Effects of mineral levels and leaf extracts of some plants on soil pH and growth rate of selected non-leguminous plants

Abstract. Njogu MJ, Murungi JI, Wanjau RN. 2021. Effects of mineral levels and leaf extracts some plants on soil pH growth rate selected non-leguminous plants. Cell Biol Dev 5: 76-89. The purpose this study was to determine the effect such as wheat (Triticum aestivum L.), kale (Brassica oleracea var acephala), coriander (Coriandrum sativum L.) grown acidic soils treated with leaves known have a high buffering capacity mineralization capacity, i.e., Jacaranda mimosifolia D. Don, Cordia africana Lam, Croton macrostachyus Hochst. ex Delile, Vitex keniensis Turril, Tithonia diversifolia (Hemsl.) A.Gray, Manihot esculenta Crantz, Carica papaya L., Helianthus annuus L. For investigation, were applied 4.75. Leaf eight species combined according macronutrient content chosen discovered in Nyandarua County, Kenya. Wheat, kale, rates determined by comparing dry mass uprooted seedlings from trial control studies every fourteen days for 60 days. Flame photometry, atomic absorption spectrometry (AAS), UV/visible spectroscopy, turbidimetry used macronutrients extracts. analysis variance (ANOVA) Student-Newman-Keuls (SNK) tests analyze data. days, mean value ranged 4.580.27a 7.440.04d. K+; 189.95±0.17c, Ca2+; 367.33±0.67e, Mg2+; 114.33e±0.33, PO43-; 55.38±0.23f, NO3-; 322.25±0.40f, SO42-; 56.48±0.23e had greatest (?g/g). Macronutrient significantly different extract (Le), commercial NPK fertilizers (Cf), untreated (Us). Wheat (dry mass) grew at 1.27±0.13b g/wk 1.26±0.12b (Cf) 0.32±0.02a (Us), while (height) 7.29±1.43b cm/wk 6.20±1.95b 3.98±0.97a kales 0.20±0.01a 0.30±0.02a 0.03±0.01b g/k 2.15±0.85c 2.57±0.88b 1.04±0.02a corianders 0.16±0.01a 0.17±0.02a 0.10±0.01a 1.85±0.56b 1.86±0.58b 0.79±0.18a This study's findings show that plant's can be place inorganic should recommended agroforestry low-pH environments.