Dharminder, Dr.RANJAN, PRABHAT2023-05-092023-05-092021M/Agro/324/2019-20https://krishikosh.egranth.ac.in/handle/1/5810197163The field experiment entitled “Exploring the efficiency of calcium and potassium thiosulphate on yield, nutrient uptake and quality of winter maize’’ was conducted during rabi season of 2019-20 at the Crop Research Centre of Dr. Rajendra Prasad Central Agricultural University, Pusa (Samastipur) Bihar. The soil of the experimental field was calcareous in nature containing 26 % free CaCO3, sandy loam in texture, alkaline in nature with a pH of 8.68 and EC 0.472 dS/m. The soil contained low in organic carbon (0.42 %), available nitrogen (218.4kg ha-1), while medium in available phosphorus (35.6 kg ha-1) and potassium (181.2 kg ha-1) sulphur (12.5 mg kg-1). The experiment was conducted in randomised block design with twelve treatment and replicated four times, taking the variety DKC-9081. The treatment comprised of twelve treatments viz. fertigation of RDF:150:75:60 N-P2O5-K2O kg/ha- Drip (T1), 150:75:54.5 N-P2O5-K2O kg/ha + 15 L KTS/ha- Drip (T2), 150:75:49 N-P2O5-K2O kg/ha + 30 L KTS/ha- Drip (T3), 150:75:38 N-P2O5-K2O kg/ha + 60 L KTS/ha- Drip (T4), 150:75:60 N-P2O5-K2O kg/ha + 15 L CaTS/ha- Drip (T5), 150:75:60 N-P2O5-K2O kg/ha + 30 L CaTS/ha- Drip (T6), 150:75:38 N-P2O5-K2O kg/ha + 30 L CaTS/ha + 30 L KTS/ha- Drip (T7), conventional recommended dose N-P-K 150:75:60 N-P2O5-K2O kg/ha- band application (T8), 150:75:38 N-P2O5-K2O kg/ha + 30 L KTS/ha- band application (T9), 150:75:60 N-P2O5-K2O kg/ha + 30 L CaTS/ha- band application (T10), 150:75:49 N-P2O5-K2O kg/ha + 60 L KTS/ha- band application (T11) and 150:75:38 N-P2O5-K2O kg/ha + 30 L CaTS/ha+ 30 L KTS/ha- band application (T12). Different treatments had significant influence on growth, yield attributes and yield of winter maize. The plant height, number of leaves plant-1, leaf area index, fresh weight of plant, dry matter accumulation, yield and yield attributes i.e., weight of cobs plant-1, weight of grains cob-1, weight of stones cob-1 and 100-grains weight were significantly influenced by different treatments. The growth attributes recorded at different stages of growth except 30 DAS was found to be significant due to different treatments. Experimental results indicated that treatment T7 (150:75:38 N-P2O5-K2O kg/ha + 30 L CaTS/ha + 30 L KTS/ha- Drip) produced higher plant height, number of leaves, leaf area index, fresh weight and dry matter accumulation at all the growth stages except 30 DAS, which were responsible for higher yield. There was no significant difference on number of cobs plant-1. However, weight of cobs plant-1 (150.1 g), weight of grains cob-1 (121.6 g), weight of stones cob-1 ((21.3 g) and 100-grain weight (32 g), were found significantly higher in treatment T7 (150:75:38 N-P2O5-K2O kg/ha + 30 L CaTS/ha + 30 L KTS/ha- Drip). Grain yield, stover yield and stone yield were significantly influenced by different treatments. The maximum grain yield (9063.0 kg ha-1), stover yield (7951.3 kg ha-1) and stone yield (1591.7 kg ha-1) were recorded under treatment T7 (150:75:38 N-P2O5-K2O kg/ha + 30 L CaTS/ha + 30 L KTS/ha- Drip). N and P content of grain and stover were non-significant due to different treatments. However, significantly higher K, Ca and S content of grain and stover were recorded with treatment T7 (150:75:38 N-P2O5-K2O kg/ha + 30 L CaTS/ha + 30 L KTS/ha- Drip). Significantly higher N, P, K, Ca and S uptake of grain and stover were recorded under T7 (150:75:38 N-P2O5-K2O kg/ha + 30 L CaTS/ha + 30 L KTS/ha- Drip) as compared to other treatments. Economics of different treatments clearly indicated that by virtue of higher grain yield, treatment T7 (150:75:38 N-P2O5-K2O kg/ha + 30 L CaTS/ha + 30 L KTS/ha- Drip) exhibited a higher gross return, net return and B:C ratio of ₹ 184163 ha-1, ₹ 124905 ha-1 and 2.11, respectively.EnglishThesis