Maize is the third most important crop in India after rice and wheat (Al-Swailem et al., 2005;Yadav et al., 2014). It is under cultivation across the globe, including tropical, subtropical and temperate regions, from sea level to 3000 m above sea level. The Composition per 100 g of edible portion of maize (dry) is Protein 11.1g, Fat 3.6 g, Fibre 2.7 g, Calories 342, Amino acids 1.78 mg, Carbohydrates 66.2 g, Calcium 10 mg, Iron
Soil is one of the most important vital natural resource, defends the life supporting system of a country and socio-economic development of its people. More than ever before, a renewed attention is being given to soil due to rapid declining land area for agriculture, declining soil fertility and increasing soil degradation, wrong land policies and imbalance use of inputs (Kanwar, 2004). All the above factors call for a paradigm shift in research away from maximum crop production to the sustainability of crop production system without degradation of soil health and environmental quality. Soils differ greatly in their morphological, physical, chemical and biological characteristics. Since these characteristics affect the response of soil to management practices it is necessary to have information about these characteristics of each category of soil. Soil fertility is one of the important factors controlling yields of the crops. Within a soil, nutrient variability exists depending upon the hydrological properties of the soil and cropping system. In the present study 366 soil samples were collected from 21 gram panchayats and were analyzed. The soil samples were collected from rice-wheat cropping sequence. Analysis of soil samples revealed that 82 per cent samples were medium in organic matter content, 100 per cent soil samples were deficient in available nitrogen, while 92 per cent P and 100 per cent K samples were in medium range respectively. Among the micronutrients tested copper and iron were in sufficient range while manganese and zinc were deficient in soil.
An experiment was conducted on 15 coloured mango cultivars at Bihar Agricultural University, Sabour, Bihar during the year 2020-2021 to identify suitable coloured mango cultivars for Bihar conditions. Arunika and Kingphon were found early in panicle emergence and anthesis while much delayed panicle emergence and anthesis were observed in Sabri. The maximum length of the panicle was measured in Kingphon (43.22 cm) whereas; the minimum was in Sabri (17.76 cm). The minimum flowering duration was recorded in Kent (9.20 days) with statistically at par value in Sensation, Osteen and Sabri. While the longest flowering duration was observed in Arunika (22 days). Maya was topped (86.50 %) in the list for the flowering intensity which was found statistically at par with Kensington (72.50 %). Maximum number of fruit set per panicle was counted in Tommy Atkins (21.10) which was statistically at par with Sensation (20.60). Early fruit maturity and the highest number of fruits per plant at the maturity stage were found in Pusa Pratibha. The highest fruit weight, volume, pulp percentages and pulp/stone ratio were observed in Osteen (505.71g, 500.05 ml, 73.40% and 6.98 respectively) followed by Lily. Pusa Pitambar yielded the highest number of fruits per m3 canopy volume (2.34) with statistically at par results in Kent (1.77). The maximum TSS/Acid blend was assessed in Sensation (99.25). The total sugar content (16.48%) was found in Pusa Pratibha which was statistically at par with Pusa Surya (15.90%) and Sabri (15.47%). The total carotenoid content was estimated at maximum in Pusa Pitambar (7.19 mg 100-1 g FW). In Ambika, the highest ascorbic acid was estimated (55.00 mg 100-1 g pulp). The cultivars like Pusa Shrestha, Pusa Pratibha, Pusa Surya, Lily, Ambika and Arunika had shown delightful colour with higher yields, especially in Pusa Pitambar.
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