Seed may be considered as the most important and vital factor which is structurally a fertilized matured ovule. Seed priming, the process of controlled hydration of seeds up to a level that permits pregerminative metabolic activity of seed to proceed, but prevents actual emergence of the radicle. Seed priming is a simple, safe and effective technology which can be easily adopted by resource-poor farmers and moreover it has the potential to benefit such farmers in a numbers of other ways. Commercialisation of the seed priming technology has been expanded rapidly now a day. Seed priming is a popular, low cost and commercially used technique. For combating biotic and abiotic stress in crops and alleviating the detrimental effects of stress without much affecting its fitness seed priming emerges as a promising technology. Extensive study was done by various workers using different seed priming techniques viz. hydro-priming, halo-priming, osmo-priming, matrix priming, hormonal priming, nutri-priming, biopriming etc.
In the developing world rice (Oryza sativa L.) is the most important cereal crop and it is the staple food of over half of the world’s population. More than 90% of rice is produced and consumed in Asia. Extensive use of chemical fertilizers causes a great alteration in soil physiology and reduce the soil fertility, damages the flora and causes soil erosion and reduce NUE (Nutrient Use Efficiency). A field experiment was conducted in the year 2019-20 in summer rice at the institutional farm, Jaguli, B.C.K.V, Nadia, West Bengal on “Effect of different nano-fertilizer on growth and yield of summer rice” to study the effect of nano-fertilizers on growth, yield and yield components of summer rice. In case of plant height and dry matter accumulation (g/m2), the highest value was observed in T8 treatment (50% Recommended dose of Zn + 100% N - P - K+ Foliar application of Nano Zn). In LAI also the same trend follows as like DMA. Maximum grain yield and straw yield was recorded from T8 treatment (5.61 t/ha and 6.18 t/ha respectively) followed by T9 treatment. It was observed that highest B:C ratio was also seen in T8 treatment followed by T9 and T3 treatment. From the economic analysis of different treatments, it was observed that highest B:C ratio was seen in T8 treatment followed by T9 and T3 treatment. So, T8 treatment is beneficial in economical aspect also.
Water and nitrogen fertilizer are the two important inputs for rice cultivation. A field experiment was carried out in split plot design, with three water management treatments, irrigation at (i) 75 % Cumulative Pan Evaporation (CPE), (ii) 100% CPE, (iii) 125% CPE in the main plot, and four nitrogen management strategies, (i) 100% nitrogen applied through chemical fertiliser, (ii) 75% through chemical fertiliser + 2.5 t ha-1 vermicompost, (iii) 50% through chemical fertiliser + 5.0 t ha-1 vermicompost, and (iv) 25% through chemical fertiliser +7.5 t ha-1vermicompost in subplot. The grain yield, straw yield, water productivity, nutrient uptake and economics of aerobic rice were considerably affected by irrigation and nitrogen management. Crops receiving irrigation at 125% CPE had the highest grain yield (3618 kg ha-1), which was comparable to crops receiving irrigation at 100 % CPE. Regardless of irrigation and nitrogen management, the straw yield of aerobic rice ranged from 4127 to 5092 kg ha-1. The highest total NPK uptake by grain was recorded with nitrogen at 100 % N through fertiliser (N1), which was significantly greater than what was obtained from other nitrogen treatments and irrigation management at 100 % CPE (I100) and 125 % CPE (I125) was significantly better than irrigation at 75 % CPE (I75). Irrigation management at 125 % CPE yielded the highest gross return, net return, and B: C ratio of aerobic rice, which was comparable to 100 % CPE and 100 % N through fertiliser, 75 % N through fertiliser + 2.5 t ha-1 vermicompost, and significantly higher than other nitrogen treatments.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.