The effect of sole application of inorganic fertilizers (NPK) (N:P:K:: 30:26:25 kg ha ) and combined application of farmyard manure (FYM) @ 4 Mg ha 1 and inorganic fertilizers (NPK + FYM) vis-a-vis nonapplication of fertilizers and manures (control) on changes in soil physical properties and plant growth characteristics of soybean (cv. JS 335) was studied in a deep Vertisol at the Indian Instit...

Humic acid (HA) can supplement the chemical fertilizers to reduce the input cost of agricultural production. Field experiments on increasing cotton [Gossipium hirsutum L, cv. CIM-473] crop yield through HA were conducted in salt-affected soil of Kohat division, NWFP, Pakistan, during Kharif 2005 at two sites being irrigated with tube-well saline waters. Four levels of humic acid (0, 0.5, 1.0 an...

Archaeal (AOA) and bacterial (AOB) ammonia-oxidizer responses to long-term field fertilization in a Mollisol soil were assessed through pyrosequencing of amoA genes. Long-term fertilization treatments including chemical fertilizer (NPK), NPK plus manure (NPKM), and no fertilization over 23 years altered soil properties resulting in significant shifts in AOA and AOB community composition and abu...

To observe the comparative effects of poultry manure, household waste compost and fertilizers and their combinations on growth and yield of maize (Zea mays L.), this experiment was conducted in the crop field of the Department of Soil Science, University of Chittagong, Bangladesh during Rabi season in 2010-2011. There were ten treatments, one control and nine fertilizer combinations. In three s...

Gladiolus is very popular and highly demanded cut flower worldwide however imbalance nutrition reduces its production, additionally irrational combination of nutrient further kindled the situation. The current study was conducted to ascertain the effects of different combinations of N, P and K on growth, floral development, and N, P and K uptake by gladiolus leaves. N, P and K was applied as; w...

The present study was designed to study the effect of different growing media (clay, composted leaves and sand + composted leaves (1: 1 v/v) and fertilizer rates of mineral NPK (19: 19: 19) at 0.0, 2.5, 5 g / plant and their combined effect on the vegetative growth, flowering qualities, bulbs production and chemical constituents of leaves of Amaryllis (Hippeastrum vittatum, Herb.) plants during...

One of the main factors limiting the yield and productivity of irrigated rice in the Sahel of West Africa is the high cost of fertilizers and inefficient use of nutrients in the cropping systems. A two-year experiment was conducted over four consecutive seasons at Ndiaye (16°11’N, 16°15’W) and Fanaye (16°32’N, 15°11’W) along the Senegal River Valley to investigate alternative fertilizer managem...

Understanding the effects of external organic and inorganic components on soil fertility and quality is essential for improving low-yielding soils. We conducted a field study over two consecutive rice growing seasons to investigate the effect of applying chemical fertilizer (NPK), NPK plus green manure (NPKG), NPK plus pig manure (NPKM), and NPK plus straw (NPKS) on the soil nutrient status, en...

The experiment was conducted at lowland series of wet lands, International Rice Research Institute (IRRI) Farm, Los Banos, Laguna, Philippines. The rice variety PSBRc 82 was raised during wet season (June – October), and the experiment was laid out in randomized block design with four replications. There were eleven treatments viz., control, recommended NPK fertilizer, -N, -P, -K, LCC 3, LCC 4,...

Macronutrients are essential elements for plant growth and development. In natural, non-cultivated systems, the availability of macronutrients is not a limiting factor of growth, due to fast recycling mechanisms. However, their availability might be an issue in modern agricultural practices, since soil has been frequently over exploited. From a crop management perspective, the nitrogen (N), pho...