milkthistle (silybum marianum l.) is a rangeland medicinal plant growing wild in different locations in iran. in the present research work, the effect of n, p and k in their different proportions of n0p0k0, n100p100k50, n150p150k100 and n200p200k150 kgha-1 as compared with control (no fertilizer application) on the plant's growth was put to test. suc variables as plant height, no. of capit...

The staged addition of feed to fertilized fish ponds was evaluated by adding fertilizers to 15 ponds stocked with Nile tilapia Oreochromis niloticus, then adding feed at half ad libitum rates once fish in the ponds reached a target weight. Each pond was stocked with 750 fish (3 fish/mz), and each treatment included three ponds with first feeding at (a) 50 g, (b) 100 g, (c) 150 g, (d) 200 g, and...

Abstrak. Tanaman padi (Oryza sativa L.) merupakan tanaman pangan utama dan komoditi strategis bagi Indoesia. Produksi nasional belum mampu mencukupi kebutuhan penduduk banyak, kebijakan yang dilakukan seperti penggunaan varietas unggul, pembangunan sarana irigasi, subsidi benih, pupuk, pestisida dalam meningkatkan produksi secara nasional. Salah satu hal terpenting yaitu dengan menyediakan pupu...

introduction: two of the main challenges in developing countries are food production and trying to get a high income for good nutrition and reduction of poverty. cereals and legumes are the most important crops in the rainfed areas of the country occupying the majority of dry land areas. irrigated production systems had a main role in food production in the past years; but unfortunately, in rec...

introduction: in recent decades, excessive use of chemical fertilizers causes environmental problems such as water resource pollution and decrease in soil fertility. organic matters are excellent sources of plant-available nutrients and their addition to soil could maintain high microbial populations and activities. in crop studies, prabha et al. (2007) reported that there was excellent plant g...

introduction: saffron is one of the most important economic plants in the khorasan province. awareness of soil quality in agricultural lands is essential for the best management of lands and for obtaining maximum economic benefit. in general, plant growth is a function of environmental factors especially chemical and physical properties of soil (20). it has been demonstrated that there was a po...