Abstract
It is well known that the overuse of inorganic fertilizers has catastrophic impacts on forms of life and the environment. In chemical fertilizers, Nitrogen is one of the main elements that has a high leaching potency which leads to pollute both surface and groundwater resources. This study was carried out to identify the best organic and inorganic fertilizer combination that gives the highest yield in MI-Green. The treatments are 3 kg/pot cow dung (control 1), (T1), 2 kg/pot cow dung (control 2) (T2), 2 kg/pot cow dung + foliar urea spray (T3), 2 kg/pot cow dung + urea soil application (T4), 3 kg/pot cow dung+ foliar spray (T5) and 3 kg/pot cow dung + Urea soil application (T6). Results disclosed a significant effect (p<0.05) on growth and yield in T5. Hence, it can be concluded that 3kg/pot cow dung+ foliar spray combination can be used to improve the growth and yield of MI-Green chilli.
Highlights
The Sri Lankan government banned the import of synthetic fertilizers and agrochemicals recently (Beillard et al, 2021)
There was low soil fertility is in a large part of the lands in Sri Lanka too; mainly because of the high yielding varieties, the application of excessive inorganic fertilizers and inadequate nutrient replacement; while over-fertilization results in the accumulation and leaching of nitrate residuals that directly contribute to the pollution of ground water apart from the low soil fertility (Biosci et al, 2012)
Considering the above facts; the objectives of this study were meant to identify the best combination of urea and soil application of cow dung as an amendment on MI-Green chilli growth and yield indices, as well as the best combination to produce a better yield
Summary
The Sri Lankan government banned the import of synthetic fertilizers and agrochemicals recently (Beillard et al, 2021). Organic farming recycles and mineralizes nutrients from organic matter to ensure sustainable production and reclaiming the degraded soil (Are et al, 2017). There was low soil fertility is in a large part of the lands in Sri Lanka too; mainly because of the high yielding varieties, the application of excessive inorganic fertilizers and inadequate nutrient replacement; while over-fertilization results in the accumulation and leaching of nitrate residuals that directly contribute to the pollution of ground water apart from the low soil fertility (Biosci et al, 2012). The importance of foliar spraying of water-soluble fertilizers to overcome micro and macronutrient deficiencies in the soil is immensely felt these days because of the adaptation to high chemical inputs (Garhwal et al, 2007). Considering the above facts; the objectives of this study were meant to identify the best combination of urea and soil application of cow dung as an amendment on MI-Green chilli growth and yield indices, as well as the best combination to produce a better yield
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