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首页> 外文期刊>African Journal of Agricultural Research >Effects of NPK and plant tea manure (Tithonia diversifolia) on growth rate of amaranth (Amaranthus cruentus L.) in soilless growing media
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Effects of NPK and plant tea manure (Tithonia diversifolia) on growth rate of amaranth (Amaranthus cruentus L.) in soilless growing media

机译：氮磷钾和植物茶粪肥（Tithonia diversifolia）对无土生长培养基中a菜（Amaranthus cruentus L.）生长速率的影响

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摘要

Many countries are running short of agricultural land. Even where land appears to be available, soil fertility, water availability as well as nutrient mining still remains a challenge yet at the same time the world’s demand for food is rapidly increasing. Millions of square meters of soil are mined each year for use in vegetable nurseries and in backyard gardens in addition to excessive use of inorganic fertilizers. There are however a number of soilless growth media and organic sources of plant nutrients that could be used to address this problem. This study investigated the effects of application of NPK (Nitrogen, Phosphorus and Potassium) and plant tea (Tithonia diversifolia) manure on selected soilless growing media on growth rate of Amaranthus cruentus L. This was to determine their suitability as an alternative growing media. A split plot design was used and the experiments carried out for two seasons. The soilless growing media investigated were: charcoal dust, saw dust, dry coffee husks, and mixture of charcoal and saw dust (1:1), saw dust and coffee husks (1:1), charcoal dust and coffee husks (4:1) and a compound mixture of charcoal dust, sawdust and coffee husks (2:2:1). The growing media were randomized in the three split blocks with eight pots each.? Growth rates in terms of shoot height, number of leaves, leaf length, leaf width, stem girth and root length were measured for two seasons. Results indicated that all the growth media could support amaranth growth. However, a mixture of charcoal dust and dry coffee husk (4:1 respectively) with application of plant tea manure significantly affected the growth rate of A. cruentus (p<0.05). Mixture of charcoal dust and dry coffee husk (4:1 respectively) with application of either NPK or plant tea manure could be used as the best alternative growth media. Soilless growth media that constituted of charcoal dust and coffee husks could be explored for amaranth production in home kitchen gardens in rural areas and backyard gardens in urban areas.
机译：许多国家的耕地短缺。即使在土地似乎可用的地方，土壤肥力，水的可利用性以及养分的开采仍然是一个挑战，但与此同时，世界对食物的需求正在迅速增加。除了过量使用无机肥料外，每年还要开采数百万平方米的土壤，用于蔬菜苗圃和后院花园。但是，有许多无土的生长介质和植物营养的有机来源可用于解决该问题。这项研究调查了在选定的无土生长培养基上施用NPK（氮，磷和钾）和植物茶（Tithonia diversifolia）粪肥对A菜的生长速率的影响。这是为了确定它们是否适合作为替代生长培养基。使用分块设计，实验进行了两个季节。研究的无土栽培介质为：木炭尘，锯末，干燥的咖啡果壳，木炭和锯末的混合物（1：1），锯末和咖啡果壳（1：1），木炭灰和咖啡果壳（4：1） ）和木炭粉，木屑和咖啡果壳（2：2：1）的复合混合物。将生长中的培养基随机分为三个独立的块，每个块八个罐。测量两个季节的枝条高度，叶数，叶长，叶宽，茎周长和根长的生长速率。结果表明，所有生长培养基都可以支持a菜的生长。然而，木炭粉尘和干咖啡果壳（分别为4：1）与植物茶粪肥的混合物显着影响了刺槐的生长速度（p <0.05）。木炭粉尘和干咖啡果壳（分别为4：1）与NPK或植物茶粪肥的混合物可以用作最佳替代生长培养基。可以探索由木炭尘和咖啡果皮组成的无土生长培养基，以在农村地区的家庭厨房花园和城市地区的后院花园中a菜生产。

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