Effects of organic manure and chemical fertilizers on crops in the radish-stem amaranth-Indian spinach cropping pattern in homestead area

The effect of organic manure and chemical fertilizers on vegetable crops and soil properties in the radish-stem amaranth-Indian spinach cropping pattern was studied in a homestead area of Gazipur district in Bangladesh. There were eight treatments - poultry manure (PM) 5 t ha^sup ^sup -1^^ (T^sub 1^), cowdung (CD) 10 t ha^sup ^sup -1^^ (T^sub 2^), household waste (HW) 10 t ha^sup ^sup -1^^ (T^sub 3^), PM 2.5 t ha^sup ^sup -1^^ + reduced RDF (recommended dose of fertilizer) (T^sub 4^), CD 5 t ha^sup -1^ + reduced RDF (T^sub 5^), HW 5 t ha^sup -1^ + reduced RDF (T^sub 6^), 100% RDF (T^sub 7^) and Control (T^sub 8^). The 100% RDF treatment (T^sub 7^) gave the highest radish yield, however identical yield was obtained with T^sub 5^ and T^sub 6^ treatments. The maximum yield of stem amaranth and Indian spinach was obtained with T^sub 4^ and T^sub 6^ treatments, respectively. The highest N, P, K and S uptake was found in T^sub 7^ for radish, T^sub 4^ for stem amaranth and T^sub 6^ for Indian spinach. Soil bulk density and organic carbon were improved due to application of organic manure. The highest nutrient availability was recorded with T^sub 4^ treatment that was followed by T^sub 6^. Among the treatments, the poultry manure 2.5 t ha^sup -1^ + reduced dose of recommended fertilizer and house hold waste 5 t ha^sup -1^ + reduced dose of recommended fertilizer were found suitable for achieving sustainable vegetable crop yield as well as for susteanace of soil health at homestead area. Key words: Nutrient management, Vegetable production, Soil fertility, Homestead garden. Abbreviation: CD= Cowdung, HW=Household waste, PM= Poultry manure, N= Nitrogen, P= Phosphorous, K = Potassium, S= Sulphur, RDF= Recommended dose of fertilizer, AEZ= Agro-ecological zone, DMRT = Duncan's Multiple Range Test.

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