-10% dead hearts), delphacids (4-5 to 12-15 Nos./ shoot/plant) increased, respectively. Sunflower bud necrosis was increased from 4-5% to 9-10% whereas on safflower the occurrence of three new emerging pests viz., leaf eating caterpillar, stem borer and stem fly was also noticed to the extent of 15-18% infestation. Castor semi-looper and capsule borer were increased respectively @ 3-6 larvae/leaf/plant to 9-10 larvae/leaf/plant and 8-10% capsule damage to 12-15% capsule damage. The congenial climate condition required for the survival and development of sorghum shoot fly is min. 22 0 C and max. 37 0 C temp., RH-I 44% and RH-II 93%, stem borer min. 19 0 C and max. 36 0 C temp., RH-I 38% and RH-II 94%, delphacids min. 18 0 C and max. 30 0 C temp., RH-I 35% and RH-II 75%, safflower aphid min. 10 0 C and max. 28 0 C temp., RH-I 40% and RH-II 60%, safflower caterpillar min. 19 0 C and max. 33 0 C temp., RH-I 50% and RH-II 80%, chickpea pod borer min. 20 0 C and max. 35 0 C temp. with cloudy and hot weather, sunflower bihar hairy caterpillar min. 22 0 C and max. 34 0 C temp, pigeon pea pod borer min. 30 0 C and max. 33 0 C temp. and castor semi-looper min. 22 0 C and max. 35 0 C temp., RH-I 50% and RH-II 73%.
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