Productivity of duckweed (Lemna minor) as alternative forage feed for livestock in different light intensities

Abstract

Duckweed (Lemna minor) is a small aquatic plant that grow and float in water and spread extensively. Lemna minor is potential as a source of high quality forage. This study aimed to determine optimal light intensity on Lemna minor to generate maximum productivity. Parameters observed were physical-biological and chemical characteristics of the media (pH value, temperature, cover area, decreased of media volume, BOD, COD, nitrate, nitrite and phosphate), plant growth acceleration (number of shoots, leaf diameter and chlorophyll-a), biomass production, doubling time of cover area and the number of daughters. This study was done based on a completely randomized design with 4 levels of shading. While treatment was: without shading, shading 30%, shading 50% and shading 70% using paranet shade. Each treatment consisted of 4 replications. Result showed that the productivity of Lemna minor included the number of daughters, chlorophyll-a, biomass production, cover area, absorbed phosphate and doubling time the number of daughters reached the highest level without shading treatment (1007,21-2813,57 lux). The decrease of intensity of light, the increase the diameter of leaf. Decrease of media volume was positively correlated to size of cover area. Biomass production influenced by a wide doubling time of cover area and number of daughters.

Optimization of Using Cow's Manure Fertilizer at Different Rates on Growth and Production of Salvinia sp as Forage Feed

“…LCA of the Salvinia sp was obtained by measuring its length and width using two rulers each week. The measurement was done by collecting the plant until the water's surface was not visible (Boti et al, 2018;Nopriani et al, 2014). 2.…”

“…The time replication of the LCA of Salvinia sp plant was the time required by the plant to double itself in just two days to cover all areas. The replication time was calculated based on the formula ISO 20079 (Nopriani et al, 2014):…”

“…The linear regression analysis showed that replication time significantly correlates with plant biomass production of Salvinia sp. Replication time has a significant relationship with the biomass production of aquatic plants (Boti et al, 2018;Gustafsson & Norkko, 2019;Nopriani et al, 2014).…”

PENERAPAN MODEL PERTANIAN TERPADU BERBASIS TANAMAN Lemna sp DAN TERNAK BABI

“…Ternyata tanaman ini merupakan salah satu komoditi potensial untuk dikembangkan. Dikatakan demikian karena nilai keunggulan spesifiknya, yaitu dari segi penyebarannya, Nopriani et al, (2014) menyatakan Lemna sp sp. adalah tanaman kecil perairan yang ditemukan tumbuh mengapung di atas air dengan tingkat penyebaran yang sangat luas di seluruh dunia dan potensial sebagai sumber hijauan pakan ternak berkualitas tinggi.…”

“…adalah tanaman kecil perairan yang ditemukan tumbuh mengapung di atas air dengan tingkat penyebaran yang sangat luas di seluruh dunia dan potensial sebagai sumber hijauan pakan ternak berkualitas tinggi. Di samping itu, secara kimiawi tanaman ini memiliki kualitas yang tergolong baik yakni kandungan protein berkisar antara 22,4% (Nopriani et al, 2014) hingga 45% (Anonimous, 2016). Tanaman ini juga mengandung asam amino yang cukup seimbang terutama lysine mencapai 6.9 gr/100 gr, metionin 1.4%, dan histidin 2.7% (Porath at.…”