ARTICLE | doi:10.20944/preprints201809.0050.v1
Subject: Biology, Horticulture Keywords: inorganic fertilizer; vermicompost; Net; growth; yield; Indian spinach
Online: 18 September 2018 (06:32:53 CEST)
Best horticulture management has been practiced to reduce the amount of inorganic fertilizer in connection with net (mosquito net) for higher production of Indian spinach. Excessive use of chemical fertilizers in agriculture promoted negative effect on the environment and human health in Bangladesh. The experiment was conducted at the Horticulture Farm of Bangladesh Agricultural University (BAU), Mymensingh during the period February to May 2016. Two factor experiments were conducted on nettings: control (N0), Netting (N1) and different fertilizers: control (F0), Vermicompost 10 t/ha (F1), Vermicompost 15 t/ha (F2), 2/3rdof F2+ 1/3rdof F4 (F3), Inorganic fertilizer (F4). Combination of mosquito net and combined of organic and inorganic fertilizers (N1F3) gave the significantly higher growth and yield of Indian spinach compared to other treatment combination. The maximum vine length (77.71 cm), after 45 days after sowing was found from N1F3 which was 72% higher compared to control. The highest yield of Indian spinach was 38.67 t/ha from N1F3 which was 80% higher compared to control. The treatment combination of N1F3 provided maximum leaf numbers per plant, leaf length.
ARTICLE | doi:10.20944/preprints202002.0080.v1
Subject: Biology, Agricultural Sciences & Agronomy Keywords: Vermicompost; Sesamum indicum L.; Perionyx excavates; NPK Fertilizers; Farm yard Manure; plant growth components
Online: 6 February 2020 (09:05:32 CET)
This paper aims in studying the effect of vermicompost on soil and growth of the plant Sesamum indicum L. by measuring the its various growth and yield components. For this purpose, a mixture of textile mill sludge, cow dung and saw dust have been mixed in different ratios to produce vermicompost by using the earthworm Perionyx excavates and was compared with inorganic (NPK) and organic fertilizer (FYM). The results of soil quality revealed that the porosity, water holding capacity (WHC), cation exchange capacity (CEC) and occurrence of macronutrients were significantly increased and the particle density were decreased in treatment with 100% vermicompost (VC) followed by soil treated with 50% VC + 50% NPK, on contrary, reduction in porosity, WHC, CEC were noted in NPK treated plots. The effect of vermicompost on plant growth components (root, shoot, leaf area index, branch, DMP) and yield components (pod number, weight, length, seed weight, number of seed, seed yield) were significantly higher in the plots treated with 50% VC + 50% NPK followed by 100% vermicompost than the plots treated only with FYM and NPK. The significant growth upon using vermicompost was accounted by its nutrients composition over other fertilizers.
ARTICLE | doi:10.20944/preprints202012.0769.v1
Subject: Biology, Anatomy & Morphology Keywords: biochar; compost; vermicompost; biochar-compost mixtures; soil fertility; Swiss chard; nitrate content; leaf pigment content
Online: 31 December 2020 (07:32:17 CET)
In recent years, soil addition with organic amendments, such as biochar and compost, has gained attention as an effective agronomic practice to sustain soil fertility, enhance plant growth and crop yield. Well known are the positive effects of compost on yield of a wide crop varieties, while both positive and negative responses are reported for biochar Therefore, the aim of the study was to verify the effect of biochar mixed with three types of compost on quanti-qualitative response of Swiss chard (Beta vulgaris L. cycla), a leafy green vegetable rich in dietary antioxidants, largely consumed worldwide. A factorial experiment in pots with two factors, including biochar (without biochar and with biochar from vine pruning residues) and compost (without compost, with compost from olive pomace, with vermicompost from cattle manure and with compost from cattle anaerobic digestate), was setup. Two growth cycles were considered and a set of quantitative (height of plants, number, area and fresh weight of leaves) and qualitative parameters (carotenoid, chlorophyll, total N and NO3-content of leaves) were analyzed. Biochar decreased plant growth and NO3- leaf content; on the contrary, it increased total N leaf content, while compost improved all the considered parameters. The interactive effect of biochar and compost was evident only on total N and NO3- leaf content. In our experimental conditions, the compost showed to be the best option to improve Swiss chard growth and increase the phytopigments content, while the biochar-compost mixtures didn’t produce the expected effect.