• Effectiveness of different organic and inorganic combination on soil fertility and water holding capacity of wheat field

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  • 01/04/2016

Sujon Kumar completed this MSc thesis research at University of Development Alternative (UODA), Dhaka, Bangladesh.


Organic matter affects chemical and physical properties including soil structure, moisture holding capacity, diversity and activity of soil organisms and overall soil health. It influences nutrient availability and uptake of chemical fertilizers, pesticides and herbicides. Important characteristics in drought prone areas such as the region selected for this study.

This experiment investigated combinations of organic and inorganic fertilizers and their ability to balance physical and chemical soil properties and organic matter content. The overall objective was to assess if this practice can increase wheat yields and supports adaptation climate change in a rain-fed area of Bangladesh.

A trial on farms participating in SAF-BIN project in Baraigram (Natore district) tested two treatments: T1 = FYM: 3t/ha farm yard manure + 100kg/ha urea + 80kg/ha TSP[1]+ 20kg/ha MOP[2] + 60kg/ha gypsum; T2= PL: 3t/ha poultry litter + 100kg/ha urea + 80kg/ha TSP1 + 20kg/ha MOP2 + 60kg/ha gypsum). Wheat variety Prodip[3] was planted using local cultivation practices and irrigation. Both treatments were established in one mother plot (200m²) and replicated in five locations (400m2, each). 20 parameters were collected and analyzed using ANOVA and comparison of means.

Maximum grain yield was for both treatments 4.4t/ha. FYM showed better result in thousand grain weight (62.97g), tillers/plant (7.0), average leaf area (42cm2), number of spikelets/spike (22), average spike weight (2.8g), number of grains/spike (39), grain weight/spike (2.1g), spike/m2 (295) and harvest index (52.63%). Straw yield and biological yield (= grain and straw) (5.97t/ha and 9.97t/ha) were higher in PL. Locational variation were observed for grain and straw yields between treatments.

The application of organic matter in combination with half of the recommended fertilizer dose has a positive effect on wheat yield. FYM had a more positive impact on phenological and yield traits. Farmers can adapt their fertilizer management to improve soil conditions in Northern Bangladesh.

[1]triple superphosphate: inorganic fertilizer and source of  P

[2]mureate of potash: inorganic fertilizer and source of K

[3]Prodip was released by the Bangladesh Agricultural Research Institute (BARI) 2005, matures at 105-110 days with an average yield of 3.5-4.5t/ha